diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/CameraParameters.cs b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/CameraParameters.cs
similarity index 96%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/CameraParameters.cs
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/CameraParameters.cs
index 4efe299..f0b69c2 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/CameraParameters.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/CameraParameters.cs
@@ -1,62 +1,62 @@
-using System;
-using OpenCVForUnity.CoreModule;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    [System.Serializable]
-    public struct CameraParameters
-    {
-        public string calibration_date;
-        public int frames_count;
-        public int image_width;
-        public int image_height;
-        public int calibration_flags;
-        public double[] camera_matrix;
-        public double[] distortion_coefficients;
-        public double avg_reprojection_error;
-
-        public CameraParameters(int frames_count, int image_width, int image_height, int calibration_flags, double[] camera_matrix, double[] distortion_coefficients, double avg_reprojection_error)
-        {
-            this.calibration_date = DateTime.Now.ToString();
-            this.frames_count = frames_count;
-            this.image_width = image_width;
-            this.image_height = image_height;
-            this.calibration_flags = calibration_flags;
-            this.camera_matrix = camera_matrix;
-            this.distortion_coefficients = distortion_coefficients;
-            this.avg_reprojection_error = avg_reprojection_error;
-        }
-
-        public CameraParameters(int frames_count, int image_width, int image_height, int calibration_flags, Mat camera_matrix, Mat distortion_coefficients, double avg_reprojection_error)
-        {
-            double[] camera_matrixArr = new double[camera_matrix.total()];
-            camera_matrix.get(0, 0, camera_matrixArr);
-
-            double[] distortion_coefficientsArr = new double[distortion_coefficients.total()];
-            distortion_coefficients.get(0, 0, distortion_coefficientsArr);
-
-            this.calibration_date = DateTime.Now.ToString();
-            this.frames_count = frames_count;
-            this.image_width = image_width;
-            this.image_height = image_height;
-            this.calibration_flags = calibration_flags;
-            this.camera_matrix = camera_matrixArr;
-            this.distortion_coefficients = distortion_coefficientsArr;
-            this.avg_reprojection_error = avg_reprojection_error;
-        }
-
-        public Mat GetCameraMatrix()
-        {
-            Mat m = new Mat(3, 3, CvType.CV_64FC1);
-            m.put(0, 0, camera_matrix);
-            return m;
-        }
-
-        public Mat GetDistortionCoefficients()
-        {
-            Mat m = new Mat(distortion_coefficients.Length, 1, CvType.CV_64FC1);
-            m.put(0, 0, distortion_coefficients);
-            return m;
-        }
-    }
-}
+using System;
+using OpenCVForUnity.CoreModule;
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    [System.Serializable]
+    public struct CameraParameters
+    {
+        public string calibration_date;
+        public int frames_count;
+        public int image_width;
+        public int image_height;
+        public int calibration_flags;
+        public double[] camera_matrix;
+        public double[] distortion_coefficients;
+        public double avg_reprojection_error;
+
+        public CameraParameters(int frames_count, int image_width, int image_height, int calibration_flags, double[] camera_matrix, double[] distortion_coefficients, double avg_reprojection_error)
+        {
+            this.calibration_date = DateTime.Now.ToString();
+            this.frames_count = frames_count;
+            this.image_width = image_width;
+            this.image_height = image_height;
+            this.calibration_flags = calibration_flags;
+            this.camera_matrix = camera_matrix;
+            this.distortion_coefficients = distortion_coefficients;
+            this.avg_reprojection_error = avg_reprojection_error;
+        }
+
+        public CameraParameters(int frames_count, int image_width, int image_height, int calibration_flags, Mat camera_matrix, Mat distortion_coefficients, double avg_reprojection_error)
+        {
+            double[] camera_matrixArr = new double[camera_matrix.total()];
+            camera_matrix.get(0, 0, camera_matrixArr);
+
+            double[] distortion_coefficientsArr = new double[distortion_coefficients.total()];
+            distortion_coefficients.get(0, 0, distortion_coefficientsArr);
+
+            this.calibration_date = DateTime.Now.ToString();
+            this.frames_count = frames_count;
+            this.image_width = image_width;
+            this.image_height = image_height;
+            this.calibration_flags = calibration_flags;
+            this.camera_matrix = camera_matrixArr;
+            this.distortion_coefficients = distortion_coefficientsArr;
+            this.avg_reprojection_error = avg_reprojection_error;
+        }
+
+        public Mat GetCameraMatrix()
+        {
+            Mat m = new Mat(3, 3, CvType.CV_64FC1);
+            m.put(0, 0, camera_matrix);
+            return m;
+        }
+
+        public Mat GetDistortionCoefficients()
+        {
+            Mat m = new Mat(distortion_coefficients.Length, 1, CvType.CV_64FC1);
+            m.put(0, 0, distortion_coefficients);
+            return m;
+        }
+    }
+}
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/CameraParameters.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/CameraParameters.cs.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/CameraParameters.cs.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/CameraParameters.cs.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoCameraCalibrationExample.cs b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoCameraCalibrationExample.cs
similarity index 96%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoCameraCalibrationExample.cs
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoCameraCalibrationExample.cs
index 1359ce8..388dc9b 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoCameraCalibrationExample.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoCameraCalibrationExample.cs
@@ -1,1256 +1,1262 @@
-using UnityEngine;
-using UnityEngine.UI;
-using UnityEngine.SceneManagement;
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Xml.Serialization;
-using System.IO;
-using System.Linq;
-using OpenCVForUnity.CoreModule;
-using OpenCVForUnity.ArucoModule;
-using OpenCVForUnity.UnityUtils.Helper;
-using OpenCVForUnity.ImgprocModule;
-using OpenCVForUnity.UnityUtils;
-using OpenCVForUnity.Calib3dModule;
-using OpenCVForUnity.ImgcodecsModule;
-using HoloLensWithOpenCVForUnity.UnityUtils.Helper;
-using Microsoft.MixedReality.Toolkit.Input;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    /// <summary>
-    /// HoloLens ArUco Camera Calibration Example
-    /// An example of camera calibration using the aruco module.
-    /// Referring to https://github.com/opencv/opencv_contrib/blob/master/modules/aruco/samples/calibrate_camera.cpp.
-    /// https://github.com/opencv/opencv/blob/master/samples/cpp/tutorial_code/calib3d/camera_calibration/camera_calibration.cpp
-    /// https://docs.opencv.org/3.2.0/da/d13/tutorial_aruco_calibration.html
-    /// https://docs.opencv.org/3.4.0/d7/d21/tutorial_interactive_calibration.html
-    /// </summary>
-    [RequireComponent(typeof(HololensCameraStreamToMatHelper))]
-    public class HoloLensArUcoCameraCalibrationExample : MonoBehaviour
-    {
-        /// <summary>
-        /// The preview quad.
-        /// </summary>
-        public GameObject previewQuad;
-
-        /// <summary>
-        /// The marker type.
-        /// </summary>
-        public MarkerType markerType = MarkerType.ChArUcoBoard;
-
-        /// <summary>
-        /// The marker type dropdown.
-        /// </summary>
-        public Dropdown markerTypeDropdown;
-
-        /// <summary>
-        /// The dictionary identifier.
-        /// </summary>
-        public ArUcoDictionary dictionaryId = ArUcoDictionary.DICT_6X6_250;
-
-        /// <summary>
-        /// The dictionary id dropdown.
-        /// </summary>
-        public Dropdown dictionaryIdDropdown;
-
-        /// <summary>
-        /// Number of squares in X direction.
-        /// </summary>
-        public NumberOfSquaresX squaresX = NumberOfSquaresX.X_5;
-
-        /// <summary>
-        /// The squares X dropdown.
-        /// </summary>
-        public Dropdown squaresXDropdown;
-
-        /// <summary>
-        /// Number of squares in X direction.
-        /// </summary>
-        public NumberOfSquaresY squaresY = NumberOfSquaresY.Y_7;
-
-        /// <summary>
-        /// The squares X dropdown.
-        /// </summary>
-        public Dropdown squaresYDropdown;
-
-        /// <summary>
-        /// The save path input field.
-        /// </summary>
-        public InputField savePathInputField;
-
-        /// <summary>
-        /// Determines if refine marker detection. (only valid for ArUco boards)
-        /// </summary>
-        public bool refineMarkerDetection = true;
-
-
-        [Header("Extra Option")]
-
-        /// <summary>
-        /// Determines if calibrates camera using the list of calibration images.
-        /// </summary>
-        [TooltipAttribute("Determines if calibrates camera using the list of calibration images.")]
-        public bool isImagesInputMode = false;
-
-        /// <summary>
-        /// The calibration images directory path.
-        /// Set a relative directory path from the starting point of the "StreamingAssets" folder.  e.g. "calibration_images/".
-        /// </summary>
-        [TooltipAttribute("Set a relative directory path from the starting point of the \"StreamingAssets\" folder.  e.g. \"calibration_images\"")]
-        public string calibrationImagesDirectory = "calibration_images";
-
-        /// <summary>
-        /// The texture.
-        /// </summary>
-        Texture2D texture;
-
-        /// <summary>
-        /// The webcam texture to mat helper.
-        /// </summary>
-        HololensCameraStreamToMatHelper webCamTextureToMatHelper;
-
-        /// <summary>
-        /// The bgr mat.
-        /// </summary>
-        Mat bgrMat;
-
-        /// <summary>
-        /// The rgba mat.
-        /// </summary>
-        Mat rgbaMat;
-
-        /// <summary>
-        /// The cameraparam matrix.
-        /// </summary>
-        Mat camMatrix;
-
-        /// <summary>
-        /// The distortion coeffs.
-        /// </summary>
-        MatOfDouble distCoeffs;
-
-        /// <summary>
-        /// The identifiers.
-        /// </summary>
-        Mat ids;
-
-        /// <summary>
-        /// The corners.
-        /// </summary>
-        List<Mat> corners;
-
-        /// <summary>
-        /// The rejected corners.
-        /// </summary>
-        List<Mat> rejectedCorners;
-
-        /// <summary>
-        /// The rvecs.
-        /// </summary>
-        List<Mat> rvecs;
-
-        /// <summary>
-        /// The tvecs.
-        /// </summary>
-        List<Mat> tvecs;
-
-        /// <summary>
-        /// The detector parameters.
-        /// </summary>
-        DetectorParameters detectorParams;
-
-        /// <summary>
-        /// The dictionary.
-        /// </summary>
-        Dictionary dictionary;
-
-        /// <summary>
-        /// The recovered identifiers.
-        /// </summary>
-        Mat recoveredIdxs;
-
-        const int calibrationFlags = 0;// Calib3d.CALIB_FIX_K3 | Calib3d.CALIB_FIX_K4 | Calib3d.CALIB_FIX_K5
-        double repErr = 0;
-        bool shouldCaptureFrame = false;
-
-        // for ChArUcoBoard.
-        // chessboard square side length (normally in meters)
-        const float chArUcoBoradSquareLength = 0.04f;
-        // marker side length (same unit than squareLength)
-        const float chArUcoBoradMarkerLength = 0.02f;
-        const int charucoMinMarkers = 2;
-        Mat charucoCorners;
-        Mat charucoIds;
-        CharucoBoard charucoBoard;
-        List<List<Mat>> allCorners;
-        List<Mat> allIds;
-        List<Mat> allImgs;
-
-        // for OthearMarkers.
-        // square size in some user-defined units (1 by default)
-        const float squareSize = 1f;
-        List<Mat> imagePoints;
-        bool isInitialized = false;
-        bool isCalibrating = false;
-
-        // Use this for initialization
-        IEnumerator Start()
-        {
-            webCamTextureToMatHelper = gameObject.GetComponent<HololensCameraStreamToMatHelper>();
-            webCamTextureToMatHelper.outputColorFormat = WebCamTextureToMatHelper.ColorFormat.GRAY;
-
-            // fix the screen orientation.
-            Screen.orientation = ScreenOrientation.LandscapeLeft;
-            // wait for the screen orientation to change.
-            yield return null;
-
-            if (markerTypeDropdown.value != (int)markerType || dictionaryIdDropdown.value != (int)dictionaryId
-                || squaresXDropdown.value != (int)squaresX - 1 || squaresYDropdown.value != (int)squaresY - 1)
-            {
-                markerTypeDropdown.value = (int)markerType;
-                dictionaryIdDropdown.value = (int)dictionaryId;
-                squaresXDropdown.value = (int)squaresX - 1;
-                squaresYDropdown.value = (int)squaresY - 1;
-            }
-            dictionaryIdDropdown.interactable = (markerType == MarkerType.ChArUcoBoard);
-
-#if UNITY_WEBGL && !UNITY_EDITOR
-            isImagesInputMode = false;
-#endif
-            if (isImagesInputMode)
-            {
-                isImagesInputMode = InitializeImagesInputMode();
-            }
-
-            if (!isImagesInputMode)
-            {
-                webCamTextureToMatHelper.Initialize();
-            }
-        }
-
-        /// <summary>
-        /// Raises the webcam texture to mat helper initialized event.
-        /// </summary>
-        public void OnWebCamTextureToMatHelperInitialized()
-        {
-            Debug.Log("OnWebCamTextureToMatHelperInitialized");
-
-            Mat webCamTextureMat = webCamTextureToMatHelper.GetMat();
-
-            InitializeCalibraton(webCamTextureMat);
-
-            // if WebCamera is frontFaceing, flip Mat.
-            webCamTextureToMatHelper.flipHorizontal = webCamTextureToMatHelper.IsFrontFacing();
-        }
-
-        /// <summary>
-        /// Raises the webcam texture to mat helper disposed event.
-        /// </summary>
-        public void OnWebCamTextureToMatHelperDisposed()
-        {
-            Debug.Log("OnWebCamTextureToMatHelperDisposed");
-
-            DisposeCalibraton();
-        }
-
-        /// <summary>
-        /// Raises the webcam texture to mat helper error occurred event.
-        /// </summary>
-        /// <param name="errorCode">Error code.</param>
-        public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
-        {
-            Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
-        }
-
-        // Update is called once per frame
-        void Update()
-        {
-            if (isImagesInputMode)
-                return;
-
-            if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
-            {
-
-                Mat grayMat = webCamTextureToMatHelper.GetMat();
-
-                if (shouldCaptureFrame)
-                {
-                    shouldCaptureFrame = false;
-                    Mat frameMat = grayMat.clone();
-                    double e = CaptureFrame(frameMat);
-                    if (e > 0)
-                        repErr = e;
-                }
-
-                DrawFrame(grayMat, bgrMat);
-                Imgproc.cvtColor(bgrMat, rgbaMat, Imgproc.COLOR_BGR2RGBA);
-
-                Utils.fastMatToTexture2D(rgbaMat, texture);
-            }
-        }
-
-        private void InitializeCalibraton(Mat frameMat)
-        {
-            Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
-
-            float width = frameMat.width();
-            float height = frameMat.height();
-
-            texture = new Texture2D(frameMat.cols(), frameMat.rows(), TextureFormat.RGBA32, false);
-            texture.wrapMode = TextureWrapMode.Clamp;
-
-            previewQuad.GetComponent<MeshRenderer>().material.mainTexture = texture;
-            previewQuad.transform.localScale = new Vector3(0.2f * width / height, 0.2f, 1);
-
-            float imageSizeScale = 1.0f;
-
-            // set cameraparam.
-            camMatrix = CreateCameraMatrix(width, height);
-            Debug.Log("camMatrix " + camMatrix.dump());
-
-            distCoeffs = new MatOfDouble(0, 0, 0, 0, 0);
-            Debug.Log("distCoeffs " + distCoeffs.dump());
-
-            // calibration camera.
-            Size imageSize = new Size(width * imageSizeScale, height * imageSizeScale);
-            double apertureWidth = 0;
-            double apertureHeight = 0;
-            double[] fovx = new double[1];
-            double[] fovy = new double[1];
-            double[] focalLength = new double[1];
-            Point principalPoint = new Point(0, 0);
-            double[] aspectratio = new double[1];
-
-            Calib3d.calibrationMatrixValues(camMatrix, imageSize, apertureWidth, apertureHeight, fovx, fovy, focalLength, principalPoint, aspectratio);
-
-            Debug.Log("imageSize " + imageSize.ToString());
-            Debug.Log("apertureWidth " + apertureWidth);
-            Debug.Log("apertureHeight " + apertureHeight);
-            Debug.Log("fovx " + fovx[0]);
-            Debug.Log("fovy " + fovy[0]);
-            Debug.Log("focalLength " + focalLength[0]);
-            Debug.Log("principalPoint " + principalPoint.ToString());
-            Debug.Log("aspectratio " + aspectratio[0]);
-
-
-            bgrMat = new Mat(frameMat.rows(), frameMat.cols(), CvType.CV_8UC3);
-            rgbaMat = new Mat(frameMat.rows(), frameMat.cols(), CvType.CV_8UC4);
-            ids = new Mat();
-            corners = new List<Mat>();
-            rejectedCorners = new List<Mat>();
-            rvecs = new List<Mat>();
-            tvecs = new List<Mat>();
-
-            detectorParams = DetectorParameters.create();
-            detectorParams.set_cornerRefinementMethod(1);// do cornerSubPix() of OpenCV.
-            dictionary = Aruco.getPredefinedDictionary((int)dictionaryId);
-
-            recoveredIdxs = new Mat();
-
-            charucoCorners = new Mat();
-            charucoIds = new Mat();
-            charucoBoard = CharucoBoard.create((int)squaresX, (int)squaresY, chArUcoBoradSquareLength, chArUcoBoradMarkerLength, dictionary);
-
-
-            allCorners = new List<List<Mat>>();
-            allIds = new List<Mat>();
-            allImgs = new List<Mat>();
-
-            imagePoints = new List<Mat>();
-
-            isInitialized = true;
-        }
-
-        private void DisposeCalibraton()
-        {
-            ResetCalibration();
-
-            if (bgrMat != null)
-                bgrMat.Dispose();
-            if (rgbaMat != null)
-                rgbaMat.Dispose();
-            if (ids != null)
-                ids.Dispose();
-            foreach (var item in corners)
-            {
-                item.Dispose();
-            }
-            corners.Clear();
-            foreach (var item in rejectedCorners)
-            {
-                item.Dispose();
-            }
-            rejectedCorners.Clear();
-            foreach (var item in rvecs)
-            {
-                item.Dispose();
-            }
-            rvecs.Clear();
-            foreach (var item in tvecs)
-            {
-                item.Dispose();
-            }
-            tvecs.Clear();
-
-            if (recoveredIdxs != null)
-                recoveredIdxs.Dispose();
-
-            if (charucoCorners != null)
-                charucoCorners.Dispose();
-            if (charucoIds != null)
-                charucoIds.Dispose();
-            if (charucoBoard != null)
-                charucoBoard.Dispose();
-
-            isInitialized = false;
-        }
-
-        private void DrawFrame(Mat grayMat, Mat bgrMat)
-        {
-            Imgproc.cvtColor(grayMat, bgrMat, Imgproc.COLOR_GRAY2BGR);
-
-            switch (markerType)
-            {
-                default:
-                case MarkerType.ChArUcoBoard:
-                    // detect markers.
-                    Aruco.detectMarkers(grayMat, dictionary, corners, ids, detectorParams, rejectedCorners, camMatrix, distCoeffs);
-
-                    // refine marker detection.
-                    if (refineMarkerDetection)
-                    {
-                        Aruco.refineDetectedMarkers(grayMat, charucoBoard, corners, ids, rejectedCorners, camMatrix, distCoeffs, 10f, 3f, true, recoveredIdxs, detectorParams);
-                    }
-
-                    // if at least one marker detected
-                    if (ids.total() > 0)
-                    {
-                        Aruco.interpolateCornersCharuco(corners, ids, grayMat, charucoBoard, charucoCorners, charucoIds, camMatrix, distCoeffs, charucoMinMarkers);
-
-                        // draw markers.
-                        Aruco.drawDetectedMarkers(bgrMat, corners, ids, new Scalar(0, 255, 0, 255));
-                        // if at least one charuco corner detected
-                        if (charucoIds.total() > 0)
-                        {
-                            Aruco.drawDetectedCornersCharuco(bgrMat, charucoCorners, charucoIds, new Scalar(0, 0, 255, 255));
-                        }
-                    }
-                    break;
-                case MarkerType.ChessBoard:
-                case MarkerType.CirclesGlid:
-                case MarkerType.AsymmetricCirclesGlid:
-                    // detect markers.
-                    MatOfPoint2f points = new MatOfPoint2f();
-                    bool found = false;
-
-                    switch (markerType)
-                    {
-                        default:
-                        case MarkerType.ChessBoard:
-                            found = Calib3d.findChessboardCorners(grayMat, new Size((int)squaresX, (int)squaresY), points, Calib3d.CALIB_CB_ADAPTIVE_THRESH | Calib3d.CALIB_CB_FAST_CHECK | Calib3d.CALIB_CB_NORMALIZE_IMAGE);
-                            break;
-                        case MarkerType.CirclesGlid:
-                            found = Calib3d.findCirclesGrid(grayMat, new Size((int)squaresX, (int)squaresY), points, Calib3d.CALIB_CB_SYMMETRIC_GRID);
-                            break;
-                        case MarkerType.AsymmetricCirclesGlid:
-                            found = Calib3d.findCirclesGrid(grayMat, new Size((int)squaresX, (int)squaresY), points, Calib3d.CALIB_CB_ASYMMETRIC_GRID);
-                            break;
-                    }
-
-                    if (found)
-                    {
-                        if (markerType == MarkerType.ChessBoard)
-                            Imgproc.cornerSubPix(grayMat, points, new Size(5, 5), new Size(-1, -1), new TermCriteria(TermCriteria.EPS + TermCriteria.COUNT, 30, 0.1));
-
-                        // draw markers.
-                        Calib3d.drawChessboardCorners(bgrMat, new Size((int)squaresX, (int)squaresY), points, found);
-                    }
-                    break;
-            }
-
-            double[] camMatrixArr = new double[(int)camMatrix.total()];
-            camMatrix.get(0, 0, camMatrixArr);
-            double[] distCoeffsArr = new double[(int)distCoeffs.total()];
-            distCoeffs.get(0, 0, distCoeffsArr);
-
-            int ff = Imgproc.FONT_HERSHEY_SIMPLEX;
-            double fs = 0.4;
-            Scalar c = new Scalar(255, 255, 255, 255);
-            int t = 0;
-            int lt = Imgproc.LINE_AA;
-            bool blo = false;
-            int frameCount = (markerType == MarkerType.ChArUcoBoard) ? allCorners.Count : imagePoints.Count;
-            Imgproc.putText(bgrMat, frameCount + " FRAME CAPTURED", new Point(bgrMat.cols() - 300, 20), ff, fs, c, t, lt, blo);
-            Imgproc.putText(bgrMat, "IMAGE_WIDTH: " + bgrMat.width(), new Point(bgrMat.cols() - 300, 40), ff, fs, c, t, lt, blo);
-            Imgproc.putText(bgrMat, "IMAGE_HEIGHT: " + bgrMat.height(), new Point(bgrMat.cols() - 300, 60), ff, fs, c, t, lt, blo);
-            Imgproc.putText(bgrMat, "CALIBRATION_FLAGS: " + calibrationFlags, new Point(bgrMat.cols() - 300, 80), ff, fs, c, t, lt, blo);
-
-            Imgproc.putText(bgrMat, "CAMERA_MATRIX: ", new Point(bgrMat.cols() - 300, 100), ff, fs, c, t, lt, blo);
-            for (int i = 0; i < camMatrixArr.Length; i = i + 3)
-            {
-                Imgproc.putText(bgrMat, "   " + camMatrixArr[i] + ", " + camMatrixArr[i + 1] + ", " + camMatrixArr[i + 2] + ",", new Point(bgrMat.cols() - 300, 120 + 20 * i / 3), ff, fs, c, t, lt, blo);
-            }
-            Imgproc.putText(bgrMat, "DISTORTION_COEFFICIENTS: ", new Point(bgrMat.cols() - 300, 180), ff, fs, c, t, lt, blo);
-            for (int i = 0; i < distCoeffsArr.Length; ++i)
-            {
-                Imgproc.putText(bgrMat, "   " + distCoeffsArr[i] + ",", new Point(bgrMat.cols() - 300, 200 + 20 * i), ff, fs, c, t, lt, blo);
-            }
-            Imgproc.putText(bgrMat, "AVG_REPROJECTION_ERROR: " + repErr, new Point(bgrMat.cols() - 300, 300), ff, fs, c, t, lt, blo);
-
-            if (frameCount == 0)
-                Imgproc.putText(bgrMat, "To calibration start, please press the calibration button or do air tap gesture!", new Point(5, bgrMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar(255, 255, 255, 255), 1, Imgproc.LINE_AA, false);
-        }
-
-        private double CaptureFrame(Mat frameMat)
-        {
-            double repErr = -1;
-
-            switch (markerType)
-            {
-                default:
-                case MarkerType.ChArUcoBoard:
-                    List<Mat> corners = new List<Mat>();
-                    Mat ids = new Mat();
-                    Aruco.detectMarkers(frameMat, dictionary, corners, ids, detectorParams, rejectedCorners, camMatrix, distCoeffs);
-
-                    if (refineMarkerDetection)
-                    {
-                        Aruco.refineDetectedMarkers(frameMat, charucoBoard, corners, ids, rejectedCorners, camMatrix, distCoeffs, 10f, 3f, true, recoveredIdxs, detectorParams);
-                    }
-
-                    if (ids.total() > 0)
-                    {
-                        Debug.Log("Frame captured.");
-
-                        allCorners.Add(corners);
-                        allIds.Add(ids);
-                        allImgs.Add(frameMat);
-                    }
-                    else
-                    {
-
-                        Debug.Log("Invalid frame.");
-
-                        frameMat.Dispose();
-                        if (ids != null)
-                            ids.Dispose();
-                        foreach (var item in corners)
-                        {
-                            item.Dispose();
-                        }
-                        corners.Clear();
-
-                        return -1;
-                    }
-
-                    // calibrate camera using aruco markers
-                    //double arucoRepErr = CalibrateCameraAruco (allCorners, allIds, charucoBoard, frameMat.size(), camMatrix, distCoeffs, rvecs, tvecs, calibrationFlags);
-                    //Debug.Log ("arucoRepErr: " + arucoRepErr);
-
-                    // calibrate camera using charuco
-                    repErr = CalibrateCameraCharuco(allCorners, allIds, charucoBoard, frameMat.size(), camMatrix, distCoeffs, rvecs, tvecs, calibrationFlags, calibrationFlags);
-
-                    break;
-                case MarkerType.ChessBoard:
-                case MarkerType.CirclesGlid:
-                case MarkerType.AsymmetricCirclesGlid:
-
-                    MatOfPoint2f points = new MatOfPoint2f();
-                    Size patternSize = new Size((int)squaresX, (int)squaresY);
-
-                    bool found = false;
-                    switch (markerType)
-                    {
-                        default:
-                        case MarkerType.ChessBoard:
-                            found = Calib3d.findChessboardCorners(frameMat, patternSize, points, Calib3d.CALIB_CB_ADAPTIVE_THRESH | Calib3d.CALIB_CB_FAST_CHECK | Calib3d.CALIB_CB_NORMALIZE_IMAGE);
-                            break;
-                        case MarkerType.CirclesGlid:
-                            found = Calib3d.findCirclesGrid(frameMat, patternSize, points, Calib3d.CALIB_CB_SYMMETRIC_GRID);
-                            break;
-                        case MarkerType.AsymmetricCirclesGlid:
-                            found = Calib3d.findCirclesGrid(frameMat, patternSize, points, Calib3d.CALIB_CB_ASYMMETRIC_GRID);
-                            break;
-                    }
-
-                    if (found)
-                    {
-                        Debug.Log("Frame captured.");
-                        if (markerType == MarkerType.ChessBoard)
-                            Imgproc.cornerSubPix(frameMat, points, new Size(5, 5), new Size(-1, -1), new TermCriteria(TermCriteria.EPS + TermCriteria.COUNT, 30, 0.1));
-
-                        imagePoints.Add(points);
-                        allImgs.Add(frameMat);
-                    }
-                    else
-                    {
-                        Debug.Log("Invalid frame.");
-                        frameMat.Dispose();
-                        if (points != null)
-                            points.Dispose();
-                        return -1;
-                    }
-
-                    if (imagePoints.Count < 1)
-                    {
-                        Debug.Log("Not enough points for calibration.");
-                        repErr = -1;
-                    }
-                    else
-                    {
-
-                        MatOfPoint3f objectPoint = new MatOfPoint3f(new Mat(imagePoints[0].rows(), 1, CvType.CV_32FC3));
-                        CalcChessboardCorners(patternSize, squareSize, objectPoint, markerType);
-
-                        List<Mat> objectPoints = new List<Mat>();
-                        for (int i = 0; i < imagePoints.Count; ++i)
-                        {
-                            objectPoints.Add(objectPoint);
-                        }
-
-                        repErr = Calib3d.calibrateCamera(objectPoints, imagePoints, frameMat.size(), camMatrix, distCoeffs, rvecs, tvecs, calibrationFlags);
-                        objectPoint.Dispose();
-                    }
-
-                    break;
-            }
-
-            Debug.Log("repErr: " + repErr);
-            Debug.Log("camMatrix: " + camMatrix.dump());
-            Debug.Log("distCoeffs: " + distCoeffs.dump());
-
-            return repErr;
-        }
-
-        private double CalibrateCameraAruco(List<List<Mat>> allCorners, List<Mat> allIds, CharucoBoard board, Size imageSize, Mat cameraMatrix, Mat distCoeffs, List<Mat> rvecs = null, List<Mat> tvecs = null, int calibrationFlags = 0)
-        {
-            // prepare data for calibration
-            int nFrames = allCorners.Count;
-            int allLen = 0;
-            int[] markerCounterPerFrameArr = new int[allCorners.Count];
-            for (int i = 0; i < nFrames; ++i)
-            {
-                markerCounterPerFrameArr[i] = allCorners[i].Count;
-                allLen += allCorners[i].Count;
-            }
-
-            int[] allIdsConcatenatedArr = new int[allLen];
-            int index = 0;
-            for (int j = 0; j < allIds.Count; ++j)
-            {
-                int[] idsArr = new int[(int)allIds[j].total()];
-                allIds[j].get(0, 0, idsArr);
-
-                for (int k = 0; k < idsArr.Length; ++k)
-                {
-                    allIdsConcatenatedArr[index + k] = (int)idsArr[k];
-                }
-                index += idsArr.Length;
-            }
-
-            using (Mat allIdsConcatenated = new Mat(1, allLen, CvType.CV_32SC1))
-            using (Mat markerCounterPerFrame = new Mat(1, nFrames, CvType.CV_32SC1))
-            {
-
-                List<Mat> allCornersConcatenated = new List<Mat>();
-                foreach (var c in allCorners)
-                {
-                    foreach (var m in c)
-                    {
-                        allCornersConcatenated.Add(m);
-                    }
-                }
-
-                allIdsConcatenated.put(0, 0, allIdsConcatenatedArr);
-                markerCounterPerFrame.put(0, 0, markerCounterPerFrameArr);
-
-                if (rvecs == null) rvecs = new List<Mat>();
-                if (tvecs == null) tvecs = new List<Mat>();
-
-                return Aruco.calibrateCameraAruco(allCornersConcatenated, allIdsConcatenated, markerCounterPerFrame, board, imageSize, cameraMatrix, distCoeffs, rvecs, tvecs, calibrationFlags);
-            }
-        }
-
-        private double CalibrateCameraCharuco(List<List<Mat>> allCorners, List<Mat> allIds, CharucoBoard board, Size imageSize, Mat cameraMatrix, Mat distCoeffs, List<Mat> rvecs = null, List<Mat> tvecs = null, int calibrationFlags = 0, int minMarkers = 2)
-        {
-            // prepare data for charuco calibration
-            int nFrames = allCorners.Count;
-            List<Mat> allCharucoCorners = new List<Mat>();
-            List<Mat> allCharucoIds = new List<Mat>();
-            List<Mat> filteredImages = new List<Mat>();
-
-            for (int i = 0; i < nFrames; ++i)
-            {
-                // interpolate using camera parameters
-                Mat currentCharucoCorners = new Mat();
-                Mat currentCharucoIds = new Mat();
-
-                Aruco.interpolateCornersCharuco(allCorners[i], allIds[i], allImgs[i], board, currentCharucoCorners, currentCharucoIds, cameraMatrix, distCoeffs, minMarkers);
-
-                if (charucoIds.total() > 0)
-                {
-                    allCharucoCorners.Add(currentCharucoCorners);
-                    allCharucoIds.Add(currentCharucoIds);
-                    filteredImages.Add(allImgs[i]);
-                }
-                else
-                {
-                    currentCharucoCorners.Dispose();
-                    currentCharucoIds.Dispose();
-                }
-            }
-
-            if (allCharucoCorners.Count < 1)
-            {
-                Debug.Log("Not enough corners for calibration.");
-                return -1;
-            }
-
-            if (rvecs == null) rvecs = new List<Mat>();
-            if (tvecs == null) tvecs = new List<Mat>();
-
-            return Aruco.calibrateCameraCharuco(allCharucoCorners, allCharucoIds, board, imageSize, cameraMatrix, distCoeffs, rvecs, tvecs, calibrationFlags);
-        }
-
-        private void ResetCalibration()
-        {
-            foreach (var corners in allCorners)
-            {
-                foreach (var item in corners)
-                {
-                    item.Dispose();
-                }
-            }
-            allCorners.Clear();
-
-            foreach (var item in allIds)
-            {
-                item.Dispose();
-            }
-            allIds.Clear();
-
-            foreach (var item in allImgs)
-            {
-                item.Dispose();
-            }
-            allImgs.Clear();
-
-            repErr = 0;
-            camMatrix = CreateCameraMatrix(bgrMat.width(), bgrMat.height());
-            distCoeffs = new MatOfDouble(0, 0, 0, 0, 0);
-
-            foreach (var item in imagePoints)
-            {
-                item.Dispose();
-            }
-            imagePoints.Clear();
-        }
-
-        private Mat CreateCameraMatrix(float width, float height)
-        {
-            int max_d = (int)Mathf.Max(width, height);
-            double fx = max_d;
-            double fy = max_d;
-            double cx = width / 2.0f;
-            double cy = height / 2.0f;
-
-            Mat camMatrix = new Mat(3, 3, CvType.CV_64FC1);
-            camMatrix.put(0, 0, fx);
-            camMatrix.put(0, 1, 0);
-            camMatrix.put(0, 2, cx);
-            camMatrix.put(1, 0, 0);
-            camMatrix.put(1, 1, fy);
-            camMatrix.put(1, 2, cy);
-            camMatrix.put(2, 0, 0);
-            camMatrix.put(2, 1, 0);
-            camMatrix.put(2, 2, 1.0f);
-
-            return camMatrix;
-        }
-
-        private void CalcChessboardCorners(Size patternSize, float squareSize, MatOfPoint3f corners, MarkerType markerType)
-        {
-            if ((int)(patternSize.width * patternSize.height) != corners.rows())
-            {
-                Debug.Log("Invalid corners size.");
-                corners.create((int)(patternSize.width * patternSize.height), 1, CvType.CV_32FC3);
-            }
-
-            const int cn = 3;
-            float[] cornersArr = new float[corners.rows() * cn];
-            int width = (int)patternSize.width;
-            int height = (int)patternSize.height;
-
-            switch (markerType)
-            {
-                default:
-                case MarkerType.ChessBoard:
-                case MarkerType.CirclesGlid:
-                    for (int i = 0; i < height; ++i)
-                    {
-                        for (int j = 0; j < width; ++j)
-                        {
-                            cornersArr[(i * width * cn) + (j * cn)] = j * squareSize;
-                            cornersArr[(i * width * cn) + (j * cn) + 1] = i * squareSize;
-                            cornersArr[(i * width * cn) + (j * cn) + 2] = 0;
-                        }
-                    }
-                    corners.put(0, 0, cornersArr);
-
-                    break;
-                case MarkerType.AsymmetricCirclesGlid:
-                    for (int i = 0; i < height; ++i)
-                    {
-                        for (int j = 0; j < width; ++j)
-                        {
-                            cornersArr[(i * width * cn) + (j * cn)] = (2 * j + i % 2) * squareSize;
-                            cornersArr[(i * width * cn) + (j * cn) + 1] = i * squareSize;
-                            cornersArr[(i * width * cn) + (j * cn) + 2] = 0;
-                        }
-                    }
-                    corners.put(0, 0, cornersArr);
-
-                    break;
-            }
-        }
-
-        private bool InitializeImagesInputMode()
-        {
-            if (isInitialized)
-                DisposeCalibraton();
-
-            if (String.IsNullOrEmpty(calibrationImagesDirectory))
-            {
-                Debug.LogWarning("When using the images input mode, please set a calibration images directory path.");
-                return false;
-            }
-
-            string dirPath = Path.Combine(Application.streamingAssetsPath, calibrationImagesDirectory);
-            if (!Directory.Exists(dirPath))
-            {
-                Debug.LogWarning("The directory does not exist.");
-                return false;
-            }
-            string[] imageFiles = GetImageFilesInDirectory(dirPath);
-            if (imageFiles.Length < 1)
-            {
-                Debug.LogWarning("The image file does not exist.");
-                return false;
-            }
-
-            Uri rootPath = new Uri(Application.streamingAssetsPath + System.IO.Path.AltDirectorySeparatorChar);
-            Uri fullPath = new Uri(imageFiles[0]);
-            string relativePath = rootPath.MakeRelativeUri(fullPath).ToString();
-
-            using (Mat gray = Imgcodecs.imread(Utils.getFilePath(relativePath), Imgcodecs.IMREAD_GRAYSCALE))
-            {
-
-                if (gray.total() == 0)
-                {
-                    Debug.LogWarning("Invalid image file.");
-                    return false;
-                }
-
-                using (Mat bgr = new Mat(gray.size(), CvType.CV_8UC3))
-                using (Mat bgra = new Mat(gray.size(), CvType.CV_8UC4))
-                {
-                    InitializeCalibraton(gray);
-
-                    DrawFrame(gray, bgr);
-                    Imgproc.cvtColor(bgr, bgra, Imgproc.COLOR_BGR2RGBA);
-                    Utils.fastMatToTexture2D(bgra, texture);
-                }
-            }
-            return true;
-        }
-
-        private IEnumerator CalibrateCameraUsingImages()
-        {
-            string dirPath = Path.Combine(Application.streamingAssetsPath, calibrationImagesDirectory);
-            string[] imageFiles = GetImageFilesInDirectory(dirPath);
-            if (imageFiles.Length < 1)
-                yield break;
-
-            isCalibrating = true;
-            markerTypeDropdown.interactable = dictionaryIdDropdown.interactable = squaresXDropdown.interactable = squaresYDropdown.interactable = false;
-
-            Uri rootPath = new Uri(Application.streamingAssetsPath + System.IO.Path.AltDirectorySeparatorChar);
-
-            foreach (var path in imageFiles)
-            {
-
-                Uri fullPath = new Uri(path);
-                string relativePath = rootPath.MakeRelativeUri(fullPath).ToString();
-
-                using (Mat gray = Imgcodecs.imread(Utils.getFilePath(relativePath), Imgcodecs.IMREAD_GRAYSCALE))
-                {
-
-                    if (gray.width() != bgrMat.width() || gray.height() != bgrMat.height())
-                        continue;
-
-                    Mat frameMat = gray.clone();
-                    double e = CaptureFrame(frameMat);
-                    if (e > 0)
-                        repErr = e;
-
-                    DrawFrame(gray, bgrMat);
-                    Imgproc.cvtColor(bgrMat, rgbaMat, Imgproc.COLOR_BGR2RGBA);
-
-                    Utils.matToTexture2D(rgbaMat, texture);
-                }
-                yield return new WaitForSeconds(0.5f);
-            }
-
-            isCalibrating = false;
-            markerTypeDropdown.interactable = dictionaryIdDropdown.interactable = squaresXDropdown.interactable = squaresYDropdown.interactable = true;
-        }
-
-        private string[] GetImageFilesInDirectory(string dirPath)
-        {
-            if (Directory.Exists(dirPath))
-            {
-                string[] files = Directory.GetFiles(dirPath, "*.jpg");
-                files = files.Concat(Directory.GetFiles(dirPath, "*.jpeg")).ToArray();
-                files = files.Concat(Directory.GetFiles(dirPath, "*.png")).ToArray();
-                files = files.Concat(Directory.GetFiles(dirPath, "*.tiff")).ToArray();
-                files = files.Concat(Directory.GetFiles(dirPath, "*.tif")).ToArray();
-                return files;
-            }
-            return new string[0];
-        }
-
-        /// <summary>
-        /// Raises the destroy event.
-        /// </summary>
-        void OnDestroy()
-        {
-            if (isImagesInputMode)
-            {
-                DisposeCalibraton();
-            }
-            else
-            {
-                webCamTextureToMatHelper.Dispose();
-            }
-
-            Screen.orientation = ScreenOrientation.AutoRotation;
-        }
-
-        /// <summary>
-        /// Raises the back button click event.
-        /// </summary>
-        public void OnBackButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
-        }
-
-        /// <summary>
-        /// Raises the play button click event.
-        /// </summary>
-        public void OnPlayButtonClick()
-        {
-            if (isImagesInputMode) return;
-
-            webCamTextureToMatHelper.Play();
-        }
-
-        /// <summary>
-        /// Raises the pause button click event.
-        /// </summary>
-        public void OnPauseButtonClick()
-        {
-            if (isImagesInputMode) return;
-
-            webCamTextureToMatHelper.Pause();
-        }
-
-        /// <summary>
-        /// Raises the stop button click event.
-        /// </summary>
-        public void OnStopButtonClick()
-        {
-            if (isImagesInputMode) return;
-
-            webCamTextureToMatHelper.Stop();
-        }
-
-        /// <summary>
-        /// Raises the change camera button click event.
-        /// </summary>
-        public void OnChangeCameraButtonClick()
-        {
-            if (isImagesInputMode) return;
-
-            webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.IsFrontFacing();
-        }
-
-        /// <summary>
-        /// Raises the marker type dropdown value changed event.
-        /// </summary>
-        public void OnMarkerTypeDropdownValueChanged(int result)
-        {
-            if ((int)markerType != result)
-            {
-                markerType = (MarkerType)result;
-
-                dictionaryIdDropdown.interactable = (markerType == MarkerType.ChArUcoBoard);
-
-                if (isImagesInputMode)
-                {
-                    InitializeImagesInputMode();
-                }
-                else
-                {
-                    if (webCamTextureToMatHelper.IsInitialized())
-                        webCamTextureToMatHelper.Initialize();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the dictionary id dropdown value changed event.
-        /// </summary>
-        public void OnDictionaryIdDropdownValueChanged(int result)
-        {
-            if ((int)dictionaryId != result)
-            {
-                dictionaryId = (ArUcoDictionary)result;
-                dictionary = Aruco.getPredefinedDictionary((int)dictionaryId);
-
-                if (isImagesInputMode)
-                {
-                    InitializeImagesInputMode();
-                }
-                else
-                {
-                    if (webCamTextureToMatHelper.IsInitialized())
-                        webCamTextureToMatHelper.Initialize();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the squares X dropdown value changed event.
-        /// </summary>
-        public void OnSquaresXDropdownValueChanged(int result)
-        {
-            if ((int)squaresX != result + 1)
-            {
-                squaresX = (NumberOfSquaresX)(result + 1);
-
-                if (isImagesInputMode)
-                {
-                    InitializeImagesInputMode();
-                }
-                else
-                {
-                    if (webCamTextureToMatHelper.IsInitialized())
-                        webCamTextureToMatHelper.Initialize();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the squares Y dropdown value changed event.
-        /// </summary>
-        public void OnSquaresYDropdownValueChanged(int result)
-        {
-            if ((int)squaresY != result + 1)
-            {
-                squaresY = (NumberOfSquaresY)(result + 1);
-
-                if (isImagesInputMode)
-                {
-                    InitializeImagesInputMode();
-                }
-                else
-                {
-                    if (webCamTextureToMatHelper.IsInitialized())
-                        webCamTextureToMatHelper.Initialize();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the capture button click event.
-        /// </summary>
-        public void OnCaptureButtonClick()
-        {
-            if (isImagesInputMode)
-            {
-                if (!isCalibrating)
-                    InitializeImagesInputMode();
-                StartCoroutine("CalibrateCameraUsingImages");
-            }
-            else
-            {
-                shouldCaptureFrame = true;
-            }
-        }
-
-        /// <summary>
-        /// Raises the reset button click event.
-        /// </summary>
-        public void OnResetButtonClick()
-        {
-            if (isImagesInputMode)
-            {
-                if (!isCalibrating)
-                    InitializeImagesInputMode();
-            }
-            else
-            {
-                ResetCalibration();
-            }
-        }
-
-        /// <summary>
-        /// Raises the save button click event.
-        /// </summary>
-        public void OnSaveButtonClick()
-        {
-            string saveDirectoryPath = Path.Combine(Application.persistentDataPath, "HoloLensArUcoCameraCalibrationExample");
-
-            if (!Directory.Exists(saveDirectoryPath))
-            {
-                Directory.CreateDirectory(saveDirectoryPath);
-            }
-
-            string calibratonDirectoryName = "camera_parameters" + bgrMat.width() + "x" + bgrMat.height();
-            string saveCalibratonFileDirectoryPath = Path.Combine(saveDirectoryPath, calibratonDirectoryName);
-
-            // Clean up old files.
-            if (Directory.Exists(saveCalibratonFileDirectoryPath))
-            {
-                DirectoryInfo directoryInfo = new DirectoryInfo(saveCalibratonFileDirectoryPath);
-                foreach (FileInfo fileInfo in directoryInfo.GetFiles())
-                {
-                    if ((fileInfo.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
-                    {
-                        fileInfo.Attributes = FileAttributes.Normal;
-                    }
-                }
-                if ((directoryInfo.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
-                {
-                    directoryInfo.Attributes = FileAttributes.Directory;
-                }
-                directoryInfo.Delete(true);
-            }
-            Directory.CreateDirectory(saveCalibratonFileDirectoryPath);
-
-            // save the calibraton file.
-            string savePath = Path.Combine(saveCalibratonFileDirectoryPath, calibratonDirectoryName + ".xml");
-            int frameCount = (markerType == MarkerType.ChArUcoBoard) ? allCorners.Count : imagePoints.Count;
-            CameraParameters param = new CameraParameters(frameCount, bgrMat.width(), bgrMat.height(), calibrationFlags, camMatrix, distCoeffs, repErr);
-            XmlSerializer serializer = new XmlSerializer(typeof(CameraParameters));
-            using (var stream = new FileStream(savePath, FileMode.Create))
-            {
-                serializer.Serialize(stream, param);
-            }
-
-            // save the calibration images.
-#if UNITY_WEBGL && !UNITY_EDITOR
-            string format = "jpg";
-            MatOfInt compressionParams = new MatOfInt(Imgcodecs.IMWRITE_JPEG_QUALITY, 100);
-#else
-            string format = "png";
-            MatOfInt compressionParams = new MatOfInt(Imgcodecs.IMWRITE_PNG_COMPRESSION, 0);
-#endif
-            for (int i = 0; i < allImgs.Count; ++i)
-            {
-                Imgcodecs.imwrite(Path.Combine(saveCalibratonFileDirectoryPath, calibratonDirectoryName + "_" + i.ToString("00") + "." + format), allImgs[i], compressionParams);
-            }
-
-            savePathInputField.text = savePath;
-            Debug.Log("Saved the CameraParameters to disk in XML file format.");
-            Debug.Log("savePath: " + savePath);
-        }
-
-        /// <summary>
-        /// Raises the tapped event.
-        /// </summary>
-        public void OnTapped(MixedRealityPointerEventData eventData)
-        {
-            Debug.Log("OnTapped!");
-
-            // Determine if a Gaze pointer is over a GUI.
-            if (eventData.selectedObject != null && (eventData.selectedObject.GetComponent<Button>() != null || eventData.selectedObject.GetComponent<Toggle>() != null
-                 || eventData.selectedObject.GetComponent<Text>() != null || eventData.selectedObject.GetComponent<Image>() != null))
-            {
-                return;
-            }
-
-            OnCaptureButtonClick();
-        }
-
-
-        public enum MarkerType
-        {
-            ChArUcoBoard,
-            ChessBoard,
-            CirclesGlid,
-            AsymmetricCirclesGlid
-        }
-
-        public enum ArUcoDictionary
-        {
-            DICT_4X4_50 = Aruco.DICT_4X4_50,
-            DICT_4X4_100 = Aruco.DICT_4X4_100,
-            DICT_4X4_250 = Aruco.DICT_4X4_250,
-            DICT_4X4_1000 = Aruco.DICT_4X4_1000,
-            DICT_5X5_50 = Aruco.DICT_5X5_50,
-            DICT_5X5_100 = Aruco.DICT_5X5_100,
-            DICT_5X5_250 = Aruco.DICT_5X5_250,
-            DICT_5X5_1000 = Aruco.DICT_5X5_1000,
-            DICT_6X6_50 = Aruco.DICT_6X6_50,
-            DICT_6X6_100 = Aruco.DICT_6X6_100,
-            DICT_6X6_250 = Aruco.DICT_6X6_250,
-            DICT_6X6_1000 = Aruco.DICT_6X6_1000,
-            DICT_7X7_50 = Aruco.DICT_7X7_50,
-            DICT_7X7_100 = Aruco.DICT_7X7_100,
-            DICT_7X7_250 = Aruco.DICT_7X7_250,
-            DICT_7X7_1000 = Aruco.DICT_7X7_1000,
-            DICT_ARUCO_ORIGINAL = Aruco.DICT_ARUCO_ORIGINAL,
-        }
-
-        public enum NumberOfSquaresX
-        {
-            X_1 = 1,
-            X_2,
-            X_3,
-            X_4,
-            X_5,
-            X_6,
-            X_7,
-            X_8,
-            X_9,
-            X_10,
-            X_11,
-            X_12,
-            X_13,
-            X_14,
-            X_15,
-        }
-
-        public enum NumberOfSquaresY
-        {
-            Y_1 = 1,
-            Y_2,
-            Y_3,
-            Y_4,
-            Y_5,
-            Y_6,
-            Y_7,
-            Y_8,
-            Y_9,
-            Y_10,
-            Y_11,
-            Y_12,
-            Y_13,
-            Y_14,
-            Y_15,
-        }
-    }
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.SceneManagement;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Xml.Serialization;
+using System.IO;
+using System.Linq;
+using OpenCVForUnity.CoreModule;
+using OpenCVForUnity.ArucoModule;
+using OpenCVForUnity.UnityUtils.Helper;
+using OpenCVForUnity.ImgprocModule;
+using OpenCVForUnity.UnityUtils;
+using OpenCVForUnity.Calib3dModule;
+using OpenCVForUnity.ImgcodecsModule;
+using HoloLensWithOpenCVForUnity.UnityUtils.Helper;
+using Microsoft.MixedReality.Toolkit.Input;
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    /// <summary>
+    /// HoloLens ArUco Camera Calibration Example
+    /// An example of camera calibration using the aruco module.
+    /// Referring to https://github.com/opencv/opencv_contrib/blob/master/modules/aruco/samples/calibrate_camera.cpp.
+    /// https://github.com/opencv/opencv/blob/master/samples/cpp/tutorial_code/calib3d/camera_calibration/camera_calibration.cpp
+    /// https://docs.opencv.org/3.2.0/da/d13/tutorial_aruco_calibration.html
+    /// https://docs.opencv.org/3.4.0/d7/d21/tutorial_interactive_calibration.html
+    /// </summary>
+    [RequireComponent(typeof(HLCameraStreamToMatHelper))]
+    public class HLArUcoCameraCalibrationExample : MonoBehaviour
+    {
+        /// <summary>
+        /// The preview quad.
+        /// </summary>
+        public GameObject previewQuad;
+
+        /// <summary>
+        /// The marker type.
+        /// </summary>
+        public MarkerType markerType = MarkerType.ChArUcoBoard;
+
+        /// <summary>
+        /// The marker type dropdown.
+        /// </summary>
+        public Dropdown markerTypeDropdown;
+
+        /// <summary>
+        /// The dictionary identifier.
+        /// </summary>
+        public ArUcoDictionary dictionaryId = ArUcoDictionary.DICT_6X6_250;
+
+        /// <summary>
+        /// The dictionary id dropdown.
+        /// </summary>
+        public Dropdown dictionaryIdDropdown;
+
+        /// <summary>
+        /// Number of squares in X direction.
+        /// </summary>
+        public NumberOfSquaresX squaresX = NumberOfSquaresX.X_5;
+
+        /// <summary>
+        /// The squares X dropdown.
+        /// </summary>
+        public Dropdown squaresXDropdown;
+
+        /// <summary>
+        /// Number of squares in X direction.
+        /// </summary>
+        public NumberOfSquaresY squaresY = NumberOfSquaresY.Y_7;
+
+        /// <summary>
+        /// The squares X dropdown.
+        /// </summary>
+        public Dropdown squaresYDropdown;
+
+        /// <summary>
+        /// The save path input field.
+        /// </summary>
+        public InputField savePathInputField;
+
+        /// <summary>
+        /// Determines if refine marker detection. (only valid for ArUco boards)
+        /// </summary>
+        public bool refineMarkerDetection = true;
+
+
+        [Header("Extra Option")]
+
+        /// <summary>
+        /// Determines if calibrates camera using the list of calibration images.
+        /// </summary>
+        [TooltipAttribute("Determines if calibrates camera using the list of calibration images.")]
+        public bool isImagesInputMode = false;
+
+        /// <summary>
+        /// The calibration images directory path.
+        /// Set a relative directory path from the starting point of the "StreamingAssets" folder.  e.g. "calibration_images/".
+        /// </summary>
+        [TooltipAttribute("Set a relative directory path from the starting point of the \"StreamingAssets\" folder.  e.g. \"calibration_images\"")]
+        public string calibrationImagesDirectory = "calibration_images";
+
+        /// <summary>
+        /// The texture.
+        /// </summary>
+        Texture2D texture;
+
+        /// <summary>
+        /// The webcam texture to mat helper.
+        /// </summary>
+        HLCameraStreamToMatHelper webCamTextureToMatHelper;
+
+        /// <summary>
+        /// The bgr mat.
+        /// </summary>
+        Mat bgrMat;
+
+        /// <summary>
+        /// The rgba mat.
+        /// </summary>
+        Mat rgbaMat;
+
+        /// <summary>
+        /// The cameraparam matrix.
+        /// </summary>
+        Mat camMatrix;
+
+        /// <summary>
+        /// The distortion coeffs.
+        /// </summary>
+        MatOfDouble distCoeffs;
+
+        /// <summary>
+        /// The identifiers.
+        /// </summary>
+        Mat ids;
+
+        /// <summary>
+        /// The corners.
+        /// </summary>
+        List<Mat> corners;
+
+        /// <summary>
+        /// The rejected corners.
+        /// </summary>
+        List<Mat> rejectedCorners;
+
+        /// <summary>
+        /// The rvecs.
+        /// </summary>
+        List<Mat> rvecs;
+
+        /// <summary>
+        /// The tvecs.
+        /// </summary>
+        List<Mat> tvecs;
+
+        /// <summary>
+        /// The detector parameters.
+        /// </summary>
+        DetectorParameters detectorParams;
+
+        /// <summary>
+        /// The dictionary.
+        /// </summary>
+        Dictionary dictionary;
+
+        /// <summary>
+        /// The recovered identifiers.
+        /// </summary>
+        Mat recoveredIdxs;
+
+        const int calibrationFlags = 0;// Calib3d.CALIB_FIX_K3 | Calib3d.CALIB_FIX_K4 | Calib3d.CALIB_FIX_K5
+        double repErr = 0;
+        bool shouldCaptureFrame = false;
+
+        // for ChArUcoBoard.
+        // chessboard square side length (normally in meters)
+        const float chArUcoBoradSquareLength = 0.04f;
+        // marker side length (same unit than squareLength)
+        const float chArUcoBoradMarkerLength = 0.02f;
+        const int charucoMinMarkers = 2;
+        Mat charucoCorners;
+        Mat charucoIds;
+        CharucoBoard charucoBoard;
+        List<List<Mat>> allCorners;
+        List<Mat> allIds;
+        List<Mat> allImgs;
+
+        // for OthearMarkers.
+        // square size in some user-defined units (1 by default)
+        const float squareSize = 1f;
+        List<Mat> imagePoints;
+        bool isInitialized = false;
+        bool isCalibrating = false;
+
+        // Use this for initialization
+        IEnumerator Start()
+        {
+            webCamTextureToMatHelper = gameObject.GetComponent<HLCameraStreamToMatHelper>();
+            webCamTextureToMatHelper.outputColorFormat = WebCamTextureToMatHelper.ColorFormat.GRAY;
+
+            // fix the screen orientation.
+            Screen.orientation = ScreenOrientation.LandscapeLeft;
+            // wait for the screen orientation to change.
+            yield return null;
+
+            if (markerTypeDropdown.value != (int)markerType || dictionaryIdDropdown.value != (int)dictionaryId
+                || squaresXDropdown.value != (int)squaresX - 1 || squaresYDropdown.value != (int)squaresY - 1)
+            {
+                markerTypeDropdown.value = (int)markerType;
+                dictionaryIdDropdown.value = (int)dictionaryId;
+                squaresXDropdown.value = (int)squaresX - 1;
+                squaresYDropdown.value = (int)squaresY - 1;
+            }
+            dictionaryIdDropdown.interactable = (markerType == MarkerType.ChArUcoBoard);
+
+#if UNITY_WEBGL && !UNITY_EDITOR
+            isImagesInputMode = false;
+#endif
+            if (isImagesInputMode)
+            {
+                isImagesInputMode = InitializeImagesInputMode();
+            }
+
+            if (!isImagesInputMode)
+            {
+                webCamTextureToMatHelper.Initialize();
+            }
+        }
+
+        /// <summary>
+        /// Raises the webcam texture to mat helper initialized event.
+        /// </summary>
+        public void OnWebCamTextureToMatHelperInitialized()
+        {
+            Debug.Log("OnWebCamTextureToMatHelperInitialized");
+
+            Mat webCamTextureMat = webCamTextureToMatHelper.GetMat();
+
+            InitializeCalibraton(webCamTextureMat);
+
+            // if WebCamera is frontFaceing, flip Mat.
+            webCamTextureToMatHelper.flipHorizontal = webCamTextureToMatHelper.IsFrontFacing();
+        }
+
+        /// <summary>
+        /// Raises the webcam texture to mat helper disposed event.
+        /// </summary>
+        public void OnWebCamTextureToMatHelperDisposed()
+        {
+            Debug.Log("OnWebCamTextureToMatHelperDisposed");
+
+            DisposeCalibraton();
+        }
+
+        /// <summary>
+        /// Raises the webcam texture to mat helper error occurred event.
+        /// </summary>
+        /// <param name="errorCode">Error code.</param>
+        public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
+        {
+            Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
+        }
+
+        // Update is called once per frame
+        void Update()
+        {
+            if (isImagesInputMode)
+                return;
+
+            if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
+            {
+
+                Mat grayMat = webCamTextureToMatHelper.GetMat();
+
+                if (shouldCaptureFrame)
+                {
+                    shouldCaptureFrame = false;
+                    Mat frameMat = grayMat.clone();
+                    double e = CaptureFrame(frameMat);
+                    if (e > 0)
+                        repErr = e;
+                }
+
+                DrawFrame(grayMat, bgrMat);
+                Imgproc.cvtColor(bgrMat, rgbaMat, Imgproc.COLOR_BGR2RGBA);
+
+                Utils.matToTexture2D(rgbaMat, texture);
+            }
+        }
+
+        private void InitializeCalibraton(Mat frameMat)
+        {
+            Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
+
+            float width = frameMat.width();
+            float height = frameMat.height();
+
+            texture = new Texture2D(frameMat.cols(), frameMat.rows(), TextureFormat.RGBA32, false);
+            texture.wrapMode = TextureWrapMode.Clamp;
+
+            previewQuad.GetComponent<MeshRenderer>().material.mainTexture = texture;
+            previewQuad.transform.localScale = new Vector3(0.2f * width / height, 0.2f, 1);
+
+            float imageSizeScale = 1.0f;
+
+            // set cameraparam.
+            camMatrix = CreateCameraMatrix(width, height);
+            Debug.Log("camMatrix " + camMatrix.dump());
+
+            distCoeffs = new MatOfDouble(0, 0, 0, 0, 0);
+            Debug.Log("distCoeffs " + distCoeffs.dump());
+
+            // calibration camera.
+            Size imageSize = new Size(width * imageSizeScale, height * imageSizeScale);
+            double apertureWidth = 0;
+            double apertureHeight = 0;
+            double[] fovx = new double[1];
+            double[] fovy = new double[1];
+            double[] focalLength = new double[1];
+            Point principalPoint = new Point(0, 0);
+            double[] aspectratio = new double[1];
+
+            Calib3d.calibrationMatrixValues(camMatrix, imageSize, apertureWidth, apertureHeight, fovx, fovy, focalLength, principalPoint, aspectratio);
+
+            Debug.Log("imageSize " + imageSize.ToString());
+            Debug.Log("apertureWidth " + apertureWidth);
+            Debug.Log("apertureHeight " + apertureHeight);
+            Debug.Log("fovx " + fovx[0]);
+            Debug.Log("fovy " + fovy[0]);
+            Debug.Log("focalLength " + focalLength[0]);
+            Debug.Log("principalPoint " + principalPoint.ToString());
+            Debug.Log("aspectratio " + aspectratio[0]);
+
+
+            bgrMat = new Mat(frameMat.rows(), frameMat.cols(), CvType.CV_8UC3);
+            rgbaMat = new Mat(frameMat.rows(), frameMat.cols(), CvType.CV_8UC4);
+            ids = new Mat();
+            corners = new List<Mat>();
+            rejectedCorners = new List<Mat>();
+            rvecs = new List<Mat>();
+            tvecs = new List<Mat>();
+
+            detectorParams = DetectorParameters.create();
+            detectorParams.set_cornerRefinementMethod(1);// do cornerSubPix() of OpenCV.
+            dictionary = Aruco.getPredefinedDictionary((int)dictionaryId);
+
+            recoveredIdxs = new Mat();
+
+            charucoCorners = new Mat();
+            charucoIds = new Mat();
+            charucoBoard = CharucoBoard.create((int)squaresX, (int)squaresY, chArUcoBoradSquareLength, chArUcoBoradMarkerLength, dictionary);
+
+
+            allCorners = new List<List<Mat>>();
+            allIds = new List<Mat>();
+            allImgs = new List<Mat>();
+
+            imagePoints = new List<Mat>();
+
+            isInitialized = true;
+        }
+
+        private void DisposeCalibraton()
+        {
+            ResetCalibration();
+
+            if (bgrMat != null)
+                bgrMat.Dispose();
+            if (rgbaMat != null)
+                rgbaMat.Dispose();
+            if (ids != null)
+                ids.Dispose();
+            foreach (var item in corners)
+            {
+                item.Dispose();
+            }
+            corners.Clear();
+            foreach (var item in rejectedCorners)
+            {
+                item.Dispose();
+            }
+            rejectedCorners.Clear();
+            foreach (var item in rvecs)
+            {
+                item.Dispose();
+            }
+            rvecs.Clear();
+            foreach (var item in tvecs)
+            {
+                item.Dispose();
+            }
+            tvecs.Clear();
+
+            if (recoveredIdxs != null)
+                recoveredIdxs.Dispose();
+
+            if (charucoCorners != null)
+                charucoCorners.Dispose();
+            if (charucoIds != null)
+                charucoIds.Dispose();
+            if (charucoBoard != null)
+                charucoBoard.Dispose();
+
+            isInitialized = false;
+        }
+
+        private void DrawFrame(Mat grayMat, Mat bgrMat)
+        {
+            Imgproc.cvtColor(grayMat, bgrMat, Imgproc.COLOR_GRAY2BGR);
+
+            switch (markerType)
+            {
+                default:
+                case MarkerType.ChArUcoBoard:
+                    // undistort image.
+                    Calib3d.undistort(grayMat, grayMat, camMatrix, distCoeffs);
+                    // detect markers.
+                    Aruco.detectMarkers(grayMat, dictionary, corners, ids, detectorParams, rejectedCorners);
+
+                    // refine marker detection.
+                    if (refineMarkerDetection)
+                    {
+                        Aruco.refineDetectedMarkers(grayMat, charucoBoard, corners, ids, rejectedCorners, camMatrix, distCoeffs, 10f, 3f, true, recoveredIdxs, detectorParams);
+                    }
+
+                    // if at least one marker detected
+                    if (ids.total() > 0)
+                    {
+                        Aruco.interpolateCornersCharuco(corners, ids, grayMat, charucoBoard, charucoCorners, charucoIds, camMatrix, distCoeffs, charucoMinMarkers);
+
+                        // draw markers.
+                        Aruco.drawDetectedMarkers(bgrMat, corners, ids, new Scalar(0, 255, 0, 255));
+                        // if at least one charuco corner detected
+                        if (charucoIds.total() > 0)
+                        {
+                            Aruco.drawDetectedCornersCharuco(bgrMat, charucoCorners, charucoIds, new Scalar(0, 0, 255, 255));
+                        }
+                    }
+                    break;
+                case MarkerType.ChessBoard:
+                case MarkerType.CirclesGlid:
+                case MarkerType.AsymmetricCirclesGlid:
+                    // detect markers.
+                    MatOfPoint2f points = new MatOfPoint2f();
+                    bool found = false;
+
+                    switch (markerType)
+                    {
+                        default:
+                        case MarkerType.ChessBoard:
+                            found = Calib3d.findChessboardCorners(grayMat, new Size((int)squaresX, (int)squaresY), points, Calib3d.CALIB_CB_ADAPTIVE_THRESH | Calib3d.CALIB_CB_FAST_CHECK | Calib3d.CALIB_CB_NORMALIZE_IMAGE);
+                            break;
+                        case MarkerType.CirclesGlid:
+                            found = Calib3d.findCirclesGrid(grayMat, new Size((int)squaresX, (int)squaresY), points, Calib3d.CALIB_CB_SYMMETRIC_GRID);
+                            break;
+                        case MarkerType.AsymmetricCirclesGlid:
+                            found = Calib3d.findCirclesGrid(grayMat, new Size((int)squaresX, (int)squaresY), points, Calib3d.CALIB_CB_ASYMMETRIC_GRID);
+                            break;
+                    }
+
+                    if (found)
+                    {
+                        if (markerType == MarkerType.ChessBoard)
+                            Imgproc.cornerSubPix(grayMat, points, new Size(5, 5), new Size(-1, -1), new TermCriteria(TermCriteria.EPS + TermCriteria.COUNT, 30, 0.1));
+
+                        // draw markers.
+                        Calib3d.drawChessboardCorners(bgrMat, new Size((int)squaresX, (int)squaresY), points, found);
+                    }
+                    break;
+            }
+
+            double[] camMatrixArr = new double[(int)camMatrix.total()];
+            camMatrix.get(0, 0, camMatrixArr);
+            double[] distCoeffsArr = new double[(int)distCoeffs.total()];
+            distCoeffs.get(0, 0, distCoeffsArr);
+
+            int ff = Imgproc.FONT_HERSHEY_SIMPLEX;
+            double fs = 0.4;
+            Scalar c = new Scalar(255, 255, 255, 255);
+            int t = 0;
+            int lt = Imgproc.LINE_AA;
+            bool blo = false;
+            int frameCount = (markerType == MarkerType.ChArUcoBoard) ? allCorners.Count : imagePoints.Count;
+            Imgproc.putText(bgrMat, frameCount + " FRAME CAPTURED", new Point(bgrMat.cols() - 300, 20), ff, fs, c, t, lt, blo);
+            Imgproc.putText(bgrMat, "IMAGE_WIDTH: " + bgrMat.width(), new Point(bgrMat.cols() - 300, 40), ff, fs, c, t, lt, blo);
+            Imgproc.putText(bgrMat, "IMAGE_HEIGHT: " + bgrMat.height(), new Point(bgrMat.cols() - 300, 60), ff, fs, c, t, lt, blo);
+            Imgproc.putText(bgrMat, "CALIBRATION_FLAGS: " + calibrationFlags, new Point(bgrMat.cols() - 300, 80), ff, fs, c, t, lt, blo);
+
+            Imgproc.putText(bgrMat, "CAMERA_MATRIX: ", new Point(bgrMat.cols() - 300, 100), ff, fs, c, t, lt, blo);
+            for (int i = 0; i < camMatrixArr.Length; i = i + 3)
+            {
+                Imgproc.putText(bgrMat, "   " + camMatrixArr[i] + ", " + camMatrixArr[i + 1] + ", " + camMatrixArr[i + 2] + ",", new Point(bgrMat.cols() - 300, 120 + 20 * i / 3), ff, fs, c, t, lt, blo);
+            }
+            Imgproc.putText(bgrMat, "DISTORTION_COEFFICIENTS: ", new Point(bgrMat.cols() - 300, 180), ff, fs, c, t, lt, blo);
+            for (int i = 0; i < distCoeffsArr.Length; ++i)
+            {
+                Imgproc.putText(bgrMat, "   " + distCoeffsArr[i] + ",", new Point(bgrMat.cols() - 300, 200 + 20 * i), ff, fs, c, t, lt, blo);
+            }
+            Imgproc.putText(bgrMat, "AVG_REPROJECTION_ERROR: " + repErr, new Point(bgrMat.cols() - 300, 300), ff, fs, c, t, lt, blo);
+
+            if (frameCount == 0)
+                Imgproc.putText(bgrMat, "To calibration start, please press the calibration button or do air tap gesture!", new Point(5, bgrMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar(255, 255, 255, 255), 1, Imgproc.LINE_AA, false);
+        }
+
+        private double CaptureFrame(Mat frameMat)
+        {
+            double repErr = -1;
+
+            switch (markerType)
+            {
+                default:
+                case MarkerType.ChArUcoBoard:
+                    List<Mat> corners = new List<Mat>();
+                    Mat ids = new Mat();
+
+                    // undistort image.
+                    Calib3d.undistort(frameMat, frameMat, camMatrix, distCoeffs);
+                    // detect markers.
+                    Aruco.detectMarkers(frameMat, dictionary, corners, ids, detectorParams, rejectedCorners);
+
+                    if (refineMarkerDetection)
+                    {
+                        Aruco.refineDetectedMarkers(frameMat, charucoBoard, corners, ids, rejectedCorners, camMatrix, distCoeffs, 10f, 3f, true, recoveredIdxs, detectorParams);
+                    }
+
+                    if (ids.total() > 0)
+                    {
+                        Debug.Log("Frame captured.");
+
+                        allCorners.Add(corners);
+                        allIds.Add(ids);
+                        allImgs.Add(frameMat);
+                    }
+                    else
+                    {
+
+                        Debug.Log("Invalid frame.");
+
+                        frameMat.Dispose();
+                        if (ids != null)
+                            ids.Dispose();
+                        foreach (var item in corners)
+                        {
+                            item.Dispose();
+                        }
+                        corners.Clear();
+
+                        return -1;
+                    }
+
+                    // calibrate camera using aruco markers
+                    //double arucoRepErr = CalibrateCameraAruco (allCorners, allIds, charucoBoard, frameMat.size(), camMatrix, distCoeffs, rvecs, tvecs, calibrationFlags);
+                    //Debug.Log ("arucoRepErr: " + arucoRepErr);
+
+                    // calibrate camera using charuco
+                    repErr = CalibrateCameraCharuco(allCorners, allIds, charucoBoard, frameMat.size(), camMatrix, distCoeffs, rvecs, tvecs, calibrationFlags, calibrationFlags);
+
+                    break;
+                case MarkerType.ChessBoard:
+                case MarkerType.CirclesGlid:
+                case MarkerType.AsymmetricCirclesGlid:
+
+                    MatOfPoint2f points = new MatOfPoint2f();
+                    Size patternSize = new Size((int)squaresX, (int)squaresY);
+
+                    bool found = false;
+                    switch (markerType)
+                    {
+                        default:
+                        case MarkerType.ChessBoard:
+                            found = Calib3d.findChessboardCorners(frameMat, patternSize, points, Calib3d.CALIB_CB_ADAPTIVE_THRESH | Calib3d.CALIB_CB_FAST_CHECK | Calib3d.CALIB_CB_NORMALIZE_IMAGE);
+                            break;
+                        case MarkerType.CirclesGlid:
+                            found = Calib3d.findCirclesGrid(frameMat, patternSize, points, Calib3d.CALIB_CB_SYMMETRIC_GRID);
+                            break;
+                        case MarkerType.AsymmetricCirclesGlid:
+                            found = Calib3d.findCirclesGrid(frameMat, patternSize, points, Calib3d.CALIB_CB_ASYMMETRIC_GRID);
+                            break;
+                    }
+
+                    if (found)
+                    {
+                        Debug.Log("Frame captured.");
+                        if (markerType == MarkerType.ChessBoard)
+                            Imgproc.cornerSubPix(frameMat, points, new Size(5, 5), new Size(-1, -1), new TermCriteria(TermCriteria.EPS + TermCriteria.COUNT, 30, 0.1));
+
+                        imagePoints.Add(points);
+                        allImgs.Add(frameMat);
+                    }
+                    else
+                    {
+                        Debug.Log("Invalid frame.");
+                        frameMat.Dispose();
+                        if (points != null)
+                            points.Dispose();
+                        return -1;
+                    }
+
+                    if (imagePoints.Count < 1)
+                    {
+                        Debug.Log("Not enough points for calibration.");
+                        repErr = -1;
+                    }
+                    else
+                    {
+
+                        MatOfPoint3f objectPoint = new MatOfPoint3f(new Mat(imagePoints[0].rows(), 1, CvType.CV_32FC3));
+                        CalcChessboardCorners(patternSize, squareSize, objectPoint, markerType);
+
+                        List<Mat> objectPoints = new List<Mat>();
+                        for (int i = 0; i < imagePoints.Count; ++i)
+                        {
+                            objectPoints.Add(objectPoint);
+                        }
+
+                        repErr = Calib3d.calibrateCamera(objectPoints, imagePoints, frameMat.size(), camMatrix, distCoeffs, rvecs, tvecs, calibrationFlags);
+                        objectPoint.Dispose();
+                    }
+
+                    break;
+            }
+
+            Debug.Log("repErr: " + repErr);
+            Debug.Log("camMatrix: " + camMatrix.dump());
+            Debug.Log("distCoeffs: " + distCoeffs.dump());
+
+            return repErr;
+        }
+
+        private double CalibrateCameraAruco(List<List<Mat>> allCorners, List<Mat> allIds, CharucoBoard board, Size imageSize, Mat cameraMatrix, Mat distCoeffs, List<Mat> rvecs = null, List<Mat> tvecs = null, int calibrationFlags = 0)
+        {
+            // prepare data for calibration
+            int nFrames = allCorners.Count;
+            int allLen = 0;
+            int[] markerCounterPerFrameArr = new int[allCorners.Count];
+            for (int i = 0; i < nFrames; ++i)
+            {
+                markerCounterPerFrameArr[i] = allCorners[i].Count;
+                allLen += allCorners[i].Count;
+            }
+
+            int[] allIdsConcatenatedArr = new int[allLen];
+            int index = 0;
+            for (int j = 0; j < allIds.Count; ++j)
+            {
+                int[] idsArr = new int[(int)allIds[j].total()];
+                allIds[j].get(0, 0, idsArr);
+
+                for (int k = 0; k < idsArr.Length; ++k)
+                {
+                    allIdsConcatenatedArr[index + k] = (int)idsArr[k];
+                }
+                index += idsArr.Length;
+            }
+
+            using (Mat allIdsConcatenated = new Mat(1, allLen, CvType.CV_32SC1))
+            using (Mat markerCounterPerFrame = new Mat(1, nFrames, CvType.CV_32SC1))
+            {
+
+                List<Mat> allCornersConcatenated = new List<Mat>();
+                foreach (var c in allCorners)
+                {
+                    foreach (var m in c)
+                    {
+                        allCornersConcatenated.Add(m);
+                    }
+                }
+
+                allIdsConcatenated.put(0, 0, allIdsConcatenatedArr);
+                markerCounterPerFrame.put(0, 0, markerCounterPerFrameArr);
+
+                if (rvecs == null) rvecs = new List<Mat>();
+                if (tvecs == null) tvecs = new List<Mat>();
+
+                return Aruco.calibrateCameraAruco(allCornersConcatenated, allIdsConcatenated, markerCounterPerFrame, board, imageSize, cameraMatrix, distCoeffs, rvecs, tvecs, calibrationFlags);
+            }
+        }
+
+        private double CalibrateCameraCharuco(List<List<Mat>> allCorners, List<Mat> allIds, CharucoBoard board, Size imageSize, Mat cameraMatrix, Mat distCoeffs, List<Mat> rvecs = null, List<Mat> tvecs = null, int calibrationFlags = 0, int minMarkers = 2)
+        {
+            // prepare data for charuco calibration
+            int nFrames = allCorners.Count;
+            List<Mat> allCharucoCorners = new List<Mat>();
+            List<Mat> allCharucoIds = new List<Mat>();
+            List<Mat> filteredImages = new List<Mat>();
+
+            for (int i = 0; i < nFrames; ++i)
+            {
+                // interpolate using camera parameters
+                Mat currentCharucoCorners = new Mat();
+                Mat currentCharucoIds = new Mat();
+
+                Aruco.interpolateCornersCharuco(allCorners[i], allIds[i], allImgs[i], board, currentCharucoCorners, currentCharucoIds, cameraMatrix, distCoeffs, minMarkers);
+
+                if (charucoIds.total() > 0)
+                {
+                    allCharucoCorners.Add(currentCharucoCorners);
+                    allCharucoIds.Add(currentCharucoIds);
+                    filteredImages.Add(allImgs[i]);
+                }
+                else
+                {
+                    currentCharucoCorners.Dispose();
+                    currentCharucoIds.Dispose();
+                }
+            }
+
+            if (allCharucoCorners.Count < 1)
+            {
+                Debug.Log("Not enough corners for calibration.");
+                return -1;
+            }
+
+            if (rvecs == null) rvecs = new List<Mat>();
+            if (tvecs == null) tvecs = new List<Mat>();
+
+            return Aruco.calibrateCameraCharuco(allCharucoCorners, allCharucoIds, board, imageSize, cameraMatrix, distCoeffs, rvecs, tvecs, calibrationFlags);
+        }
+
+        private void ResetCalibration()
+        {
+            foreach (var corners in allCorners)
+            {
+                foreach (var item in corners)
+                {
+                    item.Dispose();
+                }
+            }
+            allCorners.Clear();
+
+            foreach (var item in allIds)
+            {
+                item.Dispose();
+            }
+            allIds.Clear();
+
+            foreach (var item in allImgs)
+            {
+                item.Dispose();
+            }
+            allImgs.Clear();
+
+            repErr = 0;
+            camMatrix = CreateCameraMatrix(bgrMat.width(), bgrMat.height());
+            distCoeffs = new MatOfDouble(0, 0, 0, 0, 0);
+
+            foreach (var item in imagePoints)
+            {
+                item.Dispose();
+            }
+            imagePoints.Clear();
+        }
+
+        private Mat CreateCameraMatrix(float width, float height)
+        {
+            int max_d = (int)Mathf.Max(width, height);
+            double fx = max_d;
+            double fy = max_d;
+            double cx = width / 2.0f;
+            double cy = height / 2.0f;
+
+            Mat camMatrix = new Mat(3, 3, CvType.CV_64FC1);
+            camMatrix.put(0, 0, fx);
+            camMatrix.put(0, 1, 0);
+            camMatrix.put(0, 2, cx);
+            camMatrix.put(1, 0, 0);
+            camMatrix.put(1, 1, fy);
+            camMatrix.put(1, 2, cy);
+            camMatrix.put(2, 0, 0);
+            camMatrix.put(2, 1, 0);
+            camMatrix.put(2, 2, 1.0f);
+
+            return camMatrix;
+        }
+
+        private void CalcChessboardCorners(Size patternSize, float squareSize, MatOfPoint3f corners, MarkerType markerType)
+        {
+            if ((int)(patternSize.width * patternSize.height) != corners.rows())
+            {
+                Debug.Log("Invalid corners size.");
+                corners.create((int)(patternSize.width * patternSize.height), 1, CvType.CV_32FC3);
+            }
+
+            const int cn = 3;
+            float[] cornersArr = new float[corners.rows() * cn];
+            int width = (int)patternSize.width;
+            int height = (int)patternSize.height;
+
+            switch (markerType)
+            {
+                default:
+                case MarkerType.ChessBoard:
+                case MarkerType.CirclesGlid:
+                    for (int i = 0; i < height; ++i)
+                    {
+                        for (int j = 0; j < width; ++j)
+                        {
+                            cornersArr[(i * width * cn) + (j * cn)] = j * squareSize;
+                            cornersArr[(i * width * cn) + (j * cn) + 1] = i * squareSize;
+                            cornersArr[(i * width * cn) + (j * cn) + 2] = 0;
+                        }
+                    }
+                    corners.put(0, 0, cornersArr);
+
+                    break;
+                case MarkerType.AsymmetricCirclesGlid:
+                    for (int i = 0; i < height; ++i)
+                    {
+                        for (int j = 0; j < width; ++j)
+                        {
+                            cornersArr[(i * width * cn) + (j * cn)] = (2 * j + i % 2) * squareSize;
+                            cornersArr[(i * width * cn) + (j * cn) + 1] = i * squareSize;
+                            cornersArr[(i * width * cn) + (j * cn) + 2] = 0;
+                        }
+                    }
+                    corners.put(0, 0, cornersArr);
+
+                    break;
+            }
+        }
+
+        private bool InitializeImagesInputMode()
+        {
+            if (isInitialized)
+                DisposeCalibraton();
+
+            if (String.IsNullOrEmpty(calibrationImagesDirectory))
+            {
+                Debug.LogWarning("When using the images input mode, please set a calibration images directory path.");
+                return false;
+            }
+
+            string dirPath = Path.Combine(Application.streamingAssetsPath, calibrationImagesDirectory);
+            if (!Directory.Exists(dirPath))
+            {
+                Debug.LogWarning("The directory does not exist.");
+                return false;
+            }
+            string[] imageFiles = GetImageFilesInDirectory(dirPath);
+            if (imageFiles.Length < 1)
+            {
+                Debug.LogWarning("The image file does not exist.");
+                return false;
+            }
+
+            Uri rootPath = new Uri(Application.streamingAssetsPath + System.IO.Path.AltDirectorySeparatorChar);
+            Uri fullPath = new Uri(imageFiles[0]);
+            string relativePath = rootPath.MakeRelativeUri(fullPath).ToString();
+
+            using (Mat gray = Imgcodecs.imread(Utils.getFilePath(relativePath), Imgcodecs.IMREAD_GRAYSCALE))
+            {
+
+                if (gray.total() == 0)
+                {
+                    Debug.LogWarning("Invalid image file.");
+                    return false;
+                }
+
+                using (Mat bgr = new Mat(gray.size(), CvType.CV_8UC3))
+                using (Mat bgra = new Mat(gray.size(), CvType.CV_8UC4))
+                {
+                    InitializeCalibraton(gray);
+
+                    DrawFrame(gray, bgr);
+                    Imgproc.cvtColor(bgr, bgra, Imgproc.COLOR_BGR2RGBA);
+                    Utils.matToTexture2D(bgra, texture);
+                }
+            }
+            return true;
+        }
+
+        private IEnumerator CalibrateCameraUsingImages()
+        {
+            string dirPath = Path.Combine(Application.streamingAssetsPath, calibrationImagesDirectory);
+            string[] imageFiles = GetImageFilesInDirectory(dirPath);
+            if (imageFiles.Length < 1)
+                yield break;
+
+            isCalibrating = true;
+            markerTypeDropdown.interactable = dictionaryIdDropdown.interactable = squaresXDropdown.interactable = squaresYDropdown.interactable = false;
+
+            Uri rootPath = new Uri(Application.streamingAssetsPath + System.IO.Path.AltDirectorySeparatorChar);
+
+            foreach (var path in imageFiles)
+            {
+
+                Uri fullPath = new Uri(path);
+                string relativePath = rootPath.MakeRelativeUri(fullPath).ToString();
+
+                using (Mat gray = Imgcodecs.imread(Utils.getFilePath(relativePath), Imgcodecs.IMREAD_GRAYSCALE))
+                {
+
+                    if (gray.width() != bgrMat.width() || gray.height() != bgrMat.height())
+                        continue;
+
+                    Mat frameMat = gray.clone();
+                    double e = CaptureFrame(frameMat);
+                    if (e > 0)
+                        repErr = e;
+
+                    DrawFrame(gray, bgrMat);
+                    Imgproc.cvtColor(bgrMat, rgbaMat, Imgproc.COLOR_BGR2RGBA);
+
+                    Utils.matToTexture2D(rgbaMat, texture);
+                }
+                yield return new WaitForSeconds(0.5f);
+            }
+
+            isCalibrating = false;
+            markerTypeDropdown.interactable = dictionaryIdDropdown.interactable = squaresXDropdown.interactable = squaresYDropdown.interactable = true;
+        }
+
+        private string[] GetImageFilesInDirectory(string dirPath)
+        {
+            if (Directory.Exists(dirPath))
+            {
+                string[] files = Directory.GetFiles(dirPath, "*.jpg");
+                files = files.Concat(Directory.GetFiles(dirPath, "*.jpeg")).ToArray();
+                files = files.Concat(Directory.GetFiles(dirPath, "*.png")).ToArray();
+                files = files.Concat(Directory.GetFiles(dirPath, "*.tiff")).ToArray();
+                files = files.Concat(Directory.GetFiles(dirPath, "*.tif")).ToArray();
+                return files;
+            }
+            return new string[0];
+        }
+
+        /// <summary>
+        /// Raises the destroy event.
+        /// </summary>
+        void OnDestroy()
+        {
+            if (isImagesInputMode)
+            {
+                DisposeCalibraton();
+            }
+            else
+            {
+                webCamTextureToMatHelper.Dispose();
+            }
+
+            Screen.orientation = ScreenOrientation.AutoRotation;
+        }
+
+        /// <summary>
+        /// Raises the back button click event.
+        /// </summary>
+        public void OnBackButtonClick()
+        {
+            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
+        }
+
+        /// <summary>
+        /// Raises the play button click event.
+        /// </summary>
+        public void OnPlayButtonClick()
+        {
+            if (isImagesInputMode) return;
+
+            webCamTextureToMatHelper.Play();
+        }
+
+        /// <summary>
+        /// Raises the pause button click event.
+        /// </summary>
+        public void OnPauseButtonClick()
+        {
+            if (isImagesInputMode) return;
+
+            webCamTextureToMatHelper.Pause();
+        }
+
+        /// <summary>
+        /// Raises the stop button click event.
+        /// </summary>
+        public void OnStopButtonClick()
+        {
+            if (isImagesInputMode) return;
+
+            webCamTextureToMatHelper.Stop();
+        }
+
+        /// <summary>
+        /// Raises the change camera button click event.
+        /// </summary>
+        public void OnChangeCameraButtonClick()
+        {
+            if (isImagesInputMode) return;
+
+            webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.IsFrontFacing();
+        }
+
+        /// <summary>
+        /// Raises the marker type dropdown value changed event.
+        /// </summary>
+        public void OnMarkerTypeDropdownValueChanged(int result)
+        {
+            if ((int)markerType != result)
+            {
+                markerType = (MarkerType)result;
+
+                dictionaryIdDropdown.interactable = (markerType == MarkerType.ChArUcoBoard);
+
+                if (isImagesInputMode)
+                {
+                    InitializeImagesInputMode();
+                }
+                else
+                {
+                    if (webCamTextureToMatHelper.IsInitialized())
+                        webCamTextureToMatHelper.Initialize();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Raises the dictionary id dropdown value changed event.
+        /// </summary>
+        public void OnDictionaryIdDropdownValueChanged(int result)
+        {
+            if ((int)dictionaryId != result)
+            {
+                dictionaryId = (ArUcoDictionary)result;
+                dictionary = Aruco.getPredefinedDictionary((int)dictionaryId);
+
+                if (isImagesInputMode)
+                {
+                    InitializeImagesInputMode();
+                }
+                else
+                {
+                    if (webCamTextureToMatHelper.IsInitialized())
+                        webCamTextureToMatHelper.Initialize();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Raises the squares X dropdown value changed event.
+        /// </summary>
+        public void OnSquaresXDropdownValueChanged(int result)
+        {
+            if ((int)squaresX != result + 1)
+            {
+                squaresX = (NumberOfSquaresX)(result + 1);
+
+                if (isImagesInputMode)
+                {
+                    InitializeImagesInputMode();
+                }
+                else
+                {
+                    if (webCamTextureToMatHelper.IsInitialized())
+                        webCamTextureToMatHelper.Initialize();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Raises the squares Y dropdown value changed event.
+        /// </summary>
+        public void OnSquaresYDropdownValueChanged(int result)
+        {
+            if ((int)squaresY != result + 1)
+            {
+                squaresY = (NumberOfSquaresY)(result + 1);
+
+                if (isImagesInputMode)
+                {
+                    InitializeImagesInputMode();
+                }
+                else
+                {
+                    if (webCamTextureToMatHelper.IsInitialized())
+                        webCamTextureToMatHelper.Initialize();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Raises the capture button click event.
+        /// </summary>
+        public void OnCaptureButtonClick()
+        {
+            if (isImagesInputMode)
+            {
+                if (!isCalibrating)
+                    InitializeImagesInputMode();
+                StartCoroutine("CalibrateCameraUsingImages");
+            }
+            else
+            {
+                shouldCaptureFrame = true;
+            }
+        }
+
+        /// <summary>
+        /// Raises the reset button click event.
+        /// </summary>
+        public void OnResetButtonClick()
+        {
+            if (isImagesInputMode)
+            {
+                if (!isCalibrating)
+                    InitializeImagesInputMode();
+            }
+            else
+            {
+                ResetCalibration();
+            }
+        }
+
+        /// <summary>
+        /// Raises the save button click event.
+        /// </summary>
+        public void OnSaveButtonClick()
+        {
+            string saveDirectoryPath = Path.Combine(Application.persistentDataPath, "HoloLensArUcoCameraCalibrationExample");
+
+            if (!Directory.Exists(saveDirectoryPath))
+            {
+                Directory.CreateDirectory(saveDirectoryPath);
+            }
+
+            string calibratonDirectoryName = "camera_parameters" + bgrMat.width() + "x" + bgrMat.height();
+            string saveCalibratonFileDirectoryPath = Path.Combine(saveDirectoryPath, calibratonDirectoryName);
+
+            // Clean up old files.
+            if (Directory.Exists(saveCalibratonFileDirectoryPath))
+            {
+                DirectoryInfo directoryInfo = new DirectoryInfo(saveCalibratonFileDirectoryPath);
+                foreach (FileInfo fileInfo in directoryInfo.GetFiles())
+                {
+                    if ((fileInfo.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
+                    {
+                        fileInfo.Attributes = FileAttributes.Normal;
+                    }
+                }
+                if ((directoryInfo.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
+                {
+                    directoryInfo.Attributes = FileAttributes.Directory;
+                }
+                directoryInfo.Delete(true);
+            }
+            Directory.CreateDirectory(saveCalibratonFileDirectoryPath);
+
+            // save the calibraton file.
+            string savePath = Path.Combine(saveCalibratonFileDirectoryPath, calibratonDirectoryName + ".xml");
+            int frameCount = (markerType == MarkerType.ChArUcoBoard) ? allCorners.Count : imagePoints.Count;
+            CameraParameters param = new CameraParameters(frameCount, bgrMat.width(), bgrMat.height(), calibrationFlags, camMatrix, distCoeffs, repErr);
+            XmlSerializer serializer = new XmlSerializer(typeof(CameraParameters));
+            using (var stream = new FileStream(savePath, FileMode.Create))
+            {
+                serializer.Serialize(stream, param);
+            }
+
+            // save the calibration images.
+#if UNITY_WEBGL && !UNITY_EDITOR
+            string format = "jpg";
+            MatOfInt compressionParams = new MatOfInt(Imgcodecs.IMWRITE_JPEG_QUALITY, 100);
+#else
+            string format = "png";
+            MatOfInt compressionParams = new MatOfInt(Imgcodecs.IMWRITE_PNG_COMPRESSION, 0);
+#endif
+            for (int i = 0; i < allImgs.Count; ++i)
+            {
+                Imgcodecs.imwrite(Path.Combine(saveCalibratonFileDirectoryPath, calibratonDirectoryName + "_" + i.ToString("00") + "." + format), allImgs[i], compressionParams);
+            }
+
+            savePathInputField.text = savePath;
+            Debug.Log("Saved the CameraParameters to disk in XML file format.");
+            Debug.Log("savePath: " + savePath);
+        }
+
+        /// <summary>
+        /// Raises the tapped event.
+        /// </summary>
+        public void OnTapped(MixedRealityPointerEventData eventData)
+        {
+            Debug.Log("OnTapped!");
+
+            // Determine if a Gaze pointer is over a GUI.
+            if (eventData.selectedObject != null && (eventData.selectedObject.GetComponent<Button>() != null || eventData.selectedObject.GetComponent<Toggle>() != null
+                 || eventData.selectedObject.GetComponent<Text>() != null || eventData.selectedObject.GetComponent<Image>() != null))
+            {
+                return;
+            }
+
+            OnCaptureButtonClick();
+        }
+
+
+        public enum MarkerType
+        {
+            ChArUcoBoard,
+            ChessBoard,
+            CirclesGlid,
+            AsymmetricCirclesGlid
+        }
+
+        public enum ArUcoDictionary
+        {
+            DICT_4X4_50 = Aruco.DICT_4X4_50,
+            DICT_4X4_100 = Aruco.DICT_4X4_100,
+            DICT_4X4_250 = Aruco.DICT_4X4_250,
+            DICT_4X4_1000 = Aruco.DICT_4X4_1000,
+            DICT_5X5_50 = Aruco.DICT_5X5_50,
+            DICT_5X5_100 = Aruco.DICT_5X5_100,
+            DICT_5X5_250 = Aruco.DICT_5X5_250,
+            DICT_5X5_1000 = Aruco.DICT_5X5_1000,
+            DICT_6X6_50 = Aruco.DICT_6X6_50,
+            DICT_6X6_100 = Aruco.DICT_6X6_100,
+            DICT_6X6_250 = Aruco.DICT_6X6_250,
+            DICT_6X6_1000 = Aruco.DICT_6X6_1000,
+            DICT_7X7_50 = Aruco.DICT_7X7_50,
+            DICT_7X7_100 = Aruco.DICT_7X7_100,
+            DICT_7X7_250 = Aruco.DICT_7X7_250,
+            DICT_7X7_1000 = Aruco.DICT_7X7_1000,
+            DICT_ARUCO_ORIGINAL = Aruco.DICT_ARUCO_ORIGINAL,
+        }
+
+        public enum NumberOfSquaresX
+        {
+            X_1 = 1,
+            X_2,
+            X_3,
+            X_4,
+            X_5,
+            X_6,
+            X_7,
+            X_8,
+            X_9,
+            X_10,
+            X_11,
+            X_12,
+            X_13,
+            X_14,
+            X_15,
+        }
+
+        public enum NumberOfSquaresY
+        {
+            Y_1 = 1,
+            Y_2,
+            Y_3,
+            Y_4,
+            Y_5,
+            Y_6,
+            Y_7,
+            Y_8,
+            Y_9,
+            Y_10,
+            Y_11,
+            Y_12,
+            Y_13,
+            Y_14,
+            Y_15,
+        }
+    }
 }
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoCameraCalibrationExample.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoCameraCalibrationExample.cs.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoCameraCalibrationExample.cs.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoCameraCalibrationExample.cs.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoCameraCalibrationExample.unity b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoCameraCalibrationExample.unity
similarity index 93%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoCameraCalibrationExample.unity
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoCameraCalibrationExample.unity
index 3701642..5dd14de 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoCameraCalibrationExample.unity
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoCameraCalibrationExample.unity.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoCameraCalibrationExample.unity.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoCameraCalibrationExample.unity.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoCameraCalibrationExample.unity.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoExample.cs b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoExample.cs
similarity index 94%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoExample.cs
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoExample.cs
index a354bc5..20a53bb 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoExample.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoExample.cs
@@ -1,1011 +1,1026 @@
-using UnityEngine;
-using UnityEngine.UI;
-using UnityEngine.SceneManagement;
-using System;
-using System.Collections.Generic;
-using System.Threading;
-using System.IO;
-using System.Xml.Serialization;
-using OpenCVForUnity.ArucoModule;
-using OpenCVForUnity.CoreModule;
-using OpenCVForUnity.UnityUtils.Helper;
-using OpenCVForUnity.Calib3dModule;
-using OpenCVForUnity.ImgprocModule;
-using OpenCVForUnity.UnityUtils;
-using HoloLensWithOpenCVForUnity.UnityUtils.Helper;
-using HoloLensCameraStream;
-using Microsoft.MixedReality.Toolkit.Input;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    /// <summary>
-    /// HoloLens ArUco Example
-    /// An example of marker based AR using OpenCVForUnity on Hololens.
-    /// Referring to https://github.com/opencv/opencv_contrib/blob/master/modules/aruco/samples/detect_markers.cpp.
-    /// </summary>
-    [RequireComponent(typeof(HololensCameraStreamToMatHelper), typeof(ImageOptimizationHelper))]
-    public class HoloLensArUcoExample : MonoBehaviour
-    {
-        [HeaderAttribute("Preview")]
-
-        /// <summary>
-        /// The preview quad.
-        /// </summary>
-        public GameObject previewQuad;
-
-        /// <summary>
-        /// Determines if displays the camera preview.
-        /// </summary>
-        public bool displayCameraPreview;
-
-        /// <summary>
-        /// The toggle for switching the camera preview display state.
-        /// </summary>
-        public Toggle displayCameraPreviewToggle;
-
-
-        [HeaderAttribute("Detection")]
-
-        /// <summary>
-        /// Determines if enables the detection.
-        /// </summary>
-        public bool enableDetection = true;
-
-        /// <summary>
-        /// Determines if restores the camera parameters when the file exists.
-        /// </summary>
-        public bool useStoredCameraParameters = false;
-
-        /// <summary>
-        /// The toggle for switching to use the stored camera parameters.
-        /// </summary>
-        public Toggle useStoredCameraParametersToggle;
-
-        /// <summary>
-        /// Determines if enable downscale.
-        /// </summary>
-        public bool enableDownScale;
-
-        /// <summary>
-        /// The enable downscale toggle.
-        /// </summary>
-        public Toggle enableDownScaleToggle;
-
-
-        [HeaderAttribute("AR")]
-
-        /// <summary>
-        /// Determines if applied the pose estimation.
-        /// </summary>
-        public bool applyEstimationPose = true;
-
-        /// <summary>
-        /// The dictionary identifier.
-        /// </summary>
-        public int dictionaryId = Aruco.DICT_6X6_250;
-
-        /// <summary>
-        /// The length of the markers' side. Normally, unit is meters.
-        /// </summary>
-        public float markerLength = 0.188f;
-
-        /// <summary>
-        /// The AR cube.
-        /// </summary>
-        public GameObject arCube;
-
-        /// <summary>
-        /// The AR game object.
-        /// </summary>
-        public ARGameObject arGameObject;
-
-        /// <summary>
-        /// The AR camera.
-        /// </summary>
-        public Camera arCamera;
-
-
-        [Space(10)]
-
-        /// <summary>
-        /// Determines if enable lerp filter.
-        /// </summary>
-        public bool enableLerpFilter;
-
-        /// <summary>
-        /// The enable lerp filter toggle.
-        /// </summary>
-        public Toggle enableLerpFilterToggle;
-
-        /// <summary>
-        /// The cameraparam matrix.
-        /// </summary>
-        Mat camMatrix;
-
-        /// <summary>
-        /// The distCoeffs.
-        /// </summary>
-        MatOfDouble distCoeffs;
-
-        /// <summary>
-        /// The matrix that inverts the Y-axis.
-        /// </summary>
-        Matrix4x4 invertYM;
-
-        /// <summary>
-        /// The matrix that inverts the Z-axis.
-        /// </summary>
-        Matrix4x4 invertZM;
-
-        /// <summary>
-        /// The transformation matrix.
-        /// </summary>
-        Matrix4x4 transformationM;
-
-        /// <summary>
-        /// The transformation matrix for AR.
-        /// </summary>
-        Matrix4x4 ARM;
-
-        /// <summary>
-        /// The identifiers.
-        /// </summary>
-        Mat ids;
-
-        /// <summary>
-        /// The corners.
-        /// </summary>
-        List<Mat> corners;
-
-        /// <summary>
-        /// The rejected corners.
-        /// </summary>
-        List<Mat> rejectedCorners;
-
-        /// <summary>
-        /// The rvecs.
-        /// </summary>
-        Mat rvecs;
-
-        /// <summary>
-        /// The tvecs.
-        /// </summary>
-        Mat tvecs;
-
-        /// <summary>
-        /// The rot mat.
-        /// </summary>
-        Mat rotMat;
-
-        /// <summary>
-        /// The detector parameters.
-        /// </summary>
-        DetectorParameters detectorParams;
-
-        /// <summary>
-        /// The dictionary.
-        /// </summary>
-        Dictionary dictionary;
-
-        /// <summary>
-        /// The webcam texture to mat helper.
-        /// </summary>
-        HololensCameraStreamToMatHelper webCamTextureToMatHelper;
-
-        /// <summary>
-        /// The image optimization helper.
-        /// </summary>
-        ImageOptimizationHelper imageOptimizationHelper;
-
-        Mat rgbMat4preview;
-        Texture2D texture;
-
-
-        readonly static Queue<Action> ExecuteOnMainThread = new Queue<Action>();
-        System.Object sync = new System.Object();
-
-        Mat downScaleMat;
-        float DOWNSCALE_RATIO;
-
-        bool _isThreadRunning = false;
-        bool isThreadRunning
-        {
-            get
-            {
-                lock (sync)
-                    return _isThreadRunning;
-            }
-            set
-            {
-                lock (sync)
-                    _isThreadRunning = value;
-            }
-        }
-
-        bool _isDetecting = false;
-        bool isDetecting
-        {
-            get
-            {
-                lock (sync)
-                    return _isDetecting;
-            }
-            set
-            {
-                lock (sync)
-                    _isDetecting = value;
-            }
-        }
-
-        bool _hasUpdatedARTransformMatrix = false;
-        bool hasUpdatedARTransformMatrix
-        {
-            get
-            {
-                lock (sync)
-                    return _hasUpdatedARTransformMatrix;
-            }
-            set
-            {
-                lock (sync)
-                    _hasUpdatedARTransformMatrix = value;
-            }
-        }
-
-        bool _isDetectingInFrameArrivedThread = false;
-        bool isDetectingInFrameArrivedThread
-        {
-            get
-            {
-                lock (sync)
-                    return _isDetectingInFrameArrivedThread;
-            }
-            set
-            {
-                lock (sync)
-                    _isDetectingInFrameArrivedThread = value;
-            }
-        }
-
-        [HeaderAttribute("Debug")]
-
-        public Text renderFPS;
-        public Text videoFPS;
-        public Text trackFPS;
-        public Text debugStr;
-
-
-        // Use this for initialization
-        protected void Start()
-        {
-            displayCameraPreviewToggle.isOn = displayCameraPreview;
-            useStoredCameraParametersToggle.isOn = useStoredCameraParameters;
-            enableDownScaleToggle.isOn = enableDownScale;
-            enableLerpFilterToggle.isOn = enableLerpFilter;
-
-            imageOptimizationHelper = gameObject.GetComponent<ImageOptimizationHelper>();
-            webCamTextureToMatHelper = gameObject.GetComponent<HololensCameraStreamToMatHelper>();
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            webCamTextureToMatHelper.frameMatAcquired += OnFrameMatAcquired;
-#endif
-            webCamTextureToMatHelper.outputColorFormat = WebCamTextureToMatHelper.ColorFormat.GRAY;
-            webCamTextureToMatHelper.Initialize();
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper initialized event.
-        /// </summary>
-        public void OnWebCamTextureToMatHelperInitialized()
-        {
-            Debug.Log("OnWebCamTextureToMatHelperInitialized");
-
-            Mat grayMat = webCamTextureToMatHelper.GetMat();
-
-            float rawFrameWidth = grayMat.width();
-            float rawFrameHeight = grayMat.height();
-
-            if (enableDownScale)
-            {
-                downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
-                DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
-            }
-            else
-            {
-                downScaleMat = grayMat;
-                DOWNSCALE_RATIO = 1.0f;
-            }
-
-            float width = downScaleMat.width();
-            float height = downScaleMat.height();
-
-            texture = new Texture2D((int)width, (int)height, TextureFormat.RGB24, false);
-            previewQuad.GetComponent<MeshRenderer>().material.mainTexture = texture;
-            previewQuad.transform.localScale = new Vector3(0.2f * width / height, 0.2f, 1);
-            previewQuad.SetActive(displayCameraPreview);
-
-
-            //Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
-
-
-            DebugUtils.AddDebugStr(webCamTextureToMatHelper.GetWidth() + " x " + webCamTextureToMatHelper.GetHeight() + " : " + webCamTextureToMatHelper.GetFPS());
-            if (enableDownScale)
-                DebugUtils.AddDebugStr("enableDownScale = true: " + DOWNSCALE_RATIO + " / " + width + " x " + height);
-
-
-            // create camera matrix and dist coeffs.
-            string loadDirectoryPath = Path.Combine(Application.persistentDataPath, "HoloLensArUcoCameraCalibrationExample");
-            string calibratonDirectoryName = "camera_parameters" + rawFrameWidth + "x" + rawFrameWidth;
-            string loadCalibratonFileDirectoryPath = Path.Combine(loadDirectoryPath, calibratonDirectoryName);
-            string loadPath = Path.Combine(loadCalibratonFileDirectoryPath, calibratonDirectoryName + ".xml");
-            if (useStoredCameraParameters && File.Exists(loadPath))
-            {
-                // If there is a camera parameters stored by HoloLensArUcoCameraCalibrationExample, use it
-
-                CameraParameters param;
-                XmlSerializer serializer = new XmlSerializer(typeof(CameraParameters));
-                using (var stream = new FileStream(loadPath, FileMode.Open))
-                {
-                    param = (CameraParameters)serializer.Deserialize(stream);
-                }
-
-                double fx = param.camera_matrix[0];
-                double fy = param.camera_matrix[4];
-                double cx = param.camera_matrix[2];
-                double cy = param.camera_matrix[5];
-
-                camMatrix = CreateCameraMatrix(fx, fy, cx / DOWNSCALE_RATIO, cy / DOWNSCALE_RATIO);
-                distCoeffs = new MatOfDouble(param.GetDistortionCoefficients());
-
-                Debug.Log("Loaded CameraParameters from a stored XML file.");
-                Debug.Log("loadPath: " + loadPath);
-
-                DebugUtils.AddDebugStr("Loaded CameraParameters from a stored XML file.");
-                DebugUtils.AddDebugStr("loadPath: " + loadPath);
-            }
-            else
-            {
-                if (useStoredCameraParameters && !File.Exists(loadPath))
-                {
-                    DebugUtils.AddDebugStr("The CameraParameters XML file (" + loadPath + ") does not exist.");
-                }
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-
-                CameraIntrinsics cameraIntrinsics = webCamTextureToMatHelper.GetCameraIntrinsics();
-
-                camMatrix = CreateCameraMatrix(cameraIntrinsics.FocalLengthX, cameraIntrinsics.FocalLengthY, cameraIntrinsics.PrincipalPointX / DOWNSCALE_RATIO, cameraIntrinsics.PrincipalPointY / DOWNSCALE_RATIO);
-                distCoeffs = new MatOfDouble(cameraIntrinsics.RadialDistK1, cameraIntrinsics.RadialDistK2, cameraIntrinsics.RadialDistK3, cameraIntrinsics.TangentialDistP1, cameraIntrinsics.TangentialDistP2);
-
-                Debug.Log("Created CameraParameters from VideoMediaFrame.CameraIntrinsics on device.");
-
-                DebugUtils.AddDebugStr("Created CameraParameters from VideoMediaFrame.CameraIntrinsics on device.");
-
-#else
-
-                // The camera matrix value of Hololens camera 896x504 size.
-                // For details on the camera matrix, please refer to this page. (http://docs.opencv.org/2.4/modules/calib3d/doc/camera_calibration_and_3d_reconstruction.html)
-                // These values ​​are unique to my device, obtained from the "Windows.Media.Devices.Core.CameraIntrinsics" class. (https://docs.microsoft.com/en-us/uwp/api/windows.media.devices.core.cameraintrinsics)
-                // Can get these values by using this helper script. (https://github.com/EnoxSoftware/HoloLensWithOpenCVForUnityExample/tree/master/Assets/HololensCameraIntrinsicsChecker/CameraIntrinsicsCheckerHelper)
-                double fx = 1035.149;//focal length x.
-                double fy = 1034.633;//focal length y.
-                double cx = 404.9134;//principal point x.
-                double cy = 236.2834;//principal point y.
-                double distCoeffs1 = 0.2036923;//radial distortion coefficient k1.
-                double distCoeffs2 = -0.2035773;//radial distortion coefficient k2.
-                double distCoeffs3 = 0.0;//tangential distortion coefficient p1.
-                double distCoeffs4 = 0.0;//tangential distortion coefficient p2.
-                double distCoeffs5 = -0.2388065;//radial distortion coefficient k3.
-
-                camMatrix = CreateCameraMatrix(fx, fy, cx / DOWNSCALE_RATIO, cy / DOWNSCALE_RATIO);
-                distCoeffs = new MatOfDouble(distCoeffs1, distCoeffs2, distCoeffs3, distCoeffs4, distCoeffs5);
-
-                Debug.Log("Created a dummy CameraParameters (896x504).");
-
-                DebugUtils.AddDebugStr("Created a dummy CameraParameters (896x504).");
-#endif
-            }
-
-            Debug.Log("camMatrix " + camMatrix.dump());
-            Debug.Log("distCoeffs " + distCoeffs.dump());
-
-            //DebugUtils.AddDebugStr("camMatrix " + camMatrix.dump());
-            //DebugUtils.AddDebugStr("distCoeffs " + distCoeffs.dump());
-
-
-            //Calibration camera
-            Size imageSize = new Size(width, height);
-            double apertureWidth = 0;
-            double apertureHeight = 0;
-            double[] fovx = new double[1];
-            double[] fovy = new double[1];
-            double[] focalLength = new double[1];
-            Point principalPoint = new Point(0, 0);
-            double[] aspectratio = new double[1];
-
-            Calib3d.calibrationMatrixValues(camMatrix, imageSize, apertureWidth, apertureHeight, fovx, fovy, focalLength, principalPoint, aspectratio);
-
-            Debug.Log("imageSize " + imageSize.ToString());
-            Debug.Log("apertureWidth " + apertureWidth);
-            Debug.Log("apertureHeight " + apertureHeight);
-            Debug.Log("fovx " + fovx[0]);
-            Debug.Log("fovy " + fovy[0]);
-            Debug.Log("focalLength " + focalLength[0]);
-            Debug.Log("principalPoint " + principalPoint.ToString());
-            Debug.Log("aspectratio " + aspectratio[0]);
-
-            // Display objects near the camera.
-            arCamera.nearClipPlane = 0.01f;
-
-            ids = new Mat();
-            corners = new List<Mat>();
-            rejectedCorners = new List<Mat>();
-            rvecs = new Mat();
-            tvecs = new Mat();
-            rotMat = new Mat(3, 3, CvType.CV_64FC1);
-
-
-            transformationM = new Matrix4x4();
-
-            invertYM = Matrix4x4.TRS(Vector3.zero, Quaternion.identity, new Vector3(1, -1, 1));
-            Debug.Log("invertYM " + invertYM.ToString());
-
-            invertZM = Matrix4x4.TRS(Vector3.zero, Quaternion.identity, new Vector3(1, 1, -1));
-            Debug.Log("invertZM " + invertZM.ToString());
-
-            detectorParams = DetectorParameters.create();
-            dictionary = Aruco.getPredefinedDictionary(dictionaryId);
-
-
-            //If WebCamera is frontFaceing, flip Mat.
-            webCamTextureToMatHelper.flipHorizontal = webCamTextureToMatHelper.IsFrontFacing();
-
-            rgbMat4preview = new Mat();
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper disposed event.
-        /// </summary>
-        public void OnWebCamTextureToMatHelperDisposed()
-        {
-            Debug.Log("OnWebCamTextureToMatHelperDisposed");
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-
-            while (isDetectingInFrameArrivedThread)
-            {
-                //Wait detecting stop
-            }
-
-            lock (ExecuteOnMainThread)
-            {
-                ExecuteOnMainThread.Clear();
-            }
-
-#else
-
-            StopThread();
-            lock (ExecuteOnMainThread)
-            {
-                ExecuteOnMainThread.Clear();
-            }
-            isDetecting = false;
-
-#endif
-
-            hasUpdatedARTransformMatrix = false;
-
-            if (ids != null)
-                ids.Dispose();
-            foreach (var item in corners)
-            {
-                item.Dispose();
-            }
-            corners.Clear();
-            foreach (var item in rejectedCorners)
-            {
-                item.Dispose();
-            }
-            rejectedCorners.Clear();
-            if (rvecs != null)
-                rvecs.Dispose();
-            if (tvecs != null)
-                tvecs.Dispose();
-            if (rotMat != null)
-                rotMat.Dispose();
-
-            if (rgbMat4preview != null)
-                rgbMat4preview.Dispose();
-
-            if (debugStr != null)
-            {
-                debugStr.text = string.Empty;
-            }
-            DebugUtils.ClearDebugStr();
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper error occurred event.
-        /// </summary>
-        /// <param name="errorCode">Error code.</param>
-        public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
-        {
-            Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
-        }
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-        public void OnFrameMatAcquired(Mat grayMat, Matrix4x4 projectionMatrix, Matrix4x4 cameraToWorldMatrix, CameraIntrinsics cameraIntrinsics)
-        {
-            isDetectingInFrameArrivedThread = true;
-
-            DebugUtils.VideoTick();
-
-            Mat downScaleMat = null;
-            float DOWNSCALE_RATIO;
-            if (enableDownScale)
-            {
-                downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
-                DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
-            }
-            else
-            {
-                downScaleMat = grayMat;
-                DOWNSCALE_RATIO = 1.0f;
-            }
-
-            Mat camMatrix = null;
-            MatOfDouble distCoeffs = null;
-            if (useStoredCameraParameters)
-            {
-                camMatrix = this.camMatrix;
-                distCoeffs = this.distCoeffs;
-            }
-            else
-            {
-                camMatrix = CreateCameraMatrix(cameraIntrinsics.FocalLengthX, cameraIntrinsics.FocalLengthY, cameraIntrinsics.PrincipalPointX / DOWNSCALE_RATIO, cameraIntrinsics.PrincipalPointY / DOWNSCALE_RATIO);
-                distCoeffs = new MatOfDouble(cameraIntrinsics.RadialDistK1, cameraIntrinsics.RadialDistK2, cameraIntrinsics.RadialDistK3, cameraIntrinsics.TangentialDistP1, cameraIntrinsics.TangentialDistP2);
-            }
-
-            if (enableDetection)
-            {
-                // Detect markers and estimate Pose
-                Aruco.detectMarkers(downScaleMat, dictionary, corners, ids, detectorParams, rejectedCorners, camMatrix, distCoeffs);
-
-                if (applyEstimationPose && ids.total() > 0)
-                {
-                    Aruco.estimatePoseSingleMarkers(corners, markerLength, camMatrix, distCoeffs, rvecs, tvecs);
-
-                    for (int i = 0; i < ids.total(); i++)
-                    {
-                        //This example can display ARObject on only first detected marker.
-                        if (i == 0)
-                        {
-                            // Convert to unity pose data.
-                            double[] rvecArr = new double[3];
-                            rvecs.get(0, 0, rvecArr);
-                            double[] tvecArr = new double[3];
-                            tvecs.get(0, 0, tvecArr);
-                            tvecArr[2] /= DOWNSCALE_RATIO;
-                            PoseData poseData = ARUtils.ConvertRvecTvecToPoseData(rvecArr, tvecArr);
-
-                            // Create transform matrix.
-                            transformationM = Matrix4x4.TRS(poseData.pos, poseData.rot, Vector3.one);
-
-                            lock (sync)
-                            {
-                                // Right-handed coordinates system (OpenCV) to left-handed one (Unity)
-                                ARM = invertYM * transformationM;
-
-                                // Apply Z-axis inverted matrix.
-                                ARM = ARM * invertZM;
-                            }
-
-                            hasUpdatedARTransformMatrix = true;
-
-                            break;
-                        }
-                    }
-                }
-            }
-
-            Mat rgbMat4preview = null;
-            if (displayCameraPreview)
-            {
-                rgbMat4preview = new Mat();
-                Imgproc.cvtColor(downScaleMat, rgbMat4preview, Imgproc.COLOR_GRAY2RGB);
-
-                if (ids.total() > 0)
-                {
-                    Aruco.drawDetectedMarkers(rgbMat4preview, corners, ids, new Scalar(0, 255, 0));
-
-                    if (applyEstimationPose)
-                    {
-                        for (int i = 0; i < ids.total(); i++)
-                        {
-                            using (Mat rvec = new Mat(rvecs, new OpenCVForUnity.CoreModule.Rect(0, i, 1, 1)))
-                            using (Mat tvec = new Mat(tvecs, new OpenCVForUnity.CoreModule.Rect(0, i, 1, 1)))
-                            {
-                                // In this example we are processing with RGB color image, so Axis-color correspondences are X: blue, Y: green, Z: red. (Usually X: red, Y: green, Z: blue)
-                                Calib3d.drawFrameAxes(rgbMat4preview, camMatrix, distCoeffs, rvec, tvec, markerLength * 0.5f);
-                            }
-                        }
-                    }
-                }
-            }
-
-            DebugUtils.TrackTick();
-
-            Enqueue(() =>
-            {
-                if (!webCamTextureToMatHelper.IsPlaying()) return;
-
-                if (displayCameraPreview && rgbMat4preview != null)
-                {
-                    Utils.fastMatToTexture2D(rgbMat4preview, texture);
-                    rgbMat4preview.Dispose();
-                }
-
-                if (applyEstimationPose)
-                {
-                    if (hasUpdatedARTransformMatrix)
-                    {
-                        hasUpdatedARTransformMatrix = false;
-
-                        lock (sync)
-                        {
-                            // Apply camera transform matrix.
-                            ARM = cameraToWorldMatrix * invertZM * ARM;
-
-                            if (enableLerpFilter)
-                            {
-                                arGameObject.SetMatrix4x4(ARM);
-                            }
-                            else
-                            {
-                                ARUtils.SetTransformFromMatrix(arGameObject.transform, ref ARM);
-                            }
-                        }
-                    }
-                }
-
-                grayMat.Dispose();
-            });
-
-            isDetectingInFrameArrivedThread = false;
-        }
-
-        private void Update()
-        {
-            lock (ExecuteOnMainThread)
-            {
-                while (ExecuteOnMainThread.Count > 0)
-                {
-                    ExecuteOnMainThread.Dequeue().Invoke();
-                }
-            }
-        }
-
-        private void Enqueue(Action action)
-        {
-            lock (ExecuteOnMainThread)
-            {
-                ExecuteOnMainThread.Enqueue(action);
-            }
-        }
-
-#else
-
-        // Update is called once per frame
-        void Update()
-        {
-            lock (ExecuteOnMainThread)
-            {
-                while (ExecuteOnMainThread.Count > 0)
-                {
-                    ExecuteOnMainThread.Dequeue().Invoke();
-                }
-            }
-
-            if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
-            {
-                DebugUtils.VideoTick();
-
-                if (enableDetection && !isDetecting)
-                {
-                    isDetecting = true;
-
-                    Mat grayMat = webCamTextureToMatHelper.GetMat();
-
-                    if (enableDownScale)
-                    {
-                        downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
-                        DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
-                    }
-                    else
-                    {
-                        downScaleMat = grayMat;
-                        DOWNSCALE_RATIO = 1.0f;
-                    }
-
-                    StartThread(ThreadWorker);
-                }
-            }
-        }
-
-        private void StartThread(Action action)
-        {
-#if WINDOWS_UWP || (!UNITY_WSA_10_0 && (NET_4_6 || NET_STANDARD_2_0))
-            System.Threading.Tasks.Task.Run(() => action());
-#else
-            ThreadPool.QueueUserWorkItem(_ => action());
-#endif
-        }
-
-        private void StopThread()
-        {
-            if (!isThreadRunning)
-                return;
-
-            while (isThreadRunning)
-            {
-                //Wait threading stop
-            }
-        }
-
-        private void ThreadWorker()
-        {
-            isThreadRunning = true;
-
-            DetectARUcoMarker();
-
-            lock (ExecuteOnMainThread)
-            {
-                if (ExecuteOnMainThread.Count == 0)
-                {
-                    ExecuteOnMainThread.Enqueue(() =>
-                    {
-                        OnDetectionDone();
-                    });
-                }
-            }
-
-            isThreadRunning = false;
-        }
-
-        private void DetectARUcoMarker()
-        {
-            // Detect markers and estimate Pose
-            Aruco.detectMarkers(downScaleMat, dictionary, corners, ids, detectorParams, rejectedCorners, camMatrix, distCoeffs);
-
-            if (applyEstimationPose && ids.total() > 0)
-            {
-                Aruco.estimatePoseSingleMarkers(corners, markerLength, camMatrix, distCoeffs, rvecs, tvecs);
-
-                for (int i = 0; i < ids.total(); i++)
-                {
-                    //This example can display ARObject on only first detected marker.
-                    if (i == 0)
-                    {
-                        // Convert to unity pose data.
-                        double[] rvecArr = new double[3];
-                        rvecs.get(0, 0, rvecArr);
-                        double[] tvecArr = new double[3];
-                        tvecs.get(0, 0, tvecArr);
-                        tvecArr[2] /= DOWNSCALE_RATIO;
-                        PoseData poseData = ARUtils.ConvertRvecTvecToPoseData(rvecArr, tvecArr);
-
-                        // Create transform matrix.
-                        transformationM = Matrix4x4.TRS(poseData.pos, poseData.rot, Vector3.one);
-
-                        // Right-handed coordinates system (OpenCV) to left-handed one (Unity)
-                        // https://stackoverflow.com/questions/30234945/change-handedness-of-a-row-major-4x4-transformation-matrix
-                        ARM = invertYM * transformationM * invertYM;
-
-                        // Apply Y-axis and Z-axis refletion matrix. (Adjust the posture of the AR object)
-                        ARM = ARM * invertYM * invertZM;
-
-                        hasUpdatedARTransformMatrix = true;
-
-                        break;
-                    }
-                }
-            }
-        }
-
-        private void OnDetectionDone()
-        {
-            DebugUtils.TrackTick();
-
-            if (displayCameraPreview)
-            {
-                Imgproc.cvtColor(downScaleMat, rgbMat4preview, Imgproc.COLOR_GRAY2RGB);
-
-                if (ids.total() > 0)
-                {
-                    Aruco.drawDetectedMarkers(rgbMat4preview, corners, ids, new Scalar(0, 255, 0));
-
-                    if (applyEstimationPose)
-                    {
-                        for (int i = 0; i < ids.total(); i++)
-                        {
-                            using (Mat rvec = new Mat(rvecs, new OpenCVForUnity.CoreModule.Rect(0, i, 1, 1)))
-                            using (Mat tvec = new Mat(tvecs, new OpenCVForUnity.CoreModule.Rect(0, i, 1, 1)))
-                            {
-                                // In this example we are processing with RGB color image, so Axis-color correspondences are X: blue, Y: green, Z: red. (Usually X: red, Y: green, Z: blue)
-                                Calib3d.drawFrameAxes(rgbMat4preview, camMatrix, distCoeffs, rvec, tvec, markerLength * 0.5f);
-                            }
-                        }
-                    }
-                }
-
-                Utils.fastMatToTexture2D(rgbMat4preview, texture);
-            }
-
-            if (applyEstimationPose)
-            {
-                if (hasUpdatedARTransformMatrix)
-                {
-                    hasUpdatedARTransformMatrix = false;
-
-                    // Apply the cameraToWorld matrix with the Z-axis inverted.
-                    ARM = arCamera.cameraToWorldMatrix * invertZM * ARM;
-
-                    if (enableLerpFilter)
-                    {
-                        arGameObject.SetMatrix4x4(ARM);
-                    }
-                    else
-                    {
-                        ARUtils.SetTransformFromMatrix(arGameObject.transform, ref ARM);
-                    }
-                }
-            }
-
-            isDetecting = false;
-        }
-#endif
-
-        private Mat CreateCameraMatrix(double fx, double fy, double cx, double cy)
-        {
-            Mat camMatrix = new Mat(3, 3, CvType.CV_64FC1);
-            camMatrix.put(0, 0, fx);
-            camMatrix.put(0, 1, 0);
-            camMatrix.put(0, 2, cx);
-            camMatrix.put(1, 0, 0);
-            camMatrix.put(1, 1, fy);
-            camMatrix.put(1, 2, cy);
-            camMatrix.put(2, 0, 0);
-            camMatrix.put(2, 1, 0);
-            camMatrix.put(2, 2, 1.0f);
-
-            return camMatrix;
-        }
-
-        void LateUpdate()
-        {
-            DebugUtils.RenderTick();
-            float renderDeltaTime = DebugUtils.GetRenderDeltaTime();
-            float videoDeltaTime = DebugUtils.GetVideoDeltaTime();
-            float trackDeltaTime = DebugUtils.GetTrackDeltaTime();
-
-            if (renderFPS != null)
-            {
-                renderFPS.text = string.Format("Render: {0:0.0} ms ({1:0.} fps)", renderDeltaTime, 1000.0f / renderDeltaTime);
-            }
-            if (videoFPS != null)
-            {
-                videoFPS.text = string.Format("Video: {0:0.0} ms ({1:0.} fps)", videoDeltaTime, 1000.0f / videoDeltaTime);
-            }
-            if (trackFPS != null)
-            {
-                trackFPS.text = string.Format("Track:   {0:0.0} ms ({1:0.} fps)", trackDeltaTime, 1000.0f / trackDeltaTime);
-            }
-            if (debugStr != null)
-            {
-                if (DebugUtils.GetDebugStrLength() > 0)
-                {
-                    if (debugStr.preferredHeight >= debugStr.rectTransform.rect.height)
-                        debugStr.text = string.Empty;
-
-                    debugStr.text += DebugUtils.GetDebugStr();
-                    DebugUtils.ClearDebugStr();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the destroy event.
-        /// </summary>
-        void OnDestroy()
-        {
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            webCamTextureToMatHelper.frameMatAcquired -= OnFrameMatAcquired;
-#endif
-            webCamTextureToMatHelper.Dispose();
-            imageOptimizationHelper.Dispose();
-        }
-
-        /// <summary>
-        /// Raises the back button click event.
-        /// </summary>
-        public void OnBackButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
-        }
-
-        /// <summary>
-        /// Raises the play button click event.
-        /// </summary>
-        public void OnPlayButtonClick()
-        {
-            webCamTextureToMatHelper.Play();
-        }
-
-        /// <summary>
-        /// Raises the pause button click event.
-        /// </summary>
-        public void OnPauseButtonClick()
-        {
-            webCamTextureToMatHelper.Pause();
-        }
-
-        /// <summary>
-        /// Raises the stop button click event.
-        /// </summary>
-        public void OnStopButtonClick()
-        {
-            webCamTextureToMatHelper.Stop();
-        }
-
-        /// <summary>
-        /// Raises the change camera button click event.
-        /// </summary>
-        public void OnChangeCameraButtonClick()
-        {
-            webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.IsFrontFacing();
-        }
-
-        /// <summary>
-        /// Raises the display camera preview toggle value changed event.
-        /// </summary>
-        public void OnDisplayCamreaPreviewToggleValueChanged()
-        {
-            displayCameraPreview = displayCameraPreviewToggle.isOn;
-
-            previewQuad.SetActive(displayCameraPreview);
-        }
-
-        /// <summary>
-        /// Raises the use stored camera parameters toggle value changed event.
-        /// </summary>
-        public void OnUseStoredCameraParametersToggleValueChanged()
-        {
-            useStoredCameraParameters = useStoredCameraParametersToggle.isOn;
-
-            if (webCamTextureToMatHelper != null && webCamTextureToMatHelper.IsInitialized())
-            {
-                webCamTextureToMatHelper.Initialize();
-            }
-        }
-
-        /// <summary>
-        /// Raises the enable downscale toggle value changed event.
-        /// </summary>
-        public void OnEnableDownScaleToggleValueChanged()
-        {
-            enableDownScale = enableDownScaleToggle.isOn;
-
-            if (webCamTextureToMatHelper != null && webCamTextureToMatHelper.IsInitialized())
-            {
-                webCamTextureToMatHelper.Initialize();
-            }
-        }
-
-        /// <summary>
-        /// Raises the enable lerp filter toggle value changed event.
-        /// </summary>
-        public void OnEnableLerpFilterToggleValueChanged()
-        {
-            enableLerpFilter = enableLerpFilterToggle.isOn;
-        }
-    }
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.SceneManagement;
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.IO;
+using System.Xml.Serialization;
+using OpenCVForUnity.ArucoModule;
+using OpenCVForUnity.CoreModule;
+using OpenCVForUnity.UnityUtils.Helper;
+using OpenCVForUnity.Calib3dModule;
+using OpenCVForUnity.ImgprocModule;
+using OpenCVForUnity.UnityUtils;
+using HoloLensWithOpenCVForUnity.UnityUtils.Helper;
+using HoloLensCameraStream;
+using Microsoft.MixedReality.Toolkit.Input;
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    /// <summary>
+    /// HoloLens ArUco Example
+    /// An example of marker based AR using OpenCVForUnity on Hololens.
+    /// Referring to https://github.com/opencv/opencv_contrib/blob/master/modules/aruco/samples/detect_markers.cpp.
+    /// </summary>
+    [RequireComponent(typeof(HLCameraStreamToMatHelper), typeof(ImageOptimizationHelper))]
+    public class HLArUcoExample : MonoBehaviour
+    {
+        [HeaderAttribute("Preview")]
+
+        /// <summary>
+        /// The preview quad.
+        /// </summary>
+        public GameObject previewQuad;
+
+        /// <summary>
+        /// Determines if displays the camera preview.
+        /// </summary>
+        public bool displayCameraPreview;
+
+        /// <summary>
+        /// The toggle for switching the camera preview display state.
+        /// </summary>
+        public Toggle displayCameraPreviewToggle;
+
+
+        [HeaderAttribute("Detection")]
+
+        /// <summary>
+        /// Determines if enables the detection.
+        /// </summary>
+        public bool enableDetection = true;
+
+        /// <summary>
+        /// Determines if restores the camera parameters when the file exists.
+        /// </summary>
+        public bool useStoredCameraParameters = false;
+
+        /// <summary>
+        /// The toggle for switching to use the stored camera parameters.
+        /// </summary>
+        public Toggle useStoredCameraParametersToggle;
+
+        /// <summary>
+        /// Determines if enable downscale.
+        /// </summary>
+        public bool enableDownScale;
+
+        /// <summary>
+        /// The enable downscale toggle.
+        /// </summary>
+        public Toggle enableDownScaleToggle;
+
+
+        [HeaderAttribute("AR")]
+
+        /// <summary>
+        /// Determines if applied the pose estimation.
+        /// </summary>
+        public bool applyEstimationPose = true;
+
+        /// <summary>
+        /// The dictionary identifier.
+        /// </summary>
+        public int dictionaryId = Aruco.DICT_6X6_250;
+
+        /// <summary>
+        /// The length of the markers' side. Normally, unit is meters.
+        /// </summary>
+        public float markerLength = 0.188f;
+
+        /// <summary>
+        /// The AR cube.
+        /// </summary>
+        public GameObject arCube;
+
+        /// <summary>
+        /// The AR game object.
+        /// </summary>
+        public ARGameObject arGameObject;
+
+        /// <summary>
+        /// The AR camera.
+        /// </summary>
+        public Camera arCamera;
+
+
+        [Space(10)]
+
+        /// <summary>
+        /// Determines if enable lerp filter.
+        /// </summary>
+        public bool enableLerpFilter;
+
+        /// <summary>
+        /// The enable lerp filter toggle.
+        /// </summary>
+        public Toggle enableLerpFilterToggle;
+
+        /// <summary>
+        /// The cameraparam matrix.
+        /// </summary>
+        Mat camMatrix;
+
+        /// <summary>
+        /// The distCoeffs.
+        /// </summary>
+        MatOfDouble distCoeffs;
+
+        /// <summary>
+        /// The matrix that inverts the Y-axis.
+        /// </summary>
+        Matrix4x4 invertYM;
+
+        /// <summary>
+        /// The matrix that inverts the Z-axis.
+        /// </summary>
+        Matrix4x4 invertZM;
+
+        /// <summary>
+        /// The transformation matrix.
+        /// </summary>
+        Matrix4x4 transformationM;
+
+        /// <summary>
+        /// The transformation matrix for AR.
+        /// </summary>
+        Matrix4x4 ARM;
+
+        /// <summary>
+        /// The identifiers.
+        /// </summary>
+        Mat ids;
+
+        /// <summary>
+        /// The corners.
+        /// </summary>
+        List<Mat> corners;
+
+        /// <summary>
+        /// The rejected corners.
+        /// </summary>
+        List<Mat> rejectedCorners;
+
+        /// <summary>
+        /// The rvecs.
+        /// </summary>
+        Mat rvecs;
+
+        /// <summary>
+        /// The tvecs.
+        /// </summary>
+        Mat tvecs;
+
+        /// <summary>
+        /// The rot mat.
+        /// </summary>
+        Mat rotMat;
+
+        /// <summary>
+        /// The detector parameters.
+        /// </summary>
+        DetectorParameters detectorParams;
+
+        /// <summary>
+        /// The dictionary.
+        /// </summary>
+        Dictionary dictionary;
+
+        /// <summary>
+        /// The webcam texture to mat helper.
+        /// </summary>
+        HLCameraStreamToMatHelper webCamTextureToMatHelper;
+
+        /// <summary>
+        /// The image optimization helper.
+        /// </summary>
+        ImageOptimizationHelper imageOptimizationHelper;
+
+        Mat rgbMat4preview;
+        Texture2D texture;
+
+
+        readonly static Queue<Action> ExecuteOnMainThread = new Queue<Action>();
+        System.Object sync = new System.Object();
+
+        Mat downScaleMat;
+        float DOWNSCALE_RATIO;
+
+        bool _isThreadRunning = false;
+        bool isThreadRunning
+        {
+            get
+            {
+                lock (sync)
+                    return _isThreadRunning;
+            }
+            set
+            {
+                lock (sync)
+                    _isThreadRunning = value;
+            }
+        }
+
+        bool _isDetecting = false;
+        bool isDetecting
+        {
+            get
+            {
+                lock (sync)
+                    return _isDetecting;
+            }
+            set
+            {
+                lock (sync)
+                    _isDetecting = value;
+            }
+        }
+
+        bool _hasUpdatedARTransformMatrix = false;
+        bool hasUpdatedARTransformMatrix
+        {
+            get
+            {
+                lock (sync)
+                    return _hasUpdatedARTransformMatrix;
+            }
+            set
+            {
+                lock (sync)
+                    _hasUpdatedARTransformMatrix = value;
+            }
+        }
+
+        bool _isDetectingInFrameArrivedThread = false;
+        bool isDetectingInFrameArrivedThread
+        {
+            get
+            {
+                lock (sync)
+                    return _isDetectingInFrameArrivedThread;
+            }
+            set
+            {
+                lock (sync)
+                    _isDetectingInFrameArrivedThread = value;
+            }
+        }
+
+        [HeaderAttribute("Debug")]
+
+        public Text renderFPS;
+        public Text videoFPS;
+        public Text trackFPS;
+        public Text debugStr;
+
+
+        // Use this for initialization
+        protected void Start()
+        {
+            displayCameraPreviewToggle.isOn = displayCameraPreview;
+            useStoredCameraParametersToggle.isOn = useStoredCameraParameters;
+            enableDownScaleToggle.isOn = enableDownScale;
+            enableLerpFilterToggle.isOn = enableLerpFilter;
+
+            imageOptimizationHelper = gameObject.GetComponent<ImageOptimizationHelper>();
+            webCamTextureToMatHelper = gameObject.GetComponent<HLCameraStreamToMatHelper>();
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+            webCamTextureToMatHelper.frameMatAcquired += OnFrameMatAcquired;
+#endif
+            webCamTextureToMatHelper.outputColorFormat = WebCamTextureToMatHelper.ColorFormat.GRAY;
+            webCamTextureToMatHelper.Initialize();
+        }
+
+        /// <summary>
+        /// Raises the web cam texture to mat helper initialized event.
+        /// </summary>
+        public void OnWebCamTextureToMatHelperInitialized()
+        {
+            Debug.Log("OnWebCamTextureToMatHelperInitialized");
+
+            Mat grayMat = webCamTextureToMatHelper.GetMat();
+
+            float rawFrameWidth = grayMat.width();
+            float rawFrameHeight = grayMat.height();
+
+            if (enableDownScale)
+            {
+                downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
+                DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
+            }
+            else
+            {
+                downScaleMat = grayMat;
+                DOWNSCALE_RATIO = 1.0f;
+            }
+
+            float width = downScaleMat.width();
+            float height = downScaleMat.height();
+
+            texture = new Texture2D((int)width, (int)height, TextureFormat.RGB24, false);
+            previewQuad.GetComponent<MeshRenderer>().material.mainTexture = texture;
+            previewQuad.transform.localScale = new Vector3(0.2f * width / height, 0.2f, 1);
+            previewQuad.SetActive(displayCameraPreview);
+
+
+            //Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
+
+
+            DebugUtils.AddDebugStr(webCamTextureToMatHelper.outputColorFormat.ToString() + " " + webCamTextureToMatHelper.GetWidth() + " x " + webCamTextureToMatHelper.GetHeight() + " : " + webCamTextureToMatHelper.GetFPS());
+            if (enableDownScale)
+                DebugUtils.AddDebugStr("enableDownScale = true: " + DOWNSCALE_RATIO + " / " + width + " x " + height);
+
+
+            // create camera matrix and dist coeffs.
+            string loadDirectoryPath = Path.Combine(Application.persistentDataPath, "HoloLensArUcoCameraCalibrationExample");
+            string calibratonDirectoryName = "camera_parameters" + rawFrameWidth + "x" + rawFrameWidth;
+            string loadCalibratonFileDirectoryPath = Path.Combine(loadDirectoryPath, calibratonDirectoryName);
+            string loadPath = Path.Combine(loadCalibratonFileDirectoryPath, calibratonDirectoryName + ".xml");
+            if (useStoredCameraParameters && File.Exists(loadPath))
+            {
+                // If there is a camera parameters stored by HoloLensArUcoCameraCalibrationExample, use it
+
+                CameraParameters param;
+                XmlSerializer serializer = new XmlSerializer(typeof(CameraParameters));
+                using (var stream = new FileStream(loadPath, FileMode.Open))
+                {
+                    param = (CameraParameters)serializer.Deserialize(stream);
+                }
+
+                double fx = param.camera_matrix[0];
+                double fy = param.camera_matrix[4];
+                double cx = param.camera_matrix[2];
+                double cy = param.camera_matrix[5];
+
+                camMatrix = CreateCameraMatrix(fx, fy, cx / DOWNSCALE_RATIO, cy / DOWNSCALE_RATIO);
+                distCoeffs = new MatOfDouble(param.GetDistortionCoefficients());
+
+                Debug.Log("Loaded CameraParameters from a stored XML file.");
+                Debug.Log("loadPath: " + loadPath);
+
+                DebugUtils.AddDebugStr("Loaded CameraParameters from a stored XML file.");
+                DebugUtils.AddDebugStr("loadPath: " + loadPath);
+            }
+            else
+            {
+                if (useStoredCameraParameters && !File.Exists(loadPath))
+                {
+                    DebugUtils.AddDebugStr("The CameraParameters XML file (" + loadPath + ") does not exist.");
+                }
+
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+
+                CameraIntrinsics cameraIntrinsics = webCamTextureToMatHelper.GetCameraIntrinsics();
+
+                camMatrix = CreateCameraMatrix(cameraIntrinsics.FocalLengthX, cameraIntrinsics.FocalLengthY, cameraIntrinsics.PrincipalPointX / DOWNSCALE_RATIO, cameraIntrinsics.PrincipalPointY / DOWNSCALE_RATIO);
+                distCoeffs = new MatOfDouble(cameraIntrinsics.RadialDistK1, cameraIntrinsics.RadialDistK2, cameraIntrinsics.RadialDistK3, cameraIntrinsics.TangentialDistP1, cameraIntrinsics.TangentialDistP2);
+
+                Debug.Log("Created CameraParameters from VideoMediaFrame.CameraIntrinsics on device.");
+
+                DebugUtils.AddDebugStr("Created CameraParameters from VideoMediaFrame.CameraIntrinsics on device.");
+
+#else
+
+                // The camera matrix value of Hololens camera 896x504 size.
+                // For details on the camera matrix, please refer to this page. (http://docs.opencv.org/2.4/modules/calib3d/doc/camera_calibration_and_3d_reconstruction.html)
+                // These values ​​are unique to my device, obtained from the "Windows.Media.Devices.Core.CameraIntrinsics" class. (https://docs.microsoft.com/en-us/uwp/api/windows.media.devices.core.cameraintrinsics)
+                // Can get these values by using this helper script. (https://github.com/EnoxSoftware/HoloLensWithOpenCVForUnityExample/tree/master/Assets/HololensCameraIntrinsicsChecker/CameraIntrinsicsCheckerHelper)
+                double fx = 1035.149;//focal length x.
+                double fy = 1034.633;//focal length y.
+                double cx = 404.9134;//principal point x.
+                double cy = 236.2834;//principal point y.
+                double distCoeffs1 = 0.2036923;//radial distortion coefficient k1.
+                double distCoeffs2 = -0.2035773;//radial distortion coefficient k2.
+                double distCoeffs3 = 0.0;//tangential distortion coefficient p1.
+                double distCoeffs4 = 0.0;//tangential distortion coefficient p2.
+                double distCoeffs5 = -0.2388065;//radial distortion coefficient k3.
+
+                camMatrix = CreateCameraMatrix(fx, fy, cx / DOWNSCALE_RATIO, cy / DOWNSCALE_RATIO);
+                distCoeffs = new MatOfDouble(distCoeffs1, distCoeffs2, distCoeffs3, distCoeffs4, distCoeffs5);
+
+                Debug.Log("Created a dummy CameraParameters (896x504).");
+
+                DebugUtils.AddDebugStr("Created a dummy CameraParameters (896x504).");
+#endif
+            }
+
+            Debug.Log("camMatrix " + camMatrix.dump());
+            Debug.Log("distCoeffs " + distCoeffs.dump());
+
+            //DebugUtils.AddDebugStr("camMatrix " + camMatrix.dump());
+            //DebugUtils.AddDebugStr("distCoeffs " + distCoeffs.dump());
+
+
+            //Calibration camera
+            Size imageSize = new Size(width, height);
+            double apertureWidth = 0;
+            double apertureHeight = 0;
+            double[] fovx = new double[1];
+            double[] fovy = new double[1];
+            double[] focalLength = new double[1];
+            Point principalPoint = new Point(0, 0);
+            double[] aspectratio = new double[1];
+
+            Calib3d.calibrationMatrixValues(camMatrix, imageSize, apertureWidth, apertureHeight, fovx, fovy, focalLength, principalPoint, aspectratio);
+
+            Debug.Log("imageSize " + imageSize.ToString());
+            Debug.Log("apertureWidth " + apertureWidth);
+            Debug.Log("apertureHeight " + apertureHeight);
+            Debug.Log("fovx " + fovx[0]);
+            Debug.Log("fovy " + fovy[0]);
+            Debug.Log("focalLength " + focalLength[0]);
+            Debug.Log("principalPoint " + principalPoint.ToString());
+            Debug.Log("aspectratio " + aspectratio[0]);
+
+            // Display objects near the camera.
+            arCamera.nearClipPlane = 0.01f;
+
+            ids = new Mat();
+            corners = new List<Mat>();
+            rejectedCorners = new List<Mat>();
+            rvecs = new Mat();
+            tvecs = new Mat();
+            rotMat = new Mat(3, 3, CvType.CV_64FC1);
+
+
+            transformationM = new Matrix4x4();
+
+            invertYM = Matrix4x4.TRS(Vector3.zero, Quaternion.identity, new Vector3(1, -1, 1));
+            Debug.Log("invertYM " + invertYM.ToString());
+
+            invertZM = Matrix4x4.TRS(Vector3.zero, Quaternion.identity, new Vector3(1, 1, -1));
+            Debug.Log("invertZM " + invertZM.ToString());
+
+            detectorParams = DetectorParameters.create();
+            dictionary = Aruco.getPredefinedDictionary(dictionaryId);
+
+
+            //If WebCamera is frontFaceing, flip Mat.
+            webCamTextureToMatHelper.flipHorizontal = webCamTextureToMatHelper.IsFrontFacing();
+
+            rgbMat4preview = new Mat();
+        }
+
+        /// <summary>
+        /// Raises the web cam texture to mat helper disposed event.
+        /// </summary>
+        public void OnWebCamTextureToMatHelperDisposed()
+        {
+            Debug.Log("OnWebCamTextureToMatHelperDisposed");
+
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+
+            while (isDetectingInFrameArrivedThread)
+            {
+                //Wait detecting stop
+            }
+
+            lock (ExecuteOnMainThread)
+            {
+                ExecuteOnMainThread.Clear();
+            }
+
+#else
+
+            StopThread();
+            lock (ExecuteOnMainThread)
+            {
+                ExecuteOnMainThread.Clear();
+            }
+            isDetecting = false;
+
+#endif
+
+            hasUpdatedARTransformMatrix = false;
+
+            if (ids != null)
+                ids.Dispose();
+            foreach (var item in corners)
+            {
+                item.Dispose();
+            }
+            corners.Clear();
+            foreach (var item in rejectedCorners)
+            {
+                item.Dispose();
+            }
+            rejectedCorners.Clear();
+            if (rvecs != null)
+                rvecs.Dispose();
+            if (tvecs != null)
+                tvecs.Dispose();
+            if (rotMat != null)
+                rotMat.Dispose();
+
+            if (rgbMat4preview != null)
+                rgbMat4preview.Dispose();
+
+            if (debugStr != null)
+            {
+                debugStr.text = string.Empty;
+            }
+            DebugUtils.ClearDebugStr();
+        }
+
+        /// <summary>
+        /// Raises the web cam texture to mat helper error occurred event.
+        /// </summary>
+        /// <param name="errorCode">Error code.</param>
+        public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
+        {
+            Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
+        }
+
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+        public void OnFrameMatAcquired(Mat grayMat, Matrix4x4 projectionMatrix, Matrix4x4 cameraToWorldMatrix, CameraIntrinsics cameraIntrinsics)
+        {
+            isDetectingInFrameArrivedThread = true;
+
+            DebugUtils.VideoTick();
+
+            Mat downScaleMat = null;
+            float DOWNSCALE_RATIO;
+            if (enableDownScale)
+            {
+                downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
+                DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
+            }
+            else
+            {
+                downScaleMat = grayMat;
+                DOWNSCALE_RATIO = 1.0f;
+            }
+
+            Mat camMatrix = null;
+            MatOfDouble distCoeffs = null;
+            if (useStoredCameraParameters)
+            {
+                camMatrix = this.camMatrix;
+                distCoeffs = this.distCoeffs;
+            }
+            else
+            {
+                camMatrix = CreateCameraMatrix(cameraIntrinsics.FocalLengthX, cameraIntrinsics.FocalLengthY, cameraIntrinsics.PrincipalPointX / DOWNSCALE_RATIO, cameraIntrinsics.PrincipalPointY / DOWNSCALE_RATIO);
+                distCoeffs = new MatOfDouble(cameraIntrinsics.RadialDistK1, cameraIntrinsics.RadialDistK2, cameraIntrinsics.RadialDistK3, cameraIntrinsics.TangentialDistP1, cameraIntrinsics.TangentialDistP2);
+            }
+
+            if (enableDetection)
+            {
+                // Detect markers and estimate Pose
+
+                // undistort image.
+                Calib3d.undistort(downScaleMat, downScaleMat, camMatrix, distCoeffs);
+                // detect markers.
+                Aruco.detectMarkers(downScaleMat, dictionary, corners, ids, detectorParams, rejectedCorners);
+
+                if (applyEstimationPose && ids.total() > 0)
+                {
+                    Aruco.estimatePoseSingleMarkers(corners, markerLength, camMatrix, distCoeffs, rvecs, tvecs);
+
+                    for (int i = 0; i < ids.total(); i++)
+                    {
+                        //This example can display ARObject on only first detected marker.
+                        if (i == 0)
+                        {
+                            // Convert to unity pose data.
+                            double[] rvecArr = new double[3];
+                            rvecs.get(0, 0, rvecArr);
+                            double[] tvecArr = new double[3];
+                            tvecs.get(0, 0, tvecArr);
+                            tvecArr[2] /= DOWNSCALE_RATIO;
+                            PoseData poseData = ARUtils.ConvertRvecTvecToPoseData(rvecArr, tvecArr);
+
+                            // Create transform matrix.
+                            transformationM = Matrix4x4.TRS(poseData.pos, poseData.rot, Vector3.one);
+
+                            lock (sync)
+                            {
+                                // Right-handed coordinates system (OpenCV) to left-handed one (Unity)
+                                // https://stackoverflow.com/questions/30234945/change-handedness-of-a-row-major-4x4-transformation-matrix
+                                ARM = invertYM * transformationM * invertYM;
+
+                                // Apply Y-axis and Z-axis refletion matrix. (Adjust the posture of the AR object)
+                                ARM = ARM * invertYM * invertZM;
+                            }
+
+                            hasUpdatedARTransformMatrix = true;
+
+                            break;
+                        }
+                    }
+                }
+            }
+
+            Mat rgbMat4preview = null;
+            if (displayCameraPreview)
+            {
+                rgbMat4preview = new Mat();
+                Imgproc.cvtColor(downScaleMat, rgbMat4preview, Imgproc.COLOR_GRAY2RGB);
+
+                if (ids.total() > 0)
+                {
+                    Aruco.drawDetectedMarkers(rgbMat4preview, corners, ids, new Scalar(0, 255, 0));
+
+                    if (applyEstimationPose)
+                    {
+                        for (int i = 0; i < ids.total(); i++)
+                        {
+                            using (Mat rvec = new Mat(rvecs, new OpenCVForUnity.CoreModule.Rect(0, i, 1, 1)))
+                            using (Mat tvec = new Mat(tvecs, new OpenCVForUnity.CoreModule.Rect(0, i, 1, 1)))
+                            {
+                                // In this example we are processing with RGB color image, so Axis-color correspondences are X: blue, Y: green, Z: red. (Usually X: red, Y: green, Z: blue)
+                                Calib3d.drawFrameAxes(rgbMat4preview, camMatrix, distCoeffs, rvec, tvec, markerLength * 0.5f);
+                            }
+                        }
+                    }
+                }
+            }
+
+            if (!useStoredCameraParameters)
+            {
+                camMatrix.Dispose();
+                distCoeffs.Dispose();
+            }
+
+            DebugUtils.TrackTick();
+
+            Enqueue(() =>
+            {
+                if (!webCamTextureToMatHelper.IsPlaying()) return;
+
+                if (displayCameraPreview && rgbMat4preview != null)
+                {
+                    Utils.matToTexture2D(rgbMat4preview, texture);
+                    rgbMat4preview.Dispose();
+                }
+
+                if (applyEstimationPose)
+                {
+                    if (hasUpdatedARTransformMatrix)
+                    {
+                        hasUpdatedARTransformMatrix = false;
+
+                        lock (sync)
+                        {
+                            Matrix4x4 localToWorldMatrix = cameraToWorldMatrix * invertZM;
+                            ARM = localToWorldMatrix * ARM;
+
+                            if (enableLerpFilter)
+                            {
+                                arGameObject.SetMatrix4x4(ARM);
+                            }
+                            else
+                            {
+                                ARUtils.SetTransformFromMatrix(arGameObject.transform, ref ARM);
+                            }
+                        }
+                    }
+                }
+
+                grayMat.Dispose();
+            });
+
+            isDetectingInFrameArrivedThread = false;
+        }
+
+        private void Update()
+        {
+            lock (ExecuteOnMainThread)
+            {
+                while (ExecuteOnMainThread.Count > 0)
+                {
+                    ExecuteOnMainThread.Dequeue().Invoke();
+                }
+            }
+        }
+
+        private void Enqueue(Action action)
+        {
+            lock (ExecuteOnMainThread)
+            {
+                ExecuteOnMainThread.Enqueue(action);
+            }
+        }
+
+#else
+
+        // Update is called once per frame
+        void Update()
+        {
+            lock (ExecuteOnMainThread)
+            {
+                while (ExecuteOnMainThread.Count > 0)
+                {
+                    ExecuteOnMainThread.Dequeue().Invoke();
+                }
+            }
+
+            if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
+            {
+                DebugUtils.VideoTick();
+
+                if (enableDetection && !isDetecting)
+                {
+                    isDetecting = true;
+
+                    Mat grayMat = webCamTextureToMatHelper.GetMat();
+
+                    if (enableDownScale)
+                    {
+                        downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
+                        DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
+                    }
+                    else
+                    {
+                        downScaleMat = grayMat;
+                        DOWNSCALE_RATIO = 1.0f;
+                    }
+
+                    StartThread(ThreadWorker);
+                }
+            }
+        }
+
+        private void StartThread(Action action)
+        {
+#if WINDOWS_UWP || (!UNITY_WSA_10_0 && (NET_4_6 || NET_STANDARD_2_0))
+            System.Threading.Tasks.Task.Run(() => action());
+#else
+            ThreadPool.QueueUserWorkItem(_ => action());
+#endif
+        }
+
+        private void StopThread()
+        {
+            if (!isThreadRunning)
+                return;
+
+            while (isThreadRunning)
+            {
+                //Wait threading stop
+            }
+        }
+
+        private void ThreadWorker()
+        {
+            isThreadRunning = true;
+
+            DetectARUcoMarker();
+
+            lock (ExecuteOnMainThread)
+            {
+                if (ExecuteOnMainThread.Count == 0)
+                {
+                    ExecuteOnMainThread.Enqueue(() =>
+                    {
+                        OnDetectionDone();
+                    });
+                }
+            }
+
+            isThreadRunning = false;
+        }
+
+        private void DetectARUcoMarker()
+        {
+            // Detect markers and estimate Pose
+
+            // undistort image.
+            Calib3d.undistort(downScaleMat, downScaleMat, camMatrix, distCoeffs);
+            // detect markers.
+            Aruco.detectMarkers(downScaleMat, dictionary, corners, ids, detectorParams, rejectedCorners);
+
+            if (applyEstimationPose && ids.total() > 0)
+            {
+                Aruco.estimatePoseSingleMarkers(corners, markerLength, camMatrix, distCoeffs, rvecs, tvecs);
+
+                for (int i = 0; i < ids.total(); i++)
+                {
+                    //This example can display ARObject on only first detected marker.
+                    if (i == 0)
+                    {
+                        // Convert to unity pose data.
+                        double[] rvecArr = new double[3];
+                        rvecs.get(0, 0, rvecArr);
+                        double[] tvecArr = new double[3];
+                        tvecs.get(0, 0, tvecArr);
+                        tvecArr[2] /= DOWNSCALE_RATIO;
+                        PoseData poseData = ARUtils.ConvertRvecTvecToPoseData(rvecArr, tvecArr);
+
+                        // Create transform matrix.
+                        transformationM = Matrix4x4.TRS(poseData.pos, poseData.rot, Vector3.one);
+
+                        // Right-handed coordinates system (OpenCV) to left-handed one (Unity)
+                        // https://stackoverflow.com/questions/30234945/change-handedness-of-a-row-major-4x4-transformation-matrix
+                        ARM = invertYM * transformationM * invertYM;
+
+                        // Apply Y-axis and Z-axis refletion matrix. (Adjust the posture of the AR object)
+                        ARM = ARM * invertYM * invertZM;
+
+                        hasUpdatedARTransformMatrix = true;
+
+                        break;
+                    }
+                }
+            }
+        }
+
+        private void OnDetectionDone()
+        {
+            DebugUtils.TrackTick();
+
+            if (displayCameraPreview)
+            {
+                Imgproc.cvtColor(downScaleMat, rgbMat4preview, Imgproc.COLOR_GRAY2RGB);
+
+                if (ids.total() > 0)
+                {
+                    Aruco.drawDetectedMarkers(rgbMat4preview, corners, ids, new Scalar(0, 255, 0));
+
+                    if (applyEstimationPose)
+                    {
+                        for (int i = 0; i < ids.total(); i++)
+                        {
+                            using (Mat rvec = new Mat(rvecs, new OpenCVForUnity.CoreModule.Rect(0, i, 1, 1)))
+                            using (Mat tvec = new Mat(tvecs, new OpenCVForUnity.CoreModule.Rect(0, i, 1, 1)))
+                            {
+                                // In this example we are processing with RGB color image, so Axis-color correspondences are X: blue, Y: green, Z: red. (Usually X: red, Y: green, Z: blue)
+                                Calib3d.drawFrameAxes(rgbMat4preview, camMatrix, distCoeffs, rvec, tvec, markerLength * 0.5f);
+                            }
+                        }
+                    }
+                }
+
+                Utils.matToTexture2D(rgbMat4preview, texture);
+            }
+
+            if (applyEstimationPose)
+            {
+                if (hasUpdatedARTransformMatrix)
+                {
+                    hasUpdatedARTransformMatrix = false;
+
+                    Matrix4x4 localToWorldMatrix = arCamera.cameraToWorldMatrix * invertZM;
+                    ARM = localToWorldMatrix * ARM;
+
+                    if (enableLerpFilter)
+                    {
+                        arGameObject.SetMatrix4x4(ARM);
+                    }
+                    else
+                    {
+                        ARUtils.SetTransformFromMatrix(arGameObject.transform, ref ARM);
+                    }
+                }
+            }
+
+            isDetecting = false;
+        }
+#endif
+
+        private Mat CreateCameraMatrix(double fx, double fy, double cx, double cy)
+        {
+            Mat camMatrix = new Mat(3, 3, CvType.CV_64FC1);
+            camMatrix.put(0, 0, fx);
+            camMatrix.put(0, 1, 0);
+            camMatrix.put(0, 2, cx);
+            camMatrix.put(1, 0, 0);
+            camMatrix.put(1, 1, fy);
+            camMatrix.put(1, 2, cy);
+            camMatrix.put(2, 0, 0);
+            camMatrix.put(2, 1, 0);
+            camMatrix.put(2, 2, 1.0f);
+
+            return camMatrix;
+        }
+
+        void LateUpdate()
+        {
+            DebugUtils.RenderTick();
+            float renderDeltaTime = DebugUtils.GetRenderDeltaTime();
+            float videoDeltaTime = DebugUtils.GetVideoDeltaTime();
+            float trackDeltaTime = DebugUtils.GetTrackDeltaTime();
+
+            if (renderFPS != null)
+            {
+                renderFPS.text = string.Format("Render: {0:0.0} ms ({1:0.} fps)", renderDeltaTime, 1000.0f / renderDeltaTime);
+            }
+            if (videoFPS != null)
+            {
+                videoFPS.text = string.Format("Video: {0:0.0} ms ({1:0.} fps)", videoDeltaTime, 1000.0f / videoDeltaTime);
+            }
+            if (trackFPS != null)
+            {
+                trackFPS.text = string.Format("Track:   {0:0.0} ms ({1:0.} fps)", trackDeltaTime, 1000.0f / trackDeltaTime);
+            }
+            if (debugStr != null)
+            {
+                if (DebugUtils.GetDebugStrLength() > 0)
+                {
+                    if (debugStr.preferredHeight >= debugStr.rectTransform.rect.height)
+                        debugStr.text = string.Empty;
+
+                    debugStr.text += DebugUtils.GetDebugStr();
+                    DebugUtils.ClearDebugStr();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Raises the destroy event.
+        /// </summary>
+        void OnDestroy()
+        {
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+            webCamTextureToMatHelper.frameMatAcquired -= OnFrameMatAcquired;
+#endif
+            webCamTextureToMatHelper.Dispose();
+            imageOptimizationHelper.Dispose();
+        }
+
+        /// <summary>
+        /// Raises the back button click event.
+        /// </summary>
+        public void OnBackButtonClick()
+        {
+            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
+        }
+
+        /// <summary>
+        /// Raises the play button click event.
+        /// </summary>
+        public void OnPlayButtonClick()
+        {
+            webCamTextureToMatHelper.Play();
+        }
+
+        /// <summary>
+        /// Raises the pause button click event.
+        /// </summary>
+        public void OnPauseButtonClick()
+        {
+            webCamTextureToMatHelper.Pause();
+        }
+
+        /// <summary>
+        /// Raises the stop button click event.
+        /// </summary>
+        public void OnStopButtonClick()
+        {
+            webCamTextureToMatHelper.Stop();
+        }
+
+        /// <summary>
+        /// Raises the change camera button click event.
+        /// </summary>
+        public void OnChangeCameraButtonClick()
+        {
+            webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.IsFrontFacing();
+        }
+
+        /// <summary>
+        /// Raises the display camera preview toggle value changed event.
+        /// </summary>
+        public void OnDisplayCamreaPreviewToggleValueChanged()
+        {
+            displayCameraPreview = displayCameraPreviewToggle.isOn;
+
+            previewQuad.SetActive(displayCameraPreview);
+        }
+
+        /// <summary>
+        /// Raises the use stored camera parameters toggle value changed event.
+        /// </summary>
+        public void OnUseStoredCameraParametersToggleValueChanged()
+        {
+            useStoredCameraParameters = useStoredCameraParametersToggle.isOn;
+
+            if (webCamTextureToMatHelper != null && webCamTextureToMatHelper.IsInitialized())
+            {
+                webCamTextureToMatHelper.Initialize();
+            }
+        }
+
+        /// <summary>
+        /// Raises the enable downscale toggle value changed event.
+        /// </summary>
+        public void OnEnableDownScaleToggleValueChanged()
+        {
+            enableDownScale = enableDownScaleToggle.isOn;
+
+            if (webCamTextureToMatHelper != null && webCamTextureToMatHelper.IsInitialized())
+            {
+                webCamTextureToMatHelper.Initialize();
+            }
+        }
+
+        /// <summary>
+        /// Raises the enable lerp filter toggle value changed event.
+        /// </summary>
+        public void OnEnableLerpFilterToggleValueChanged()
+        {
+            enableLerpFilter = enableLerpFilterToggle.isOn;
+        }
+    }
 }
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoExample.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoExample.cs.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoExample.cs.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoExample.cs.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoExample.unity b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoExample.unity
similarity index 93%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoExample.unity
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoExample.unity
index d7ea185..0af7b38 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoExample.unity
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoExample.unity.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoExample.unity.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/HoloLensArUcoExample.unity.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/HLArUcoExample.unity.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/Materials.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/Materials.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/Materials.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/Materials.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/Materials/ArUcoMaterial.mat b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/Materials/ArUcoMaterial.mat
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/Materials/ArUcoMaterial.mat
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/Materials/ArUcoMaterial.mat
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/Materials/ArUcoMaterial.mat.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/Materials/ArUcoMaterial.mat.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensArUcoExample/Materials/ArUcoMaterial.mat.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLArUcoExample/Materials/ArUcoMaterial.mat.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraIntrinsicsChecker.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker.meta
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similarity index 93%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker/HoloLensCameraIntrinsicsChecker.unity
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraIntrinsicsChecker/HLCameraIntrinsicsChecker.unity
index 33283e1..7f4a0b6 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker/HoloLensCameraIntrinsicsChecker.unity
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@@ -628,7 +644,7 @@ GameObject:
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@@ -862,6 +879,7 @@ MonoBehaviour:
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@@ -950,7 +968,7 @@ MonoBehaviour:
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-  maintainScale: 1
+  maintainScaleOnInitialization: 1
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@@ -977,7 +995,7 @@ MonoBehaviour:
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-  trackedHandness: 3
+  trackedHandedness: 3
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-  m_Script: {fileID: 708705254, guid: f5f67c52d1564df4a8936ccd202a3bd8, type: 3}
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@@ -1142,6 +1162,7 @@ MonoBehaviour:
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-  m_Script: {fileID: 1679637790, guid: f5f67c52d1564df4a8936ccd202a3bd8, type: 3}
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@@ -1220,7 +1241,7 @@ MonoBehaviour:
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   m_Enabled: 1
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-  m_Script: {fileID: 1392445389, guid: f5f67c52d1564df4a8936ccd202a3bd8, type: 3}
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     m_DisabledSprite: {fileID: 0}
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     m_HighlightedTrigger: Highlighted
     m_PressedTrigger: Pressed
+    m_SelectedTrigger: Highlighted
     m_DisabledTrigger: Disabled
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker/HoloLensCameraIntrinsicsChecker.unity.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraIntrinsicsChecker/HLCameraIntrinsicsChecker.unity.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker/HoloLensCameraIntrinsicsChecker.unity.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraIntrinsicsChecker/HLCameraIntrinsicsChecker.unity.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker/CameraIntrinsicsCheckerHelper.cs b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraIntrinsicsChecker/HLCameraIntrinsicsCheckerHelper.cs
similarity index 64%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker/CameraIntrinsicsCheckerHelper.cs
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraIntrinsicsChecker/HLCameraIntrinsicsCheckerHelper.cs
index c939d2e..4c65128 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker/CameraIntrinsicsCheckerHelper.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraIntrinsicsChecker/HLCameraIntrinsicsCheckerHelper.cs
@@ -1,278 +1,358 @@
-using UnityEngine;
-using UnityEngine.UI;
-using System;
-using System.Linq;
-using System.Collections.Generic;
-using UnityEngine.SceneManagement;
-
-#if WINDOWS_UWP
-using System.Threading.Tasks;
-using Windows.Devices.Enumeration;
-using Windows.Foundation;
-using Windows.Media.Capture;
-using Windows.Media.Capture.Frames;
-using Windows.Media.MediaProperties;
-using Windows.Media.Devices.Core;
-#endif
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    /// <summary>
-    /// Hololens Camera Intrinsics Checker Helper
-    /// An example for displaying camera resolutions and camera Intrinsics available on the hololens device.
-    /// </summary>
-    public class CameraIntrinsicsCheckerHelper : MonoBehaviour
-    {
-        public Text ResultText;
-
-#if WINDOWS_UWP
-        CameraIntrinsicsChecker cameraIntrinsicsChecker;
-
-        readonly static Queue<Action> ExecuteOnMainThread = new Queue<Action>();
-
-        // Use this for initialization
-        void Start()
-        {
-            CameraIntrinsicsChecker.CreateAync(OnCameraIntrinsicsCheckerInstanceCreated);
-        }
-
-        void OnDestroy()
-        {
-            if (cameraIntrinsicsChecker != null)
-                cameraIntrinsicsChecker.Dispose();
-        }
-
-        private void OnCameraIntrinsicsCheckerInstanceCreated(CameraIntrinsicsChecker checker)
-        {
-            if (checker == null)
-            {
-                Debug.LogError("Creating the CameraIntrinsicsChecker object failed.");
-                return;
-            }
-
-            this.cameraIntrinsicsChecker = checker;
-
-            checker.GetCameraIntrinsicsAync(OnCameraIntrinsicsGot);
-        }
-
-        private void OnCameraIntrinsicsGot(CameraIntrinsics cameraIntrinsics, VideoEncodingProperties property)
-        {
-            if (cameraIntrinsics == null)
-            {
-                Debug.LogError("Getting the CameraIntrinsics object failed.");
-                return;
-            }
-
-            double calculatedFrameRate = (double)property.FrameRate.Numerator / (double)property.FrameRate.Denominator;
-
-            String result = "\n" + "=============================================";
-            result += "\n" + "==== Size: " + property.Width + "x" + property.Height + " FrameRate: " + (int)Math.Round(calculatedFrameRate) + "====";
-            result += "\n" + "FocalLength: " + cameraIntrinsics.FocalLength;
-            result += "\n" + "ImageHeight: " + cameraIntrinsics.ImageHeight;
-            result += "\n" + "ImageWidth: " + cameraIntrinsics.ImageWidth;
-            result += "\n" + "PrincipalPoint: " + cameraIntrinsics.PrincipalPoint;
-            result += "\n" + "RadialDistortion: " + cameraIntrinsics.RadialDistortion;
-            result += "\n" + "TangentialDistortion: " + cameraIntrinsics.TangentialDistortion;
-            result += "\n" + "=============================================";
-
-            Debug.Log(result);
-
-            Enqueue(() =>
-            {
-                ResultText.text += result;
-            });
-
-        }
-        private void Update()
-        {
-            lock (ExecuteOnMainThread)
-            {
-                while (ExecuteOnMainThread.Count > 0)
-                {
-                    ExecuteOnMainThread.Dequeue().Invoke();
-                }
-            }
-        }
-
-        private void Enqueue(Action action)
-        {
-            lock (ExecuteOnMainThread)
-            {
-                ExecuteOnMainThread.Enqueue(action);
-            }
-        }
-#endif
-
-        /// <summary>
-        /// Raises the back button click event.
-        /// </summary>
-        public void OnBackButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
-        }
-    }
-
-#if WINDOWS_UWP
-    public class CameraIntrinsicsChecker
-    {
-        public delegate void OnVideoCaptureResourceCreatedCallback(CameraIntrinsicsChecker chakerObject);
-
-        public delegate void OnCameraIntrinsicsGotCallback(CameraIntrinsics cameraIntrinsics, VideoEncodingProperties property);
-
-        public bool IsStreaming
-        {
-            get
-            {
-                return _frameReader != null;
-            }
-        }
-
-        static readonly MediaStreamType STREAM_TYPE = MediaStreamType.VideoRecord;
-
-        MediaFrameSourceGroup _frameSourceGroup;
-        MediaFrameSourceInfo _frameSourceInfo;
-        DeviceInformation _deviceInfo;
-        MediaCapture _mediaCapture;
-        MediaFrameReader _frameReader;
-
-        CameraIntrinsicsChecker(MediaFrameSourceGroup frameSourceGroup, MediaFrameSourceInfo frameSourceInfo, DeviceInformation deviceInfo)
-        {
-            _frameSourceGroup = frameSourceGroup;
-            _frameSourceInfo = frameSourceInfo;
-            _deviceInfo = deviceInfo;
-        }
-
-        public static async void CreateAync(OnVideoCaptureResourceCreatedCallback onCreatedCallback)
-        {
-            var allFrameSourceGroups = await MediaFrameSourceGroup.FindAllAsync();                                       //Returns IReadOnlyList<MediaFrameSourceGroup>
-            var candidateFrameSourceGroups = allFrameSourceGroups.Where(group => group.SourceInfos.Any(IsColorVideo));   //Returns IEnumerable<MediaFrameSourceGroup>
-            var selectedFrameSourceGroup = candidateFrameSourceGroups.FirstOrDefault();                                  //Returns a single MediaFrameSourceGroup
-
-            if (selectedFrameSourceGroup == null)
-            {
-                onCreatedCallback?.Invoke(null);
-                return;
-            }
-
-            var selectedFrameSourceInfo = selectedFrameSourceGroup.SourceInfos.FirstOrDefault(); //Returns a MediaFrameSourceInfo
-
-            if (selectedFrameSourceInfo == null)
-            {
-                onCreatedCallback?.Invoke(null);
-                return;
-            }
-
-            var devices = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);   //Returns DeviceCollection
-            var deviceInformation = devices.FirstOrDefault();                               //Returns a single DeviceInformation
-
-            if (deviceInformation == null)
-            {
-                onCreatedCallback(null);
-                return;
-            }
-
-            var cameraIntrinsicsChecker = new CameraIntrinsicsChecker(selectedFrameSourceGroup, selectedFrameSourceInfo, deviceInformation);
-            await cameraIntrinsicsChecker.CreateMediaCaptureAsync();
-            onCreatedCallback?.Invoke(cameraIntrinsicsChecker);
-        }
-
-        public async void GetCameraIntrinsicsAync(OnCameraIntrinsicsGotCallback onGotCallback)
-        {
-            Camera​Intrinsics cameraIntrinsics = null;
-
-            // Start video
-            var mediaFrameSource = _mediaCapture.FrameSources[_frameSourceInfo.Id]; //Returns a MediaFrameSource
-
-            if (mediaFrameSource == null)
-            {
-                onGotCallback?.Invoke(null, null);
-                return;
-            }
-
-            var pixelFormat = MediaEncodingSubtypes.Bgra8;
-            _frameReader = await _mediaCapture.CreateFrameReaderAsync(mediaFrameSource, pixelFormat);
-
-            await _frameReader.StartAsync();
-
-            IEnumerable<VideoEncodingProperties> allProperties = _mediaCapture.VideoDeviceController.GetAvailableMediaStreamProperties(STREAM_TYPE).Select(x => x as VideoEncodingProperties);
-
-            foreach (var property in allProperties)
-            {
-                await _mediaCapture.VideoDeviceController.SetMediaStreamPropertiesAsync(STREAM_TYPE, property);
-
-                // Get CameraIntrinsics
-                var taskCompletionSource = new TaskCompletionSource<bool>();
-
-                TypedEventHandler<MediaFrameReader, MediaFrameArrivedEventArgs> handler = null;
-                handler = (MediaFrameReader sender, MediaFrameArrivedEventArgs args) =>
-                {
-                    using (var frameReference = _frameReader.TryAcquireLatestFrame()) //frame: MediaFrameReference
-                    {
-                        if (frameReference != null)
-                        {
-                            cameraIntrinsics = frameReference.VideoMediaFrame.CameraIntrinsics;
-
-                            taskCompletionSource.SetResult(true);
-                        }
-                        else
-                        {
-                            taskCompletionSource.SetResult(false);
-                        }
-                    }
-                    _frameReader.FrameArrived -= handler;
-                };
-                _frameReader.FrameArrived += handler;
-
-                var result = await taskCompletionSource.Task;
-
-                if (result == false)
-                {
-                    onGotCallback?.Invoke(null, null);
-                    return;
-                }
-
-                onGotCallback?.Invoke(cameraIntrinsics, property);
-            }
-
-            // Stop video
-            await _frameReader.StopAsync();
-            _frameReader.Dispose();
-            _frameReader = null;
-        }
-
-        public void Dispose()
-        {
-            if (IsStreaming)
-            {
-                throw new Exception("Please make sure StopVideoModeAsync() is called before displosing the VideoCapture object.");
-            }
-
-            _mediaCapture?.Dispose();
-        }
-
-        async Task CreateMediaCaptureAsync()
-        {
-            if (_mediaCapture != null)
-            {
-                throw new Exception("The MediaCapture object has already been created.");
-            }
-
-            _mediaCapture = new MediaCapture();
-            await _mediaCapture.InitializeAsync(new MediaCaptureInitializationSettings()
-            {
-                VideoDeviceId = _deviceInfo.Id,
-                SourceGroup = _frameSourceGroup,
-                MemoryPreference = MediaCaptureMemoryPreference.Cpu,
-                StreamingCaptureMode = StreamingCaptureMode.Video
-            });
-            _mediaCapture.VideoDeviceController.Focus.TrySetAuto(true);
-        }
-
-        static bool IsColorVideo(MediaFrameSourceInfo sourceInfo)
-        {
-            return (sourceInfo.MediaStreamType == STREAM_TYPE &&
-                sourceInfo.SourceKind == MediaFrameSourceKind.Color);
-        }
-    }
-#endif
-}
+using UnityEngine;
+using UnityEngine.UI;
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using UnityEngine.SceneManagement;
+
+#if WINDOWS_UWP
+using System.Threading.Tasks;
+using Windows.Devices.Enumeration;
+using Windows.Foundation;
+using Windows.Media.Capture;
+using Windows.Media.Capture.Frames;
+using Windows.Media.MediaProperties;
+using Windows.Media.Devices.Core;
+#endif
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    /// <summary>
+    /// Hololens Camera Intrinsics Checker Helper
+    /// An example for displaying camera resolutions and camera Intrinsics available on the hololens device.
+    /// </summary>
+    public class HLCameraIntrinsicsCheckerHelper : MonoBehaviour
+    {
+        public Text ResultText;
+
+#if WINDOWS_UWP
+        CameraIntrinsicsChecker cameraIntrinsicsChecker;
+
+        readonly static Queue<Action> ExecuteOnMainThread = new Queue<Action>();
+
+        // Use this for initialization
+        void Start()
+        {
+            CameraIntrinsicsChecker.CreateAync(OnCameraIntrinsicsCheckerInstanceCreated);
+        }
+
+        void OnDestroy()
+        {
+            if (cameraIntrinsicsChecker != null)
+                cameraIntrinsicsChecker.Dispose();
+        }
+
+        private void OnCameraIntrinsicsCheckerInstanceCreated(CameraIntrinsicsChecker checker)
+        {
+            if (checker == null)
+            {
+                Debug.LogError("Creating the CameraIntrinsicsChecker object failed.");
+                return;
+            }
+
+            Enqueue(() =>
+            {
+                if (CameraIntrinsicsChecker._hololensDevice == 1)
+                {
+                    ResultText.text += "\n" + "Device: HoloLens 1";
+                }
+                else if (CameraIntrinsicsChecker._hololensDevice == 2)
+                {
+                    ResultText.text += "\n" + "Device: HoloLens 2";
+                }
+            });
+
+            this.cameraIntrinsicsChecker = checker;
+
+            checker.GetCameraIntrinsicsAync(OnCameraIntrinsicsGot);
+        }
+
+        private void OnCameraIntrinsicsGot(CameraIntrinsics cameraIntrinsics, VideoEncodingProperties property)
+        {
+            if (cameraIntrinsics == null)
+            {
+                Debug.LogError("Getting the CameraIntrinsics object failed.");
+                return;
+            }
+
+            double calculatedFrameRate = (double)property.FrameRate.Numerator / (double)property.FrameRate.Denominator;
+
+            String result = "\n" + "=============================================";
+            result += "\n" + "==== Size: " + property.Width + "x" + property.Height + " FrameRate: " + (int)Math.Round(calculatedFrameRate) + "====";
+            result += "\n" + "FocalLength: " + cameraIntrinsics.FocalLength;
+            result += "\n" + "ImageHeight: " + cameraIntrinsics.ImageHeight;
+            result += "\n" + "ImageWidth: " + cameraIntrinsics.ImageWidth;
+            result += "\n" + "PrincipalPoint: " + cameraIntrinsics.PrincipalPoint;
+            result += "\n" + "RadialDistortion: " + cameraIntrinsics.RadialDistortion;
+            result += "\n" + "TangentialDistortion: " + cameraIntrinsics.TangentialDistortion;
+            result += "\n" + "=============================================";
+
+            Debug.Log(result);
+
+            Enqueue(() =>
+            {
+                ResultText.text += result;
+            });
+
+        }
+        private void Update()
+        {
+            lock (ExecuteOnMainThread)
+            {
+                while (ExecuteOnMainThread.Count > 0)
+                {
+                    ExecuteOnMainThread.Dequeue().Invoke();
+                }
+            }
+        }
+
+        private void Enqueue(Action action)
+        {
+            lock (ExecuteOnMainThread)
+            {
+                ExecuteOnMainThread.Enqueue(action);
+            }
+        }
+#endif
+
+        /// <summary>
+        /// Raises the back button click event.
+        /// </summary>
+        public void OnBackButtonClick()
+        {
+            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
+        }
+    }
+
+#if WINDOWS_UWP
+
+    public class CameraIntrinsicsChecker
+    {
+        public delegate void OnVideoCaptureResourceCreatedCallback(CameraIntrinsicsChecker chakerObject);
+
+        public delegate void OnCameraIntrinsicsGotCallback(CameraIntrinsics cameraIntrinsics, VideoEncodingProperties property);
+
+        public bool IsStreaming
+        {
+            get
+            {
+                return _frameReader != null;
+            }
+        }
+
+        static public int _hololensDevice = 0;
+        static public MediaStreamType _mediaStreamType = MediaStreamType.VideoPreview;
+
+        MediaFrameSourceGroup _frameSourceGroup;
+        MediaFrameSourceInfo _frameSourceInfo;
+        DeviceInformation _deviceInfo;
+        MediaCapture _mediaCapture;
+        MediaFrameReader _frameReader;
+
+        CameraIntrinsicsChecker(MediaFrameSourceGroup frameSourceGroup, MediaFrameSourceInfo frameSourceInfo, DeviceInformation deviceInfo)
+        {
+            _frameSourceGroup = frameSourceGroup;
+            _frameSourceInfo = frameSourceInfo;
+            _deviceInfo = deviceInfo;
+        }
+
+        public static async void CreateAync(OnVideoCaptureResourceCreatedCallback onCreatedCallback)
+        {
+            // Whether it is running on HoloLens 1 or HoloLens 2.
+            // from https://github.com/qian256/HoloLensARToolKit/blob/bef36a89f191ab7d389d977c46639376069bbed6/HoloLensARToolKit/Assets/ARToolKitUWP/Scripts/ARUWPVideo.cs#L279
+            var allGroups = await MediaFrameSourceGroup.FindAllAsync();
+            int selectedGroupIndex = -1;
+            for (int i = 0; i < allGroups.Count; i++)
+            {
+                var group = allGroups[i];
+
+                if (group.DisplayName == "MN34150")
+                {
+                    _hololensDevice = 1;
+                    _mediaStreamType = MediaStreamType.VideoPreview;
+                    selectedGroupIndex = i;
+                    break;
+                }
+                else if (group.DisplayName == "QC Back Camera")
+                {
+                    _hololensDevice = 2;
+                    _mediaStreamType = MediaStreamType.VideoRecord;
+                    selectedGroupIndex = i;
+                    break;
+                }
+            }
+
+            MediaFrameSourceGroup selectedFrameSourceGroup = null;
+
+            if (selectedGroupIndex != -1)
+            {
+                selectedFrameSourceGroup = allGroups[selectedGroupIndex];
+            }
+            else
+            {
+                var candidateFrameSourceGroups = allGroups.Where(group => group.SourceInfos.Any(IsColorVideo));          //Returns IEnumerable<MediaFrameSourceGroup>
+                selectedFrameSourceGroup = candidateFrameSourceGroups.FirstOrDefault();                                         //Returns a single MediaFrameSourceGroup
+            }
+
+            if (selectedFrameSourceGroup == null)
+            {
+                onCreatedCallback?.Invoke(null);
+                return;
+            }
+
+            var selectedFrameSourceInfo = selectedFrameSourceGroup.SourceInfos.FirstOrDefault(); //Returns a MediaFrameSourceInfo
+
+
+            if (selectedFrameSourceInfo == null)
+            {
+                onCreatedCallback?.Invoke(null);
+                return;
+            }
+
+            var devices = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);   //Returns DeviceCollection
+            var deviceInformation = devices.FirstOrDefault();                               //Returns a single DeviceInformation
+
+            if (deviceInformation == null)
+            {
+                onCreatedCallback?.Invoke(null);
+                return;
+            }
+
+            var cameraIntrinsicsChecker = new CameraIntrinsicsChecker(selectedFrameSourceGroup, selectedFrameSourceInfo, deviceInformation);
+            await cameraIntrinsicsChecker.CreateMediaCaptureAsync();
+            onCreatedCallback?.Invoke(cameraIntrinsicsChecker);
+        }
+
+        public async void GetCameraIntrinsicsAync(OnCameraIntrinsicsGotCallback onGotCallback)
+        {
+            CameraIntrinsics cameraIntrinsics = null;
+
+            // Start video
+            MediaFrameSource mediaFrameSource = _mediaCapture.FrameSources.Values.Single(x => x.Info.MediaStreamType == _mediaStreamType);
+
+            if (mediaFrameSource == null)
+            {
+                onGotCallback?.Invoke(null, null);
+                return;
+            }
+
+            var pixelFormat = MediaEncodingSubtypes.Bgra8;
+            _frameReader = await _mediaCapture.CreateFrameReaderAsync(mediaFrameSource, pixelFormat);
+
+            await _frameReader.StartAsync();
+
+            IEnumerable<VideoEncodingProperties> allProperties = _mediaCapture.VideoDeviceController.GetAvailableMediaStreamProperties(_mediaStreamType).Select(x => x as VideoEncodingProperties);
+
+            foreach (var property in allProperties)
+            {
+                await _mediaCapture.VideoDeviceController.SetMediaStreamPropertiesAsync(_mediaStreamType, property);
+
+                // Get CameraIntrinsics
+                var taskCompletionSource = new TaskCompletionSource<bool>();
+
+                TypedEventHandler<MediaFrameReader, MediaFrameArrivedEventArgs> handler = null;
+                handler = (MediaFrameReader sender, MediaFrameArrivedEventArgs args) =>
+                {
+                    using (var frameReference = _frameReader.TryAcquireLatestFrame()) //frame: MediaFrameReference
+                    {
+                        if (frameReference != null)
+                        {
+                            cameraIntrinsics = frameReference.VideoMediaFrame.CameraIntrinsics;
+
+                            taskCompletionSource.SetResult(true);
+                        }
+                        else
+                        {
+                            taskCompletionSource.SetResult(false);
+                        }
+                    }
+                    _frameReader.FrameArrived -= handler;
+                };
+                _frameReader.FrameArrived += handler;
+
+                var result = await taskCompletionSource.Task;
+
+                if (result == false)
+                {
+                    onGotCallback?.Invoke(null, null);
+                    return;
+                }
+
+                onGotCallback?.Invoke(cameraIntrinsics, property);
+            }
+
+            // Stop video
+            await _frameReader.StopAsync();
+            _frameReader.Dispose();
+            _frameReader = null;
+        }
+
+        public void Dispose()
+        {
+            if (IsStreaming)
+            {
+                throw new Exception("Please make sure StopVideoModeAsync() is called before displosing the VideoCapture object.");
+            }
+
+            _mediaCapture?.Dispose();
+        }
+
+        async Task CreateMediaCaptureAsync()
+        {
+            if (_mediaCapture != null)
+            {
+                throw new Exception("The MediaCapture object has already been created.");
+            }
+
+            
+            // from https://github.com/qian256/HoloLensARToolKit/blob/bef36a89f191ab7d389d977c46639376069bbed6/HoloLensARToolKit/Assets/ARToolKitUWP/Scripts/ARUWPVideo.cs#L301
+            _mediaCapture = new MediaCapture();
+            if (_hololensDevice == 1 || _hololensDevice == 0)
+            {
+                var settings = new MediaCaptureInitializationSettings
+                {
+                    SourceGroup = _frameSourceGroup,
+                    // This media capture can share streaming with other apps.
+                    //SharingMode = MediaCaptureSharingMode.SharedReadOnly,
+                    SharingMode = MediaCaptureSharingMode.ExclusiveControl,
+                    // Only stream video and don't initialize audio capture devices.
+                    StreamingCaptureMode = StreamingCaptureMode.Video,
+                    // Set to CPU to ensure frames always contain CPU SoftwareBitmap images
+                    // instead of preferring GPU D3DSurface images.
+                    MemoryPreference = MediaCaptureMemoryPreference.Cpu
+                };
+                await _mediaCapture.InitializeAsync(settings);
+            }
+            else if (_hololensDevice == 2)
+            {
+                string deviceId = _frameSourceGroup.Id;
+                // Look up for all video profiles
+                IReadOnlyList<MediaCaptureVideoProfile> profileList = MediaCapture.FindKnownVideoProfiles(deviceId, KnownVideoProfile.VideoConferencing);
+
+                // Initialize mediacapture with the source group.
+                var settings = new MediaCaptureInitializationSettings
+                {
+                    VideoDeviceId = deviceId,
+                    VideoProfile = profileList[0],
+                    // This media capture can share streaming with other apps.
+                    SharingMode = MediaCaptureSharingMode.ExclusiveControl,
+                    // Only stream video and don't initialize audio capture devices.
+                    StreamingCaptureMode = StreamingCaptureMode.Video,
+                    // Set to CPU to ensure frames always contain CPU SoftwareBitmap images
+                    // instead of preferring GPU D3DSurface images.
+                    MemoryPreference = MediaCaptureMemoryPreference.Cpu
+                };
+                await _mediaCapture.InitializeAsync(settings);
+            }
+
+            _mediaCapture.VideoDeviceController.Focus.TrySetAuto(true);
+        }
+
+        static bool IsColorVideo(MediaFrameSourceInfo sourceInfo)
+        {
+            return (sourceInfo.MediaStreamType == _mediaStreamType &&
+                sourceInfo.SourceKind == MediaFrameSourceKind.Color);
+        }
+    }
+#endif
+}
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker/CameraIntrinsicsCheckerHelper.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraIntrinsicsChecker/HLCameraIntrinsicsCheckerHelper.cs.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensCameraIntrinsicsChecker/CameraIntrinsicsCheckerHelper.cs.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraIntrinsicsChecker/HLCameraIntrinsicsCheckerHelper.cs.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample.meta
similarity index 57%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample.meta
index 56f0cb6..f91ad87 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample.meta
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample.meta
@@ -1,9 +1,8 @@
 fileFormatVersion: 2
-guid: 33ad9f4c9af093e478d37ef199077e3b
+guid: 9923f9f988bea174cadd33c675dccd13
 folderAsset: yes
-timeCreated: 1494675430
-licenseType: Free
 DefaultImporter:
+  externalObjects: {}
   userData: 
   assetBundleName: 
   assetBundleVariant: 
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/ComicFilter.cs b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/ComicFilter.cs
similarity index 96%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/ComicFilter.cs
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/ComicFilter.cs
index 7fe773a..afe9276 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/ComicFilter.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/ComicFilter.cs
@@ -1,176 +1,176 @@
-using OpenCVForUnity.CoreModule;
-using OpenCVForUnity.ImgprocModule;
-using OpenCVForUnity.UtilsModule;
-using System;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-
-    public class ComicFilter
-    {
-
-        Mat grayMat;
-        Mat maskMat;
-        Mat screentoneMat;
-        Mat grayDstMat;
-
-        Mat grayLUT;
-        Mat contrastAdjustmentsLUT;
-        Mat kernel_dilate;
-        Mat kernel_erode;
-        Size blurSize;
-        int blackThresh;
-        bool drawMainLine;
-        bool useNoiseFilter;
-
-
-        public ComicFilter(int blackThresh = 60, int grayThresh = 120, int thickness = 5, bool useNoiseFilter = true)
-        {
-            this.blackThresh = blackThresh;
-            this.drawMainLine = (thickness != 0);
-            this.useNoiseFilter = useNoiseFilter;
-
-            grayLUT = new Mat(1, 256, CvType.CV_8UC1);
-            byte[] lutArray = new byte[256];
-            for (int i = 0; i < lutArray.Length; i++)
-            {
-                if (blackThresh <= i && i < grayThresh)
-                    lutArray[i] = 255;
-            }
-            MatUtils.copyToMat(lutArray, grayLUT);
-
-            if (drawMainLine)
-            {
-                kernel_dilate = new Mat(thickness, thickness, CvType.CV_8UC1, new Scalar(1));
-
-                int erode = (thickness >= 5) ? 2 : 1;
-                kernel_erode = new Mat(erode, erode, CvType.CV_8UC1, new Scalar(1));
-
-                int blur = (thickness >= 4) ? thickness - 1 : 3;
-                blurSize = new Size(blur, blur);
-
-                contrastAdjustmentsLUT = new Mat(1, 256, CvType.CV_8UC1);
-                byte[] contrastAdjustmentsLUTArray = new byte[256];
-                for (int i = 0; i < contrastAdjustmentsLUTArray.Length; i++)
-                {
-                    int a = (int)(i * 1.5f);
-                    contrastAdjustmentsLUTArray[i] = (a > byte.MaxValue) ? (byte)255 : (byte)a;
-
-                }
-                MatUtils.copyToMat(contrastAdjustmentsLUTArray, contrastAdjustmentsLUT);
-            }
-        }
-
-        public void Process(Mat src, Mat dst, bool isBGR = false)
-        {
-            if (src == null)
-                throw new ArgumentNullException("src == null");
-            if (dst == null)
-                throw new ArgumentNullException("dst == null");
-
-            if (grayMat != null && (grayMat.width() != src.width() || grayMat.height() != src.height()))
-            {
-                grayMat.Dispose();
-                grayMat = null;
-                maskMat.Dispose();
-                maskMat = null;
-                screentoneMat.Dispose();
-                screentoneMat = null;
-                grayDstMat.Dispose();
-                grayDstMat = null;
-            }
-            grayMat = grayMat ?? new Mat(src.height(), src.width(), CvType.CV_8UC1);
-            maskMat = maskMat ?? new Mat(src.height(), src.width(), CvType.CV_8UC1);
-            grayDstMat = grayDstMat ?? new Mat(src.height(), src.width(), CvType.CV_8UC1);
-
-            if (screentoneMat == null)
-            {
-                // create a striped screentone.
-                screentoneMat = new Mat(src.height(), src.width(), CvType.CV_8UC1, new Scalar(255));
-                for (int i = 0; i < screentoneMat.rows() * 2.5f; i = i + 4)
-                {
-                    Imgproc.line(screentoneMat, new Point(0, 0 + i), new Point(screentoneMat.cols(), -screentoneMat.cols() + i), new Scalar(0), 1);
-                }
-            }
-
-            if (src.type() == CvType.CV_8UC1)
-            {
-                src.copyTo(grayMat);
-            }
-            else if (dst.type() == CvType.CV_8UC3)
-            {
-                Imgproc.cvtColor(src, grayMat, (isBGR) ? Imgproc.COLOR_BGR2GRAY : Imgproc.COLOR_RGB2GRAY);
-            }
-            else
-            {
-                Imgproc.cvtColor(src, grayMat, (isBGR) ? Imgproc.COLOR_BGRA2GRAY : Imgproc.COLOR_RGBA2GRAY);
-            }
-
-
-            // binarize.
-            Imgproc.threshold(grayMat, grayDstMat, blackThresh, 255.0, Imgproc.THRESH_BINARY);
-
-            // draw striped screentone.
-            Core.LUT(grayMat, grayLUT, maskMat);
-            screentoneMat.copyTo(grayDstMat, maskMat);
-
-            // draw main line.
-            if (drawMainLine)
-            {
-                Core.LUT(grayMat, contrastAdjustmentsLUT, maskMat); // = grayMat.convertTo(maskMat, -1, 1.5, 0);
-
-                if (useNoiseFilter)
-                {
-                    Imgproc.blur(maskMat, grayMat, blurSize);
-                    Imgproc.dilate(grayMat, maskMat, kernel_dilate);
-                }
-                else
-                {
-                    Imgproc.dilate(maskMat, grayMat, kernel_dilate);
-                }
-                Core.absdiff(grayMat, maskMat, grayMat);
-                Imgproc.threshold(grayMat, maskMat, 25, 255.0, Imgproc.THRESH_BINARY);
-                if (useNoiseFilter)
-                {
-                    Imgproc.erode(maskMat, grayMat, kernel_erode);
-                    Core.bitwise_not(grayMat, maskMat);
-                    maskMat.copyTo(grayDstMat, grayMat);
-                }
-                else
-                {
-                    Core.bitwise_not(maskMat, grayMat);
-                    grayMat.copyTo(grayDstMat, maskMat);
-                }
-            }
-
-
-            if (dst.type() == CvType.CV_8UC1)
-            {
-                grayDstMat.copyTo(dst);
-            }
-            else if (dst.type() == CvType.CV_8UC3)
-            {
-                Imgproc.cvtColor(grayDstMat, dst, (isBGR) ? Imgproc.COLOR_GRAY2BGR : Imgproc.COLOR_GRAY2RGB);
-            }
-            else
-            {
-                Imgproc.cvtColor(grayDstMat, dst, (isBGR) ? Imgproc.COLOR_GRAY2BGRA : Imgproc.COLOR_GRAY2RGBA);
-            }
-        }
-
-        public void Dispose()
-        {
-            foreach (var mat in new[] { grayMat, maskMat, screentoneMat, grayDstMat, grayLUT, kernel_dilate, kernel_erode, contrastAdjustmentsLUT })
-                if (mat != null) mat.Dispose();
-
-            grayDstMat =
-            screentoneMat =
-            maskMat =
-            grayMat =
-            grayLUT =
-            kernel_dilate =
-            kernel_erode =
-            contrastAdjustmentsLUT = null;
-        }
-    }
+using OpenCVForUnity.CoreModule;
+using OpenCVForUnity.ImgprocModule;
+using OpenCVForUnity.UtilsModule;
+using System;
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+
+    public class ComicFilter
+    {
+
+        Mat grayMat;
+        Mat maskMat;
+        Mat screentoneMat;
+        Mat grayDstMat;
+
+        Mat grayLUT;
+        Mat contrastAdjustmentsLUT;
+        Mat kernel_dilate;
+        Mat kernel_erode;
+        Size blurSize;
+        int blackThresh;
+        bool drawMainLine;
+        bool useNoiseFilter;
+
+
+        public ComicFilter(int blackThresh = 60, int grayThresh = 120, int thickness = 5, bool useNoiseFilter = true)
+        {
+            this.blackThresh = blackThresh;
+            this.drawMainLine = (thickness != 0);
+            this.useNoiseFilter = useNoiseFilter;
+
+            grayLUT = new Mat(1, 256, CvType.CV_8UC1);
+            byte[] lutArray = new byte[256];
+            for (int i = 0; i < lutArray.Length; i++)
+            {
+                if (blackThresh <= i && i < grayThresh)
+                    lutArray[i] = 255;
+            }
+            MatUtils.copyToMat(lutArray, grayLUT);
+
+            if (drawMainLine)
+            {
+                kernel_dilate = new Mat(thickness, thickness, CvType.CV_8UC1, new Scalar(1));
+
+                int erode = (thickness >= 5) ? 2 : 1;
+                kernel_erode = new Mat(erode, erode, CvType.CV_8UC1, new Scalar(1));
+
+                int blur = (thickness >= 4) ? thickness - 1 : 3;
+                blurSize = new Size(blur, blur);
+
+                contrastAdjustmentsLUT = new Mat(1, 256, CvType.CV_8UC1);
+                byte[] contrastAdjustmentsLUTArray = new byte[256];
+                for (int i = 0; i < contrastAdjustmentsLUTArray.Length; i++)
+                {
+                    int a = (int)(i * 1.5f);
+                    contrastAdjustmentsLUTArray[i] = (a > byte.MaxValue) ? (byte)255 : (byte)a;
+
+                }
+                MatUtils.copyToMat(contrastAdjustmentsLUTArray, contrastAdjustmentsLUT);
+            }
+        }
+
+        public void Process(Mat src, Mat dst, bool isBGR = false)
+        {
+            if (src == null)
+                throw new ArgumentNullException("src == null");
+            if (dst == null)
+                throw new ArgumentNullException("dst == null");
+
+            if (grayMat != null && (grayMat.width() != src.width() || grayMat.height() != src.height()))
+            {
+                grayMat.Dispose();
+                grayMat = null;
+                maskMat.Dispose();
+                maskMat = null;
+                screentoneMat.Dispose();
+                screentoneMat = null;
+                grayDstMat.Dispose();
+                grayDstMat = null;
+            }
+            grayMat = grayMat ?? new Mat(src.height(), src.width(), CvType.CV_8UC1);
+            maskMat = maskMat ?? new Mat(src.height(), src.width(), CvType.CV_8UC1);
+            grayDstMat = grayDstMat ?? new Mat(src.height(), src.width(), CvType.CV_8UC1);
+
+            if (screentoneMat == null)
+            {
+                // create a striped screentone.
+                screentoneMat = new Mat(src.height(), src.width(), CvType.CV_8UC1, new Scalar(255));
+                for (int i = 0; i < screentoneMat.rows() * 2.5f; i = i + 4)
+                {
+                    Imgproc.line(screentoneMat, new Point(0, 0 + i), new Point(screentoneMat.cols(), -screentoneMat.cols() + i), new Scalar(0), 1);
+                }
+            }
+
+            if (src.type() == CvType.CV_8UC1)
+            {
+                src.copyTo(grayMat);
+            }
+            else if (dst.type() == CvType.CV_8UC3)
+            {
+                Imgproc.cvtColor(src, grayMat, (isBGR) ? Imgproc.COLOR_BGR2GRAY : Imgproc.COLOR_RGB2GRAY);
+            }
+            else
+            {
+                Imgproc.cvtColor(src, grayMat, (isBGR) ? Imgproc.COLOR_BGRA2GRAY : Imgproc.COLOR_RGBA2GRAY);
+            }
+
+
+            // binarize.
+            Imgproc.threshold(grayMat, grayDstMat, blackThresh, 255.0, Imgproc.THRESH_BINARY);
+
+            // draw striped screentone.
+            Core.LUT(grayMat, grayLUT, maskMat);
+            screentoneMat.copyTo(grayDstMat, maskMat);
+
+            // draw main line.
+            if (drawMainLine)
+            {
+                Core.LUT(grayMat, contrastAdjustmentsLUT, maskMat); // = grayMat.convertTo(maskMat, -1, 1.5, 0);
+
+                if (useNoiseFilter)
+                {
+                    Imgproc.blur(maskMat, grayMat, blurSize);
+                    Imgproc.dilate(grayMat, maskMat, kernel_dilate);
+                }
+                else
+                {
+                    Imgproc.dilate(maskMat, grayMat, kernel_dilate);
+                }
+                Core.absdiff(grayMat, maskMat, grayMat);
+                Imgproc.threshold(grayMat, maskMat, 25, 255.0, Imgproc.THRESH_BINARY);
+                if (useNoiseFilter)
+                {
+                    Imgproc.erode(maskMat, grayMat, kernel_erode);
+                    Core.bitwise_not(grayMat, maskMat);
+                    maskMat.copyTo(grayDstMat, grayMat);
+                }
+                else
+                {
+                    Core.bitwise_not(maskMat, grayMat);
+                    grayMat.copyTo(grayDstMat, maskMat);
+                }
+            }
+
+
+            if (dst.type() == CvType.CV_8UC1)
+            {
+                grayDstMat.copyTo(dst);
+            }
+            else if (dst.type() == CvType.CV_8UC3)
+            {
+                Imgproc.cvtColor(grayDstMat, dst, (isBGR) ? Imgproc.COLOR_GRAY2BGR : Imgproc.COLOR_GRAY2RGB);
+            }
+            else
+            {
+                Imgproc.cvtColor(grayDstMat, dst, (isBGR) ? Imgproc.COLOR_GRAY2BGRA : Imgproc.COLOR_GRAY2RGBA);
+            }
+        }
+
+        public void Dispose()
+        {
+            foreach (var mat in new[] { grayMat, maskMat, screentoneMat, grayDstMat, grayLUT, kernel_dilate, kernel_erode, contrastAdjustmentsLUT })
+                if (mat != null) mat.Dispose();
+
+            grayDstMat =
+            screentoneMat =
+            maskMat =
+            grayMat =
+            grayLUT =
+            kernel_dilate =
+            kernel_erode =
+            contrastAdjustmentsLUT = null;
+        }
+    }
 }
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/ComicFilter.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/ComicFilter.cs.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/ComicFilter.cs.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/ComicFilter.cs.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.cs b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.cs
similarity index 68%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.cs
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.cs
index 7e38910..14bd964 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.cs
@@ -1,349 +1,441 @@
-using System;
-using System.Collections.Generic;
-using UnityEngine;
-using UnityEngine.UI;
-using UnityEngine.SceneManagement;
-using OpenCVForUnity.CoreModule;
-using OpenCVForUnity.ImgprocModule;
-using OpenCVForUnity.UnityUtils.Helper;
-using OpenCVForUnity.UnityUtils;
-using HoloLensWithOpenCVForUnity.UnityUtils.Helper;
-using HoloLensCameraStream;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    /// <summary>
-    /// HoloLens Comic Filter Example
-    /// An example of image processing (comic filter) using OpenCVForUnity on Hololens.
-    /// Referring to http://dev.classmethod.jp/smartphone/opencv-manga-2/.
-    /// </summary>
-    [RequireComponent(typeof(HololensCameraStreamToMatHelper))]
-    public class HoloLensComicFilterExample : MonoBehaviour
-    {
-        /// <summary>
-        /// The comic filter.
-        /// </summary>
-        ComicFilter comicFilter;
-
-        /// <summary>
-        /// The texture.
-        /// </summary>
-        Texture2D texture;
-
-        /// <summary>
-        /// The quad renderer.
-        /// </summary>
-        Renderer quad_renderer;
-
-        /// <summary>
-        /// The web cam texture to mat helper.
-        /// </summary>
-        HololensCameraStreamToMatHelper webCamTextureToMatHelper;
-
-        public float vignetteScale = 1.5f;
-        public Slider VignetteScaleSlider;
-
-        readonly static Queue<Action> ExecuteOnMainThread = new Queue<Action>();
-
-
-        [HeaderAttribute("Debug")]
-
-        public Text renderFPS;
-        public Text videoFPS;
-        public Text trackFPS;
-        public Text debugStr;
-
-
-        // Use this for initialization
-        protected void Start()
-        {
-            VignetteScaleSlider.value = vignetteScale;
-
-            webCamTextureToMatHelper = gameObject.GetComponent<HololensCameraStreamToMatHelper>();
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            webCamTextureToMatHelper.frameMatAcquired += OnFrameMatAcquired;
-#endif
-            webCamTextureToMatHelper.outputColorFormat = WebCamTextureToMatHelper.ColorFormat.GRAY;
-            webCamTextureToMatHelper.Initialize();
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper initialized event.
-        /// </summary>
-        public void OnWebCamTextureToMatHelperInitialized()
-        {
-            Debug.Log("OnWebCamTextureToMatHelperInitialized");
-
-            Mat grayMat = webCamTextureToMatHelper.GetMat();
-
-            texture = new Texture2D(grayMat.cols(), grayMat.rows(), TextureFormat.Alpha8, false);
-            texture.wrapMode = TextureWrapMode.Clamp;
-            quad_renderer = gameObject.GetComponent<Renderer>() as Renderer;
-            quad_renderer.sharedMaterial.SetTexture("_MainTex", texture);
-
-
-            //Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
-
-
-            DebugUtils.AddDebugStr(webCamTextureToMatHelper.GetWidth() + " x " + webCamTextureToMatHelper.GetHeight() + " : " + webCamTextureToMatHelper.GetFPS());
-
-
-            Matrix4x4 projectionMatrix;
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            projectionMatrix = webCamTextureToMatHelper.GetProjectionMatrix ();
-            quad_renderer.sharedMaterial.SetMatrix ("_CameraProjectionMatrix", projectionMatrix);
-#else
-            // This value is obtained from PhotoCapture's TryGetProjectionMatrix() method. I do not know whether this method is good.
-            // Please see the discussion of this thread. Https://forums.hololens.com/discussion/782/live-stream-of-locatable-camera-webcam-in-unity
-            projectionMatrix = Matrix4x4.identity;
-            projectionMatrix.m00 = 2.31029f;
-            projectionMatrix.m01 = 0.00000f;
-            projectionMatrix.m02 = 0.09614f;
-            projectionMatrix.m03 = 0.00000f;
-            projectionMatrix.m10 = 0.00000f;
-            projectionMatrix.m11 = 4.10427f;
-            projectionMatrix.m12 = -0.06231f;
-            projectionMatrix.m13 = 0.00000f;
-            projectionMatrix.m20 = 0.00000f;
-            projectionMatrix.m21 = 0.00000f;
-            projectionMatrix.m22 = -1.00000f;
-            projectionMatrix.m23 = 0.00000f;
-            projectionMatrix.m30 = 0.00000f;
-            projectionMatrix.m31 = 0.00000f;
-            projectionMatrix.m32 = -1.00000f;
-            projectionMatrix.m33 = 0.00000f;
-            quad_renderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
-#endif
-
-            quad_renderer.sharedMaterial.SetFloat("_VignetteScale", vignetteScale);
-
-
-            float halfOfVerticalFov = Mathf.Atan(1.0f / projectionMatrix.m11);
-            float aspectRatio = (1.0f / Mathf.Tan(halfOfVerticalFov)) / projectionMatrix.m00;
-            Debug.Log("halfOfVerticalFov " + halfOfVerticalFov);
-            Debug.Log("aspectRatio " + aspectRatio);
-
-            comicFilter = new ComicFilter(60, 120, 3);
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper disposed event.
-        /// </summary>
-        public void OnWebCamTextureToMatHelperDisposed()
-        {
-            Debug.Log("OnWebCamTextureToMatHelperDisposed");
-
-            lock (ExecuteOnMainThread)
-            {
-                ExecuteOnMainThread.Clear();
-            }
-
-            comicFilter.Dispose();
-
-            if (debugStr != null)
-            {
-                debugStr.text = string.Empty;
-            }
-            DebugUtils.ClearDebugStr();
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper error occurred event.
-        /// </summary>
-        /// <param name="errorCode">Error code.</param>
-        public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
-        {
-            Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
-        }
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-        public void OnFrameMatAcquired(Mat grayMat, Matrix4x4 projectionMatrix, Matrix4x4 cameraToWorldMatrix, CameraIntrinsics cameraIntrinsics)
-        {
-            DebugUtils.VideoTick();
-
-            comicFilter.Process(grayMat, grayMat, true);
-
-            //Imgproc.putText(grayMat, "W:" + grayMat.width() + " H:" + grayMat.height() + " SO:" + Screen.orientation, new Point(5, grayMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar(255), 2, Imgproc.LINE_AA, false);
-
-            DebugUtils.TrackTick();
-
-            Enqueue(() =>
-            {
-
-                if (!webCamTextureToMatHelper.IsPlaying()) return;
-
-                Utils.fastMatToTexture2D(grayMat, texture);
-                grayMat.Dispose();
-
-                Matrix4x4 worldToCameraMatrix = cameraToWorldMatrix.inverse;
-
-                quad_renderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", worldToCameraMatrix);
-
-                // Position the canvas object slightly in front
-                // of the real world web camera.
-                Vector3 position = cameraToWorldMatrix.GetColumn(3) - cameraToWorldMatrix.GetColumn(2) * 2.2f;
-
-                // Rotate the canvas object so that it faces the user.
-                Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
-
-                gameObject.transform.position = position;
-                gameObject.transform.rotation = rotation;
-
-            });
-        }
-
-        private void Update()
-        {
-            lock (ExecuteOnMainThread)
-            {
-                while (ExecuteOnMainThread.Count > 0)
-                {
-                    ExecuteOnMainThread.Dequeue().Invoke();
-                }
-            }
-        }
-
-        private void Enqueue(Action action)
-        {
-            lock (ExecuteOnMainThread)
-            {
-                ExecuteOnMainThread.Enqueue(action);
-            }
-        }
-
-#else
-
-        // Update is called once per frame
-        void Update()
-        {
-            if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
-            {
-                DebugUtils.VideoTick();
-
-                Mat grayMat = webCamTextureToMatHelper.GetMat();
-
-                comicFilter.Process(grayMat, grayMat, false);
-
-                //Imgproc.putText(grayMat, "W:" + grayMat.width() + " H:" + grayMat.height() + " SO:" + Screen.orientation, new Point(5, grayMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar(255), 2, Imgproc.LINE_AA, false);
-
-                DebugUtils.TrackTick();
-
-                Utils.fastMatToTexture2D(grayMat, texture);
-            }
-
-            if (webCamTextureToMatHelper.IsPlaying())
-            {
-
-                Matrix4x4 cameraToWorldMatrix = webCamTextureToMatHelper.GetCameraToWorldMatrix();
-                Matrix4x4 worldToCameraMatrix = cameraToWorldMatrix.inverse;
-
-                quad_renderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", worldToCameraMatrix);
-
-                // Position the canvas object slightly in front
-                // of the real world web camera.
-                Vector3 position = cameraToWorldMatrix.GetColumn(3) - cameraToWorldMatrix.GetColumn(2) * 2.2f;
-
-                // Rotate the canvas object so that it faces the user.
-                Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
-
-                gameObject.transform.position = position;
-                gameObject.transform.rotation = rotation;
-            }
-        }
-#endif
-
-        void LateUpdate()
-        {
-            DebugUtils.RenderTick();
-            float renderDeltaTime = DebugUtils.GetRenderDeltaTime();
-            float videoDeltaTime = DebugUtils.GetVideoDeltaTime();
-            float trackDeltaTime = DebugUtils.GetTrackDeltaTime();
-
-            if (renderFPS != null)
-            {
-                renderFPS.text = string.Format("Render: {0:0.0} ms ({1:0.} fps)", renderDeltaTime, 1000.0f / renderDeltaTime);
-            }
-            if (videoFPS != null)
-            {
-                videoFPS.text = string.Format("Video: {0:0.0} ms ({1:0.} fps)", videoDeltaTime, 1000.0f / videoDeltaTime);
-            }
-            if (trackFPS != null)
-            {
-                trackFPS.text = string.Format("Track:   {0:0.0} ms ({1:0.} fps)", trackDeltaTime, 1000.0f / trackDeltaTime);
-            }
-            if (debugStr != null)
-            {
-                if (DebugUtils.GetDebugStrLength() > 0)
-                {
-                    if (debugStr.preferredHeight >= debugStr.rectTransform.rect.height)
-                        debugStr.text = string.Empty;
-
-                    debugStr.text += DebugUtils.GetDebugStr();
-                    DebugUtils.ClearDebugStr();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the destroy event.
-        /// </summary>
-        void OnDestroy()
-        {
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            webCamTextureToMatHelper.frameMatAcquired -= OnFrameMatAcquired;
-#endif
-            webCamTextureToMatHelper.Dispose();
-        }
-
-        /// <summary>
-        /// Raises the back button click event.
-        /// </summary>
-        public void OnBackButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
-        }
-
-        /// <summary>
-        /// Raises the play button click event.
-        /// </summary>
-        public void OnPlayButtonClick()
-        {
-            webCamTextureToMatHelper.Play();
-        }
-
-        /// <summary>
-        /// Raises the pause button click event.
-        /// </summary>
-        public void OnPauseButtonClick()
-        {
-            webCamTextureToMatHelper.Pause();
-        }
-
-        /// <summary>
-        /// Raises the stop button click event.
-        /// </summary>
-        public void OnStopButtonClick()
-        {
-            webCamTextureToMatHelper.Stop();
-        }
-
-        /// <summary>
-        /// Raises the change camera button click event.
-        /// </summary>
-        public void OnChangeCameraButtonClick()
-        {
-            webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.IsFrontFacing();
-        }
-
-        /// <summary>
-        /// Raises the vignette scale slider value changed event.
-        /// </summary>
-        public void OnVignetteScaleSliderValueChanged()
-        {
-            vignetteScale = VignetteScaleSlider.value;
-
-            if (quad_renderer != null)
-                quad_renderer.sharedMaterial.SetFloat("_VignetteScale", vignetteScale);
-        }
-    }
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.SceneManagement;
+using OpenCVForUnity.CoreModule;
+using OpenCVForUnity.ImgprocModule;
+using OpenCVForUnity.UnityUtils.Helper;
+using OpenCVForUnity.UnityUtils;
+using HoloLensWithOpenCVForUnity.UnityUtils.Helper;
+using HoloLensCameraStream;
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    /// <summary>
+    /// HLCameraStreamToMatHelper Example
+    /// An example of image processing (comic filter) using OpenCVForUnity on Hololens.
+    /// Referring to http://dev.classmethod.jp/smartphone/opencv-manga-2/.
+    /// </summary>
+    [RequireComponent(typeof(HLCameraStreamToMatHelper))]
+    public class HLCameraStreamToMatHelperExample : MonoBehaviour
+    {
+        /// <summary>
+        /// The rotate 90 degree toggle.
+        /// </summary>
+        public Toggle rotate90DegreeToggle;
+
+        /// <summary>
+        /// The flip vertical toggle.
+        /// </summary>
+        public Toggle flipVerticalToggle;
+
+        /// <summary>
+        /// The flip horizontal toggle.
+        /// </summary>
+        public Toggle flipHorizontalToggle;
+
+        /// <summary>
+        /// Determines if applys comic filter.
+        /// </summary>
+        public bool applyComicFilter = false;
+
+        /// <summary>
+        /// The apply comic filter toggle.
+        /// </summary>
+        public Toggle applyComicFilterToggle;
+
+        /// <summary>
+        /// The vignette scale.
+        /// </summary>
+        public float vignetteScale = 0f;
+
+        /// <summary>
+        /// The vignette scale slider.
+        /// </summary>
+        public Slider VignetteScaleSlider;
+
+        /// <summary>
+        /// The comic filter.
+        /// </summary>
+        ComicFilter comicFilter;
+
+        /// <summary>
+        /// The texture.
+        /// </summary>
+        Texture2D texture;
+
+        /// <summary>
+        /// The quad renderer.
+        /// </summary>
+        Renderer quad_renderer;
+
+        /// <summary>
+        /// The web cam texture to mat helper.
+        /// </summary>
+        HLCameraStreamToMatHelper webCamTextureToMatHelper;
+
+        readonly static Queue<Action> ExecuteOnMainThread = new Queue<Action>();
+
+        [Space(10)]
+
+        [HeaderAttribute("Debug")]
+
+        public Text renderFPS;
+        public Text videoFPS;
+        public Text trackFPS;
+        public Text debugStr;
+
+        // Use this for initialization
+        protected void Start()
+        {
+            webCamTextureToMatHelper = gameObject.GetComponent<HLCameraStreamToMatHelper>();
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+            webCamTextureToMatHelper.frameMatAcquired += OnFrameMatAcquired;
+#endif
+            webCamTextureToMatHelper.outputColorFormat = WebCamTextureToMatHelper.ColorFormat.BGRA;
+            webCamTextureToMatHelper.Initialize();
+
+            // Update GUI state
+            rotate90DegreeToggle.isOn = webCamTextureToMatHelper.rotate90Degree;
+            flipVerticalToggle.isOn = webCamTextureToMatHelper.flipVertical;
+            flipHorizontalToggle.isOn = webCamTextureToMatHelper.flipHorizontal;
+            applyComicFilterToggle.isOn = applyComicFilter;
+            VignetteScaleSlider.value = vignetteScale;
+        }
+
+        /// <summary>
+        /// Raises the web cam texture to mat helper initialized event.
+        /// </summary>
+        public void OnWebCamTextureToMatHelperInitialized()
+        {
+            Debug.Log("OnWebCamTextureToMatHelperInitialized");
+
+            Mat bgraMat = webCamTextureToMatHelper.GetMat();
+
+            texture = new Texture2D(bgraMat.cols(), bgraMat.rows(), TextureFormat.BGRA32, false);
+            texture.wrapMode = TextureWrapMode.Clamp;
+            quad_renderer = gameObject.GetComponent<Renderer>() as Renderer;
+            quad_renderer.sharedMaterial.SetTexture("_MainTex", texture);
+
+
+            //Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
+
+            DebugUtils.AddDebugStr(webCamTextureToMatHelper.outputColorFormat.ToString() + " "+ webCamTextureToMatHelper.GetWidth() + " x " + webCamTextureToMatHelper.GetHeight() + " : " + webCamTextureToMatHelper.GetFPS());
+
+
+            Matrix4x4 projectionMatrix;
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+            projectionMatrix = webCamTextureToMatHelper.GetProjectionMatrix();
+            quad_renderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
+#else
+            // This value is obtained from PhotoCapture's TryGetProjectionMatrix() method. I do not know whether this method is good.
+            // Please see the discussion of this thread. Https://forums.hololens.com/discussion/782/live-stream-of-locatable-camera-webcam-in-unity
+            projectionMatrix = Matrix4x4.identity;
+            projectionMatrix.m00 = 2.31029f;
+            projectionMatrix.m01 = 0.00000f;
+            projectionMatrix.m02 = 0.09614f;
+            projectionMatrix.m03 = 0.00000f;
+            projectionMatrix.m10 = 0.00000f;
+            projectionMatrix.m11 = 4.10427f;
+            projectionMatrix.m12 = -0.06231f;
+            projectionMatrix.m13 = 0.00000f;
+            projectionMatrix.m20 = 0.00000f;
+            projectionMatrix.m21 = 0.00000f;
+            projectionMatrix.m22 = -1.00000f;
+            projectionMatrix.m23 = 0.00000f;
+            projectionMatrix.m30 = 0.00000f;
+            projectionMatrix.m31 = 0.00000f;
+            projectionMatrix.m32 = -1.00000f;
+            projectionMatrix.m33 = 0.00000f;
+            quad_renderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
+#endif
+
+            quad_renderer.sharedMaterial.SetFloat("_VignetteScale", vignetteScale);
+
+
+            float halfOfVerticalFov = Mathf.Atan(1.0f / projectionMatrix.m11);
+            float aspectRatio = (1.0f / Mathf.Tan(halfOfVerticalFov)) / projectionMatrix.m00;
+            Debug.Log("halfOfVerticalFov " + halfOfVerticalFov);
+            Debug.Log("aspectRatio " + aspectRatio);
+
+            comicFilter = new ComicFilter(60, 120, 3);
+        }
+
+        /// <summary>
+        /// Raises the web cam texture to mat helper disposed event.
+        /// </summary>
+        public void OnWebCamTextureToMatHelperDisposed()
+        {
+            Debug.Log("OnWebCamTextureToMatHelperDisposed");
+
+            lock (ExecuteOnMainThread)
+            {
+                ExecuteOnMainThread.Clear();
+            }
+
+            comicFilter.Dispose();
+
+            if (debugStr != null)
+            {
+                debugStr.text = string.Empty;
+            }
+            DebugUtils.ClearDebugStr();
+        }
+
+        /// <summary>
+        /// Raises the web cam texture to mat helper error occurred event.
+        /// </summary>
+        /// <param name="errorCode">Error code.</param>
+        public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
+        {
+            Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
+        }
+
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+        public void OnFrameMatAcquired(Mat bgraMat, Matrix4x4 projectionMatrix, Matrix4x4 cameraToWorldMatrix, CameraIntrinsics cameraIntrinsics)
+        {
+            DebugUtils.VideoTick();
+
+            if (applyComicFilter)
+            {
+                comicFilter.Process(bgraMat, bgraMat, true);
+            }
+            else
+            {
+                Imgproc.rectangle(bgraMat, new Point(0, 0), new Point(bgraMat.width(), bgraMat.height()), new Scalar(255, 0, 0, 255), 2);
+                Imgproc.putText(bgraMat, "W:" + bgraMat.width() + " H:" + bgraMat.height(), new Point(5, bgraMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar(255, 0, 0, 255), 2, Imgproc.LINE_AA, false);
+            }
+
+            DebugUtils.TrackTick();
+
+            Enqueue(() =>
+            {
+
+                if (!webCamTextureToMatHelper.IsPlaying()) return;
+
+                // For BGRA or BGR format, use the fastMatToTexture2D method.
+                Utils.fastMatToTexture2D(bgraMat, texture);
+                bgraMat.Dispose();
+
+                Matrix4x4 worldToCameraMatrix = cameraToWorldMatrix.inverse;
+
+                quad_renderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", worldToCameraMatrix);
+                quad_renderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
+
+                // Position the canvas object slightly in front
+                // of the real world web camera.
+                Vector3 position = cameraToWorldMatrix.GetColumn(3) - cameraToWorldMatrix.GetColumn(2) * 2.2f;
+
+                // Rotate the canvas object so that it faces the user.
+                Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
+
+                gameObject.transform.position = position;
+                gameObject.transform.rotation = rotation;
+
+            });
+        }
+
+        private void Update()
+        {
+            lock (ExecuteOnMainThread)
+            {
+                while (ExecuteOnMainThread.Count > 0)
+                {
+                    ExecuteOnMainThread.Dequeue().Invoke();
+                }
+            }
+        }
+
+        private void Enqueue(Action action)
+        {
+            lock (ExecuteOnMainThread)
+            {
+                ExecuteOnMainThread.Enqueue(action);
+            }
+        }
+
+#else
+
+        // Update is called once per frame
+        void Update()
+        {
+            if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
+            {
+                DebugUtils.VideoTick();
+
+                Mat bgraMat = webCamTextureToMatHelper.GetMat();
+
+                if (applyComicFilter)
+                {
+                    comicFilter.Process(bgraMat, bgraMat, false);
+                }
+                else
+                {
+                    Imgproc.rectangle(bgraMat, new Point(0, 0), new Point(bgraMat.width(), bgraMat.height()), new Scalar(255, 0, 0, 255), 2);
+                    Imgproc.putText(bgraMat, "W:" + bgraMat.width() + " H:" + bgraMat.height(), new Point(5, bgraMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar(255, 0, 0, 255), 2, Imgproc.LINE_AA, false);
+                }
+
+                DebugUtils.TrackTick();
+
+                // For BGRA or BGR format, use the fastMatToTexture2D method.
+                Utils.fastMatToTexture2D(bgraMat, texture);
+            }
+
+            if (webCamTextureToMatHelper.IsPlaying())
+            {
+
+                Matrix4x4 cameraToWorldMatrix = webCamTextureToMatHelper.GetCameraToWorldMatrix();
+                Matrix4x4 worldToCameraMatrix = cameraToWorldMatrix.inverse;
+
+                quad_renderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", worldToCameraMatrix);
+
+                // Position the canvas object slightly in front
+                // of the real world web camera.
+                Vector3 position = cameraToWorldMatrix.GetColumn(3) - cameraToWorldMatrix.GetColumn(2) * 2.2f;
+
+                // Rotate the canvas object so that it faces the user.
+                Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
+
+                gameObject.transform.position = position;
+                gameObject.transform.rotation = rotation;
+            }
+        }
+#endif
+
+        void LateUpdate()
+        {
+            DebugUtils.RenderTick();
+            float renderDeltaTime = DebugUtils.GetRenderDeltaTime();
+            float videoDeltaTime = DebugUtils.GetVideoDeltaTime();
+            float trackDeltaTime = DebugUtils.GetTrackDeltaTime();
+
+            if (renderFPS != null)
+            {
+                renderFPS.text = string.Format("Render: {0:0.0} ms ({1:0.} fps)", renderDeltaTime, 1000.0f / renderDeltaTime);
+            }
+            if (videoFPS != null)
+            {
+                videoFPS.text = string.Format("Video: {0:0.0} ms ({1:0.} fps)", videoDeltaTime, 1000.0f / videoDeltaTime);
+            }
+            if (trackFPS != null)
+            {
+                trackFPS.text = string.Format("Track:   {0:0.0} ms ({1:0.} fps)", trackDeltaTime, 1000.0f / trackDeltaTime);
+            }
+            if (debugStr != null)
+            {
+                if (DebugUtils.GetDebugStrLength() > 0)
+                {
+                    if (debugStr.preferredHeight >= debugStr.rectTransform.rect.height)
+                        debugStr.text = string.Empty;
+
+                    debugStr.text += DebugUtils.GetDebugStr();
+                    DebugUtils.ClearDebugStr();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Raises the destroy event.
+        /// </summary>
+        void OnDestroy()
+        {
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+            webCamTextureToMatHelper.frameMatAcquired -= OnFrameMatAcquired;
+#endif
+            webCamTextureToMatHelper.Dispose();
+        }
+
+        /// <summary>
+        /// Raises the back button click event.
+        /// </summary>
+        public void OnBackButtonClick()
+        {
+            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
+        }
+
+        /// <summary>
+        /// Raises the play button click event.
+        /// </summary>
+        public void OnPlayButtonClick()
+        {
+            webCamTextureToMatHelper.Play();
+        }
+
+        /// <summary>
+        /// Raises the pause button click event.
+        /// </summary>
+        public void OnPauseButtonClick()
+        {
+            webCamTextureToMatHelper.Pause();
+        }
+
+        /// <summary>
+        /// Raises the stop button click event.
+        /// </summary>
+        public void OnStopButtonClick()
+        {
+            webCamTextureToMatHelper.Stop();
+        }
+
+        /// <summary>
+        /// Raises the change camera button click event.
+        /// </summary>
+        public void OnChangeCameraButtonClick()
+        {
+            webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.IsFrontFacing();
+        }
+
+        /// <summary>
+        /// Raises the rotate 90 degree toggle value changed event.
+        /// </summary>
+        public void OnRotate90DegreeToggleValueChanged()
+        {
+            if (rotate90DegreeToggle.isOn != webCamTextureToMatHelper.rotate90Degree)
+            {
+                webCamTextureToMatHelper.rotate90Degree = rotate90DegreeToggle.isOn;
+            }
+        }
+
+        /// <summary>
+        /// Raises the flip vertical toggle value changed event.
+        /// </summary>
+        public void OnFlipVerticalToggleValueChanged()
+        {
+            if (flipVerticalToggle.isOn != webCamTextureToMatHelper.flipVertical)
+            {
+                webCamTextureToMatHelper.flipVertical = flipVerticalToggle.isOn;
+            }
+        }
+
+        /// <summary>
+        /// Raises the flip horizontal toggle value changed event.
+        /// </summary>
+        public void OnFlipHorizontalToggleValueChanged()
+        {
+            if (flipHorizontalToggle.isOn != webCamTextureToMatHelper.flipHorizontal)
+            {
+                webCamTextureToMatHelper.flipHorizontal = flipHorizontalToggle.isOn;
+            }
+        }
+
+        /// <summary>
+        /// Raises the apply comic filter toggle value changed event.
+        /// </summary>
+        public void OnApplyComicFilterToggleValueChanged()
+        {
+            applyComicFilter = applyComicFilterToggle.isOn;
+        }
+
+        /// <summary>
+        /// Raises the vignette scale slider value changed event.
+        /// </summary>
+        public void OnVignetteScaleSliderValueChanged()
+        {
+            vignetteScale = VignetteScaleSlider.value;
+
+            if (quad_renderer != null)
+                quad_renderer.sharedMaterial.SetFloat("_VignetteScale", vignetteScale);
+        }
+    }
 }
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.cs.meta
similarity index 82%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.cs.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.cs.meta
index 2ed2361..33be75d 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.cs.meta
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.cs.meta
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.unity b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.unity
similarity index 63%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.unity
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.unity
index 5246278..b8f6d09 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.unity
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.unity.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.unity.meta
similarity index 70%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.unity.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.unity.meta
index 9d2b196..99d0741 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.unity.meta
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLCameraStreamToMatHelperExample/HLCameraStreamToMatHelperExample.unity.meta
@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 0234af6998912c54d80d30fd71ea3dac
+guid: 875efcb3773a8ca4daaad214aa3f5e46
 DefaultImporter:
   userData: 
   assetBundleName: 
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample/HoloLensFaceDetectionExample.cs b/Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample/HLFaceDetectionExample.cs
similarity index 91%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample/HoloLensFaceDetectionExample.cs
rename to Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample/HLFaceDetectionExample.cs
index 011bda8..252e3eb 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample/HoloLensFaceDetectionExample.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample/HLFaceDetectionExample.cs
@@ -1,862 +1,880 @@
-using System;
-using System.Collections.Generic;
-using System.Threading;
-using UnityEngine;
-using UnityEngine.UI;
-using UnityEngine.SceneManagement;
-using OpenCVForUnity.RectangleTrack;
-using OpenCVForUnity.CoreModule;
-using OpenCVForUnity.ObjdetectModule;
-using OpenCVForUnity.UnityUtils;
-using OpenCVForUnity.UnityUtils.Helper;
-using OpenCVForUnity.ImgprocModule;
-using Rect = OpenCVForUnity.CoreModule.Rect;
-using HoloLensWithOpenCVForUnity.UnityUtils.Helper;
-using HoloLensCameraStream;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    /// <summary>
-    /// HoloLens Face Detection Example
-    /// An example of detecting face using OpenCVForUnity on Hololens.
-    /// Referring to https://github.com/Itseez/opencv/blob/master/modules/objdetect/src/detection_based_tracker.cpp.
-    /// </summary>
-    [RequireComponent(typeof(HololensCameraStreamToMatHelper), typeof(ImageOptimizationHelper))]
-    public class HoloLensFaceDetectionExample : MonoBehaviour
-    {
-        /// <summary>
-        /// Determines if enables the detection.
-        /// </summary>
-        public bool enableDetection = true;
-
-        /// <summary>
-        /// Determines if enable downscale.
-        /// </summary>
-        public bool enableDownScale;
-
-        /// <summary>
-        /// The enable downscale toggle.
-        /// </summary>
-        public Toggle enableDownScaleToggle;
-
-        /// <summary>
-        /// Determines if uses separate detection.
-        /// </summary>
-        public bool useSeparateDetection = false;
-
-        /// <summary>
-        /// The use separate detection toggle.
-        /// </summary>
-        public Toggle useSeparateDetectionToggle;
-
-        /// <summary>
-        /// Determines if displays camera image.
-        /// </summary>
-        public bool displayCameraImage = false;
-
-        /// <summary>
-        /// The display camera image toggle.
-        /// </summary>
-        public Toggle displayCameraImageToggle;
-
-        /// <summary>
-        /// The min detection size ratio.
-        /// </summary>
-        public float minDetectionSizeRatio = 0.07f;
-
-        /// <summary>
-        /// The webcam texture to mat helper.
-        /// </summary>
-        HololensCameraStreamToMatHelper webCamTextureToMatHelper;
-
-        /// <summary>
-        /// The image optimization helper.
-        /// </summary>
-        ImageOptimizationHelper imageOptimizationHelper;
-
-        /// <summary>
-        /// The texture.
-        /// </summary>
-        Texture2D texture;
-
-        /// <summary>
-        /// The cascade.
-        /// </summary>
-        CascadeClassifier cascade;
-
-        /// <summary>
-        /// The quad renderer.
-        /// </summary>
-        Renderer quad_renderer;
-
-        /// <summary>
-        /// The detection result.
-        /// </summary>
-        List<Rect> detectionResult = new List<Rect>();
-
-        Scalar COLOR_WHITE = new Scalar(255, 255, 255, 255);
-        Scalar COLOR_GRAY = new Scalar(128, 128, 128, 255);
-
-        Mat grayMat4Thread;
-        CascadeClassifier cascade4Thread;
-        readonly static Queue<Action> ExecuteOnMainThread = new Queue<Action>();
-        System.Object sync = new System.Object();
-
-        bool _isThreadRunning = false;
-        bool isThreadRunning
-        {
-            get
-            {
-                lock (sync)
-                    return _isThreadRunning;
-            }
-            set
-            {
-                lock (sync)
-                    _isThreadRunning = value;
-            }
-        }
-
-        RectangleTracker rectangleTracker;
-        float coeffTrackingWindowSize = 2.0f;
-        float coeffObjectSizeToTrack = 0.85f;
-        List<Rect> detectedObjectsInRegions = new List<Rect>();
-        List<Rect> resultObjects = new List<Rect>();
-
-        bool _isDetecting = false;
-        bool isDetecting
-        {
-            get
-            {
-                lock (sync)
-                    return _isDetecting;
-            }
-            set
-            {
-                lock (sync)
-                    _isDetecting = value;
-            }
-        }
-
-        bool _hasUpdatedDetectionResult = false;
-        bool hasUpdatedDetectionResult
-        {
-            get
-            {
-                lock (sync)
-                    return _hasUpdatedDetectionResult;
-            }
-            set
-            {
-                lock (sync)
-                    _hasUpdatedDetectionResult = value;
-            }
-        }
-
-        bool _isDetectingInFrameArrivedThread = false;
-        bool isDetectingInFrameArrivedThread
-        {
-            get
-            {
-                lock (sync)
-                    return _isDetectingInFrameArrivedThread;
-            }
-            set
-            {
-                lock (sync)
-                    _isDetectingInFrameArrivedThread = value;
-            }
-        }
-
-
-        [HeaderAttribute("Debug")]
-
-        public Text renderFPS;
-        public Text videoFPS;
-        public Text trackFPS;
-        public Text debugStr;
-
-
-        // Use this for initialization
-        protected void Start()
-        {
-            enableDownScaleToggle.isOn = enableDownScale;
-            useSeparateDetectionToggle.isOn = useSeparateDetection;
-            displayCameraImageToggle.isOn = displayCameraImage;
-
-            imageOptimizationHelper = gameObject.GetComponent<ImageOptimizationHelper>();
-            webCamTextureToMatHelper = gameObject.GetComponent<HololensCameraStreamToMatHelper>();
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            webCamTextureToMatHelper.frameMatAcquired += OnFrameMatAcquired;
-#endif
-            webCamTextureToMatHelper.outputColorFormat = WebCamTextureToMatHelper.ColorFormat.GRAY;
-            webCamTextureToMatHelper.Initialize();
-
-            rectangleTracker = new RectangleTracker();
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper initialized event.
-        /// </summary>
-        public void OnWebCamTextureToMatHelperInitialized()
-        {
-            Debug.Log("OnWebCamTextureToMatHelperInitialized");
-
-            Mat grayMat = webCamTextureToMatHelper.GetMat();
-
-            texture = new Texture2D(grayMat.cols(), grayMat.rows(), TextureFormat.Alpha8, false);
-            texture.wrapMode = TextureWrapMode.Clamp;
-            quad_renderer = gameObject.GetComponent<Renderer>() as Renderer;
-            quad_renderer.sharedMaterial.SetTexture("_MainTex", texture);
-            quad_renderer.sharedMaterial.SetVector("_VignetteOffset", new Vector4(0, 0));
-
-
-            //Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
-
-
-            DebugUtils.AddDebugStr(webCamTextureToMatHelper.GetWidth() + " x " + webCamTextureToMatHelper.GetHeight() + " : " + webCamTextureToMatHelper.GetFPS());
-            if (enableDownScale)
-                DebugUtils.AddDebugStr("enableDownScale = true: " + imageOptimizationHelper.downscaleRatio + " / " + webCamTextureToMatHelper.GetWidth() / imageOptimizationHelper.downscaleRatio + " x " + webCamTextureToMatHelper.GetHeight() / imageOptimizationHelper.downscaleRatio);
-
-
-            Matrix4x4 projectionMatrix;
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            projectionMatrix = webCamTextureToMatHelper.GetProjectionMatrix ();
-            quad_renderer.sharedMaterial.SetMatrix ("_CameraProjectionMatrix", projectionMatrix);
-#else
-            // This value is obtained from PhotoCapture's TryGetProjectionMatrix() method. I do not know whether this method is good.
-            // Please see the discussion of this thread. Https://forums.hololens.com/discussion/782/live-stream-of-locatable-camera-webcam-in-unity
-            projectionMatrix = Matrix4x4.identity;
-            projectionMatrix.m00 = 2.31029f;
-            projectionMatrix.m01 = 0.00000f;
-            projectionMatrix.m02 = 0.09614f;
-            projectionMatrix.m03 = 0.00000f;
-            projectionMatrix.m10 = 0.00000f;
-            projectionMatrix.m11 = 4.10427f;
-            projectionMatrix.m12 = -0.06231f;
-            projectionMatrix.m13 = 0.00000f;
-            projectionMatrix.m20 = 0.00000f;
-            projectionMatrix.m21 = 0.00000f;
-            projectionMatrix.m22 = -1.00000f;
-            projectionMatrix.m23 = 0.00000f;
-            projectionMatrix.m30 = 0.00000f;
-            projectionMatrix.m31 = 0.00000f;
-            projectionMatrix.m32 = -1.00000f;
-            projectionMatrix.m33 = 0.00000f;
-            quad_renderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
-#endif
-
-            quad_renderer.sharedMaterial.SetFloat("_VignetteScale", 0.0f);
-
-
-            cascade = new CascadeClassifier();
-            cascade.load(Utils.getFilePath("lbpcascade_frontalface.xml"));
-#if !UNITY_WSA_10_0 || UNITY_EDITOR
-            // "empty" method is not working on the UWP platform.
-            if (cascade.empty())
-            {
-                Debug.LogError("cascade file is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. ");
-            }
-#endif
-
-            grayMat4Thread = new Mat();
-            cascade4Thread = new CascadeClassifier();
-            cascade4Thread.load(Utils.getFilePath("haarcascade_frontalface_alt.xml"));
-#if !UNITY_WSA_10_0 || UNITY_EDITOR
-            // "empty" method is not working on the UWP platform.
-            if (cascade4Thread.empty())
-            {
-                Debug.LogError("cascade file is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. ");
-            }
-#endif
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper disposed event.
-        /// </summary>
-        public void OnWebCamTextureToMatHelperDisposed()
-        {
-            Debug.Log("OnWebCamTextureToMatHelperDisposed");
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-
-            while (isDetectingInFrameArrivedThread)
-            {
-                //Wait detecting stop
-            }
-#endif
-
-            StopThread();
-            lock (ExecuteOnMainThread)
-            {
-                ExecuteOnMainThread.Clear();
-            }
-            hasUpdatedDetectionResult = false;
-            isDetecting = false;
-
-            if (cascade != null)
-                cascade.Dispose();
-
-            if (grayMat4Thread != null)
-                grayMat4Thread.Dispose();
-
-            if (cascade4Thread != null)
-                cascade4Thread.Dispose();
-
-            rectangleTracker.Reset();
-
-            if (debugStr != null)
-            {
-                debugStr.text = string.Empty;
-            }
-            DebugUtils.ClearDebugStr();
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper error occurred event.
-        /// </summary>
-        /// <param name="errorCode">Error code.</param>
-        public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
-        {
-            Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
-        }
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-        public void OnFrameMatAcquired(Mat grayMat, Matrix4x4 projectionMatrix, Matrix4x4 cameraToWorldMatrix, CameraIntrinsics cameraIntrinsics)
-        {
-            isDetectingInFrameArrivedThread = true;
-
-            DebugUtils.VideoTick();
-
-            Mat downScaleMat = null;
-            float DOWNSCALE_RATIO;
-            if (enableDownScale)
-            {
-                downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
-                DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
-            }
-            else
-            {
-                downScaleMat = grayMat;
-                DOWNSCALE_RATIO = 1.0f;
-            }
-
-            Imgproc.equalizeHist(downScaleMat, downScaleMat);
-
-            if (enableDetection && !isDetecting)
-            {
-                isDetecting = true;
-
-                downScaleMat.copyTo(grayMat4Thread);
-
-                System.Threading.Tasks.Task.Run(() =>
-                {
-
-                    isThreadRunning = true;
-
-                    DetectObject(grayMat4Thread, out detectionResult, cascade4Thread);
-
-                    isThreadRunning = false;
-                    OnDetectionDone();
-                });
-            }
-
-            if (!useSeparateDetection)
-            {
-                if (hasUpdatedDetectionResult)
-                {
-                    hasUpdatedDetectionResult = false;
-
-                    lock (rectangleTracker)
-                    {
-                        rectangleTracker.UpdateTrackedObjects(detectionResult);
-                    }
-                }
-
-                lock (rectangleTracker)
-                {
-                    rectangleTracker.GetObjects(resultObjects, true);
-                }
-
-                if (!displayCameraImage)
-                {
-                    // fill all black.
-                    Imgproc.rectangle(grayMat, new Point(0, 0), new Point(grayMat.width(), grayMat.height()), new Scalar(0, 0, 0, 0), -1);
-                }
-
-                // draw face rect.
-                DrawDownScaleFaceRects(grayMat, resultObjects.ToArray(), DOWNSCALE_RATIO, COLOR_WHITE, 6);
-            }
-            else
-            {
-
-                Rect[] rectsWhereRegions;
-
-                if (hasUpdatedDetectionResult)
-                {
-                    hasUpdatedDetectionResult = false;
-
-                    //Enqueue(() =>
-                    //{
-                    //    Debug.Log("process: get rectsWhereRegions were got from detectionResult");
-                    //});
-
-                    lock (rectangleTracker)
-                    {
-                        rectsWhereRegions = detectionResult.ToArray();
-                    }
-                }
-                else
-                {
-                    //Enqueue(() =>
-                    //{
-                    //    Debug.Log("process: get rectsWhereRegions from previous positions");
-                    //});
-
-                    lock (rectangleTracker)
-                    {
-                        rectsWhereRegions = rectangleTracker.CreateCorrectionBySpeedOfRects();
-                    }
-                }
-
-                detectedObjectsInRegions.Clear();
-                int len = rectsWhereRegions.Length;
-                for (int i = 0; i < len; i++)
-                {
-                    DetectInRegion(downScaleMat, rectsWhereRegions[i], detectedObjectsInRegions, cascade);
-                }
-
-                lock (rectangleTracker)
-                {
-                    rectangleTracker.UpdateTrackedObjects(detectedObjectsInRegions);
-                    rectangleTracker.GetObjects(resultObjects, true);
-                }
-
-                if (!displayCameraImage)
-                {
-                    // fill all black.
-                    Imgproc.rectangle(grayMat, new Point(0, 0), new Point(grayMat.width(), grayMat.height()), new Scalar(0, 0, 0, 0), -1);
-                }
-
-                // draw previous rect.
-                DrawDownScaleFaceRects(grayMat, rectsWhereRegions, DOWNSCALE_RATIO, COLOR_GRAY, 1);
-
-                // draw face rect.
-                DrawDownScaleFaceRects(grayMat, resultObjects.ToArray(), DOWNSCALE_RATIO, COLOR_WHITE, 6);
-            }
-
-            DebugUtils.TrackTick();
-
-            Enqueue(() =>
-            {
-                if (!webCamTextureToMatHelper.IsPlaying()) return;
-
-                Utils.fastMatToTexture2D(grayMat, texture);
-                grayMat.Dispose();
-
-                Matrix4x4 worldToCameraMatrix = cameraToWorldMatrix.inverse;
-
-                quad_renderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", worldToCameraMatrix);
-
-                // Position the canvas object slightly in front
-                // of the real world web camera.
-                Vector3 position = cameraToWorldMatrix.GetColumn(3) - cameraToWorldMatrix.GetColumn(2) * 2.2f;
-
-                // Rotate the canvas object so that it faces the user.
-                Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
-
-                gameObject.transform.position = position;
-                gameObject.transform.rotation = rotation;
-
-            });
-
-            isDetectingInFrameArrivedThread = false;
-        }
-
-        private void Update()
-        {
-            lock (ExecuteOnMainThread)
-            {
-                while (ExecuteOnMainThread.Count > 0)
-                {
-                    ExecuteOnMainThread.Dequeue().Invoke();
-                }
-            }
-        }
-
-        private void Enqueue(Action action)
-        {
-            lock (ExecuteOnMainThread)
-            {
-                ExecuteOnMainThread.Enqueue(action);
-            }
-        }
-
-#else
-
-        // Update is called once per frame
-        void Update()
-        {
-            lock (ExecuteOnMainThread)
-            {
-                while (ExecuteOnMainThread.Count > 0)
-                {
-                    ExecuteOnMainThread.Dequeue().Invoke();
-                }
-            }
-
-            if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
-            {
-
-                DebugUtils.VideoTick();
-                
-                Mat grayMat = webCamTextureToMatHelper.GetMat();
-
-                Mat downScaleMat = null;
-                float DOWNSCALE_RATIO;
-                if (enableDownScale)
-                {
-                    downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
-                    DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
-                }
-                else
-                {
-                    downScaleMat = grayMat;
-                    DOWNSCALE_RATIO = 1.0f;
-                }
-
-                Imgproc.equalizeHist(downScaleMat, downScaleMat);
-
-                if (enableDetection && !isDetecting)
-                {
-                    isDetecting = true;
-
-                    downScaleMat.copyTo(grayMat4Thread);
-
-                    StartThread(ThreadWorker);
-                }
-
-                if (!useSeparateDetection)
-                {
-                    if (hasUpdatedDetectionResult)
-                    {
-                        hasUpdatedDetectionResult = false;
-
-                        rectangleTracker.UpdateTrackedObjects(detectionResult);
-                    }
-
-                    rectangleTracker.GetObjects(resultObjects, true);
-
-                    if (!displayCameraImage)
-                    {
-                        // fill all black.
-                        Imgproc.rectangle(grayMat, new Point(0, 0), new Point(grayMat.width(), grayMat.height()), new Scalar(0, 0, 0, 0), -1);
-                    }
-
-                    // draw face rect.
-                    DrawDownScaleFaceRects(grayMat, resultObjects.ToArray(), DOWNSCALE_RATIO, COLOR_WHITE, 6);
-                }
-                else
-                {
-
-                    Rect[] rectsWhereRegions;
-
-                    if (hasUpdatedDetectionResult)
-                    {
-                        hasUpdatedDetectionResult = false;
-
-                        //Debug.Log("process: get rectsWhereRegions were got from detectionResult");
-                        rectsWhereRegions = detectionResult.ToArray();
-                    }
-                    else
-                    {
-                        //Debug.Log("process: get rectsWhereRegions from previous positions");
-                        rectsWhereRegions = rectangleTracker.CreateCorrectionBySpeedOfRects();
-                    }
-
-                    detectedObjectsInRegions.Clear();
-                    int len = rectsWhereRegions.Length;
-                    for (int i = 0; i < len; i++)
-                    {
-                        DetectInRegion(downScaleMat, rectsWhereRegions[i], detectedObjectsInRegions, cascade);
-                    }
-
-                    rectangleTracker.UpdateTrackedObjects(detectedObjectsInRegions);
-                    rectangleTracker.GetObjects(resultObjects, true);
-
-                    if (!displayCameraImage)
-                    {
-                        // fill all black.
-                        Imgproc.rectangle(grayMat, new Point(0, 0), new Point(grayMat.width(), grayMat.height()), new Scalar(0, 0, 0, 0), -1);
-                    }
-
-                    // draw previous rect.
-                    DrawDownScaleFaceRects(grayMat, rectsWhereRegions, DOWNSCALE_RATIO, COLOR_GRAY, 1);
-
-                    // draw face rect.
-                    DrawDownScaleFaceRects(grayMat, resultObjects.ToArray(), DOWNSCALE_RATIO, COLOR_WHITE, 6);
-                }
-
-                DebugUtils.TrackTick();
-
-                Utils.fastMatToTexture2D(grayMat, texture);
-            }
-
-            if (webCamTextureToMatHelper.IsPlaying())
-            {
-
-                Matrix4x4 cameraToWorldMatrix = Camera.main.cameraToWorldMatrix; ;
-                Matrix4x4 worldToCameraMatrix = cameraToWorldMatrix.inverse;
-
-                quad_renderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", worldToCameraMatrix);
-
-                // Position the canvas object slightly in front
-                // of the real world web camera.
-                Vector3 position = cameraToWorldMatrix.GetColumn(3) - cameraToWorldMatrix.GetColumn(2) * 2.2f;
-
-                // Rotate the canvas object so that it faces the user.
-                Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
-
-                gameObject.transform.position = position;
-                gameObject.transform.rotation = rotation;
-            }
-        }
-#endif
-
-        private void StartThread(Action action)
-        {
-#if WINDOWS_UWP || (!UNITY_WSA_10_0 && (NET_4_6 || NET_STANDARD_2_0))
-            System.Threading.Tasks.Task.Run(() => action());
-#else
-            ThreadPool.QueueUserWorkItem(_ => action());
-#endif
-        }
-
-        private void StopThread()
-        {
-            if (!isThreadRunning)
-                return;
-
-            while (isThreadRunning)
-            {
-                //Wait threading stop
-            }
-        }
-
-        private void ThreadWorker()
-        {
-            isThreadRunning = true;
-
-            DetectObject(grayMat4Thread, out detectionResult, cascade4Thread);
-
-            lock (ExecuteOnMainThread)
-            {
-                if (ExecuteOnMainThread.Count == 0)
-                {
-                    ExecuteOnMainThread.Enqueue(() =>
-                    {
-                        OnDetectionDone();
-                    });
-                }
-            }
-
-            isThreadRunning = false;
-        }
-
-        private void DetectObject(Mat img, out List<Rect> detectedObjects, CascadeClassifier cascade)
-        {
-            int d = Mathf.Min(img.width(), img.height());
-            d = (int)Mathf.Round(d * minDetectionSizeRatio);
-
-            MatOfRect objects = new MatOfRect();
-            if (cascade != null)
-                cascade.detectMultiScale(img, objects, 1.1, 2, Objdetect.CASCADE_SCALE_IMAGE, new Size(d, d), new Size());
-
-            detectedObjects = objects.toList();
-        }
-
-
-        private void OnDetectionDone()
-        {
-            hasUpdatedDetectionResult = true;
-
-            isDetecting = false;
-        }
-
-        private void DetectInRegion(Mat img, Rect region, List<Rect> detectedObjectsInRegions, CascadeClassifier cascade)
-        {
-            Rect r0 = new Rect(new Point(), img.size());
-            Rect r1 = new Rect(region.x, region.y, region.width, region.height);
-            Rect.inflate(r1, (int)((r1.width * coeffTrackingWindowSize) - r1.width) / 2,
-                (int)((r1.height * coeffTrackingWindowSize) - r1.height) / 2);
-            r1 = Rect.intersect(r0, r1);
-
-            if ((r1.width <= 0) || (r1.height <= 0))
-            {
-                Debug.Log("detectInRegion: Empty intersection");
-                return;
-            }
-
-            int d = Math.Min(region.width, region.height);
-            d = (int)Math.Round(d * coeffObjectSizeToTrack);
-
-            using (MatOfRect tmpobjects = new MatOfRect())
-            using (Mat img1 = new Mat(img, r1)) //subimage for rectangle -- without data copying
-            {
-                cascade.detectMultiScale(img1, tmpobjects, 1.1, 2, 0 | Objdetect.CASCADE_DO_CANNY_PRUNING | Objdetect.CASCADE_SCALE_IMAGE | Objdetect.CASCADE_FIND_BIGGEST_OBJECT, new Size(d, d), new Size());
-
-                Rect[] tmpobjectsArray = tmpobjects.toArray();
-                int len = tmpobjectsArray.Length;
-                for (int i = 0; i < len; i++)
-                {
-                    Rect tmp = tmpobjectsArray[i];
-                    Rect r = new Rect(new Point(tmp.x + r1.x, tmp.y + r1.y), tmp.size());
-
-                    detectedObjectsInRegions.Add(r);
-                }
-            }
-        }
-
-        private void DrawDownScaleFaceRects(Mat img, Rect[] rects, float downscaleRatio, Scalar color, int thickness)
-        {
-            int len = rects.Length;
-            for (int i = 0; i < len; i++)
-            {
-                Rect rect = new Rect(
-                    (int)(rects[i].x * downscaleRatio),
-                    (int)(rects[i].y * downscaleRatio),
-                    (int)(rects[i].width * downscaleRatio),
-                    (int)(rects[i].height * downscaleRatio)
-                );
-                Imgproc.rectangle(img, rect, color, thickness);
-            }
-        }
-
-        void LateUpdate()
-        {
-            DebugUtils.RenderTick();
-            float renderDeltaTime = DebugUtils.GetRenderDeltaTime();
-            float videoDeltaTime = DebugUtils.GetVideoDeltaTime();
-            float trackDeltaTime = DebugUtils.GetTrackDeltaTime();
-
-            if (renderFPS != null)
-            {
-                renderFPS.text = string.Format("Render: {0:0.0} ms ({1:0.} fps)", renderDeltaTime, 1000.0f / renderDeltaTime);
-            }
-            if (videoFPS != null)
-            {
-                videoFPS.text = string.Format("Video: {0:0.0} ms ({1:0.} fps)", videoDeltaTime, 1000.0f / videoDeltaTime);
-            }
-            if (trackFPS != null)
-            {
-                trackFPS.text = string.Format("Track:   {0:0.0} ms ({1:0.} fps)", trackDeltaTime, 1000.0f / trackDeltaTime);
-            }
-            if (debugStr != null)
-            {
-                if (DebugUtils.GetDebugStrLength() > 0)
-                {
-                    if (debugStr.preferredHeight >= debugStr.rectTransform.rect.height)
-                        debugStr.text = string.Empty;
-
-                    debugStr.text += DebugUtils.GetDebugStr();
-                    DebugUtils.ClearDebugStr();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the destroy event.
-        /// </summary>
-        void OnDestroy()
-        {
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            webCamTextureToMatHelper.frameMatAcquired -= OnFrameMatAcquired;
-#endif
-            webCamTextureToMatHelper.Dispose();
-            imageOptimizationHelper.Dispose();
-
-            if (rectangleTracker != null)
-                rectangleTracker.Dispose();
-        }
-
-        /// <summary>
-        /// Raises the back button click event.
-        /// </summary>
-        public void OnBackButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
-        }
-
-        /// <summary>
-        /// Raises the play button click event.
-        /// </summary>
-        public void OnPlayButtonClick()
-        {
-            webCamTextureToMatHelper.Play();
-        }
-
-        /// <summary>
-        /// Raises the pause button click event.
-        /// </summary>
-        public void OnPauseButtonClick()
-        {
-            webCamTextureToMatHelper.Pause();
-        }
-
-        /// <summary>
-        /// Raises the stop button click event.
-        /// </summary>
-        public void OnStopButtonClick()
-        {
-            webCamTextureToMatHelper.Stop();
-        }
-
-        /// <summary>
-        /// Raises the change camera button click event.
-        /// </summary>
-        public void OnChangeCameraButtonClick()
-        {
-            webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.IsFrontFacing();
-        }
-
-        /// <summary>
-        /// Raises the enable downscale toggle value changed event.
-        /// </summary>
-        public void OnEnableDownScaleToggleValueChanged()
-        {
-            enableDownScale = enableDownScaleToggle.isOn;
-
-            if (rectangleTracker != null)
-            {
-                lock (rectangleTracker)
-                {
-                    rectangleTracker.Reset();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the use separate detection toggle value changed event.
-        /// </summary>
-        public void OnUseSeparateDetectionToggleValueChanged()
-        {
-            useSeparateDetection = useSeparateDetectionToggle.isOn;
-
-            if (rectangleTracker != null)
-            {
-                lock (rectangleTracker)
-                {
-                    rectangleTracker.Reset();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the display camera image toggle value changed event.
-        /// </summary>
-        public void OnDisplayCameraImageToggleValueChanged()
-        {
-            displayCameraImage = displayCameraImageToggle.isOn;
-        }
-    }
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.SceneManagement;
+using OpenCVForUnity.RectangleTrack;
+using OpenCVForUnity.CoreModule;
+using OpenCVForUnity.ObjdetectModule;
+using OpenCVForUnity.UnityUtils;
+using OpenCVForUnity.UnityUtils.Helper;
+using OpenCVForUnity.ImgprocModule;
+using Rect = OpenCVForUnity.CoreModule.Rect;
+using HoloLensWithOpenCVForUnity.UnityUtils.Helper;
+using HoloLensCameraStream;
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    /// <summary>
+    /// HoloLens Face Detection Example
+    /// An example of detecting face using OpenCVForUnity on Hololens.
+    /// Referring to https://github.com/Itseez/opencv/blob/master/modules/objdetect/src/detection_based_tracker.cpp.
+    /// </summary>
+    [RequireComponent(typeof(HLCameraStreamToMatHelper), typeof(ImageOptimizationHelper))]
+    public class HLFaceDetectionExample : MonoBehaviour
+    {
+        /// <summary>
+        /// Determines if enables the detection.
+        /// </summary>
+        public bool enableDetection = true;
+
+        /// <summary>
+        /// Determines if enable downscale.
+        /// </summary>
+        public bool enableDownScale;
+
+        /// <summary>
+        /// The enable downscale toggle.
+        /// </summary>
+        public Toggle enableDownScaleToggle;
+
+        /// <summary>
+        /// Determines if uses separate detection.
+        /// </summary>
+        public bool useSeparateDetection = false;
+
+        /// <summary>
+        /// The use separate detection toggle.
+        /// </summary>
+        public Toggle useSeparateDetectionToggle;
+
+        /// <summary>
+        /// Determines if displays camera image.
+        /// </summary>
+        public bool displayCameraImage = false;
+
+        /// <summary>
+        /// The display camera image toggle.
+        /// </summary>
+        public Toggle displayCameraImageToggle;
+
+        /// <summary>
+        /// The min detection size ratio.
+        /// </summary>
+        public float minDetectionSizeRatio = 0.07f;
+
+        /// <summary>
+        /// The webcam texture to mat helper.
+        /// </summary>
+        HLCameraStreamToMatHelper webCamTextureToMatHelper;
+
+        /// <summary>
+        /// The image optimization helper.
+        /// </summary>
+        ImageOptimizationHelper imageOptimizationHelper;
+
+        /// <summary>
+        /// The texture.
+        /// </summary>
+        Texture2D texture;
+
+        /// <summary>
+        /// The cascade.
+        /// </summary>
+        CascadeClassifier cascade;
+
+        /// <summary>
+        /// The quad renderer.
+        /// </summary>
+        Renderer quad_renderer;
+
+        /// <summary>
+        /// The detection result.
+        /// </summary>
+        List<Rect> detectionResult = new List<Rect>();
+
+        Scalar COLOR_WHITE = new Scalar(255, 255, 255, 255);
+        Scalar COLOR_GRAY = new Scalar(128, 128, 128, 255);
+
+        Mat grayMat4Thread;
+        CascadeClassifier cascade4Thread;
+        readonly static Queue<Action> ExecuteOnMainThread = new Queue<Action>();
+        System.Object sync = new System.Object();
+
+        bool _isThreadRunning = false;
+        bool isThreadRunning
+        {
+            get
+            {
+                lock (sync)
+                    return _isThreadRunning;
+            }
+            set
+            {
+                lock (sync)
+                    _isThreadRunning = value;
+            }
+        }
+
+        RectangleTracker rectangleTracker;
+        float coeffTrackingWindowSize = 2.0f;
+        float coeffObjectSizeToTrack = 0.85f;
+        List<Rect> detectedObjectsInRegions = new List<Rect>();
+        List<Rect> resultObjects = new List<Rect>();
+
+        bool _isDetecting = false;
+        bool isDetecting
+        {
+            get
+            {
+                lock (sync)
+                    return _isDetecting;
+            }
+            set
+            {
+                lock (sync)
+                    _isDetecting = value;
+            }
+        }
+
+        bool _hasUpdatedDetectionResult = false;
+        bool hasUpdatedDetectionResult
+        {
+            get
+            {
+                lock (sync)
+                    return _hasUpdatedDetectionResult;
+            }
+            set
+            {
+                lock (sync)
+                    _hasUpdatedDetectionResult = value;
+            }
+        }
+
+        bool _isDetectingInFrameArrivedThread = false;
+        bool isDetectingInFrameArrivedThread
+        {
+            get
+            {
+                lock (sync)
+                    return _isDetectingInFrameArrivedThread;
+            }
+            set
+            {
+                lock (sync)
+                    _isDetectingInFrameArrivedThread = value;
+            }
+        }
+
+
+        [HeaderAttribute("Debug")]
+
+        public Text renderFPS;
+        public Text videoFPS;
+        public Text trackFPS;
+        public Text debugStr;
+
+
+        // Use this for initialization
+        protected void Start()
+        {
+            enableDownScaleToggle.isOn = enableDownScale;
+            useSeparateDetectionToggle.isOn = useSeparateDetection;
+            displayCameraImageToggle.isOn = displayCameraImage;
+
+            imageOptimizationHelper = gameObject.GetComponent<ImageOptimizationHelper>();
+            webCamTextureToMatHelper = gameObject.GetComponent<HLCameraStreamToMatHelper>();
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+            webCamTextureToMatHelper.frameMatAcquired += OnFrameMatAcquired;
+#endif
+            webCamTextureToMatHelper.outputColorFormat = WebCamTextureToMatHelper.ColorFormat.GRAY;
+            webCamTextureToMatHelper.Initialize();
+
+            rectangleTracker = new RectangleTracker();
+        }
+
+        /// <summary>
+        /// Raises the web cam texture to mat helper initialized event.
+        /// </summary>
+        public void OnWebCamTextureToMatHelperInitialized()
+        {
+            Debug.Log("OnWebCamTextureToMatHelperInitialized");
+
+            Mat grayMat = webCamTextureToMatHelper.GetMat();
+
+            texture = new Texture2D(grayMat.cols(), grayMat.rows(), TextureFormat.Alpha8, false);
+            texture.wrapMode = TextureWrapMode.Clamp;
+            quad_renderer = gameObject.GetComponent<Renderer>() as Renderer;
+            quad_renderer.sharedMaterial.SetTexture("_MainTex", texture);
+            quad_renderer.sharedMaterial.SetVector("_VignetteOffset", new Vector4(0, 0));
+
+
+            //Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
+
+
+            DebugUtils.AddDebugStr(webCamTextureToMatHelper.outputColorFormat.ToString() + " " + webCamTextureToMatHelper.GetWidth() + " x " + webCamTextureToMatHelper.GetHeight() + " : " + webCamTextureToMatHelper.GetFPS());
+            if (enableDownScale)
+                DebugUtils.AddDebugStr("enableDownScale = true: " + imageOptimizationHelper.downscaleRatio + " / " + webCamTextureToMatHelper.GetWidth() / imageOptimizationHelper.downscaleRatio + " x " + webCamTextureToMatHelper.GetHeight() / imageOptimizationHelper.downscaleRatio);
+
+
+            Matrix4x4 projectionMatrix;
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+            projectionMatrix = webCamTextureToMatHelper.GetProjectionMatrix();
+            quad_renderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
+#else
+            // This value is obtained from PhotoCapture's TryGetProjectionMatrix() method. I do not know whether this method is good.
+            // Please see the discussion of this thread. Https://forums.hololens.com/discussion/782/live-stream-of-locatable-camera-webcam-in-unity
+            projectionMatrix = Matrix4x4.identity;
+            projectionMatrix.m00 = 2.31029f;
+            projectionMatrix.m01 = 0.00000f;
+            projectionMatrix.m02 = 0.09614f;
+            projectionMatrix.m03 = 0.00000f;
+            projectionMatrix.m10 = 0.00000f;
+            projectionMatrix.m11 = 4.10427f;
+            projectionMatrix.m12 = -0.06231f;
+            projectionMatrix.m13 = 0.00000f;
+            projectionMatrix.m20 = 0.00000f;
+            projectionMatrix.m21 = 0.00000f;
+            projectionMatrix.m22 = -1.00000f;
+            projectionMatrix.m23 = 0.00000f;
+            projectionMatrix.m30 = 0.00000f;
+            projectionMatrix.m31 = 0.00000f;
+            projectionMatrix.m32 = -1.00000f;
+            projectionMatrix.m33 = 0.00000f;
+            quad_renderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
+#endif
+
+            quad_renderer.sharedMaterial.SetFloat("_VignetteScale", 0.0f);
+
+
+            cascade = new CascadeClassifier();
+            cascade.load(Utils.getFilePath("objdetect/lbpcascade_frontalface.xml"));
+#if !WINDOWS_UWP || UNITY_EDITOR
+            // "empty" method is not working on the UWP platform.
+            if (cascade.empty())
+            {
+                Debug.LogError("cascade file is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/objdetect/” to “Assets/StreamingAssets/objdetect/” folder. ");
+            }
+#endif
+
+            grayMat4Thread = new Mat();
+            cascade4Thread = new CascadeClassifier();
+            //cascade4Thread.load(Utils.getFilePath("objdetect/haarcascade_frontalface_alt.xml"));
+            cascade4Thread.load(Utils.getFilePath("objdetect/lbpcascade_frontalface.xml"));
+#if !WINDOWS_UWP || UNITY_EDITOR
+            // "empty" method is not working on the UWP platform.
+            if (cascade4Thread.empty())
+            {
+                Debug.LogError("cascade file is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/objdetect/” to “Assets/StreamingAssets/objdetect/” folder. ");
+            }
+#endif
+        }
+
+        /// <summary>
+        /// Raises the web cam texture to mat helper disposed event.
+        /// </summary>
+        public void OnWebCamTextureToMatHelperDisposed()
+        {
+            Debug.Log("OnWebCamTextureToMatHelperDisposed");
+
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+
+            while (isDetectingInFrameArrivedThread)
+            {
+                //Wait detecting stop
+            }
+#endif
+
+            StopThread();
+            lock (ExecuteOnMainThread)
+            {
+                ExecuteOnMainThread.Clear();
+            }
+            hasUpdatedDetectionResult = false;
+            isDetecting = false;
+
+            if (cascade != null)
+                cascade.Dispose();
+
+            if (grayMat4Thread != null)
+                grayMat4Thread.Dispose();
+
+            if (cascade4Thread != null)
+                cascade4Thread.Dispose();
+
+            rectangleTracker.Reset();
+
+            if (debugStr != null)
+            {
+                debugStr.text = string.Empty;
+            }
+            DebugUtils.ClearDebugStr();
+        }
+
+        /// <summary>
+        /// Raises the web cam texture to mat helper error occurred event.
+        /// </summary>
+        /// <param name="errorCode">Error code.</param>
+        public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
+        {
+            Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
+        }
+
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+        public void OnFrameMatAcquired(Mat grayMat, Matrix4x4 projectionMatrix, Matrix4x4 cameraToWorldMatrix, CameraIntrinsics cameraIntrinsics)
+        {
+            isDetectingInFrameArrivedThread = true;
+
+            DebugUtils.VideoTick();
+
+            Mat downScaleMat = null;
+            float DOWNSCALE_RATIO;
+            if (enableDownScale)
+            {
+                downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
+                DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
+            }
+            else
+            {
+                downScaleMat = grayMat;
+                DOWNSCALE_RATIO = 1.0f;
+            }
+
+            Imgproc.equalizeHist(downScaleMat, downScaleMat);
+
+            if (enableDetection && !isDetecting)
+            {
+                isDetecting = true;
+
+                downScaleMat.copyTo(grayMat4Thread);
+
+                System.Threading.Tasks.Task.Run(() =>
+                {
+
+                    isThreadRunning = true;
+
+                    DetectObject(grayMat4Thread, out detectionResult, cascade4Thread);
+
+                    isThreadRunning = false;
+                    OnDetectionDone();
+                });
+            }
+
+            if (!useSeparateDetection)
+            {
+                if (hasUpdatedDetectionResult)
+                {
+                    hasUpdatedDetectionResult = false;
+
+                    lock (rectangleTracker)
+                    {
+                        rectangleTracker.UpdateTrackedObjects(detectionResult);
+                    }
+                }
+
+                lock (rectangleTracker)
+                {
+                    rectangleTracker.GetObjects(resultObjects, true);
+                }
+
+                if (displayCameraImage)
+                {
+                    Imgproc.putText(grayMat, "W:" + grayMat.width() + " H:" + grayMat.height(), new Point(5, grayMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar(255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
+                }
+                else
+                {
+                    // fill all black.
+                    Imgproc.rectangle(grayMat, new Point(0, 0), new Point(grayMat.width(), grayMat.height()), new Scalar(0, 0, 0, 0), -1);
+                }
+
+                // draw face rect.
+                DrawDownScaleFaceRects(grayMat, resultObjects.ToArray(), DOWNSCALE_RATIO, COLOR_WHITE, 6);
+            }
+            else
+            {
+
+                Rect[] rectsWhereRegions;
+
+                if (hasUpdatedDetectionResult)
+                {
+                    hasUpdatedDetectionResult = false;
+
+                    //Enqueue(() =>
+                    //{
+                    //    Debug.Log("process: get rectsWhereRegions were got from detectionResult");
+                    //});
+
+                    lock (rectangleTracker)
+                    {
+                        rectsWhereRegions = detectionResult.ToArray();
+                    }
+                }
+                else
+                {
+                    //Enqueue(() =>
+                    //{
+                    //    Debug.Log("process: get rectsWhereRegions from previous positions");
+                    //});
+
+                    lock (rectangleTracker)
+                    {
+                        rectsWhereRegions = rectangleTracker.CreateCorrectionBySpeedOfRects();
+                    }
+                }
+
+                detectedObjectsInRegions.Clear();
+                int len = rectsWhereRegions.Length;
+                for (int i = 0; i < len; i++)
+                {
+                    DetectInRegion(downScaleMat, rectsWhereRegions[i], detectedObjectsInRegions, cascade);
+                }
+
+                lock (rectangleTracker)
+                {
+                    rectangleTracker.UpdateTrackedObjects(detectedObjectsInRegions);
+                    rectangleTracker.GetObjects(resultObjects, true);
+                }
+
+                if (displayCameraImage)
+                {
+                    Imgproc.putText(grayMat, "W:" + grayMat.width() + " H:" + grayMat.height(), new Point(5, grayMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar(255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
+                }
+                else
+                {
+                    // fill all black.
+                    Imgproc.rectangle(grayMat, new Point(0, 0), new Point(grayMat.width(), grayMat.height()), new Scalar(0, 0, 0, 0), -1);
+                }
+
+                // draw previous rect.
+                DrawDownScaleFaceRects(grayMat, rectsWhereRegions, DOWNSCALE_RATIO, COLOR_GRAY, 1);
+
+                // draw face rect.
+                DrawDownScaleFaceRects(grayMat, resultObjects.ToArray(), DOWNSCALE_RATIO, COLOR_WHITE, 6);
+            }
+
+            DebugUtils.TrackTick();
+
+            Enqueue(() =>
+            {
+                if (!webCamTextureToMatHelper.IsPlaying()) return;
+
+                Utils.matToTexture2D(grayMat, texture);
+                grayMat.Dispose();
+
+                Matrix4x4 worldToCameraMatrix = cameraToWorldMatrix.inverse;
+
+                quad_renderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", worldToCameraMatrix);
+                quad_renderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
+
+                // Position the canvas object slightly in front
+                // of the real world web camera.
+                Vector3 position = cameraToWorldMatrix.GetColumn(3) - cameraToWorldMatrix.GetColumn(2) * 2.2f;
+
+                // Rotate the canvas object so that it faces the user.
+                Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
+
+                gameObject.transform.position = position;
+                gameObject.transform.rotation = rotation;
+
+            });
+
+            isDetectingInFrameArrivedThread = false;
+        }
+
+        private void Update()
+        {
+            lock (ExecuteOnMainThread)
+            {
+                while (ExecuteOnMainThread.Count > 0)
+                {
+                    ExecuteOnMainThread.Dequeue().Invoke();
+                }
+            }
+        }
+
+        private void Enqueue(Action action)
+        {
+            lock (ExecuteOnMainThread)
+            {
+                ExecuteOnMainThread.Enqueue(action);
+            }
+        }
+
+#else
+
+        // Update is called once per frame
+        void Update()
+        {
+            lock (ExecuteOnMainThread)
+            {
+                while (ExecuteOnMainThread.Count > 0)
+                {
+                    ExecuteOnMainThread.Dequeue().Invoke();
+                }
+            }
+
+            if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
+            {
+
+                DebugUtils.VideoTick();
+
+                Mat grayMat = webCamTextureToMatHelper.GetMat();
+
+                Mat downScaleMat = null;
+                float DOWNSCALE_RATIO;
+                if (enableDownScale)
+                {
+                    downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
+                    DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
+                }
+                else
+                {
+                    downScaleMat = grayMat;
+                    DOWNSCALE_RATIO = 1.0f;
+                }
+
+                Imgproc.equalizeHist(downScaleMat, downScaleMat);
+
+                if (enableDetection && !isDetecting)
+                {
+                    isDetecting = true;
+
+                    downScaleMat.copyTo(grayMat4Thread);
+
+                    StartThread(ThreadWorker);
+                }
+
+                if (!useSeparateDetection)
+                {
+                    if (hasUpdatedDetectionResult)
+                    {
+                        hasUpdatedDetectionResult = false;
+
+                        rectangleTracker.UpdateTrackedObjects(detectionResult);
+                    }
+
+                    rectangleTracker.GetObjects(resultObjects, true);
+
+                    if (displayCameraImage)
+                    {
+                        Imgproc.putText(grayMat, "W:" + grayMat.width() + " H:" + grayMat.height(), new Point(5, grayMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar(255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
+                    }
+                    else
+                    {
+                        // fill all black.
+                        Imgproc.rectangle(grayMat, new Point(0, 0), new Point(grayMat.width(), grayMat.height()), new Scalar(0, 0, 0, 0), -1);
+                    }
+
+                    // draw face rect.
+                    DrawDownScaleFaceRects(grayMat, resultObjects.ToArray(), DOWNSCALE_RATIO, COLOR_WHITE, 6);
+                }
+                else
+                {
+
+                    Rect[] rectsWhereRegions;
+
+                    if (hasUpdatedDetectionResult)
+                    {
+                        hasUpdatedDetectionResult = false;
+
+                        //Debug.Log("process: get rectsWhereRegions were got from detectionResult");
+                        rectsWhereRegions = detectionResult.ToArray();
+                    }
+                    else
+                    {
+                        //Debug.Log("process: get rectsWhereRegions from previous positions");
+                        rectsWhereRegions = rectangleTracker.CreateCorrectionBySpeedOfRects();
+                    }
+
+                    detectedObjectsInRegions.Clear();
+                    int len = rectsWhereRegions.Length;
+                    for (int i = 0; i < len; i++)
+                    {
+                        DetectInRegion(downScaleMat, rectsWhereRegions[i], detectedObjectsInRegions, cascade);
+                    }
+
+                    rectangleTracker.UpdateTrackedObjects(detectedObjectsInRegions);
+                    rectangleTracker.GetObjects(resultObjects, true);
+
+                    if (displayCameraImage)
+                    {
+                        Imgproc.putText(grayMat, "W:" + grayMat.width() + " H:" + grayMat.height(), new Point(5, grayMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar(255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
+                    }
+                    else
+                    {
+                        // fill all black.
+                        Imgproc.rectangle(grayMat, new Point(0, 0), new Point(grayMat.width(), grayMat.height()), new Scalar(0, 0, 0, 0), -1);
+                    }
+
+                    // draw previous rect.
+                    DrawDownScaleFaceRects(grayMat, rectsWhereRegions, DOWNSCALE_RATIO, COLOR_GRAY, 1);
+
+                    // draw face rect.
+                    DrawDownScaleFaceRects(grayMat, resultObjects.ToArray(), DOWNSCALE_RATIO, COLOR_WHITE, 6);
+                }
+
+                DebugUtils.TrackTick();
+
+                Utils.matToTexture2D(grayMat, texture);
+            }
+
+            if (webCamTextureToMatHelper.IsPlaying())
+            {
+
+                Matrix4x4 cameraToWorldMatrix = Camera.main.cameraToWorldMatrix; ;
+                Matrix4x4 worldToCameraMatrix = cameraToWorldMatrix.inverse;
+
+                quad_renderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", worldToCameraMatrix);
+
+                // Position the canvas object slightly in front
+                // of the real world web camera.
+                Vector3 position = cameraToWorldMatrix.GetColumn(3) - cameraToWorldMatrix.GetColumn(2) * 2.2f;
+
+                // Rotate the canvas object so that it faces the user.
+                Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
+
+                gameObject.transform.position = position;
+                gameObject.transform.rotation = rotation;
+            }
+        }
+#endif
+
+        private void StartThread(Action action)
+        {
+#if WINDOWS_UWP || (!UNITY_WSA_10_0 && (NET_4_6 || NET_STANDARD_2_0))
+            System.Threading.Tasks.Task.Run(() => action());
+#else
+            ThreadPool.QueueUserWorkItem(_ => action());
+#endif
+        }
+
+        private void StopThread()
+        {
+            if (!isThreadRunning)
+                return;
+
+            while (isThreadRunning)
+            {
+                //Wait threading stop
+            }
+        }
+
+        private void ThreadWorker()
+        {
+            isThreadRunning = true;
+
+            DetectObject(grayMat4Thread, out detectionResult, cascade4Thread);
+
+            lock (ExecuteOnMainThread)
+            {
+                if (ExecuteOnMainThread.Count == 0)
+                {
+                    ExecuteOnMainThread.Enqueue(() =>
+                    {
+                        OnDetectionDone();
+                    });
+                }
+            }
+
+            isThreadRunning = false;
+        }
+
+        private void DetectObject(Mat img, out List<Rect> detectedObjects, CascadeClassifier cascade)
+        {
+            int d = Mathf.Min(img.width(), img.height());
+            d = (int)Mathf.Round(d * minDetectionSizeRatio);
+
+            MatOfRect objects = new MatOfRect();
+            if (cascade != null)
+                cascade.detectMultiScale(img, objects, 1.1, 2, Objdetect.CASCADE_SCALE_IMAGE, new Size(d, d), new Size());
+
+            detectedObjects = objects.toList();
+        }
+
+
+        private void OnDetectionDone()
+        {
+            hasUpdatedDetectionResult = true;
+
+            isDetecting = false;
+        }
+
+        private void DetectInRegion(Mat img, Rect region, List<Rect> detectedObjectsInRegions, CascadeClassifier cascade)
+        {
+            Rect r0 = new Rect(new Point(), img.size());
+            Rect r1 = new Rect(region.x, region.y, region.width, region.height);
+            Rect.inflate(r1, (int)((r1.width * coeffTrackingWindowSize) - r1.width) / 2,
+                (int)((r1.height * coeffTrackingWindowSize) - r1.height) / 2);
+            r1 = Rect.intersect(r0, r1);
+
+            if ((r1.width <= 0) || (r1.height <= 0))
+            {
+                Debug.Log("detectInRegion: Empty intersection");
+                return;
+            }
+
+            int d = Math.Min(region.width, region.height);
+            d = (int)Math.Round(d * coeffObjectSizeToTrack);
+
+            using (MatOfRect tmpobjects = new MatOfRect())
+            using (Mat img1 = new Mat(img, r1)) //subimage for rectangle -- without data copying
+            {
+                cascade.detectMultiScale(img1, tmpobjects, 1.1, 2, 0 | Objdetect.CASCADE_DO_CANNY_PRUNING | Objdetect.CASCADE_SCALE_IMAGE | Objdetect.CASCADE_FIND_BIGGEST_OBJECT, new Size(d, d), new Size());
+
+                Rect[] tmpobjectsArray = tmpobjects.toArray();
+                int len = tmpobjectsArray.Length;
+                for (int i = 0; i < len; i++)
+                {
+                    Rect tmp = tmpobjectsArray[i];
+                    Rect r = new Rect(new Point(tmp.x + r1.x, tmp.y + r1.y), tmp.size());
+
+                    detectedObjectsInRegions.Add(r);
+                }
+            }
+        }
+
+        private void DrawDownScaleFaceRects(Mat img, Rect[] rects, float downscaleRatio, Scalar color, int thickness)
+        {
+            int len = rects.Length;
+            for (int i = 0; i < len; i++)
+            {
+                Rect rect = new Rect(
+                    (int)(rects[i].x * downscaleRatio),
+                    (int)(rects[i].y * downscaleRatio),
+                    (int)(rects[i].width * downscaleRatio),
+                    (int)(rects[i].height * downscaleRatio)
+                );
+                Imgproc.rectangle(img, rect, color, thickness);
+            }
+        }
+
+        void LateUpdate()
+        {
+            DebugUtils.RenderTick();
+            float renderDeltaTime = DebugUtils.GetRenderDeltaTime();
+            float videoDeltaTime = DebugUtils.GetVideoDeltaTime();
+            float trackDeltaTime = DebugUtils.GetTrackDeltaTime();
+
+            if (renderFPS != null)
+            {
+                renderFPS.text = string.Format("Render: {0:0.0} ms ({1:0.} fps)", renderDeltaTime, 1000.0f / renderDeltaTime);
+            }
+            if (videoFPS != null)
+            {
+                videoFPS.text = string.Format("Video: {0:0.0} ms ({1:0.} fps)", videoDeltaTime, 1000.0f / videoDeltaTime);
+            }
+            if (trackFPS != null)
+            {
+                trackFPS.text = string.Format("Track:   {0:0.0} ms ({1:0.} fps)", trackDeltaTime, 1000.0f / trackDeltaTime);
+            }
+            if (debugStr != null)
+            {
+                if (DebugUtils.GetDebugStrLength() > 0)
+                {
+                    if (debugStr.preferredHeight >= debugStr.rectTransform.rect.height)
+                        debugStr.text = string.Empty;
+
+                    debugStr.text += DebugUtils.GetDebugStr();
+                    DebugUtils.ClearDebugStr();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Raises the destroy event.
+        /// </summary>
+        void OnDestroy()
+        {
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+            webCamTextureToMatHelper.frameMatAcquired -= OnFrameMatAcquired;
+#endif
+            webCamTextureToMatHelper.Dispose();
+            imageOptimizationHelper.Dispose();
+
+            if (rectangleTracker != null)
+                rectangleTracker.Dispose();
+        }
+
+        /// <summary>
+        /// Raises the back button click event.
+        /// </summary>
+        public void OnBackButtonClick()
+        {
+            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
+        }
+
+        /// <summary>
+        /// Raises the play button click event.
+        /// </summary>
+        public void OnPlayButtonClick()
+        {
+            webCamTextureToMatHelper.Play();
+        }
+
+        /// <summary>
+        /// Raises the pause button click event.
+        /// </summary>
+        public void OnPauseButtonClick()
+        {
+            webCamTextureToMatHelper.Pause();
+        }
+
+        /// <summary>
+        /// Raises the stop button click event.
+        /// </summary>
+        public void OnStopButtonClick()
+        {
+            webCamTextureToMatHelper.Stop();
+        }
+
+        /// <summary>
+        /// Raises the change camera button click event.
+        /// </summary>
+        public void OnChangeCameraButtonClick()
+        {
+            webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.IsFrontFacing();
+        }
+
+        /// <summary>
+        /// Raises the enable downscale toggle value changed event.
+        /// </summary>
+        public void OnEnableDownScaleToggleValueChanged()
+        {
+            enableDownScale = enableDownScaleToggle.isOn;
+
+            if (rectangleTracker != null)
+            {
+                lock (rectangleTracker)
+                {
+                    rectangleTracker.Reset();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Raises the use separate detection toggle value changed event.
+        /// </summary>
+        public void OnUseSeparateDetectionToggleValueChanged()
+        {
+            useSeparateDetection = useSeparateDetectionToggle.isOn;
+
+            if (rectangleTracker != null)
+            {
+                lock (rectangleTracker)
+                {
+                    rectangleTracker.Reset();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Raises the display camera image toggle value changed event.
+        /// </summary>
+        public void OnDisplayCameraImageToggleValueChanged()
+        {
+            displayCameraImage = displayCameraImageToggle.isOn;
+        }
+    }
 }
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample/HoloLensFaceDetectionExample.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample/HLFaceDetectionExample.cs.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample/HoloLensFaceDetectionExample.cs.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample/HLFaceDetectionExample.cs.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample/HoloLensFaceDetectionExample.unity b/Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample/HLFaceDetectionExample.unity
similarity index 93%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample/HoloLensFaceDetectionExample.unity
rename to Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample/HLFaceDetectionExample.unity
index c4d84b1..55afb97 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample/HoloLensFaceDetectionExample.unity
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample/HLFaceDetectionExample.unity
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample/HoloLensFaceDetectionExample.unity.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample/HLFaceDetectionExample.unity.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionExample/HoloLensFaceDetectionExample.unity.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLFaceDetectionExample/HLFaceDetectionExample.unity.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample/HLPhotoCaptureExample.cs b/Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample/HLPhotoCaptureExample.cs
new file mode 100644
index 0000000..2554d1d
--- /dev/null
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample/HLPhotoCaptureExample.cs
@@ -0,0 +1,281 @@
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.SceneManagement;
+using System.Collections.Generic;
+using OpenCVForUnity.CoreModule;
+using OpenCVForUnity.ObjdetectModule;
+using OpenCVForUnity.UnityUtils;
+using OpenCVForUnity.ImgprocModule;
+using Microsoft.MixedReality.Toolkit.Input;
+using System.Collections;
+using System.Linq;
+
+#if UNITY_2018_2_OR_NEWER
+using UnityEngine.Windows.WebCam;
+using WSAWebCamCameraParameters = UnityEngine.Windows.WebCam.CameraParameters;
+#else
+using UnityEngine.XR.WSA.WebCam;
+using WSAWebCamCameraParameters = UnityEngine.XR.WSA.WebCam.CameraParameters;
+#endif
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    /// <summary>
+    /// HoloLens PhotoCapture Example
+    /// An example of holographic photo blending using the PhotocCapture class on Hololens.  (Air Tap to take a picture)
+    /// Referring to https://github.com/microsoft/OpenXR-Unity-MixedReality-Samples/blob/main/BasicSample/Assets/LocatableCamera/Scripts/LocatableCamera.cs
+    /// </summary>
+    public class HLPhotoCaptureExample : MonoBehaviour
+    {
+        [SerializeField]
+        private Shader textureShader = null;
+
+        [SerializeField]
+        private TextMesh text = null;
+
+        private PhotoCapture photoCaptureObject = null;
+        private Resolution cameraResolution = default(Resolution);
+        private bool isCapturingPhoto, isReadyToCapturePhoto = false;
+        private uint numPhotos = 0;
+
+        private CascadeClassifier cascade;
+        private MatOfRect faces;
+
+        private IEnumerator Start()
+        {
+            faces = new MatOfRect();
+
+            cascade = new CascadeClassifier();
+            cascade.load(Utils.getFilePath("objdetect/haarcascade_frontalface_alt.xml"));
+
+
+            var resolutions = PhotoCapture.SupportedResolutions;
+            if (resolutions == null || resolutions.Count() == 0)
+            {
+                if (text != null)
+                {
+                    text.text = "Resolutions not available. Did you provide web cam access?";
+                }
+                yield return null;
+            }
+
+            cameraResolution = resolutions.OrderByDescending((res) => res.width * res.height).First();
+            PhotoCapture.CreateAsync(false, OnPhotoCaptureCreated);
+
+            if (text != null)
+            {
+                text.text = "Starting camera...";
+            }
+        }
+
+        private void OnDestroy()
+        {
+            isReadyToCapturePhoto = false;
+
+            if (photoCaptureObject != null)
+            {
+                photoCaptureObject.StopPhotoModeAsync(OnPhotoCaptureStopped);
+
+                if (text != null)
+                {
+                    text.text = "Stopping camera...";
+                }
+            }
+
+            if (cascade != null)
+                cascade.Dispose();
+        }
+
+        private void OnPhotoCaptureCreated(PhotoCapture captureObject)
+        {
+            if (text != null)
+            {
+                text.text += "\nPhotoCapture created...";
+            }
+
+            photoCaptureObject = captureObject;
+
+            WSAWebCamCameraParameters cameraParameters = new WSAWebCamCameraParameters(WebCamMode.PhotoMode)
+            {
+                hologramOpacity = 0.0f,
+                cameraResolutionWidth = cameraResolution.width,
+                cameraResolutionHeight = cameraResolution.height,
+                pixelFormat = CapturePixelFormat.BGRA32
+            };
+
+            captureObject.StartPhotoModeAsync(cameraParameters, OnPhotoModeStarted);
+        }
+
+        private void OnPhotoModeStarted(PhotoCapture.PhotoCaptureResult result)
+        {
+            if (result.success)
+            {
+                isReadyToCapturePhoto = true;
+
+                if (text != null)
+                {
+                    text.text = "Ready!\nAir Tap to take a picture.";
+                }
+            }
+            else
+            {
+                isReadyToCapturePhoto = false;
+
+                if (text != null)
+                {
+                    text.text = "Unable to start photo mode!";
+                }
+            }
+        }
+
+        /// <summary>
+        /// Takes a photo and attempts to load it into the scene using its location data.
+        /// </summary>
+        public void TakePhoto()
+        {
+            if (!isReadyToCapturePhoto || isCapturingPhoto)
+            {
+                return;
+            }
+
+            isCapturingPhoto = true;
+
+            if (text != null)
+            {
+                text.text = "Taking picture...";
+            }
+
+            photoCaptureObject.TakePhotoAsync(OnPhotoCaptured);
+        }
+
+        private void OnPhotoCaptured(PhotoCapture.PhotoCaptureResult result, PhotoCaptureFrame photoCaptureFrame)
+        {
+            if (result.success)
+            {
+                if (text != null)
+                {
+                    text.text += "\nTook picture!";
+                }
+
+                GameObject quad = GameObject.CreatePrimitive(PrimitiveType.Quad);
+                quad.name = $"Photo{numPhotos++}";
+                quad.transform.parent = transform;
+
+                float ratio = cameraResolution.height / (float)cameraResolution.width;
+                quad.transform.localScale = new Vector3(2f, 2f * ratio, 1);
+
+                Renderer quadRenderer = quad.GetComponent<Renderer>();
+                quadRenderer.material = new Material(textureShader);
+                Texture2D targetTexture = new Texture2D(cameraResolution.width, cameraResolution.height, TextureFormat.BGRA32, false);
+                photoCaptureFrame.UploadImageDataToTexture(targetTexture);
+
+
+
+                Mat bgraMat = new Mat(targetTexture.height, targetTexture.width, CvType.CV_8UC4);
+                Mat grayMat = new Mat(bgraMat.rows(), bgraMat.cols(), CvType.CV_8UC1);
+
+                // For BGRA or BGR format, use the fastTexture2DToMat method.
+                Utils.fastTexture2DToMat(targetTexture, bgraMat);
+
+                Imgproc.cvtColor(bgraMat, grayMat, Imgproc.COLOR_BGRA2GRAY);
+                Imgproc.equalizeHist(grayMat, grayMat);
+
+                if (cascade != null)
+                    cascade.detectMultiScale(grayMat, faces, 1.1, 2, 2, // TODO: objdetect.CV_HAAR_SCALE_IMAGE
+                        new Size(grayMat.cols() * 0.05, grayMat.rows() * 0.05), new Size());
+
+                OpenCVForUnity.CoreModule.Rect[] rects = faces.toArray();
+                for (int i = 0; i < rects.Length; i++)
+                {
+                    //Debug.Log ("detect faces " + rects [i]);
+                    Imgproc.rectangle(bgraMat, new Point(rects[i].x, rects[i].y), new Point(rects[i].x + rects[i].width, rects[i].y + rects[i].height), new Scalar(255, 0, 0, 255), 4);
+                }
+
+                // draw an edge lines.
+                Imgproc.rectangle(bgraMat, new Point(0, 0), new Point(bgraMat.width(), bgraMat.height()), new Scalar(255, 0, 0, 255), 2);
+
+                Imgproc.putText(bgraMat, targetTexture.format + " W:" + bgraMat.width() + " H:" + bgraMat.height(), new Point(5, bgraMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.5, new Scalar(255, 0, 0, 255), 2, Imgproc.LINE_AA, false);
+
+                // For BGRA or BGR format, use the fastMatToTexture2D method.
+                Utils.fastMatToTexture2D(bgraMat, targetTexture);
+                bgraMat.Dispose();
+                grayMat.Dispose();
+
+
+
+                quadRenderer.sharedMaterial.SetTexture("_MainTex", targetTexture);
+
+                if (photoCaptureFrame.hasLocationData)
+                {
+                    photoCaptureFrame.TryGetCameraToWorldMatrix(out Matrix4x4 cameraToWorldMatrix);
+
+                    Vector3 position = cameraToWorldMatrix.GetColumn(3) - cameraToWorldMatrix.GetColumn(2);
+                    Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
+
+                    photoCaptureFrame.TryGetProjectionMatrix(Camera.main.nearClipPlane, Camera.main.farClipPlane, out Matrix4x4 projectionMatrix);
+
+                    targetTexture.wrapMode = TextureWrapMode.Clamp;
+
+                    quadRenderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", cameraToWorldMatrix.inverse);
+                    quadRenderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
+
+                    quad.transform.position = position;
+                    quad.transform.rotation = rotation;
+
+                    if (text != null)
+                    {
+                        text.text += $"\nPosition: ({position.x}, {position.y}, {position.z})";
+                        text.text += $"\nRotation: ({rotation.x}, {rotation.y}, {rotation.z}, {rotation.w})";
+                    }
+                }
+                else
+                {
+                    if (text != null)
+                    {
+                        text.text += "\nNo location data :(";
+                    }
+                }
+            }
+            else
+            {
+                if (text != null)
+                {
+                    text.text += "\nPicture taking failed: " + result.hResult;
+                }
+            }
+
+            isCapturingPhoto = false;
+        }
+
+        private void OnPhotoCaptureStopped(PhotoCapture.PhotoCaptureResult result)
+        {
+            if (text != null)
+            {
+                text.text = result.success ? "Photo mode stopped." : "Unable to stop photo mode.";
+            }
+
+            photoCaptureObject.Dispose();
+            photoCaptureObject = null;
+        }
+
+        /// <summary>
+        /// Raises the back button click event.
+        /// </summary>
+        public void OnBackButtonClick()
+        {
+            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
+        }
+
+        public void OnTapped(MixedRealityPointerEventData eventData)
+        {
+            // Determine if a Gaze pointer is over a GUI.
+            if (eventData.selectedObject != null && (eventData.selectedObject.GetComponent<Button>() != null || eventData.selectedObject.GetComponent<Toggle>() != null
+                 || eventData.selectedObject.GetComponent<Text>() != null || eventData.selectedObject.GetComponent<Image>() != null))
+            {
+                return;
+            }
+
+            TakePhoto();
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample/HoloLensPhotoCaptureExample.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample/HLPhotoCaptureExample.cs.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample/HoloLensPhotoCaptureExample.cs.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample/HLPhotoCaptureExample.cs.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample/HoloLensPhotoCaptureExample.unity b/Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample/HLPhotoCaptureExample.unity
similarity index 89%
rename from Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample/HoloLensPhotoCaptureExample.unity
rename to Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample/HLPhotoCaptureExample.unity
index 43a6037..fec7263 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample/HoloLensPhotoCaptureExample.unity
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample/HLPhotoCaptureExample.unity
@@ -54,7 +54,7 @@ LightmapSettings:
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+    m_PVREnvironmentReferencePointCount: 2048
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+    m_TrainingDataDestination: TrainingData
+    m_LightProbeSampleCountMultiplier: 4
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@@ -121,77 +130,15 @@ GameObject:
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-  - component: {fileID: 34117365}
-  - component: {fileID: 34117364}
   - component: {fileID: 34117368}
   - component: {fileID: 34117369}
   m_Layer: 0
-  m_Name: PhotoCaptureCanvas
+  m_Name: HLPhotoCaptureExample
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample/HoloLensPhotoCaptureExample.unity.meta b/Assets/HoloLensWithOpenCVForUnityExample/HLPhotoCaptureExample/HLPhotoCaptureExample.unity.meta
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.unity b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.unity
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index ef185ba..0000000
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.unity.meta b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.unity.meta
deleted file mode 100644
index 264d2b5..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensComicFilterExample/HoloLensComicFilterExample.unity.meta
+++ /dev/null
@@ -1,6 +0,0 @@
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample.meta b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample.meta
deleted file mode 100644
index 8786fc2..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample.meta
+++ /dev/null
@@ -1,9 +0,0 @@
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.cs b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.cs
deleted file mode 100644
index 1e9c883..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.cs
+++ /dev/null
@@ -1,846 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Threading;
-using UnityEngine;
-using UnityEngine.UI;
-using UnityEngine.SceneManagement;
-using OpenCVForUnity.RectangleTrack;
-using OpenCVForUnity.CoreModule;
-using OpenCVForUnity.ObjdetectModule;
-using OpenCVForUnity.UnityUtils;
-using OpenCVForUnity.UnityUtils.Helper;
-using OpenCVForUnity.ImgprocModule;
-using Rect = OpenCVForUnity.CoreModule.Rect;
-using HoloLensWithOpenCVForUnity.UnityUtils.Helper;
-using HoloLensCameraStream;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    /// <summary>
-    /// HoloLens Face Detection Overlay Example
-    /// An example of overlay display of face area rectangles using OpenCVForUnity on Hololens.
-    /// Referring to https://github.com/Itseez/opencv/blob/master/modules/objdetect/src/detection_based_tracker.cpp.
-    /// </summary>
-    [RequireComponent(typeof(HololensCameraStreamToMatHelper), typeof(ImageOptimizationHelper))]
-    public class HoloLensFaceDetectionOverlayExample : MonoBehaviour
-    {
-        /// <summary>
-        /// Determines if enables the detection.
-        /// </summary>
-        public bool enableDetection = true;
-
-        /// <summary>
-        /// Determines if enable downscale.
-        /// </summary>
-        public bool enableDownScale;
-
-        /// <summary>
-        /// The enable downscale toggle.
-        /// </summary>
-        public Toggle enableDownScaleToggle;
-
-        /// <summary>
-        /// Determines if uses separate detection.
-        /// </summary>
-        public bool useSeparateDetection = false;
-
-        /// <summary>
-        /// The use separate detection toggle.
-        /// </summary>
-        public Toggle useSeparateDetectionToggle;
-
-        /// <summary>
-        /// The min detection size ratio.
-        /// </summary>
-        public float minDetectionSizeRatio = 0.07f;
-
-        /// <summary>
-        /// The overlay Distance.
-        /// </summary>
-        public float overlayDistance = 2.2f;
-
-        /// <summary>
-        /// The webcam texture to mat helper.
-        /// </summary>
-        HololensCameraStreamToMatHelper webCamTextureToMatHelper;
-
-        /// <summary>
-        /// The image optimization helper.
-        /// </summary>
-        ImageOptimizationHelper imageOptimizationHelper;
-
-        /// <summary>
-        /// The cascade.
-        /// </summary>
-        CascadeClassifier cascade;
-
-        /// <summary>
-        /// The detection result.
-        /// </summary>
-        List<Rect> detectionResult = new List<Rect>();
-
-        Mat grayMat4Thread;
-        CascadeClassifier cascade4Thread;
-        readonly static Queue<Action> ExecuteOnMainThread = new Queue<Action>();
-        System.Object sync = new System.Object();
-
-        bool _isThreadRunning = false;
-        bool isThreadRunning
-        {
-            get
-            {
-                lock (sync)
-                    return _isThreadRunning;
-            }
-            set
-            {
-                lock (sync)
-                    _isThreadRunning = value;
-            }
-        }
-
-        RectangleTracker rectangleTracker;
-        float coeffTrackingWindowSize = 2.0f;
-        float coeffObjectSizeToTrack = 0.85f;
-        List<Rect> detectedObjectsInRegions = new List<Rect>();
-        List<Rect> resultObjects = new List<Rect>();
-
-        bool _isDetecting = false;
-        bool isDetecting
-        {
-            get
-            {
-                lock (sync)
-                    return _isDetecting;
-            }
-            set
-            {
-                lock (sync)
-                    _isDetecting = value;
-            }
-        }
-
-        bool _hasUpdatedDetectionResult = false;
-        bool hasUpdatedDetectionResult
-        {
-            get
-            {
-                lock (sync)
-                    return _hasUpdatedDetectionResult;
-            }
-            set
-            {
-                lock (sync)
-                    _hasUpdatedDetectionResult = value;
-            }
-        }
-
-        bool _isDetectingInFrameArrivedThread = false;
-        bool isDetectingInFrameArrivedThread
-        {
-            get
-            {
-                lock (sync)
-                    return _isDetectingInFrameArrivedThread;
-            }
-            set
-            {
-                lock (sync)
-                    _isDetectingInFrameArrivedThread = value;
-            }
-        }
-
-        Matrix4x4 projectionMatrix;
-        RectOverlay rectOverlay;
-
-
-        [HeaderAttribute("Debug")]
-
-        public Text renderFPS;
-        public Text videoFPS;
-        public Text trackFPS;
-        public Text debugStr;
-
-
-        // Use this for initialization
-        protected void Start()
-        {
-            enableDownScaleToggle.isOn = enableDownScale;
-            useSeparateDetectionToggle.isOn = useSeparateDetection;
-
-            imageOptimizationHelper = gameObject.GetComponent<ImageOptimizationHelper>();
-            webCamTextureToMatHelper = gameObject.GetComponent<HololensCameraStreamToMatHelper>();
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            webCamTextureToMatHelper.frameMatAcquired += OnFrameMatAcquired;
-#endif
-            webCamTextureToMatHelper.outputColorFormat = WebCamTextureToMatHelper.ColorFormat.GRAY;
-            webCamTextureToMatHelper.Initialize();
-
-            rectangleTracker = new RectangleTracker();
-            rectOverlay = gameObject.GetComponent<RectOverlay>();
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper initialized event.
-        /// </summary>
-        public void OnWebCamTextureToMatHelperInitialized()
-        {
-            Debug.Log("OnWebCamTextureToMatHelperInitialized");
-
-            Mat grayMat = webCamTextureToMatHelper.GetMat();
-
-
-            //Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
-
-
-            DebugUtils.AddDebugStr(webCamTextureToMatHelper.GetWidth() + " x " + webCamTextureToMatHelper.GetHeight() + " : " + webCamTextureToMatHelper.GetFPS());
-            if (enableDownScale)
-                DebugUtils.AddDebugStr("enableDownScale = true: " + imageOptimizationHelper.downscaleRatio + " / " + webCamTextureToMatHelper.GetWidth() / imageOptimizationHelper.downscaleRatio + " x " + webCamTextureToMatHelper.GetHeight() / imageOptimizationHelper.downscaleRatio);
-
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            projectionMatrix = webCamTextureToMatHelper.GetProjectionMatrix ();
-#else
-            //This value is obtained from PhotoCapture's TryGetProjectionMatrix() method.I do not know whether this method is good.
-            //Please see the discussion of this thread.Https://forums.hololens.com/discussion/782/live-stream-of-locatable-camera-webcam-in-unity
-            projectionMatrix = Matrix4x4.identity;
-            projectionMatrix.m00 = 2.31029f;
-            projectionMatrix.m01 = 0.00000f;
-            projectionMatrix.m02 = 0.09614f;
-            projectionMatrix.m03 = 0.00000f;
-            projectionMatrix.m10 = 0.00000f;
-            projectionMatrix.m11 = 4.10427f;
-            projectionMatrix.m12 = -0.06231f;
-            projectionMatrix.m13 = 0.00000f;
-            projectionMatrix.m20 = 0.00000f;
-            projectionMatrix.m21 = 0.00000f;
-            projectionMatrix.m22 = -1.00000f;
-            projectionMatrix.m23 = 0.00000f;
-            projectionMatrix.m30 = 0.00000f;
-            projectionMatrix.m31 = 0.00000f;
-            projectionMatrix.m32 = -1.00000f;
-            projectionMatrix.m33 = 0.00000f;
-#endif
-
-            cascade = new CascadeClassifier();
-            cascade.load(Utils.getFilePath("lbpcascade_frontalface.xml"));
-#if !UNITY_WSA_10_0 || UNITY_EDITOR
-            // "empty" method is not working on the UWP platform.
-            if (cascade.empty())
-            {
-                Debug.LogError("cascade file is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. ");
-            }
-#endif
-
-            grayMat4Thread = new Mat();
-            cascade4Thread = new CascadeClassifier();
-            cascade4Thread.load(Utils.getFilePath("haarcascade_frontalface_alt.xml"));
-#if !UNITY_WSA_10_0 || UNITY_EDITOR
-            // "empty" method is not working on the UWP platform.
-            if (cascade4Thread.empty())
-            {
-                Debug.LogError("cascade file is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. ");
-            }
-#endif
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper disposed event.
-        /// </summary>
-        public void OnWebCamTextureToMatHelperDisposed()
-        {
-            Debug.Log("OnWebCamTextureToMatHelperDisposed");
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-
-            while (isDetectingInFrameArrivedThread)
-            {
-                //Wait detecting stop
-            }
-#endif
-
-            StopThread();
-            lock (ExecuteOnMainThread)
-            {
-                ExecuteOnMainThread.Clear();
-            }
-            hasUpdatedDetectionResult = false;
-            isDetecting = false;
-
-            if (cascade != null)
-                cascade.Dispose();
-
-            if (grayMat4Thread != null)
-                grayMat4Thread.Dispose();
-
-            if (cascade4Thread != null)
-                cascade4Thread.Dispose();
-
-            rectangleTracker.Reset();
-
-            if (debugStr != null)
-            {
-                debugStr.text = string.Empty;
-            }
-            DebugUtils.ClearDebugStr();
-        }
-
-        /// <summary>
-        /// Raises the web cam texture to mat helper error occurred event.
-        /// </summary>
-        /// <param name="errorCode">Error code.</param>
-        public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
-        {
-            Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
-        }
-
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-        public void OnFrameMatAcquired(Mat grayMat, Matrix4x4 projectionMatrix, Matrix4x4 cameraToWorldMatrix, CameraIntrinsics cameraIntrinsics)
-        {
-            isDetectingInFrameArrivedThread = true;
-
-            DebugUtils.VideoTick();
-
-            Mat downScaleMat = null;
-            float DOWNSCALE_RATIO;
-            if (enableDownScale)
-            {
-                downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
-                DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
-            }
-            else
-            {
-                downScaleMat = grayMat;
-                DOWNSCALE_RATIO = 1.0f;
-            }
-
-            Imgproc.equalizeHist(downScaleMat, downScaleMat);
-
-            if (enableDetection && !isDetecting)
-            {
-                isDetecting = true;
-
-                downScaleMat.copyTo(grayMat4Thread);
-
-                System.Threading.Tasks.Task.Run(() =>
-                {
-
-                    isThreadRunning = true;
-
-                    DetectObject(grayMat4Thread, out detectionResult, cascade4Thread);
-
-                    isThreadRunning = false;
-                    OnDetectionDone();
-                });
-            }
-
-
-            Rect[] rects;
-            if (!useSeparateDetection)
-            {
-                if (hasUpdatedDetectionResult)
-                {
-                    hasUpdatedDetectionResult = false;
-
-                    lock (rectangleTracker)
-                    {
-                        rectangleTracker.UpdateTrackedObjects(detectionResult);
-                    }
-                }
-
-                lock (rectangleTracker)
-                {
-                    rectangleTracker.GetObjects(resultObjects, true);
-                }
-                rects = resultObjects.ToArray();
-
-            }
-            else
-            {
-
-                Rect[] rectsWhereRegions;
-
-                if (hasUpdatedDetectionResult)
-                {
-                    hasUpdatedDetectionResult = false;
-
-                    //Enqueue(() =>
-                    //{
-                    //    Debug.Log("process: get rectsWhereRegions were got from detectionResult");
-                    //});
-
-                    lock (rectangleTracker)
-                    {
-                        rectsWhereRegions = detectionResult.ToArray();
-                    }
-                }
-                else
-                {
-                    //Enqueue(() =>
-                    //{
-                    //    Debug.Log("process: get rectsWhereRegions from previous positions");
-                    //});
-
-                    lock (rectangleTracker)
-                    {
-                        rectsWhereRegions = rectangleTracker.CreateCorrectionBySpeedOfRects();
-                    }
-                }
-
-                detectedObjectsInRegions.Clear();
-                int len = rectsWhereRegions.Length;
-                for (int i = 0; i < len; i++)
-                {
-                    DetectInRegion(downScaleMat, rectsWhereRegions[i], detectedObjectsInRegions, cascade);
-                }
-
-                lock (rectangleTracker)
-                {
-                    rectangleTracker.UpdateTrackedObjects(detectedObjectsInRegions);
-                    rectangleTracker.GetObjects(resultObjects, true);
-                }
-
-                rects = resultObjects.ToArray();
-            }
-
-            if (enableDownScale)
-            {
-                int len = rects.Length;
-                for (int i = 0; i < len; i++)
-                {
-                    Rect rect = rects[i];
-
-                    // restore to original size rect
-                    rect.x = (int)(rect.x * DOWNSCALE_RATIO);
-                    rect.y = (int)(rect.y * DOWNSCALE_RATIO);
-                    rect.width = (int)(rect.width * DOWNSCALE_RATIO);
-                    rect.height = (int)(rect.height * DOWNSCALE_RATIO);
-                }
-            }
-
-            DebugUtils.TrackTick();
-
-            Enqueue(() =>
-            {
-                if (!webCamTextureToMatHelper.IsPlaying()) return;
-
-                // draw face rect.
-                DrawRects(rects, grayMat.width(), grayMat.height());
-                grayMat.Dispose();
-
-                Vector3 ccCameraSpacePos = UnProjectVector(projectionMatrix, new Vector3(0.0f, 0.0f, overlayDistance));
-                Vector3 tlCameraSpacePos = UnProjectVector(projectionMatrix, new Vector3(-overlayDistance, overlayDistance, overlayDistance));
-
-                //position
-                Vector3 position = cameraToWorldMatrix.MultiplyPoint3x4(ccCameraSpacePos);
-                gameObject.transform.position = position;
-
-                //scale
-                Vector3 scale = new Vector3(Mathf.Abs(tlCameraSpacePos.x - ccCameraSpacePos.x) * 2, Mathf.Abs(tlCameraSpacePos.y - ccCameraSpacePos.y) * 2, 1);
-                gameObject.transform.localScale = scale;
-
-                // Rotate the canvas object so that it faces the user.
-                Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
-                gameObject.transform.rotation = rotation;
-
-                rectOverlay.UpdateOverlayTransform(gameObject.transform);
-
-            });
-
-            isDetectingInFrameArrivedThread = false;
-        }
-
-        private void Update()
-        {
-            lock (ExecuteOnMainThread)
-            {
-                while (ExecuteOnMainThread.Count > 0)
-                {
-                    ExecuteOnMainThread.Dequeue().Invoke();
-                }
-            }
-        }
-
-        private void Enqueue(Action action)
-        {
-            lock (ExecuteOnMainThread)
-            {
-                ExecuteOnMainThread.Enqueue(action);
-            }
-        }
-
-#else
-
-        // Update is called once per frame
-        void Update()
-        {
-            lock (ExecuteOnMainThread)
-            {
-                while (ExecuteOnMainThread.Count > 0)
-                {
-                    ExecuteOnMainThread.Dequeue().Invoke();
-                }
-            }
-
-            if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
-            {
-                DebugUtils.VideoTick();
-
-                Mat grayMat = webCamTextureToMatHelper.GetMat();
-
-                Mat downScaleMat = null;
-                float DOWNSCALE_RATIO;
-                if (enableDownScale)
-                {
-                    downScaleMat = imageOptimizationHelper.GetDownScaleMat(grayMat);
-                    DOWNSCALE_RATIO = imageOptimizationHelper.downscaleRatio;
-                }
-                else
-                {
-                    downScaleMat = grayMat;
-                    DOWNSCALE_RATIO = 1.0f;
-                }
-
-                Imgproc.equalizeHist(downScaleMat, downScaleMat);
-
-                if (enableDetection && !isDetecting)
-                {
-                    isDetecting = true;
-
-                    downScaleMat.copyTo(grayMat4Thread);
-
-                    StartThread(ThreadWorker);
-                }
-
-                Rect[] rects;
-                if (!useSeparateDetection)
-                {
-                    if (hasUpdatedDetectionResult)
-                    {
-                        hasUpdatedDetectionResult = false;
-
-                        rectangleTracker.UpdateTrackedObjects(detectionResult);
-                    }
-
-                    rectangleTracker.GetObjects(resultObjects, true);
-
-                    rects = resultObjects.ToArray();
-                }
-                else
-                {
-
-                    Rect[] rectsWhereRegions;
-
-                    if (hasUpdatedDetectionResult)
-                    {
-                        hasUpdatedDetectionResult = false;
-
-                        //Debug.Log("process: get rectsWhereRegions were got from detectionResult");
-                        rectsWhereRegions = detectionResult.ToArray();
-                    }
-                    else
-                    {
-                        //Debug.Log("process: get rectsWhereRegions from previous positions");
-                        rectsWhereRegions = rectangleTracker.CreateCorrectionBySpeedOfRects();
-                    }
-
-                    detectedObjectsInRegions.Clear();
-                    int len = rectsWhereRegions.Length;
-                    for (int i = 0; i < len; i++)
-                    {
-                        DetectInRegion(downScaleMat, rectsWhereRegions[i], detectedObjectsInRegions, cascade);
-                    }
-
-                    rectangleTracker.UpdateTrackedObjects(detectedObjectsInRegions);
-                    rectangleTracker.GetObjects(resultObjects, true);
-
-                    rects = resultObjects.ToArray();
-                }
-
-                if (enableDownScale)
-                {
-                    int len = rects.Length;
-                    for (int i = 0; i < len; i++)
-                    {
-                        Rect rect = rects[i];
-
-                        // restore to original size rect
-                        rect.x = (int)(rect.x * DOWNSCALE_RATIO);
-                        rect.y = (int)(rect.y * DOWNSCALE_RATIO);
-                        rect.width = (int)(rect.width * DOWNSCALE_RATIO);
-                        rect.height = (int)(rect.height * DOWNSCALE_RATIO);
-                    }
-                }
-
-                // draw face rect.
-                DrawRects(rects, grayMat.width(), grayMat.height());
-
-                DebugUtils.TrackTick();
-            }
-
-            if (webCamTextureToMatHelper.IsPlaying())
-            {
-
-                Matrix4x4 cameraToWorldMatrix = Camera.main.cameraToWorldMatrix; ;
-
-                Vector3 ccCameraSpacePos = UnProjectVector(projectionMatrix, new Vector3(0.0f, 0.0f, overlayDistance));
-                Vector3 tlCameraSpacePos = UnProjectVector(projectionMatrix, new Vector3(-overlayDistance, overlayDistance, overlayDistance));
-
-                //position
-                Vector3 position = cameraToWorldMatrix.MultiplyPoint3x4(ccCameraSpacePos);
-                gameObject.transform.position = position;
-
-                //scale
-                Vector3 scale = new Vector3(Mathf.Abs(tlCameraSpacePos.x - ccCameraSpacePos.x) * 2, Mathf.Abs(tlCameraSpacePos.y - ccCameraSpacePos.y) * 2, 1);
-                gameObject.transform.localScale = scale;
-
-                // Rotate the canvas object so that it faces the user.
-                Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
-                gameObject.transform.rotation = rotation;
-
-                rectOverlay.UpdateOverlayTransform(gameObject.transform);
-            }
-        }
-
-#endif
-
-        private Vector3 UnProjectVector(Matrix4x4 proj, Vector3 to)
-        {
-            Vector3 from = new Vector3(0, 0, 0);
-            var axsX = proj.GetRow(0);
-            var axsY = proj.GetRow(1);
-            var axsZ = proj.GetRow(2);
-            from.z = to.z / axsZ.z;
-            from.y = (to.y - (from.z * axsY.z)) / axsY.y;
-            from.x = (to.x - (from.z * axsX.z)) / axsX.x;
-            return from;
-        }
-
-        private void DrawRects(Rect[] rects, float imageWidth, float imageHeight)
-        {
-            UnityEngine.Rect[] overlayRects = new UnityEngine.Rect[rects.Length];
-
-            for (int i = 0; i < rects.Length; i++)
-            {
-                overlayRects[i] = new UnityEngine.Rect(rects[i].x / imageWidth
-                    , rects[i].y / imageHeight
-                    , rects[i].width / imageWidth
-                    , rects[i].height / imageHeight);
-            }
-            rectOverlay.DrawRects(overlayRects);
-        }
-
-        private void StartThread(Action action)
-        {
-#if WINDOWS_UWP || (!UNITY_WSA_10_0 && (NET_4_6 || NET_STANDARD_2_0))
-            System.Threading.Tasks.Task.Run(() => action());
-#else
-            ThreadPool.QueueUserWorkItem(_ => action());
-#endif
-        }
-
-        private void StopThread()
-        {
-            if (!isThreadRunning)
-                return;
-
-            while (isThreadRunning)
-            {
-                //Wait threading stop
-            }
-        }
-
-        private void ThreadWorker()
-        {
-            isThreadRunning = true;
-
-            DetectObject(grayMat4Thread, out detectionResult, cascade4Thread);
-
-            lock (ExecuteOnMainThread)
-            {
-                if (ExecuteOnMainThread.Count == 0)
-                {
-                    ExecuteOnMainThread.Enqueue(() =>
-                    {
-                        OnDetectionDone();
-                    });
-                }
-            }
-
-            isThreadRunning = false;
-        }
-
-        private void DetectObject(Mat img, out List<Rect> detectedObjects, CascadeClassifier cascade)
-        {
-            int d = Mathf.Min(img.width(), img.height());
-            d = (int)Mathf.Round(d * minDetectionSizeRatio);
-
-            MatOfRect objects = new MatOfRect();
-            if (cascade != null)
-                cascade.detectMultiScale(img, objects, 1.1, 2, Objdetect.CASCADE_SCALE_IMAGE, new Size(d, d), new Size());
-
-            detectedObjects = objects.toList();
-        }
-
-        private void OnDetectionDone()
-        {
-            hasUpdatedDetectionResult = true;
-
-            isDetecting = false;
-        }
-
-        private void DetectInRegion(Mat img, Rect region, List<Rect> detectedObjectsInRegions, CascadeClassifier cascade)
-        {
-            Rect r0 = new Rect(new Point(), img.size());
-            Rect r1 = new Rect(region.x, region.y, region.width, region.height);
-            Rect.inflate(r1, (int)((r1.width * coeffTrackingWindowSize) - r1.width) / 2,
-                (int)((r1.height * coeffTrackingWindowSize) - r1.height) / 2);
-            r1 = Rect.intersect(r0, r1);
-
-            if ((r1.width <= 0) || (r1.height <= 0))
-            {
-                Debug.Log("detectInRegion: Empty intersection");
-                return;
-            }
-
-            int d = Math.Min(region.width, region.height);
-            d = (int)Math.Round(d * coeffObjectSizeToTrack);
-
-            using (MatOfRect tmpobjects = new MatOfRect())
-            using (Mat img1 = new Mat(img, r1)) //subimage for rectangle -- without data copying
-            {
-                cascade.detectMultiScale(img1, tmpobjects, 1.1, 2, 0 | Objdetect.CASCADE_DO_CANNY_PRUNING | Objdetect.CASCADE_SCALE_IMAGE | Objdetect.CASCADE_FIND_BIGGEST_OBJECT, new Size(d, d), new Size());
-
-                Rect[] tmpobjectsArray = tmpobjects.toArray();
-                int len = tmpobjectsArray.Length;
-                for (int i = 0; i < len; i++)
-                {
-                    Rect tmp = tmpobjectsArray[i];
-                    Rect r = new Rect(new Point(tmp.x + r1.x, tmp.y + r1.y), tmp.size());
-
-                    detectedObjectsInRegions.Add(r);
-                }
-            }
-        }
-
-        void LateUpdate()
-        {
-            DebugUtils.RenderTick();
-            float renderDeltaTime = DebugUtils.GetRenderDeltaTime();
-            float videoDeltaTime = DebugUtils.GetVideoDeltaTime();
-            float trackDeltaTime = DebugUtils.GetTrackDeltaTime();
-
-            if (renderFPS != null)
-            {
-                renderFPS.text = string.Format("Render: {0:0.0} ms ({1:0.} fps)", renderDeltaTime, 1000.0f / renderDeltaTime);
-            }
-            if (videoFPS != null)
-            {
-                videoFPS.text = string.Format("Video: {0:0.0} ms ({1:0.} fps)", videoDeltaTime, 1000.0f / videoDeltaTime);
-            }
-            if (trackFPS != null)
-            {
-                trackFPS.text = string.Format("Track:   {0:0.0} ms ({1:0.} fps)", trackDeltaTime, 1000.0f / trackDeltaTime);
-            }
-            if (debugStr != null)
-            {
-                if (DebugUtils.GetDebugStrLength() > 0)
-                {
-                    if (debugStr.preferredHeight >= debugStr.rectTransform.rect.height)
-                        debugStr.text = string.Empty;
-
-                    debugStr.text += DebugUtils.GetDebugStr();
-                    DebugUtils.ClearDebugStr();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the destroy event.
-        /// </summary>
-        void OnDestroy()
-        {
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            webCamTextureToMatHelper.frameMatAcquired -= OnFrameMatAcquired;
-#endif
-            webCamTextureToMatHelper.Dispose();
-            imageOptimizationHelper.Dispose();
-
-            if (rectangleTracker != null)
-                rectangleTracker.Dispose();
-        }
-
-        /// <summary>
-        /// Raises the back button click event.
-        /// </summary>
-        public void OnBackButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
-        }
-
-        /// <summary>
-        /// Raises the play button click event.
-        /// </summary>
-        public void OnPlayButtonClick()
-        {
-            webCamTextureToMatHelper.Play();
-        }
-
-        /// <summary>
-        /// Raises the pause button click event.
-        /// </summary>
-        public void OnPauseButtonClick()
-        {
-            webCamTextureToMatHelper.Pause();
-        }
-
-        /// <summary>
-        /// Raises the stop button click event.
-        /// </summary>
-        public void OnStopButtonClick()
-        {
-            webCamTextureToMatHelper.Stop();
-        }
-
-        /// <summary>
-        /// Raises the change camera button click event.
-        /// </summary>
-        public void OnChangeCameraButtonClick()
-        {
-            webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.IsFrontFacing();
-        }
-
-        /// <summary>
-        /// Raises the enable downscale toggle value changed event.
-        /// </summary>
-        public void OnEnableDownScaleToggleValueChanged()
-        {
-            enableDownScale = enableDownScaleToggle.isOn;
-
-            if (rectangleTracker != null)
-            {
-                lock (rectangleTracker)
-                {
-                    rectangleTracker.Reset();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Raises the use separate detection toggle value changed event.
-        /// </summary>
-        public void OnUseSeparateDetectionToggleValueChanged()
-        {
-            useSeparateDetection = useSeparateDetectionToggle.isOn;
-
-            if (rectangleTracker != null)
-            {
-                lock (rectangleTracker)
-                {
-                    rectangleTracker.Reset();
-                }
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.cs.meta
deleted file mode 100644
index f0ae301..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/HoloLensFaceDetectionOverlayExample.cs.meta
+++ /dev/null
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deleted file mode 100644
index c42e02a..0000000
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deleted file mode 100644
index f53b733..0000000
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deleted file mode 100644
index 906727b..0000000
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deleted file mode 100644
index e789457..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Materials/WierFrameShader.shader
+++ /dev/null
@@ -1,78 +0,0 @@
-// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
-
-    Shader "Custom/WireFrame"
-    {
-    Properties
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-    Fallback "Vertex Colored", 1
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-    
\ No newline at end of file
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deleted file mode 100644
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deleted file mode 100644
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Materials/WireFrameMaterial.mat.meta b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Materials/WireFrameMaterial.mat.meta
deleted file mode 100644
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deleted file mode 100644
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deleted file mode 100644
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deleted file mode 100644
index 7f563f2..0000000
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/ObjectPool.cs b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/ObjectPool.cs
deleted file mode 100644
index 2b53095..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/ObjectPool.cs
+++ /dev/null
@@ -1,139 +0,0 @@
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    public class ObjectPool : MonoBehaviour
-    {
-        public GameObject prefab;
-        public int maxCount = 100;
-        public int prepareCount = 0;
-
-        [SerializeField]
-        private int interval = 1;
-
-        private List<GameObject> pooledObjectList = new List<GameObject>();
-        private IEnumerator removeObjectCheckCoroutine;
-
-        void OnEnable()
-        {
-            if (interval > 0){
-                removeObjectCheckCoroutine = RemoveObjectCheck();
-                StartCoroutine(removeObjectCheckCoroutine);
-            }
-        }
-
-        void OnDisable()
-        {
-            if (removeObjectCheckCoroutine != null){
-                StopCoroutine(removeObjectCheckCoroutine);
-                removeObjectCheckCoroutine = null;
-            }
-        }
-
-        void OnDestroy()
-        {
-            DestroyAllObjects ();
-        }
-
-        public int Interval
-        {
-            get
-            {
-                return interval;
-            }
-            set
-            {
-                if (interval != value)
-                {
-                    interval = value;
-
-                    if (removeObjectCheckCoroutine != null){
-                        StopCoroutine(removeObjectCheckCoroutine);
-                        removeObjectCheckCoroutine = null;
-                    }
-                    if (interval > 0){
-                        removeObjectCheckCoroutine = RemoveObjectCheck();
-                        StartCoroutine(removeObjectCheckCoroutine);
-                    }
-                }
-            }
-        }
-
-        public GameObject GetInstance()
-        {
-            return GetInstance(transform);
-        }
-
-        public GameObject GetInstance(Transform parent)
-        {
-            if (prefab == null){
-                Debug.LogWarning("prefab object is not set.");
-                return null;
-            }
-
-            pooledObjectList.RemoveAll((obj) => obj == null);
-
-            foreach (GameObject obj in pooledObjectList)
-            {
-                if (obj.activeSelf == false)
-                {
-                    obj.SetActive(true);
-                    return obj;
-                }
-            }
-
-            if (pooledObjectList.Count < maxCount)
-            {
-                GameObject obj = (GameObject)GameObject.Instantiate(prefab);
-                obj.SetActive(true);
-                obj.transform.SetParent (parent, false);
-                pooledObjectList.Add(obj);
-                return obj;
-            }
-
-            return null;
-        }
-
-        IEnumerator RemoveObjectCheck()
-        {
-            while (true)
-            {
-                RemoveObject(prepareCount);
-                yield return new WaitForSeconds(interval);
-            }
-        }
-
-        public void RemoveObject(int max)
-        {
-            if (pooledObjectList.Count > max)
-            {
-                
-                int needRemoveCount = pooledObjectList.Count - max;
-                foreach (GameObject obj in pooledObjectList.ToArray())
-                {
-                    if (needRemoveCount == 0)
-                    {
-                        break;
-                    }
-                    if (obj.activeSelf == false)
-                    {
-                        pooledObjectList.Remove(obj);
-                        Destroy(obj);
-                        needRemoveCount--;
-                    }
-                }
-            }
-        }
-
-        public void DestroyAllObjects ()
-        {
-            foreach (var obj in pooledObjectList)
-            {
-                Destroy(obj);
-            }
-            pooledObjectList.Clear();
-        }
-    }
-}
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/ObjectPool.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/ObjectPool.cs.meta
deleted file mode 100644
index 16f6e18..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/ObjectPool.cs.meta
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectOverlay.cs b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectOverlay.cs
deleted file mode 100644
index 90cfae1..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectOverlay.cs
+++ /dev/null
@@ -1,150 +0,0 @@
-using System;
-using UnityEngine;
-using System.Collections.Generic;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    public class RectOverlay : MonoBehaviour
-    {
-        public int interval = 1;
-        public int poolSize = 50;
-        
-        [SerializeField]
-        private GameObject _baseObject;
-        public GameObject baseObject
-        {
-            get {
-                return _baseObject;
-            }
-            set {
-                _baseObject = value;
-                SetBaseObject(_baseObject);
-            }
-        }
-        
-        public float width
-        {
-            get {
-                return targetWidth;
-            }
-        }
-        
-        public float height
-        {
-            get {
-                return targetHeight;
-            }
-        }
-            
-        protected Transform targetTransform;
-        protected float targetWidth = 0;
-        protected float targetHeight = 0;
-        protected Transform overlayTransform;
-        protected ObjectPool objectPool;
-
-        void Awake()
-        {
-            Initialize("RectOverlay");
-        }
-
-        void OnDestroy()
-        {
-            overlayTransform = null;
-            targetTransform = null;
-            targetWidth = 0;
-            targetHeight = 0;
-            if(objectPool != null)
-            {
-                Destroy(objectPool.gameObject);
-                objectPool = null;
-            }
-        }
-
-        protected GameObject GetPoolObject(Transform parent)
-        {
-            if(objectPool == null) return null;
-            
-            GameObject newObj = objectPool.GetInstance(parent);
-            if(newObj != null){
-                newObj.transform.SetParent (parent, false);
-                return newObj;
-            }else{
-                return null;
-            }
-        }
-        
-        protected virtual void Initialize(String name)
-        {
-            GameObject overlay = new GameObject(name);
-
-            overlayTransform = overlay.transform;
-            overlayTransform.parent = gameObject.transform.parent;
-            
-            if(_baseObject != null)
-                SetBaseObject (_baseObject);
-        }
-
-        protected virtual void SetBaseObject (GameObject obj)
-        {
-            if (obj.GetComponent<RectQuad>() == null)
-            {
-                Debug.LogWarning("Object is not RectQuad.");
-                return;
-            }
-            
-            if(objectPool != null){
-                Destroy(objectPool);
-            }
-            
-            objectPool = overlayTransform.gameObject.AddComponent<ObjectPool>();
-            objectPool.prefab = obj;
-            objectPool.maxCount = poolSize;
-            objectPool.prepareCount = (int)poolSize / 2;
-            objectPool.Interval = interval;
-        }
-
-        public virtual void UpdateOverlayTransform(Transform targetTransform)
-        {
-            if (targetTransform == null)
-            {
-                this.targetTransform = null;
-                return;
-            }
-                
-            targetWidth = targetTransform.localScale.x;
-            targetHeight = targetTransform.localScale.y;
-            this.targetTransform = targetTransform;
-            overlayTransform.localPosition = targetTransform.localPosition;
-            overlayTransform.localRotation = targetTransform.localRotation;
-            overlayTransform.localScale = targetTransform.localScale;
-        }
-
-        public void DrawRects(UnityEngine.Rect[] rects)
-        {
-            if (rects == null)
-                throw new ArgumentNullException("rects");
-
-            if (targetTransform == null) return;
-
-            ResetRects();
-
-            foreach (UnityEngine.Rect rect in rects)
-            {
-                GameObject poolObject = GetPoolObject(overlayTransform);
-                if (poolObject == null) return;
-
-                var rectTransform = poolObject.transform;
-                rectTransform.localPosition = new Vector3(rect.x + rect.width / 2 -0.5f, 0.5f - rect.y - rect.height / 2, 0);
-                rectTransform.localScale = new Vector3(rect.width, rect.height, 1);
-            }
-        }
-
-        public void ResetRects()
-        {
-            foreach (Transform child in overlayTransform)
-            {
-                child.gameObject.SetActive(false);
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectOverlay.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectOverlay.cs.meta
deleted file mode 100644
index ce35d00..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectOverlay.cs.meta
+++ /dev/null
@@ -1,12 +0,0 @@
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-guid: 870b5855d58b2ad448d3b0c144be9933
-timeCreated: 1485890794
-licenseType: Free
-MonoImporter:
-  serializedVersion: 2
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectQuad.cs b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectQuad.cs
deleted file mode 100644
index b880625..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectQuad.cs
+++ /dev/null
@@ -1,64 +0,0 @@
-using System;
-using UnityEngine;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    [RequireComponent(typeof(MeshRenderer), typeof(MeshFilter), typeof(MeshCollider))]
-    public class RectQuad : MonoBehaviour
-    {
-        public MeshFilter meshFilter
-        {
-            get { return _meshFilter; }
-        }
-        private MeshFilter _meshFilter;
-
-        public MeshRenderer meshRenderer
-        {
-            get { return _meshRenderer; }
-        }
-        private MeshRenderer _meshRenderer;
-
-        public MeshCollider meshCollider
-        {
-            get { return _meshCollider; }
-        }
-        private MeshCollider _meshCollider;
-
-        public int id
-        {
-            get { return _id; }
-            set { _id = value; }
-        }
-        private int _id = 0;
-
-        public Material material
-        {
-            get { return _material; }
-        }
-        private Material _material;
-
-        void Awake()
-        {
-            _meshFilter = this.GetComponent<MeshFilter>();
-            _meshRenderer = this.GetComponent<MeshRenderer>();
-            _meshCollider = this.GetComponent<MeshCollider>();
-
-            if (_meshRenderer.material == null)
-                throw new Exception("Material does not exist.");
-
-            _material = _meshRenderer.material;
-            _meshRenderer.sortingOrder = 32767;
-        }
-
-        void OnDestroy(){
-            if(_meshFilter != null && _meshFilter.mesh != null){
-                DestroyImmediate(_meshFilter.mesh);
-            }
-            if(_meshRenderer != null && _meshRenderer.materials != null){
-                foreach(var m in _meshRenderer.materials){
-                    DestroyImmediate(m);
-                }
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectQuad.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectQuad.cs.meta
deleted file mode 100644
index 8e66cf7..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensFaceDetectionOverlayExample/Overlay/RectQuad.cs.meta
+++ /dev/null
@@ -1,12 +0,0 @@
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deleted file mode 100644
index d6562df..0000000
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+++ /dev/null
@@ -1,108 +0,0 @@
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deleted file mode 100644
index 9159219..0000000
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deleted file mode 100644
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample/HoloLensPhotoCaptureExample.cs b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample/HoloLensPhotoCaptureExample.cs
deleted file mode 100644
index 41826a9..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensPhotoCaptureExample/HoloLensPhotoCaptureExample.cs
+++ /dev/null
@@ -1,234 +0,0 @@
-using UnityEngine;
-using UnityEngine.UI;
-using UnityEngine.SceneManagement;
-using System.Collections.Generic;
-using OpenCVForUnity.CoreModule;
-using OpenCVForUnity.ObjdetectModule;
-using OpenCVForUnity.UnityUtils;
-using OpenCVForUnity.ImgprocModule;
-using Microsoft.MixedReality.Toolkit.Input;
-
-using UnityEngine.XR.WSA.WebCam;
-using WSAWebCamCameraParameters = UnityEngine.XR.WSA.WebCam.CameraParameters;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    /// <summary>
-    /// HoloLens PhotoCapture Example
-    /// An example of holographic photo blending using the PhotocCapture class on Hololens. (Air Tap to take a picture)
-    /// Referring to https://forum.unity3d.com/threads/holographic-photo-blending-with-photocapture.416023/.
-    /// </summary>
-    public class HoloLensPhotoCaptureExample : MonoBehaviour
-    {
-        GameObject m_Canvas = null;
-        Renderer m_CanvasRenderer = null;
-        PhotoCapture m_PhotoCaptureObj;
-        WSAWebCamCameraParameters m_CameraParameters;
-        bool m_CapturingPhoto = false;
-        Texture2D m_Texture = null;
-
-        bool isPhotoModeRunning = false;
-
-        /// <summary>
-        /// The rgba mat.
-        /// </summary>
-        Mat rgbaMat;
-
-        /// <summary>
-        /// The gray mat.
-        /// </summary>
-        Mat grayMat;
-
-        /// <summary>
-        /// The cascade.
-        /// </summary>
-        CascadeClassifier cascade;
-
-        /// <summary>
-        /// The faces.
-        /// </summary>
-        MatOfRect faces;
-
-        /// <summary>
-        /// The colors.
-        /// </summary>
-        Color32[] colors;
-
-        protected void Start()
-        {
-            m_Canvas = GameObject.Find("PhotoCaptureCanvas");
-            m_CanvasRenderer = m_Canvas.GetComponent<Renderer>() as Renderer;
-            m_CanvasRenderer.enabled = false;
-
-            Initialize();
-        }
-
-        void Initialize()
-        {
-            Debug.Log("Initializing...");
-            List<Resolution> resolutions = new List<Resolution>(PhotoCapture.SupportedResolutions);
-            Resolution selectedResolution = resolutions[1];
-
-            foreach (var item in resolutions)
-            {
-                Debug.Log("resolution width " + item.width + " height " + item.height);
-            }
-
-            m_CameraParameters = new WSAWebCamCameraParameters(WebCamMode.PhotoMode);
-            m_CameraParameters.cameraResolutionWidth = selectedResolution.width;
-            m_CameraParameters.cameraResolutionHeight = selectedResolution.height;
-            m_CameraParameters.hologramOpacity = 0.0f;
-            m_CameraParameters.pixelFormat = CapturePixelFormat.BGRA32;
-
-            m_Texture = new Texture2D(selectedResolution.width, selectedResolution.height, TextureFormat.BGRA32, false);
-
-
-            rgbaMat = new Mat(m_Texture.height, m_Texture.width, CvType.CV_8UC4);
-            colors = new Color32[rgbaMat.cols() * rgbaMat.rows()];
-            grayMat = new Mat(rgbaMat.rows(), rgbaMat.cols(), CvType.CV_8UC1);
-
-            faces = new MatOfRect();
-
-            cascade = new CascadeClassifier();
-            cascade.load(Utils.getFilePath("haarcascade_frontalface_alt.xml"));
-
-
-            PhotoCapture.CreateAsync(false, OnCreatedPhotoCaptureObject);
-        }
-
-        void OnCreatedPhotoCaptureObject(PhotoCapture captureObject)
-        {
-            m_PhotoCaptureObj = captureObject;
-            m_PhotoCaptureObj.StartPhotoModeAsync(m_CameraParameters, OnStartPhotoMode);
-        }
-
-        void OnStartPhotoMode(PhotoCapture.PhotoCaptureResult result)
-        {
-            isPhotoModeRunning = true;
-
-            Debug.Log("Ready!");
-            Debug.Log("Air Tap to take a picture.");
-        }
-
-        public void OnTapped(MixedRealityPointerEventData eventData)
-        {
-            Debug.Log("OnTapped!");
-
-            // Determine if a Gaze pointer is over a GUI.
-            if (eventData.selectedObject != null && (eventData.selectedObject.GetComponent<Button>() != null || eventData.selectedObject.GetComponent<Toggle>() != null
-                 || eventData.selectedObject.GetComponent<Text>() != null || eventData.selectedObject.GetComponent<Image>() != null))
-            {
-                return;
-            }
-
-            if (!isPhotoModeRunning || m_CapturingPhoto)
-            {
-                return;
-            }
-
-            m_CanvasRenderer.enabled = false;
-            m_CapturingPhoto = true;
-            Debug.Log("Taking picture...");
-            m_PhotoCaptureObj.TakePhotoAsync(OnPhotoCaptured);
-        }
-
-        void OnPhotoCaptured(PhotoCapture.PhotoCaptureResult result, PhotoCaptureFrame photoCaptureFrame)
-        {
-
-            Matrix4x4 cameraToWorldMatrix;
-            photoCaptureFrame.TryGetCameraToWorldMatrix(out cameraToWorldMatrix);
-            Matrix4x4 worldToCameraMatrix = cameraToWorldMatrix.inverse;
-
-            Matrix4x4 projectionMatrix;
-            photoCaptureFrame.TryGetProjectionMatrix(out projectionMatrix);
-
-            photoCaptureFrame.UploadImageDataToTexture(m_Texture);
-
-
-            Utils.texture2DToMat(m_Texture, rgbaMat);
-
-            Imgproc.cvtColor(rgbaMat, grayMat, Imgproc.COLOR_RGBA2GRAY);
-            Imgproc.equalizeHist(grayMat, grayMat);
-
-            // fill all black.
-            //Imgproc.rectangle (rgbaMat, new Point (0, 0), new Point (rgbaMat.width (), rgbaMat.height ()), new Scalar (0, 0, 0, 0), -1);
-            // draw an edge lines.
-            Imgproc.rectangle(rgbaMat, new Point(0, 0), new Point(rgbaMat.width(), rgbaMat.height()), new Scalar(255, 0, 0, 255), 2);
-            // draw a diagonal line.
-            //Imgproc.line (rgbaMat, new Point (0, 0), new Point (rgbaMat.cols (), rgbaMat.rows ()), new Scalar (255, 0, 0, 255));
-
-            if (cascade != null)
-                cascade.detectMultiScale(grayMat, faces, 1.1, 2, 2, // TODO: objdetect.CV_HAAR_SCALE_IMAGE
-                    new Size(grayMat.cols() * 0.05, grayMat.rows() * 0.05), new Size());
-
-            OpenCVForUnity.CoreModule.Rect[] rects = faces.toArray();
-            for (int i = 0; i < rects.Length; i++)
-            {
-                //Debug.Log ("detect faces " + rects [i]);
-                Imgproc.rectangle(rgbaMat, new Point(rects[i].x, rects[i].y), new Point(rects[i].x + rects[i].width, rects[i].y + rects[i].height), new Scalar(255, 0, 0, 255), 2);
-            }
-
-            Imgproc.putText(rgbaMat, "W:" + rgbaMat.width() + " H:" + rgbaMat.height() + " SO:" + Screen.orientation, new Point(5, rgbaMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.5, new Scalar(0, 255, 0, 255), 2, Imgproc.LINE_AA, false);
-
-            Utils.matToTexture2D(rgbaMat, m_Texture, colors);
-
-
-            m_Texture.wrapMode = TextureWrapMode.Clamp;
-
-            m_CanvasRenderer.enabled = true;
-            m_CanvasRenderer.sharedMaterial.SetTexture("_MainTex", m_Texture);
-            m_CanvasRenderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", worldToCameraMatrix);
-            m_CanvasRenderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
-            m_CanvasRenderer.sharedMaterial.SetVector("_VignetteOffset", new Vector4(0, 0));
-            m_CanvasRenderer.sharedMaterial.SetFloat("_VignetteScale", 0.0f);
-
-            // Position the canvas object slightly in front
-            // of the real world web camera.
-            Vector3 position = cameraToWorldMatrix.GetColumn(3) - cameraToWorldMatrix.GetColumn(2) * 2.2f;
-
-            // Rotate the canvas object so that it faces the user.
-            Quaternion rotation = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
-
-            m_Canvas.transform.position = position;
-            m_Canvas.transform.rotation = rotation;
-
-            Debug.Log("Took picture!");
-            Debug.Log("projectionMatrix:\n" + projectionMatrix.ToString());
-            m_CapturingPhoto = false;
-        }
-
-        void OnStopPhotoMode(PhotoCapture.PhotoCaptureResult result)
-        {
-            Debug.Log("StopPhotoMode!");
-            m_PhotoCaptureObj.Dispose();
-
-            isPhotoModeRunning = false;
-        }
-
-        /// <summary>
-        /// Raises the destroy event.
-        /// </summary>
-        void OnDestroy()
-        {
-            if (m_PhotoCaptureObj != null)
-                m_PhotoCaptureObj.StopPhotoModeAsync(OnStopPhotoMode);
-
-            if (rgbaMat != null)
-                rgbaMat.Dispose();
-
-            if (grayMat != null)
-                grayMat.Dispose();
-
-            if (cascade != null)
-                cascade.Dispose();
-        }
-
-        /// <summary>
-        /// Raises the back button click event.
-        /// </summary>
-        public void OnBackButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
-        }
-    }
-}
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensWithOpenCVForUnityExample.cs b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensWithOpenCVForUnityExample.cs
index 51b1a23..156ad95 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensWithOpenCVForUnityExample.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensWithOpenCVForUnityExample.cs
@@ -1,108 +1,115 @@
-using UnityEngine;
-using System.Collections;
-using UnityEngine.UI;
-using UnityEngine.SceneManagement;
-using OpenCVForUnity.CoreModule;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    /// <summary>
-    /// HoloLensWithOpenCVForUnity Example
-    /// </summary>
-    public class HoloLensWithOpenCVForUnityExample : MonoBehaviour
-    {
-        public Text exampleTitle;
-        public Text versionInfo;
-        public ScrollRect scrollRect;
-        static float verticalNormalizedPosition = 1f;
-
-        // Use this for initialization
-        protected void Start()
-        {
-            exampleTitle.text = "HoloLensWithOpenCVForUnity Example " + Application.version;
-
-            versionInfo.text = Core.NATIVE_LIBRARY_NAME + " " + OpenCVForUnity.UnityUtils.Utils.getVersion() + " (" + Core.VERSION + ")";
-            versionInfo.text += " / UnityEditor " + Application.unityVersion;
-            versionInfo.text += " / ";
-
-#if UNITY_EDITOR
-            versionInfo.text += "Editor";
-#elif UNITY_STANDALONE_WIN
-            versionInfo.text += "Windows";
-#elif UNITY_STANDALONE_OSX
-            versionInfo.text += "Mac OSX";
-#elif UNITY_STANDALONE_LINUX
-            versionInfo.text += "Linux";
-#elif UNITY_ANDROID
-            versionInfo.text += "Android";
-#elif UNITY_IOS
-            versionInfo.text += "iOS";
-#elif UNITY_WSA
-            versionInfo.text += "WSA";
-#elif UNITY_WEBGL
-            versionInfo.text += "WebGL";
-#endif
-            versionInfo.text += " ";
-#if ENABLE_MONO
-            versionInfo.text += "Mono";
-#elif ENABLE_IL2CPP
-            versionInfo.text += "IL2CPP";
-#elif ENABLE_DOTNET
-            versionInfo.text += ".NET";
-#endif
-
-            scrollRect.verticalNormalizedPosition = verticalNormalizedPosition;
-        }
-
-        // Update is called once per frame
-        void Update()
-        {
-
-        }
-
-        public void OnScrollRectValueChanged()
-        {
-            verticalNormalizedPosition = scrollRect.verticalNormalizedPosition;
-        }
-
-
-        public void OnShowLicenseButtonClick()
-        {
-            SceneManager.LoadScene("ShowLicense");
-        }
-
-        public void OnHoloLensPhotoCaptureExampleButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensPhotoCaptureExample");
-        }
-
-        public void OnHoloLensComicFilterExampleButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensComicFilterExample");
-        }
-
-        public void OnHoloLensFaceDetectionExampleButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensFaceDetectionExample");
-        }
-
-        public void OnHoloLensFaceDetectionOverlayExampleButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensFaceDetectionOverlayExample");
-        }
-
-        public void OnHoloLensArUcoExampleButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensArUcoExample");
-        }
-
-        public void OnHoloLensArUcoCameraCalibrationExampleButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensArUcoCameraCalibrationExample");
-        }
-        public void OnHoloLensCameraIntrinsicsCheckerButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensCameraIntrinsicsChecker");
-        }
-    }
+using UnityEngine;
+using System.Collections;
+using UnityEngine.UI;
+using UnityEngine.SceneManagement;
+using OpenCVForUnity.CoreModule;
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    /// <summary>
+    /// HoloLensWithOpenCVForUnity Example
+    /// </summary>
+    public class HoloLensWithOpenCVForUnityExample : MonoBehaviour
+    {
+        public Text exampleTitle;
+        public Text versionInfo;
+        public ScrollRect scrollRect;
+        static float verticalNormalizedPosition = 1f;
+
+        // Use this for initialization
+        protected void Start()
+        {
+            exampleTitle.text = "HoloLensWithOpenCVForUnity Example " + Application.version;
+
+            versionInfo.text = Core.NATIVE_LIBRARY_NAME + " " + OpenCVForUnity.UnityUtils.Utils.getVersion() + " (" + Core.VERSION + ")";
+            versionInfo.text += " / UnityEditor " + Application.unityVersion;
+            versionInfo.text += " / ";
+
+#if UNITY_EDITOR
+            versionInfo.text += "Editor";
+#elif UNITY_STANDALONE_WIN
+            versionInfo.text += "Windows";
+#elif UNITY_STANDALONE_OSX
+            versionInfo.text += "Mac OSX";
+#elif UNITY_STANDALONE_LINUX
+            versionInfo.text += "Linux";
+#elif UNITY_ANDROID
+            versionInfo.text += "Android";
+#elif UNITY_IOS
+            versionInfo.text += "iOS";
+#elif UNITY_WSA
+            versionInfo.text += "WSA";
+#elif UNITY_WEBGL
+            versionInfo.text += "WebGL";
+#endif
+            versionInfo.text += " ";
+#if ENABLE_MONO
+            versionInfo.text += "Mono";
+#elif ENABLE_IL2CPP
+            versionInfo.text += "IL2CPP";
+#elif ENABLE_DOTNET
+            versionInfo.text += ".NET";
+#endif
+
+            versionInfo.text += " / ";
+
+#if XR_PLUGIN_WINDOWSMR
+            versionInfo.text += "XR_PLUGIN_WINDOWSMR";
+#elif XR_PLUGIN_OPENXR
+            versionInfo.text += "XR_PLUGIN_OPENXR";
+#elif BUILTIN_XR
+            versionInfo.text += "BUILTIN_XR";
+#else
+            versionInfo.text += "XR system unknown";
+#endif
+
+            scrollRect.verticalNormalizedPosition = verticalNormalizedPosition;
+        }
+
+        // Update is called once per frame
+        void Update()
+        {
+
+        }
+
+        public void OnScrollRectValueChanged()
+        {
+            verticalNormalizedPosition = scrollRect.verticalNormalizedPosition;
+        }
+
+
+        public void OnShowLicenseButtonClick()
+        {
+            SceneManager.LoadScene("ShowLicense");
+        }
+
+        public void OnHLPhotoCaptureExampleButtonClick()
+        {
+            SceneManager.LoadScene("HLPhotoCaptureExample");
+        }
+
+        public void OnHLCameraStreamToMatHelperExampleButtonClick()
+        {
+            SceneManager.LoadScene("HLCameraStreamToMatHelperExample");
+        }
+
+        public void OnHLFaceDetectionExampleButtonClick()
+        {
+            SceneManager.LoadScene("HLFaceDetectionExample");
+        }
+
+        public void OnHLArUcoExampleButtonClick()
+        {
+            SceneManager.LoadScene("HLArUcoExample");
+        }
+
+        public void OnHLArUcoCameraCalibrationExampleButtonClick()
+        {
+            SceneManager.LoadScene("HLArUcoCameraCalibrationExample");
+        }
+        public void OnHLCameraIntrinsicsCheckerButtonClick()
+        {
+            SceneManager.LoadScene("HLCameraIntrinsicsChecker");
+        }
+    }
 }
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensWithOpenCVForUnityExample.unity b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensWithOpenCVForUnityExample.unity
index bf188ed..431b484 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/HoloLensWithOpenCVForUnityExample.unity
+++ b/Assets/HoloLensWithOpenCVForUnityExample/HoloLensWithOpenCVForUnityExample.unity
@@ -54,7 +54,7 @@ LightmapSettings:
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     m_AtlasSize: 1024
@@ -62,6 +62,7 @@ LightmapSettings:
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     m_LightmapsBakeMode: 1
@@ -76,10 +77,16 @@ LightmapSettings:
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+    m_PVREnvironmentSampleCount: 500
+    m_PVREnvironmentReferencePointCount: 2048
+    m_PVRFilteringMode: 2
+    m_PVRDenoiserTypeDirect: 0
+    m_PVRDenoiserTypeIndirect: 0
+    m_PVRDenoiserTypeAO: 0
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     m_PVRFilterTypeIndirect: 0
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-    m_PVRFilteringMode: 1
+    m_PVREnvironmentMIS: 0
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@@ -87,7 +94,9 @@ LightmapSettings:
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     m_PVRFilteringAtrousPositionSigmaIndirect: 2
     m_PVRFilteringAtrousPositionSigmaAO: 1
-    m_ShowResolutionOverlay: 1
+    m_ExportTrainingData: 0
+    m_TrainingDataDestination: TrainingData
+    m_LightProbeSampleCountMultiplier: 4
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-  m_Script: {fileID: -765806418, guid: f5f67c52d1564df4a8936ccd202a3bd8, type: 3}
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   m_Name: 
   m_EditorClassIdentifier: 
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+  m_Maskable: 1
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@@ -179,6 +189,7 @@ MonoBehaviour:
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+  m_PixelsPerUnitMultiplier: 1
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 CanvasRenderer:
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@@ -203,7 +214,7 @@ GameObject:
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   - component: {fileID: 130009890}
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-  m_Name: HoloLensFaceDetectionExampleButton
+  m_Name: HLFaceDetectionExampleButton
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     m_HighlightedTrigger: Highlighted
     m_PressedTrigger: Pressed
+    m_SelectedTrigger: Highlighted
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@@ -293,7 +307,7 @@ MonoBehaviour:
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@@ -331,6 +346,7 @@ MonoBehaviour:
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diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendGrayscale_material.mat b/Assets/HoloLensWithOpenCVForUnityExample/Materials/HolographicImageBlend.mat
similarity index 81%
rename from Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendGrayscale_material.mat
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index 257135c..58b84a5 100644
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similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlend_material.mat.meta
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similarity index 78%
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   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_Name: quad_material
-  m_Shader: {fileID: 10752, guid: 0000000000000000f000000000000000, type: 0}
+  m_Name: HolographicImageBlendGrayscale
+  m_Shader: {fileID: 4800000, guid: 382bccdeb39c8b34abf8eb555b63dc2e, type: 3}
   m_ShaderKeywords: 
   m_LightmapFlags: 5
   m_EnableInstancingVariants: 0
@@ -20,10 +20,11 @@ Material:
     serializedVersion: 3
     m_TexEnvs:
     - _MainTex:
-        m_Texture: {fileID: 2800000, guid: e266aedc629209a4196966ac4bf20d68, type: 3}
+        m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
         m_Offset: {x: 0, y: 0}
     m_Floats:
+    - _FlipY: 0
     - _VignetteScale: 0
     m_Colors:
     - _Color: {r: 1, g: 1, b: 1, a: 1}
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendGrayscale_material.mat.meta b/Assets/HoloLensWithOpenCVForUnityExample/Materials/HolographicImageBlendGrayscale.mat.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendGrayscale_material.mat.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/Materials/HolographicImageBlendGrayscale.mat.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlend_material.mat b/Assets/HoloLensWithOpenCVForUnityExample/Materials/TextureSinglePass.mat
similarity index 85%
rename from Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlend_material.mat
rename to Assets/HoloLensWithOpenCVForUnityExample/Materials/TextureSinglePass.mat
index e6eaeba..5270215 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlend_material.mat
+++ b/Assets/HoloLensWithOpenCVForUnityExample/Materials/TextureSinglePass.mat
@@ -7,8 +7,8 @@ Material:
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_Name: holographicImageBlend_material
-  m_Shader: {fileID: 4800000, guid: 5ea4faa0446148445b06b0b0a453f5ec, type: 3}
+  m_Name: TextureSinglePass
+  m_Shader: {fileID: 4800000, guid: 31835514b8863184783d3d14e978aa95, type: 3}
   m_ShaderKeywords: 
   m_LightmapFlags: 5
   m_EnableInstancingVariants: 0
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/quad_material.mat.meta b/Assets/HoloLensWithOpenCVForUnityExample/Materials/TextureSinglePass.mat.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/Materials/quad_material.mat.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/Materials/TextureSinglePass.mat.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/quadGrayscale_material.mat b/Assets/HoloLensWithOpenCVForUnityExample/Materials/TextureSinglePassGrayscale.mat
similarity index 86%
rename from Assets/HoloLensWithOpenCVForUnityExample/Materials/quadGrayscale_material.mat
rename to Assets/HoloLensWithOpenCVForUnityExample/Materials/TextureSinglePassGrayscale.mat
index 17507cc..b091415 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/Materials/quadGrayscale_material.mat
+++ b/Assets/HoloLensWithOpenCVForUnityExample/Materials/TextureSinglePassGrayscale.mat
@@ -7,8 +7,8 @@ Material:
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_Name: quadGrayscale_material
-  m_Shader: {fileID: 4800000, guid: 8c80e077702481e4785a2b78da273469, type: 3}
+  m_Name: TextureSinglePassGrayscale
+  m_Shader: {fileID: 4800000, guid: f4b0fa5b2ab2dbb4c8fd6950056dd3a7, type: 3}
   m_ShaderKeywords: 
   m_LightmapFlags: 5
   m_EnableInstancingVariants: 0
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/quadGrayscale_material.mat.meta b/Assets/HoloLensWithOpenCVForUnityExample/Materials/TextureSinglePassGrayscale.mat.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/Materials/quadGrayscale_material.mat.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/Materials/TextureSinglePassGrayscale.mat.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/grayscaleShader.shader b/Assets/HoloLensWithOpenCVForUnityExample/Materials/grayscaleShader.shader
deleted file mode 100644
index 00f8751..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/Materials/grayscaleShader.shader
+++ /dev/null
@@ -1,41 +0,0 @@
-Shader "Unlit/GreyScaleShader" {
-    Properties{
-        _MainTex("Texture", 2D) = "white" { }
-    }
-        SubShader{
-            Pass {
-
-                CGPROGRAM
-                #pragma vertex vert
-                #pragma fragment frag
-
-                #include "UnityCG.cginc"
-
-                sampler2D _MainTex;
-
-                struct v2f {
-                    float4  pos : SV_POSITION;
-                    float2  uv : TEXCOORD0;
-                };
-
-                float4 _MainTex_ST;
-
-                v2f vert(appdata_base v)
-                {
-                    v2f o;
-                    o.pos = UnityObjectToClipPos(v.vertex);
-                    o.uv = TRANSFORM_TEX(v.texcoord, _MainTex);
-                    return o;
-                }
-
-                fixed4 frag(v2f i) : COLOR
-                {
-                    float texcol_a = tex2D(_MainTex, i.uv).a;
-                    return fixed4(texcol_a, texcol_a, texcol_a, 1.0f);
-                }
-
-                ENDCG
-            }
-    }
-        Fallback "VertexLit"
-}
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/grayscaleShader.shader.meta b/Assets/HoloLensWithOpenCVForUnityExample/Materials/grayscaleShader.shader.meta
deleted file mode 100644
index 47d1aef..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/Materials/grayscaleShader.shader.meta
+++ /dev/null
@@ -1,9 +0,0 @@
-fileFormatVersion: 2
-guid: 8c80e077702481e4785a2b78da273469
-timeCreated: 1484969656
-licenseType: Free
-ShaderImporter:
-  defaultTextures: []
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendGrayscaleShader.shader b/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendGrayscaleShader.shader
deleted file mode 100644
index 08d0674..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendGrayscaleShader.shader
+++ /dev/null
@@ -1,94 +0,0 @@
-// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
-
-Shader "AR/HolographicImageBlendGrayscaleShader"
-{
-    // Referring to https://forum.unity3d.com/threads/holographic-photo-blending-with-photocapture.416023/.
-
-    Properties
-    {
-        _MainTex ("Texture", 2D) = "white" {}
-        _VignetteScale ("Vignette Scale", RANGE(0,2)) = 0
-        _VignetteOffset ("Vignette Offset" , Vector) = (0,0,0,0)
-    }
-    SubShader
-    {
-        Tags { "RenderType"="Opaque" }
-        LOD 100
- 
-        Pass
-        {
-            CGPROGRAM
-            #pragma vertex vert
-            #pragma fragment frag
- 
-            #include "UnityCG.cginc"
- 
-            struct appdata
-            {
-                float4 vertex : POSITION;
-            };
- 
-            struct v2f
-            {
-                float4 vertexPositionInProjectionSpace : SV_POSITION;
-                float2 uv : TEXCOORD0;
-                float4 vertexInProjectionSpace : TEXCOORD1;
-            };
- 
-            sampler2D _MainTex;
-            float4x4 _WorldToCameraMatrix;
-            float4x4 _CameraProjectionMatrix;
-            float _VignetteScale;
-            float4 _VignetteOffset;
- 
-            v2f vert (appdata v)
-            {
-                v2f o;
-                o.vertexPositionInProjectionSpace = UnityObjectToClipPos(v.vertex);
- 
-                // Calculate the vertex position in world space.
-                float4 vertexPositionInWorldSpace = mul(unity_ObjectToWorld, float4(v.vertex.xyz,1));
-                // Now take the world space vertex position and transform it so that
-                // it is relative to the physical web camera on the HoloLens.
-                float4 vertexPositionInCameraSpace = mul(_WorldToCameraMatrix, float4(vertexPositionInWorldSpace.xyz,1));
- 
-                // Convert our camera relative vertex into clip space.
-                o.vertexInProjectionSpace = mul(_CameraProjectionMatrix, float4(vertexPositionInCameraSpace.xyz, 1.0));
- 
-                return o;
-            }
- 
-            fixed4 frag (v2f i) : SV_Target
-            {
-                // Transform the vertex into normalized coordinate space.  Basically
-                // we want to map where our vertex should be on the screen into the -1 to 1 range
-                // for both the x and y axes.
-                float2 signedUV = i.vertexInProjectionSpace.xy / i.vertexInProjectionSpace.w;
- 
-                // The HoloLens uses an additive display so the color black will
-                // be transparent.  If the texture is smaller than the canvas, color the extra
-                // area on the canvas black so it will be transparent on the HoloLens.
-                if(abs(signedUV.x) > 1.0 || abs(signedUV.y) > 1.0)
-                {
-                    return fixed4( 0.0, 0.0, 0.0, 0.0);
-                }
- 
-                // Currently our signedUV's x and y coordinates will fall between -1 and 1.
-                // We need to map this range from 0 to 1 so that we can sample our texture.
-                float2 uv = signedUV * 0.5 + float2(0.5, 0.5);
-                float texcol_a = tex2D(_MainTex, uv).a;
-                fixed4 finalColor = fixed4(texcol_a, texcol_a, texcol_a, 1.0f);
- 
-                // Finally add a circular vignette effect starting from the center
-                // of the image.
-                signedUV.x = signedUV.x + _VignetteOffset.x*2;
-                signedUV.y = signedUV.y + _VignetteOffset.y*2;
-                finalColor *= 1.0 -(length(signedUV) * _VignetteScale);
- 
-                return finalColor;
-            }
-
-            ENDCG
-        }
-    }
-}
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendGrayscaleShader.shader.meta b/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendGrayscaleShader.shader.meta
deleted file mode 100644
index 471ec6a..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendGrayscaleShader.shader.meta
+++ /dev/null
@@ -1,9 +0,0 @@
-fileFormatVersion: 2
-guid: b31aa24f8b8045b479ee2194b93a28f4
-timeCreated: 1484969656
-licenseType: Free
-ShaderImporter:
-  defaultTextures: []
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendShader.shader b/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendShader.shader
deleted file mode 100644
index 8318c20..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendShader.shader
+++ /dev/null
@@ -1,92 +0,0 @@
-// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
-
-Shader "AR/HolographicImageBlendShader"
-{
-    // Referring to https://forum.unity3d.com/threads/holographic-photo-blending-with-photocapture.416023/.
-
-    Properties
-    {
-        _MainTex ("Texture", 2D) = "white" {}
-        _VignetteScale ("Vignette Scale", RANGE(0,2)) = 0
-        _VignetteOffset ("Vignette Offset" , Vector) = (0,0,0,0)
-    }
-    SubShader
-    {
-        Tags { "RenderType"="Opaque" }
-        LOD 100
- 
-        Pass
-        {
-            CGPROGRAM
-            #pragma vertex vert
-            #pragma fragment frag
- 
-            #include "UnityCG.cginc"
- 
-            struct appdata
-            {
-                float4 vertex : POSITION;
-            };
- 
-            struct v2f
-            {
-                float4 vertexPositionInProjectionSpace : SV_POSITION;
-                float2 uv : TEXCOORD0;
-                float4 vertexInProjectionSpace : TEXCOORD1;
-            };
- 
-            sampler2D _MainTex;
-            float4x4 _WorldToCameraMatrix;
-            float4x4 _CameraProjectionMatrix;
-            float _VignetteScale;
-            float4 _VignetteOffset;
- 
-            v2f vert (appdata v)
-            {
-                v2f o;
-                o.vertexPositionInProjectionSpace = UnityObjectToClipPos(v.vertex);
- 
-                // Calculate the vertex position in world space.
-                float4 vertexPositionInWorldSpace = mul(unity_ObjectToWorld, float4(v.vertex.xyz,1));
-                // Now take the world space vertex position and transform it so that
-                // it is relative to the physical web camera on the HoloLens.
-                float4 vertexPositionInCameraSpace = mul(_WorldToCameraMatrix, float4(vertexPositionInWorldSpace.xyz,1));
- 
-                // Convert our camera relative vertex into clip space.
-                o.vertexInProjectionSpace = mul(_CameraProjectionMatrix, float4(vertexPositionInCameraSpace.xyz, 1.0));
- 
-                return o;
-            }
- 
-            fixed4 frag (v2f i) : SV_Target
-            {
-                // Transform the vertex into normalized coordinate space.  Basically
-                // we want to map where our vertex should be on the screen into the -1 to 1 range
-                // for both the x and y axes.
-                float2 signedUV = i.vertexInProjectionSpace.xy / i.vertexInProjectionSpace.w;
- 
-                // The HoloLens uses an additive display so the color black will
-                // be transparent.  If the texture is smaller than the canvas, color the extra
-                // area on the canvas black so it will be transparent on the HoloLens.
-                if(abs(signedUV.x) > 1.0 || abs(signedUV.y) > 1.0)
-                {
-                    return fixed4( 0.0, 0.0, 0.0, 0.0);
-                }
- 
-                // Currently our signedUV's x and y coordinates will fall between -1 and 1.
-                // We need to map this range from 0 to 1 so that we can sample our texture.
-                float2 uv = signedUV * 0.5 + float2(0.5, 0.5);
-                fixed4 finalColor = tex2D(_MainTex, uv);
- 
-                // Finally add a circular vignette effect starting from the center
-                // of the image.
-                signedUV.x = signedUV.x + _VignetteOffset.x*2;
-                signedUV.y = signedUV.y + _VignetteOffset.y*2;
-                finalColor *= 1.0 -(length(signedUV) * _VignetteScale);
- 
-                return finalColor;
-            }
-            ENDCG
-        }
-    }
-}
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendShader.shader.meta b/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendShader.shader.meta
deleted file mode 100644
index 821d8bb..0000000
--- a/Assets/HoloLensWithOpenCVForUnityExample/Materials/holographicImageBlendShader.shader.meta
+++ /dev/null
@@ -1,9 +0,0 @@
-fileFormatVersion: 2
-guid: 5ea4faa0446148445b06b0b0a453f5ec
-timeCreated: 1484969656
-licenseType: Free
-ShaderImporter:
-  defaultTextures: []
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/RectangleTracker.cs b/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/RectangleTracker.cs
index d9c40e3..0f7d479 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/RectangleTracker.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/RectangleTracker.cs
@@ -1,522 +1,522 @@
-using OpenCVForUnity.CoreModule;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using UnityEngine;
-using Rect = OpenCVForUnity.CoreModule.Rect;
-
-namespace OpenCVForUnity.RectangleTrack
-{
-    /// <summary>
-    /// Rectangle tracker.
-    /// Referring to https://github.com/Itseez/opencv/blob/master/modules/objdetect/src/detection_based_tracker.cpp.
-    /// v 1.0.4
-    /// </summary>
-    public class RectangleTracker
-    {
-        public List<TrackedObject> trackedObjects
-        {
-            get { return _trackedObjects; }
-        }
-
-        private List<TrackedObject> _trackedObjects;
-
-
-        public TrackerParameters trackerParameters
-        {
-            get { return _trackerParameters; }
-            set
-            {
-                if (value == null)
-                {
-                    throw new ArgumentNullException("value");
-                }
-                _trackerParameters = value;
-            }
-        }
-
-        private TrackerParameters _trackerParameters;
-
-
-        public List<float> weightsPositionsSmoothing
-        {
-            get { return _weightsPositionsSmoothing; }
-            set
-            {
-                if (value == null)
-                {
-                    throw new ArgumentNullException("value");
-                }
-                _weightsPositionsSmoothing = value;
-            }
-        }
-
-        private List<float> _weightsPositionsSmoothing = new List<float>();
-
-        public List<float> weightsSizesSmoothing
-        {
-            get { return _weightsSizesSmoothing; }
-            set
-            {
-                if (value == null)
-                {
-                    throw new ArgumentNullException("value");
-                }
-                _weightsSizesSmoothing = value;
-            }
-        }
-
-        private List<float> _weightsSizesSmoothing = new List<float>();
-
-        public RectangleTracker(TrackerParameters trackerParamerers = null)
-        {
-            _trackedObjects = new List<TrackedObject>();
-
-            if (trackerParamerers != null)
-            {
-                this._trackerParameters = trackerParamerers;
-            }
-            else
-            {
-                this._trackerParameters = new TrackerParameters();
-            }
-
-            _weightsPositionsSmoothing.Add(1);
-            _weightsSizesSmoothing.Add(0.5f);
-            _weightsSizesSmoothing.Add(0.3f);
-            _weightsSizesSmoothing.Add(0.2f);
-        }
-
-        public enum TrackedRectState : int
-        {
-            NEW_RECTANGLE = -1,
-            INTERSECTED_RECTANGLE = -2
-        }
-
-
-        public void GetObjects(List<Rect> result, bool smoothing = true)
-        {
-            result.Clear();
-
-            int count = _trackedObjects.Count;
-            for (int i = 0; i < count; i++)
-            {
-                Rect r;
-                if (smoothing)
-                {
-                    r = GetSmoothingRect(i);
-                }
-                else
-                {
-                    r = _trackedObjects[i].position;
-                }
-
-                if (_trackedObjects[i].state > TrackedState.NEW_DISPLAYED && _trackedObjects[i].state < TrackedState.NEW_HIDED)
-                    result.Add(r);
-
-                //LOGD("DetectionBasedTracker::process: found a object with SIZE %d x %d, rect={%d, %d, %d x %d}", r.width, r.height, r.x, r.y, r.width, r.height);
-                //Debug.Log("GetObjects" + r.width + " " + r.height + " " + r.x + " " + r.y + " " + r.width + " " + r.height + " " + trackedObjects[i].state + " " + trackedObjects[i].numDetectedFrames + " " + trackedObjects[i].numFramesNotDetected);
-            }
-        }
-
-        public void GetObjects(List<TrackedRect> result, bool smoothing = true)
-        {
-            result.Clear();
-
-            int count = _trackedObjects.Count;
-            for (int i = 0; i < count; i++)
-            {
-                Rect r;
-                if (smoothing)
-                {
-                    r = GetSmoothingRect(i);
-                }
-                else
-                {
-                    r = _trackedObjects[i].position;
-                }
-
-                result.Add(new TrackedRect(_trackedObjects[i].id, r, _trackedObjects[i].state, _trackedObjects[i].numDetectedFrames, _trackedObjects[i].numFramesNotDetected));
-
-                //LOGD("DetectionBasedTracker::process: found a object with SIZE %d x %d, rect={%d, %d, %d x %d}", r.width, r.height, r.x, r.y, r.width, r.height);
-                //Debug.Log("GetObjects" + r.width + " " + r.height + " " + r.x + " " + r.y + " " + r.width + " " + r.height + " " + trackedObjects[i].state + " " + trackedObjects[i].numDetectedFrames + " " + trackedObjects[i].numFramesNotDetected);
-            }
-        }
-
-        public void UpdateTrackedObjects(List<Rect> detectedObjects)
-        {
-            if (detectedObjects == null)
-                throw new ArgumentNullException("detectedObjects");
-
-            Rect[] correctionRects = CreateCorrectionBySpeedOfRects();
-
-            int N1 = (int)_trackedObjects.Count;
-            int N2 = (int)detectedObjects.Count;
-
-            for (int i = 0; i < N1; i++)
-            {
-                _trackedObjects[i].numDetectedFrames++;
-            }
-
-            int[] correspondence = Enumerable.Repeat<int>((int)TrackedRectState.NEW_RECTANGLE, N2).ToArray();
-
-
-            for (int i = 0; i < N1; i++)
-            {
-                TrackedObject curObject = _trackedObjects[i];
-
-                int bestIndex = -1;
-                int bestArea = -1;
-
-                //int numpositions = (int)curObject.lastPositions.Count;
-                //if (numpositions > 0) UnityEngine.Debug.LogError("numpositions > 0 is false");
-
-                //OpenCVRect prevRect = curObject.lastPositions[numpositions - 1];
-                Rect prevRect = correctionRects[i];
-
-                for (int j = 0; j < N2; j++)
-                {
-                    if (correspondence[j] >= 0)
-                    {
-                        //Debug.Log("DetectionBasedTracker::updateTrackedObjects: j=" + j + " is rejected, because it has correspondence=" + correspondence[j]);
-                        continue;
-                    }
-
-                    if (correspondence[j] != (int)TrackedRectState.NEW_RECTANGLE)
-                    {
-                        //Debug.Log("DetectionBasedTracker::updateTrackedObjects: j=" + j + " is rejected, because it is intersected with another rectangle");
-
-                        continue;
-                    }
-
-                    if (IsCollideByRectangle(prevRect, detectedObjects[j], _trackerParameters.coeffRectangleOverlap))
-                    {
-                        Rect r = Intersect(prevRect, detectedObjects[j]);
-                        if ((r.width > 0) && (r.height > 0))
-                        {
-                            //Debug.Log("DetectionBasedTracker::updateTrackedObjects: There is intersection between prevRect and detectedRect r={" + r.x + ", " + r.y + ", " + r.width + ", " + r.height + "]");
-
-                            correspondence[j] = (int)TrackedRectState.INTERSECTED_RECTANGLE;
-
-                            if (r.area() > bestArea)
-                            {
-                                //Debug.Log("DetectionBasedTracker::updateTrackedObjects: The area of intersection is " + r.area() + " it is better than bestArea= " + bestArea);
-
-                                bestIndex = j;
-                                bestArea = (int)r.area();
-                            }
-                        }
-                    }
-                }
-
-                if (bestIndex >= 0)
-                {
-                    //Debug.Log("DetectionBasedTracker::updateTrackedObjects: The best correspondence for i=" + i + " is j=" + bestIndex);
-
-                    correspondence[bestIndex] = i;
-
-                    Rect bestRect = detectedObjects[bestIndex];
-
-                    for (int j = 0; j < N2; j++)
-                    {
-                        if (correspondence[j] >= 0)
-                            continue;
-
-                        if (IsCollideByRectangle(detectedObjects[j], bestRect, _trackerParameters.coeffRectangleOverlap))
-                        {
-                            Rect r = Intersect(detectedObjects[j], bestRect);
-
-                            if ((r.width > 0) && (r.height > 0))
-                            {
-                                //Debug.Log("DetectionBasedTracker::updateTrackedObjects: Found intersection between rectangles j= " + j + " and bestIndex= " + bestIndex + " rectangle j= " + j + " is marked as intersected");
-
-                                correspondence[j] = (int)TrackedRectState.INTERSECTED_RECTANGLE;
-                            }
-                        }
-                    }
-                }
-                else
-                {
-                    //Debug.Log("DetectionBasedTracker::updateTrackedObjects: There is no correspondence for i= " + i);
-                    curObject.numFramesNotDetected++;
-                }
-            }
-
-            //Debug.Log("DetectionBasedTracker::updateTrackedObjects: start second cycle");
-            for (int j = 0; j < N2; j++)
-            {
-                int i = correspondence[j];
-                if (i >= 0)
-                {//add position
-                    //Debug.Log("DetectionBasedTracker::updateTrackedObjects: add position");
-
-                    _trackedObjects[i].lastPositions.Add(detectedObjects[j]);
-                    while ((int)_trackedObjects[i].lastPositions.Count > (int)_trackerParameters.numLastPositionsToTrack)
-                    {
-                        _trackedObjects[i].lastPositions.Remove(_trackedObjects[i].lastPositions[0]);
-                    }
-                    _trackedObjects[i].numFramesNotDetected = 0;
-                    if (_trackedObjects[i].state != TrackedState.DELETED)
-                        _trackedObjects[i].state = TrackedState.DISPLAYED;
-                }
-                else if (i == (int)TrackedRectState.NEW_RECTANGLE)
-                { //new object
-                    //Debug.Log("DetectionBasedTracker::updateTrackedObjects: new object");
-
-                    _trackedObjects.Add(new TrackedObject(detectedObjects[j]));
-                }
-                else
-                {
-                    //Debug.Log("DetectionBasedTracker::updateTrackedObjects: was auxiliary intersection");
-                }
-            }
-
-
-            int t = 0;
-            TrackedObject it;
-            while (t < _trackedObjects.Count)
-            {
-                it = _trackedObjects[t];
-
-                if (it.state == TrackedState.DELETED)
-                {
-                    _trackedObjects.Remove(it);
-                }
-                else if ((it.numFramesNotDetected > _trackerParameters.maxTrackLifetime)//ALL
-                         ||
-                         ((it.numDetectedFrames <= _trackerParameters.numStepsToWaitBeforeFirstShow)
-                         &&
-                         (it.numFramesNotDetected > _trackerParameters.numStepsToTrackWithoutDetectingIfObjectHasNotBeenShown)))
-                {
-                    it.state = TrackedState.DELETED;
-                    t++;
-                }
-                else if (it.state >= TrackedState.DISPLAYED)
-                {//DISPLAYED, NEW_DISPLAYED, HIDED
-
-                    if (it.numDetectedFrames < _trackerParameters.numStepsToWaitBeforeFirstShow)
-                    {
-                        it.state = TrackedState.PENDING;
-                    }
-                    else if (it.numDetectedFrames == _trackerParameters.numStepsToWaitBeforeFirstShow)
-                    {
-                        //i, trackedObjects[i].numDetectedFrames, innerParameters.numStepsToWaitBeforeFirstShow);
-                        it.state = TrackedState.NEW_DISPLAYED;
-                    }
-                    else if (it.numFramesNotDetected == _trackerParameters.numStepsToShowWithoutDetecting)
-                    {
-                        it.state = TrackedState.NEW_HIDED;
-                    }
-                    else if (it.numFramesNotDetected > _trackerParameters.numStepsToShowWithoutDetecting)
-                    {
-                        it.state = TrackedState.HIDED;
-                    }
-
-                    t++;
-                }
-                else
-                {//NEW
-                    t++;
-                }
-            }
-        }
-
-        public Rect[] CreateCorrectionBySpeedOfRects()
-        {
-            //Debug.Log("DetectionBasedTracker::process: get _rectsWhereRegions from previous positions");
-            Rect[] rectsWhereRegions = new Rect[_trackedObjects.Count];
-
-            int count = _trackedObjects.Count;
-            for (int i = 0; i < count; i++)
-            {
-                int n = _trackedObjects[i].lastPositions.Count;
-                //if (n > 0) UnityEngine.Debug.LogError("n > 0 is false");
-
-                Rect r = _trackedObjects[i].lastPositions[n - 1].clone();
-
-                //if (r.area() == 0)
-                //{
-                //    Debug.Log("DetectionBasedTracker::process: ERROR: ATTENTION: strange algorithm's behavior: trackedObjects[i].rect() is empty");
-                //    continue;
-                //}
-
-                //correction by speed of rectangle
-                if (n > 1)
-                {
-                    Point center = CenterRect(r);
-                    Point center_prev = CenterRect(_trackedObjects[i].lastPositions[n - 2]);
-                    Point shift = new Point((center.x - center_prev.x) * _trackerParameters.coeffObjectSpeedUsingInPrediction,
-                                      (center.y - center_prev.y) * _trackerParameters.coeffObjectSpeedUsingInPrediction);
-
-                    r.x += (int)Math.Round(shift.x);
-                    r.y += (int)Math.Round(shift.y);
-                }
-
-                rectsWhereRegions[i] = r;
-            }
-
-            return rectsWhereRegions;
-        }
-
-        public Rect[] CreateRawRects()
-        {
-            Rect[] rectsWhereRegions = new Rect[_trackedObjects.Count];
-
-            int count = _trackedObjects.Count;
-            for (int i = 0; i < count; i++)
-            {
-                rectsWhereRegions[i] = _trackedObjects[i].position;
-            }
-
-            return rectsWhereRegions;
-        }
-
-        private Point CenterRect(Rect r)
-        {
-            return new Point(r.x + (r.width / 2), r.y + (r.height / 2));
-        }
-
-        private Rect GetSmoothingRect(int i)
-        {
-            //Debug.Log("trackedObjects[i].numFramesNotDetected: " + trackedObjects[i].numFramesNotDetected);
-
-            List<float> weightsSizesSmoothing = _weightsSizesSmoothing;
-            List<float> weightsPositionsSmoothing = _weightsPositionsSmoothing;
-
-            List<Rect> lastPositions = _trackedObjects[i].lastPositions;
-
-            int N = lastPositions.Count;
-            if (N <= 0)
-            {
-                Debug.Log("DetectionBasedTracker::calcTrackedObjectPositionToShow: ERROR: no positions for i=" + i);
-                return new Rect();
-            }
-
-            int Nsize = Math.Min(N, (int)weightsSizesSmoothing.Count);
-            int Ncenter = Math.Min(N, (int)weightsPositionsSmoothing.Count);
-
-            Point center = new Point();
-            double w = 0, h = 0;
-            if (Nsize > 0)
-            {
-                double sum = 0;
-                for (int j = 0; j < Nsize; j++)
-                {
-                    int k = N - j - 1;
-                    w += lastPositions[k].width * weightsSizesSmoothing[j];
-                    h += lastPositions[k].height * weightsSizesSmoothing[j];
-                    sum += weightsSizesSmoothing[j];
-                }
-                w /= sum;
-                h /= sum;
-            }
-            else
-            {
-                w = lastPositions[N - 1].width;
-                h = lastPositions[N - 1].height;
-            }
-
-            if (Ncenter > 0)
-            {
-                double sum = 0;
-                for (int j = 0; j < Ncenter; j++)
-                {
-                    int k = N - j - 1;
-                    Point tl = lastPositions[k].tl();
-                    Point br = lastPositions[k].br();
-                    Point c1;
-
-                    c1 = new Point(tl.x * 0.5f, tl.y * 0.5f);
-                    Point c2;
-
-                    c2 = new Point(br.x * 0.5f, br.y * 0.5f);
-                    c1 = new Point(c1.x + c2.x, c1.y + c2.y);
-
-                    center = new Point(center.x + (c1.x * weightsPositionsSmoothing[j]), center.y + (c1.y * weightsPositionsSmoothing[j]));
-                    sum += weightsPositionsSmoothing[j];
-                }
-                center = new Point(center.x * (1 / sum), center.y * (1 / sum));
-            }
-            else
-            {
-                int k = N - 1;
-                Point tl = lastPositions[k].tl();
-                Point br = lastPositions[k].br();
-                Point c1;
-
-                c1 = new Point(tl.x * 0.5f, tl.y * 0.5f);
-                Point c2;
-
-                c2 = new Point(br.x * 0.5f, br.y * 0.5f);
-
-                center = new Point(c1.x + c2.x, c1.y + c2.y);
-            }
-            Point tl2 = new Point(center.x - (w * 0.5f), center.y - (h * 0.5f));
-            Rect res = new Rect((int)Math.Round(tl2.x), (int)Math.Round(tl2.y), (int)Math.Round(w), (int)Math.Round(h));
-
-            //Debug.Log("DetectionBasedTracker::calcTrackedObjectPositionToShow: Result for i=" + i + ": {" + res.x + ", " + res.y + ", " + res.width + ", " + res.height + "}");
-
-            return res;
-        }
-
-        public void Reset()
-        {
-            _trackedObjects.Clear();
-        }
-
-        private Rect Intersect(Rect a, Rect b)
-        {
-            int x1 = Math.Max(a.x, b.x);
-            int x2 = Math.Min(a.x + a.width, b.x + b.width);
-            int y1 = Math.Max(a.y, b.y);
-            int y2 = Math.Min(a.y + a.height, b.y + b.height);
-
-            if (x2 >= x1 && y2 >= y1)
-                return new Rect(x1, y1, x2 - x1, y2 - y1);
-            else
-                return new Rect();
-        }
-
-        //private bool IsCollideByCircle(Rect a, Rect b, float coeffRectangleOverlap)
-        //{
-        //    int r1 = (int)(a.width / 2.0f);
-        //    int r2 = (int)(b.width / 2.0f);
-        //    int px1 = a.x + r1;
-        //    int py1 = a.y + r1;
-        //    int px2 = b.x + r2;
-        //    int py2 = b.y + r2;
-
-        //    if ((px2 - px1) * (px2 - px1) + (py2 - py1) * (py2 - py1) <= (r1 + r2) * (r1 + r2) * coeffRectangleOverlap)
-        //        return true;
-        //    else
-        //        return false;
-        //}
-
-        private bool IsCollideByRectangle(Rect a, Rect b, float coeffRectangleOverlap)
-        {
-            int mw = (int)(a.width * coeffRectangleOverlap);
-            int mh = (int)(a.height * coeffRectangleOverlap);
-            int mx1 = (int)(a.x + (a.width - mw) / 2.0f);
-            int my1 = (int)(a.y + (a.height - mh) / 2.0f);
-            int mx2 = (int)(mx1 + mw);
-            int my2 = (int)(my1 + mh);
-
-            int ew = (int)(b.width * coeffRectangleOverlap);
-            int eh = (int)(b.height * coeffRectangleOverlap);
-            int ex1 = (int)(b.x + (b.width - ew) / 2.0f);
-            int ey1 = (int)(b.y + (b.height - eh) / 2.0f);
-            int ex2 = (int)(ex1 + ew);
-            int ey2 = (int)(ey1 + eh);
-
-            if (mx1 <= ex2 && ex1 <= mx2 && my1 <= ey2 && ey1 <= my2)
-                return true;
-            else
-                return false;
-        }
-
-        public void Dispose()
-        {
-            Reset();
-        }
-    }
-}
+using OpenCVForUnity.CoreModule;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+using Rect = OpenCVForUnity.CoreModule.Rect;
+
+namespace OpenCVForUnity.RectangleTrack
+{
+    /// <summary>
+    /// Rectangle tracker.
+    /// Referring to https://github.com/Itseez/opencv/blob/master/modules/objdetect/src/detection_based_tracker.cpp.
+    /// v 1.0.4
+    /// </summary>
+    public class RectangleTracker
+    {
+        public List<TrackedObject> trackedObjects
+        {
+            get { return _trackedObjects; }
+        }
+
+        private List<TrackedObject> _trackedObjects;
+
+
+        public TrackerParameters trackerParameters
+        {
+            get { return _trackerParameters; }
+            set
+            {
+                if (value == null)
+                {
+                    throw new ArgumentNullException("value");
+                }
+                _trackerParameters = value;
+            }
+        }
+
+        private TrackerParameters _trackerParameters;
+
+
+        public List<float> weightsPositionsSmoothing
+        {
+            get { return _weightsPositionsSmoothing; }
+            set
+            {
+                if (value == null)
+                {
+                    throw new ArgumentNullException("value");
+                }
+                _weightsPositionsSmoothing = value;
+            }
+        }
+
+        private List<float> _weightsPositionsSmoothing = new List<float>();
+
+        public List<float> weightsSizesSmoothing
+        {
+            get { return _weightsSizesSmoothing; }
+            set
+            {
+                if (value == null)
+                {
+                    throw new ArgumentNullException("value");
+                }
+                _weightsSizesSmoothing = value;
+            }
+        }
+
+        private List<float> _weightsSizesSmoothing = new List<float>();
+
+        public RectangleTracker(TrackerParameters trackerParamerers = null)
+        {
+            _trackedObjects = new List<TrackedObject>();
+
+            if (trackerParamerers != null)
+            {
+                this._trackerParameters = trackerParamerers;
+            }
+            else
+            {
+                this._trackerParameters = new TrackerParameters();
+            }
+
+            _weightsPositionsSmoothing.Add(1);
+            _weightsSizesSmoothing.Add(0.5f);
+            _weightsSizesSmoothing.Add(0.3f);
+            _weightsSizesSmoothing.Add(0.2f);
+        }
+
+        public enum TrackedRectState : int
+        {
+            NEW_RECTANGLE = -1,
+            INTERSECTED_RECTANGLE = -2
+        }
+
+
+        public void GetObjects(List<Rect> result, bool smoothing = true)
+        {
+            result.Clear();
+
+            int count = _trackedObjects.Count;
+            for (int i = 0; i < count; i++)
+            {
+                Rect r;
+                if (smoothing)
+                {
+                    r = GetSmoothingRect(i);
+                }
+                else
+                {
+                    r = _trackedObjects[i].position;
+                }
+
+                if (_trackedObjects[i].state > TrackedState.NEW_DISPLAYED && _trackedObjects[i].state < TrackedState.NEW_HIDED)
+                    result.Add(r);
+
+                //LOGD("DetectionBasedTracker::process: found a object with SIZE %d x %d, rect={%d, %d, %d x %d}", r.width, r.height, r.x, r.y, r.width, r.height);
+                //Debug.Log("GetObjects" + r.width + " " + r.height + " " + r.x + " " + r.y + " " + r.width + " " + r.height + " " + trackedObjects[i].state + " " + trackedObjects[i].numDetectedFrames + " " + trackedObjects[i].numFramesNotDetected);
+            }
+        }
+
+        public void GetObjects(List<TrackedRect> result, bool smoothing = true)
+        {
+            result.Clear();
+
+            int count = _trackedObjects.Count;
+            for (int i = 0; i < count; i++)
+            {
+                Rect r;
+                if (smoothing)
+                {
+                    r = GetSmoothingRect(i);
+                }
+                else
+                {
+                    r = _trackedObjects[i].position;
+                }
+
+                result.Add(new TrackedRect(_trackedObjects[i].id, r, _trackedObjects[i].state, _trackedObjects[i].numDetectedFrames, _trackedObjects[i].numFramesNotDetected));
+
+                //LOGD("DetectionBasedTracker::process: found a object with SIZE %d x %d, rect={%d, %d, %d x %d}", r.width, r.height, r.x, r.y, r.width, r.height);
+                //Debug.Log("GetObjects" + r.width + " " + r.height + " " + r.x + " " + r.y + " " + r.width + " " + r.height + " " + trackedObjects[i].state + " " + trackedObjects[i].numDetectedFrames + " " + trackedObjects[i].numFramesNotDetected);
+            }
+        }
+
+        public void UpdateTrackedObjects(List<Rect> detectedObjects)
+        {
+            if (detectedObjects == null)
+                throw new ArgumentNullException("detectedObjects");
+
+            Rect[] correctionRects = CreateCorrectionBySpeedOfRects();
+
+            int N1 = (int)_trackedObjects.Count;
+            int N2 = (int)detectedObjects.Count;
+
+            for (int i = 0; i < N1; i++)
+            {
+                _trackedObjects[i].numDetectedFrames++;
+            }
+
+            int[] correspondence = Enumerable.Repeat<int>((int)TrackedRectState.NEW_RECTANGLE, N2).ToArray();
+
+
+            for (int i = 0; i < N1; i++)
+            {
+                TrackedObject curObject = _trackedObjects[i];
+
+                int bestIndex = -1;
+                int bestArea = -1;
+
+                //int numpositions = (int)curObject.lastPositions.Count;
+                //if (numpositions > 0) UnityEngine.Debug.LogError("numpositions > 0 is false");
+
+                //OpenCVRect prevRect = curObject.lastPositions[numpositions - 1];
+                Rect prevRect = correctionRects[i];
+
+                for (int j = 0; j < N2; j++)
+                {
+                    if (correspondence[j] >= 0)
+                    {
+                        //Debug.Log("DetectionBasedTracker::updateTrackedObjects: j=" + j + " is rejected, because it has correspondence=" + correspondence[j]);
+                        continue;
+                    }
+
+                    if (correspondence[j] != (int)TrackedRectState.NEW_RECTANGLE)
+                    {
+                        //Debug.Log("DetectionBasedTracker::updateTrackedObjects: j=" + j + " is rejected, because it is intersected with another rectangle");
+
+                        continue;
+                    }
+
+                    if (IsCollideByRectangle(prevRect, detectedObjects[j], _trackerParameters.coeffRectangleOverlap))
+                    {
+                        Rect r = Intersect(prevRect, detectedObjects[j]);
+                        if ((r.width > 0) && (r.height > 0))
+                        {
+                            //Debug.Log("DetectionBasedTracker::updateTrackedObjects: There is intersection between prevRect and detectedRect r={" + r.x + ", " + r.y + ", " + r.width + ", " + r.height + "]");
+
+                            correspondence[j] = (int)TrackedRectState.INTERSECTED_RECTANGLE;
+
+                            if (r.area() > bestArea)
+                            {
+                                //Debug.Log("DetectionBasedTracker::updateTrackedObjects: The area of intersection is " + r.area() + " it is better than bestArea= " + bestArea);
+
+                                bestIndex = j;
+                                bestArea = (int)r.area();
+                            }
+                        }
+                    }
+                }
+
+                if (bestIndex >= 0)
+                {
+                    //Debug.Log("DetectionBasedTracker::updateTrackedObjects: The best correspondence for i=" + i + " is j=" + bestIndex);
+
+                    correspondence[bestIndex] = i;
+
+                    Rect bestRect = detectedObjects[bestIndex];
+
+                    for (int j = 0; j < N2; j++)
+                    {
+                        if (correspondence[j] >= 0)
+                            continue;
+
+                        if (IsCollideByRectangle(detectedObjects[j], bestRect, _trackerParameters.coeffRectangleOverlap))
+                        {
+                            Rect r = Intersect(detectedObjects[j], bestRect);
+
+                            if ((r.width > 0) && (r.height > 0))
+                            {
+                                //Debug.Log("DetectionBasedTracker::updateTrackedObjects: Found intersection between rectangles j= " + j + " and bestIndex= " + bestIndex + " rectangle j= " + j + " is marked as intersected");
+
+                                correspondence[j] = (int)TrackedRectState.INTERSECTED_RECTANGLE;
+                            }
+                        }
+                    }
+                }
+                else
+                {
+                    //Debug.Log("DetectionBasedTracker::updateTrackedObjects: There is no correspondence for i= " + i);
+                    curObject.numFramesNotDetected++;
+                }
+            }
+
+            //Debug.Log("DetectionBasedTracker::updateTrackedObjects: start second cycle");
+            for (int j = 0; j < N2; j++)
+            {
+                int i = correspondence[j];
+                if (i >= 0)
+                {//add position
+                    //Debug.Log("DetectionBasedTracker::updateTrackedObjects: add position");
+
+                    _trackedObjects[i].lastPositions.Add(detectedObjects[j]);
+                    while ((int)_trackedObjects[i].lastPositions.Count > (int)_trackerParameters.numLastPositionsToTrack)
+                    {
+                        _trackedObjects[i].lastPositions.Remove(_trackedObjects[i].lastPositions[0]);
+                    }
+                    _trackedObjects[i].numFramesNotDetected = 0;
+                    if (_trackedObjects[i].state != TrackedState.DELETED)
+                        _trackedObjects[i].state = TrackedState.DISPLAYED;
+                }
+                else if (i == (int)TrackedRectState.NEW_RECTANGLE)
+                { //new object
+                    //Debug.Log("DetectionBasedTracker::updateTrackedObjects: new object");
+
+                    _trackedObjects.Add(new TrackedObject(detectedObjects[j]));
+                }
+                else
+                {
+                    //Debug.Log("DetectionBasedTracker::updateTrackedObjects: was auxiliary intersection");
+                }
+            }
+
+
+            int t = 0;
+            TrackedObject it;
+            while (t < _trackedObjects.Count)
+            {
+                it = _trackedObjects[t];
+
+                if (it.state == TrackedState.DELETED)
+                {
+                    _trackedObjects.Remove(it);
+                }
+                else if ((it.numFramesNotDetected > _trackerParameters.maxTrackLifetime)//ALL
+                         ||
+                         ((it.numDetectedFrames <= _trackerParameters.numStepsToWaitBeforeFirstShow)
+                         &&
+                         (it.numFramesNotDetected > _trackerParameters.numStepsToTrackWithoutDetectingIfObjectHasNotBeenShown)))
+                {
+                    it.state = TrackedState.DELETED;
+                    t++;
+                }
+                else if (it.state >= TrackedState.DISPLAYED)
+                {//DISPLAYED, NEW_DISPLAYED, HIDED
+
+                    if (it.numDetectedFrames < _trackerParameters.numStepsToWaitBeforeFirstShow)
+                    {
+                        it.state = TrackedState.PENDING;
+                    }
+                    else if (it.numDetectedFrames == _trackerParameters.numStepsToWaitBeforeFirstShow)
+                    {
+                        //i, trackedObjects[i].numDetectedFrames, innerParameters.numStepsToWaitBeforeFirstShow);
+                        it.state = TrackedState.NEW_DISPLAYED;
+                    }
+                    else if (it.numFramesNotDetected == _trackerParameters.numStepsToShowWithoutDetecting)
+                    {
+                        it.state = TrackedState.NEW_HIDED;
+                    }
+                    else if (it.numFramesNotDetected > _trackerParameters.numStepsToShowWithoutDetecting)
+                    {
+                        it.state = TrackedState.HIDED;
+                    }
+
+                    t++;
+                }
+                else
+                {//NEW
+                    t++;
+                }
+            }
+        }
+
+        public Rect[] CreateCorrectionBySpeedOfRects()
+        {
+            //Debug.Log("DetectionBasedTracker::process: get _rectsWhereRegions from previous positions");
+            Rect[] rectsWhereRegions = new Rect[_trackedObjects.Count];
+
+            int count = _trackedObjects.Count;
+            for (int i = 0; i < count; i++)
+            {
+                int n = _trackedObjects[i].lastPositions.Count;
+                //if (n > 0) UnityEngine.Debug.LogError("n > 0 is false");
+
+                Rect r = _trackedObjects[i].lastPositions[n - 1].clone();
+
+                //if (r.area() == 0)
+                //{
+                //    Debug.Log("DetectionBasedTracker::process: ERROR: ATTENTION: strange algorithm's behavior: trackedObjects[i].rect() is empty");
+                //    continue;
+                //}
+
+                //correction by speed of rectangle
+                if (n > 1)
+                {
+                    Point center = CenterRect(r);
+                    Point center_prev = CenterRect(_trackedObjects[i].lastPositions[n - 2]);
+                    Point shift = new Point((center.x - center_prev.x) * _trackerParameters.coeffObjectSpeedUsingInPrediction,
+                                      (center.y - center_prev.y) * _trackerParameters.coeffObjectSpeedUsingInPrediction);
+
+                    r.x += (int)Math.Round(shift.x);
+                    r.y += (int)Math.Round(shift.y);
+                }
+
+                rectsWhereRegions[i] = r;
+            }
+
+            return rectsWhereRegions;
+        }
+
+        public Rect[] CreateRawRects()
+        {
+            Rect[] rectsWhereRegions = new Rect[_trackedObjects.Count];
+
+            int count = _trackedObjects.Count;
+            for (int i = 0; i < count; i++)
+            {
+                rectsWhereRegions[i] = _trackedObjects[i].position;
+            }
+
+            return rectsWhereRegions;
+        }
+
+        private Point CenterRect(Rect r)
+        {
+            return new Point(r.x + (r.width / 2), r.y + (r.height / 2));
+        }
+
+        private Rect GetSmoothingRect(int i)
+        {
+            //Debug.Log("trackedObjects[i].numFramesNotDetected: " + trackedObjects[i].numFramesNotDetected);
+
+            List<float> weightsSizesSmoothing = _weightsSizesSmoothing;
+            List<float> weightsPositionsSmoothing = _weightsPositionsSmoothing;
+
+            List<Rect> lastPositions = _trackedObjects[i].lastPositions;
+
+            int N = lastPositions.Count;
+            if (N <= 0)
+            {
+                Debug.Log("DetectionBasedTracker::calcTrackedObjectPositionToShow: ERROR: no positions for i=" + i);
+                return new Rect();
+            }
+
+            int Nsize = Math.Min(N, (int)weightsSizesSmoothing.Count);
+            int Ncenter = Math.Min(N, (int)weightsPositionsSmoothing.Count);
+
+            Point center = new Point();
+            double w = 0, h = 0;
+            if (Nsize > 0)
+            {
+                double sum = 0;
+                for (int j = 0; j < Nsize; j++)
+                {
+                    int k = N - j - 1;
+                    w += lastPositions[k].width * weightsSizesSmoothing[j];
+                    h += lastPositions[k].height * weightsSizesSmoothing[j];
+                    sum += weightsSizesSmoothing[j];
+                }
+                w /= sum;
+                h /= sum;
+            }
+            else
+            {
+                w = lastPositions[N - 1].width;
+                h = lastPositions[N - 1].height;
+            }
+
+            if (Ncenter > 0)
+            {
+                double sum = 0;
+                for (int j = 0; j < Ncenter; j++)
+                {
+                    int k = N - j - 1;
+                    Point tl = lastPositions[k].tl();
+                    Point br = lastPositions[k].br();
+                    Point c1;
+
+                    c1 = new Point(tl.x * 0.5f, tl.y * 0.5f);
+                    Point c2;
+
+                    c2 = new Point(br.x * 0.5f, br.y * 0.5f);
+                    c1 = new Point(c1.x + c2.x, c1.y + c2.y);
+
+                    center = new Point(center.x + (c1.x * weightsPositionsSmoothing[j]), center.y + (c1.y * weightsPositionsSmoothing[j]));
+                    sum += weightsPositionsSmoothing[j];
+                }
+                center = new Point(center.x * (1 / sum), center.y * (1 / sum));
+            }
+            else
+            {
+                int k = N - 1;
+                Point tl = lastPositions[k].tl();
+                Point br = lastPositions[k].br();
+                Point c1;
+
+                c1 = new Point(tl.x * 0.5f, tl.y * 0.5f);
+                Point c2;
+
+                c2 = new Point(br.x * 0.5f, br.y * 0.5f);
+
+                center = new Point(c1.x + c2.x, c1.y + c2.y);
+            }
+            Point tl2 = new Point(center.x - (w * 0.5f), center.y - (h * 0.5f));
+            Rect res = new Rect((int)Math.Round(tl2.x), (int)Math.Round(tl2.y), (int)Math.Round(w), (int)Math.Round(h));
+
+            //Debug.Log("DetectionBasedTracker::calcTrackedObjectPositionToShow: Result for i=" + i + ": {" + res.x + ", " + res.y + ", " + res.width + ", " + res.height + "}");
+
+            return res;
+        }
+
+        public void Reset()
+        {
+            _trackedObjects.Clear();
+        }
+
+        private Rect Intersect(Rect a, Rect b)
+        {
+            int x1 = Math.Max(a.x, b.x);
+            int x2 = Math.Min(a.x + a.width, b.x + b.width);
+            int y1 = Math.Max(a.y, b.y);
+            int y2 = Math.Min(a.y + a.height, b.y + b.height);
+
+            if (x2 >= x1 && y2 >= y1)
+                return new Rect(x1, y1, x2 - x1, y2 - y1);
+            else
+                return new Rect();
+        }
+
+        //private bool IsCollideByCircle(Rect a, Rect b, float coeffRectangleOverlap)
+        //{
+        //    int r1 = (int)(a.width / 2.0f);
+        //    int r2 = (int)(b.width / 2.0f);
+        //    int px1 = a.x + r1;
+        //    int py1 = a.y + r1;
+        //    int px2 = b.x + r2;
+        //    int py2 = b.y + r2;
+
+        //    if ((px2 - px1) * (px2 - px1) + (py2 - py1) * (py2 - py1) <= (r1 + r2) * (r1 + r2) * coeffRectangleOverlap)
+        //        return true;
+        //    else
+        //        return false;
+        //}
+
+        private bool IsCollideByRectangle(Rect a, Rect b, float coeffRectangleOverlap)
+        {
+            int mw = (int)(a.width * coeffRectangleOverlap);
+            int mh = (int)(a.height * coeffRectangleOverlap);
+            int mx1 = (int)(a.x + (a.width - mw) / 2.0f);
+            int my1 = (int)(a.y + (a.height - mh) / 2.0f);
+            int mx2 = (int)(mx1 + mw);
+            int my2 = (int)(my1 + mh);
+
+            int ew = (int)(b.width * coeffRectangleOverlap);
+            int eh = (int)(b.height * coeffRectangleOverlap);
+            int ex1 = (int)(b.x + (b.width - ew) / 2.0f);
+            int ey1 = (int)(b.y + (b.height - eh) / 2.0f);
+            int ex2 = (int)(ex1 + ew);
+            int ey2 = (int)(ey1 + eh);
+
+            if (mx1 <= ex2 && ex1 <= mx2 && my1 <= ey2 && ey1 <= my2)
+                return true;
+            else
+                return false;
+        }
+
+        public void Dispose()
+        {
+            Reset();
+        }
+    }
+}
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackedObject.cs b/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackedObject.cs
index 6a0c8df..ae016fd 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackedObject.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackedObject.cs
@@ -1,52 +1,52 @@
-using OpenCVForUnity.CoreModule;
-using PositionsVector = System.Collections.Generic.List<OpenCVForUnity.CoreModule.Rect>;
-
-namespace OpenCVForUnity.RectangleTrack
-{
-    public enum TrackedState : int
-    {
-        NEW = 0,
-        PENDING = 1,
-        NEW_DISPLAYED = 2,
-        DISPLAYED = 3,
-        NEW_HIDED = 4,
-        HIDED = 5,
-        DELETED = 6
-    }
-
-    public class TrackedObject
-    {
-        public PositionsVector lastPositions;
-        public int numDetectedFrames;
-        public int numFramesNotDetected;
-        public int id;
-        public TrackedState state;
-
-        public Rect position
-        {
-            get { return lastPositions[lastPositions.Count - 1].clone(); }
-        }
-
-        static private int _id = 0;
-
-        public TrackedObject(Rect rect)
-        {
-            lastPositions = new PositionsVector();
-
-            numDetectedFrames = 1;
-            numFramesNotDetected = 0;
-            state = TrackedState.NEW;
-
-            lastPositions.Add(rect.clone());
-
-            _id = GetNextId();
-            id = _id;
-        }
-
-        static int GetNextId()
-        {
-            _id++;
-            return _id;
-        }
-    }
+using OpenCVForUnity.CoreModule;
+using PositionsVector = System.Collections.Generic.List<OpenCVForUnity.CoreModule.Rect>;
+
+namespace OpenCVForUnity.RectangleTrack
+{
+    public enum TrackedState : int
+    {
+        NEW = 0,
+        PENDING = 1,
+        NEW_DISPLAYED = 2,
+        DISPLAYED = 3,
+        NEW_HIDED = 4,
+        HIDED = 5,
+        DELETED = 6
+    }
+
+    public class TrackedObject
+    {
+        public PositionsVector lastPositions;
+        public int numDetectedFrames;
+        public int numFramesNotDetected;
+        public int id;
+        public TrackedState state;
+
+        public Rect position
+        {
+            get { return lastPositions[lastPositions.Count - 1].clone(); }
+        }
+
+        static private int _id = 0;
+
+        public TrackedObject(Rect rect)
+        {
+            lastPositions = new PositionsVector();
+
+            numDetectedFrames = 1;
+            numFramesNotDetected = 0;
+            state = TrackedState.NEW;
+
+            lastPositions.Add(rect.clone());
+
+            _id = GetNextId();
+            id = _id;
+        }
+
+        static int GetNextId()
+        {
+            _id++;
+            return _id;
+        }
+    }
 }
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackedRect.cs b/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackedRect.cs
index 155b40d..8ef64dc 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackedRect.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackedRect.cs
@@ -1,21 +1,21 @@
-using OpenCVForUnity.CoreModule;
-
-namespace OpenCVForUnity.RectangleTrack
-{
-    public class TrackedRect : Rect
-    {
-        public int numDetectedFrames;
-        public int numFramesNotDetected;
-        public int id;
-        public TrackedState state;
-
-        public TrackedRect(int id, Rect rect, TrackedState state, int numDetectedFrames, int numFramesNotDetected)
-            : base(rect.x, rect.y, rect.width, rect.height)
-        {
-            this.numDetectedFrames = numDetectedFrames;
-            this.numFramesNotDetected = numFramesNotDetected;
-            this.id = id;
-            this.state = state;
-        }
-    }
+using OpenCVForUnity.CoreModule;
+
+namespace OpenCVForUnity.RectangleTrack
+{
+    public class TrackedRect : Rect
+    {
+        public int numDetectedFrames;
+        public int numFramesNotDetected;
+        public int id;
+        public TrackedState state;
+
+        public TrackedRect(int id, Rect rect, TrackedState state, int numDetectedFrames, int numFramesNotDetected)
+            : base(rect.x, rect.y, rect.width, rect.height)
+        {
+            this.numDetectedFrames = numDetectedFrames;
+            this.numFramesNotDetected = numFramesNotDetected;
+            this.id = id;
+            this.state = state;
+        }
+    }
 }
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackerParameters.cs b/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackerParameters.cs
index d527a6e..6ce7c90 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackerParameters.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/RectangleTracker/Scripts/TrackerParameters.cs
@@ -1,33 +1,33 @@
-namespace OpenCVForUnity.RectangleTrack
-{
-    public class TrackerParameters
-    {
-        public int numLastPositionsToTrack = 4;
-        public int numStepsToWaitBeforeFirstShow = 6;
-        public int numStepsToTrackWithoutDetectingIfObjectHasNotBeenShown = 3;
-        public int numStepsToShowWithoutDetecting = 3;
-
-        public int maxTrackLifetime = 5;
-
-        public float coeffObjectSpeedUsingInPrediction = 0.8f;
-        public float coeffRectangleOverlap = 0.7f;
-
-        public TrackerParameters()
-        {
-        }
-
-        public TrackerParameters Clone()
-        {
-            TrackerParameters trackerParameters = new TrackerParameters();
-            trackerParameters.numLastPositionsToTrack = numLastPositionsToTrack;
-            trackerParameters.numStepsToWaitBeforeFirstShow = numStepsToWaitBeforeFirstShow;
-            trackerParameters.numStepsToTrackWithoutDetectingIfObjectHasNotBeenShown = numStepsToTrackWithoutDetectingIfObjectHasNotBeenShown;
-            trackerParameters.numStepsToShowWithoutDetecting = numStepsToShowWithoutDetecting;
-            trackerParameters.maxTrackLifetime = maxTrackLifetime;
-            trackerParameters.coeffObjectSpeedUsingInPrediction = coeffObjectSpeedUsingInPrediction;
-            trackerParameters.coeffRectangleOverlap = coeffRectangleOverlap;
-
-            return trackerParameters;
-        }
-    }
-}
+namespace OpenCVForUnity.RectangleTrack
+{
+    public class TrackerParameters
+    {
+        public int numLastPositionsToTrack = 4;
+        public int numStepsToWaitBeforeFirstShow = 6;
+        public int numStepsToTrackWithoutDetectingIfObjectHasNotBeenShown = 3;
+        public int numStepsToShowWithoutDetecting = 3;
+
+        public int maxTrackLifetime = 5;
+
+        public float coeffObjectSpeedUsingInPrediction = 0.8f;
+        public float coeffRectangleOverlap = 0.7f;
+
+        public TrackerParameters()
+        {
+        }
+
+        public TrackerParameters Clone()
+        {
+            TrackerParameters trackerParameters = new TrackerParameters();
+            trackerParameters.numLastPositionsToTrack = numLastPositionsToTrack;
+            trackerParameters.numStepsToWaitBeforeFirstShow = numStepsToWaitBeforeFirstShow;
+            trackerParameters.numStepsToTrackWithoutDetectingIfObjectHasNotBeenShown = numStepsToTrackWithoutDetectingIfObjectHasNotBeenShown;
+            trackerParameters.numStepsToShowWithoutDetecting = numStepsToShowWithoutDetecting;
+            trackerParameters.maxTrackLifetime = maxTrackLifetime;
+            trackerParameters.coeffObjectSpeedUsingInPrediction = coeffObjectSpeedUsingInPrediction;
+            trackerParameters.coeffRectangleOverlap = coeffRectangleOverlap;
+
+            return trackerParameters;
+        }
+    }
+}
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Scripts/ARGameObject.cs b/Assets/HoloLensWithOpenCVForUnityExample/Scripts/ARGameObject.cs
index fb80c26..f84ffc8 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/Scripts/ARGameObject.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/Scripts/ARGameObject.cs
@@ -1,83 +1,83 @@
-using OpenCVForUnity.UnityUtils;
-using System.Collections.Generic;
-using UnityEngine;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    /// <summary>
-    /// AR Game Object
-    /// Referring to https://github.com/qian256/HoloLensARToolKit/blob/master/HoloLensARToolKit/Assets/ARToolKitUWP/Scripts/ARUWPTarget.cs.
-    /// </summary>
-    public class ARGameObject : MonoBehaviour
-    {
-        public bool smoothing = true;
-        public float lerp = 0.15f;
-
-        private static float positionJumpThreshold = 0.08f;
-        private static float rotationJumpThreshold = 24f;
-        private static float positionRecoverThreshold = 0.04f;
-        private static float rotationRecoverThreshold = 12f;
-        private static int maxPendingList = 15;
-        private List<Vector3> pendingPositionList = new List<Vector3>();
-        private List<Quaternion> pendingRotationList = new List<Quaternion>();
-
-        /// <summary>
-        /// When smoothing is enabled, the new pose will be filtered with current pose using lerp. Big sudden change of 6-DOF pose will be prohibited.
-        /// </summary>
-        /// <param name="localToWorldMatrix">The localToWorldMatrix.</param>
-        public void SetMatrix4x4(Matrix4x4 localToWorldMatrix)
-        {
-            Vector3 previousPosition = transform.localPosition;
-            Quaternion previousRotation = transform.localRotation;
-
-            Vector3 targetPosition = ARUtils.ExtractTranslationFromMatrix(ref localToWorldMatrix);
-            Quaternion targetRotation = ARUtils.ExtractRotationFromMatrix(ref localToWorldMatrix);
-
-            if (!smoothing)
-            {
-                transform.localRotation = targetRotation;
-                transform.localPosition = targetPosition;
-            }
-            else
-            {
-                float positionDiff = Vector3.Distance(targetPosition, previousPosition);
-                float rotationDiff = Quaternion.Angle(targetRotation, previousRotation);
-
-                if (Mathf.Abs(positionDiff) < positionJumpThreshold && Mathf.Abs(rotationDiff) < rotationJumpThreshold)
-                {
-                    transform.localRotation = Quaternion.Slerp(previousRotation, targetRotation, lerp);
-                    transform.localPosition = Vector3.Lerp(previousPosition, targetPosition, lerp);
-                    pendingPositionList.Clear();
-                    pendingRotationList.Clear();
-                }
-                else
-                {
-                    // maybe there is a jump
-                    pendingPositionList.Add(targetPosition);
-                    pendingRotationList.Add(targetRotation);
-                    bool confirmJump = true;
-                    if (pendingPositionList.Count > maxPendingList)
-                    {
-                        for (int i = 0; i < maxPendingList - 1; i++)
-                        {
-                            float tempPositionDiff = Vector3.Distance(pendingPositionList[pendingPositionList.Count - i - 1], pendingPositionList[pendingPositionList.Count - i - 2]);
-                            float tempRotationDiff = Quaternion.Angle(pendingRotationList[pendingRotationList.Count - i - 1], pendingRotationList[pendingRotationList.Count - i - 2]);
-                            if (Mathf.Abs(tempPositionDiff) > positionRecoverThreshold || Mathf.Abs(tempRotationDiff) > rotationRecoverThreshold)
-                            {
-                                confirmJump = false;
-                                break;
-                            }
-                        }
-                        if (confirmJump)
-                        {
-                            transform.localRotation = targetRotation;
-                            transform.localPosition = targetPosition;
-                            pendingPositionList.Clear();
-                            pendingRotationList.Clear();
-                        }
-                    }
-                }
-            }
-        }
-    }
+using OpenCVForUnity.UnityUtils;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    /// <summary>
+    /// AR Game Object
+    /// Referring to https://github.com/qian256/HoloLensARToolKit/blob/master/HoloLensARToolKit/Assets/ARToolKitUWP/Scripts/ARUWPTarget.cs.
+    /// </summary>
+    public class ARGameObject : MonoBehaviour
+    {
+        public bool smoothing = true;
+        public float lerp = 0.15f;
+
+        private static float positionJumpThreshold = 0.08f;
+        private static float rotationJumpThreshold = 24f;
+        private static float positionRecoverThreshold = 0.04f;
+        private static float rotationRecoverThreshold = 12f;
+        private static int maxPendingList = 15;
+        private List<Vector3> pendingPositionList = new List<Vector3>();
+        private List<Quaternion> pendingRotationList = new List<Quaternion>();
+
+        /// <summary>
+        /// When smoothing is enabled, the new pose will be filtered with current pose using lerp. Big sudden change of 6-DOF pose will be prohibited.
+        /// </summary>
+        /// <param name="localToWorldMatrix">The localToWorldMatrix.</param>
+        public void SetMatrix4x4(Matrix4x4 localToWorldMatrix)
+        {
+            Vector3 previousPosition = transform.localPosition;
+            Quaternion previousRotation = transform.localRotation;
+
+            Vector3 targetPosition = ARUtils.ExtractTranslationFromMatrix(ref localToWorldMatrix);
+            Quaternion targetRotation = ARUtils.ExtractRotationFromMatrix(ref localToWorldMatrix);
+
+            if (!smoothing)
+            {
+                transform.localRotation = targetRotation;
+                transform.localPosition = targetPosition;
+            }
+            else
+            {
+                float positionDiff = Vector3.Distance(targetPosition, previousPosition);
+                float rotationDiff = Quaternion.Angle(targetRotation, previousRotation);
+
+                if (Mathf.Abs(positionDiff) < positionJumpThreshold && Mathf.Abs(rotationDiff) < rotationJumpThreshold)
+                {
+                    transform.localRotation = Quaternion.Slerp(previousRotation, targetRotation, lerp);
+                    transform.localPosition = Vector3.Lerp(previousPosition, targetPosition, lerp);
+                    pendingPositionList.Clear();
+                    pendingRotationList.Clear();
+                }
+                else
+                {
+                    // maybe there is a jump
+                    pendingPositionList.Add(targetPosition);
+                    pendingRotationList.Add(targetRotation);
+                    bool confirmJump = true;
+                    if (pendingPositionList.Count > maxPendingList)
+                    {
+                        for (int i = 0; i < maxPendingList - 1; i++)
+                        {
+                            float tempPositionDiff = Vector3.Distance(pendingPositionList[pendingPositionList.Count - i - 1], pendingPositionList[pendingPositionList.Count - i - 2]);
+                            float tempRotationDiff = Quaternion.Angle(pendingRotationList[pendingRotationList.Count - i - 1], pendingRotationList[pendingRotationList.Count - i - 2]);
+                            if (Mathf.Abs(tempPositionDiff) > positionRecoverThreshold || Mathf.Abs(tempRotationDiff) > rotationRecoverThreshold)
+                            {
+                                confirmJump = false;
+                                break;
+                            }
+                        }
+                        if (confirmJump)
+                        {
+                            transform.localRotation = targetRotation;
+                            transform.localPosition = targetPosition;
+                            pendingPositionList.Clear();
+                            pendingRotationList.Clear();
+                        }
+                    }
+                }
+            }
+        }
+    }
 }
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/DebugUtils.cs b/Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/DebugUtils.cs
index 80d8200..74df8e9 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/DebugUtils.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/DebugUtils.cs
@@ -1,91 +1,91 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    public static class DebugUtils
-    {
-        private static Queue<long> qRenderTick = new Queue<long>();
-
-        private static Queue<long> qVideoTick = new Queue<long>();
-
-        private static Queue<long> qTrackTick = new Queue<long>();
-
-        private static StringBuilder sb = new StringBuilder(1000);
-
-        public static void RenderTick()
-        {
-            while (qRenderTick.Count > 49)
-            {
-                qRenderTick.Dequeue();
-            }
-            qRenderTick.Enqueue(DateTime.Now.Ticks);
-        }
-
-        public static float GetRenderDeltaTime()
-        {
-            if (qRenderTick.Count == 0)
-            {
-                return float.PositiveInfinity;
-            }
-            return (DateTime.Now.Ticks - qRenderTick.Peek()) / 500000.0f;
-        }
-
-        public static void VideoTick()
-        {
-            while (qVideoTick.Count > 49)
-            {
-                qVideoTick.Dequeue();
-            }
-            qVideoTick.Enqueue(DateTime.Now.Ticks);
-        }
-
-        public static float GetVideoDeltaTime()
-        {
-            if (qVideoTick.Count == 0)
-            {
-                return float.PositiveInfinity;
-            }
-            return (DateTime.Now.Ticks - qVideoTick.Peek()) / 500000.0f;
-        }
-
-        public static void TrackTick()
-        {
-            while (qTrackTick.Count > 49)
-            {
-                qTrackTick.Dequeue();
-            }
-            qTrackTick.Enqueue(DateTime.Now.Ticks);
-        }
-
-        public static float GetTrackDeltaTime()
-        {
-            if (qTrackTick.Count == 0)
-            {
-                return float.PositiveInfinity;
-            }
-            return (DateTime.Now.Ticks - qTrackTick.Peek()) / 500000.0f;
-        }
-
-        public static void AddDebugStr(string str)
-        {
-            sb.AppendLine(str);
-        }
-
-        public static void ClearDebugStr()
-        {
-            sb.Clear();
-        }
-
-        public static string GetDebugStr()
-        {
-            return sb.ToString();
-        }
-
-        public static int GetDebugStrLength()
-        {
-            return sb.Length;
-        }
-    }
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    public static class DebugUtils
+    {
+        private static Queue<long> qRenderTick = new Queue<long>();
+
+        private static Queue<long> qVideoTick = new Queue<long>();
+
+        private static Queue<long> qTrackTick = new Queue<long>();
+
+        private static StringBuilder sb = new StringBuilder(1000);
+
+        public static void RenderTick()
+        {
+            while (qRenderTick.Count > 49)
+            {
+                qRenderTick.Dequeue();
+            }
+            qRenderTick.Enqueue(DateTime.Now.Ticks);
+        }
+
+        public static float GetRenderDeltaTime()
+        {
+            if (qRenderTick.Count == 0)
+            {
+                return float.PositiveInfinity;
+            }
+            return (DateTime.Now.Ticks - qRenderTick.Peek()) / 500000.0f;
+        }
+
+        public static void VideoTick()
+        {
+            while (qVideoTick.Count > 49)
+            {
+                qVideoTick.Dequeue();
+            }
+            qVideoTick.Enqueue(DateTime.Now.Ticks);
+        }
+
+        public static float GetVideoDeltaTime()
+        {
+            if (qVideoTick.Count == 0)
+            {
+                return float.PositiveInfinity;
+            }
+            return (DateTime.Now.Ticks - qVideoTick.Peek()) / 500000.0f;
+        }
+
+        public static void TrackTick()
+        {
+            while (qTrackTick.Count > 49)
+            {
+                qTrackTick.Dequeue();
+            }
+            qTrackTick.Enqueue(DateTime.Now.Ticks);
+        }
+
+        public static float GetTrackDeltaTime()
+        {
+            if (qTrackTick.Count == 0)
+            {
+                return float.PositiveInfinity;
+            }
+            return (DateTime.Now.Ticks - qTrackTick.Peek()) / 500000.0f;
+        }
+
+        public static void AddDebugStr(string str)
+        {
+            sb.AppendLine(str);
+        }
+
+        public static void ClearDebugStr()
+        {
+            sb.Clear();
+        }
+
+        public static string GetDebugStr()
+        {
+            return sb.ToString();
+        }
+
+        public static int GetDebugStrLength()
+        {
+            return sb.Length;
+        }
+    }
 }
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/HololensCameraStreamToMatHelper.cs b/Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/HLCameraStreamToMatHelper.cs
similarity index 76%
rename from Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/HololensCameraStreamToMatHelper.cs
rename to Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/HLCameraStreamToMatHelper.cs
index 8cc2f4e..b476b62 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/HololensCameraStreamToMatHelper.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/HLCameraStreamToMatHelper.cs
@@ -1,899 +1,1134 @@
-#pragma warning disable 0067
-#if !DISABLE_HOLOLENSCAMSTREAM_API
-using HoloLensCameraStream;
-using OpenCVForUnity.UnityUtils;
-#endif
-using OpenCVForUnity.CoreModule;
-using OpenCVForUnity.UnityUtils.Helper;
-using OpenCVForUnity.UtilsModule;
-using OpenCVForUnity.ImgprocModule;
-using System;
-using System.Collections;
-using System.Linq;
-using UnityEngine;
-
-namespace HoloLensWithOpenCVForUnity.UnityUtils.Helper
-{
-    /// <summary>
-    /// This is called every time there is a new frame image mat available.
-    /// The Mat object's type is 'CV_8UC4' or 'CV_8UC3' or 'CV_8UC1' (ColorFormat is determined by the outputColorFormat setting).
-    /// </summary>
-    /// <param name="videoCaptureSample">The recently captured frame image mat.</param>
-    /// <param name="projectionMatrix">The projection matrices.</param>
-    /// <param name="cameraToWorldMatrix">The camera to world matrices.</param>
-    /// <param name="cameraIntrinsics">The camera intrinsics.</param>
-    public delegate void FrameMatAcquiredCallback(Mat mat, Matrix4x4 projectionMatrix, Matrix4x4 cameraToWorldMatrix, CameraIntrinsics cameraIntrinsics);
-
-    /// <summary>
-    /// Hololens camera stream to mat helper.
-    /// v 1.0.5
-    /// Depends on camnewnham/HoloLensCameraStream (https://github.com/camnewnham/HoloLensCameraStream).
-    /// Depends on OpenCVForUnity version 2.4.1 (WebCamTextureToMatHelper v 1.1.2) or later.
-    /// 
-    /// By setting outputColorFormat to BGRA or GRAY, processing that does not include extra color conversion is performed.
-    /// 
-    /// Combination of camera frame size and frame rate that can be acquired on Hololens. (width x height : framerate)
-    /// (See https://docs.microsoft.com/ja-jp/windows/mixed-reality/develop/platform-capabilities-and-apis/locatable-camera)
-    /// 
-    /// [1280x720] - Suggested usage : (default mode with video stabilization)
-    /// 1280 x 720 : 30
-    /// 1280 x 720 : 24
-    /// 1280 x 720 : 20
-    /// 1280 x 720 : 15
-    /// 1280 x 720 : 5
-    /// 
-    /// [1408x792] - Suggested usage : Overscan (padding) resolution before video stabilization
-    /// 1408 x 792 : 30
-    /// 1408 x 792 : 24
-    /// 1408 x 792 : 20
-    /// 1408 x 792 : 15
-    /// 1408 x 792 : 5
-    /// 
-    /// [1344x756] - Suggested usage : Large FOV video mode with overscan
-    /// 1344 x 756 : 30
-    /// 1344 x 756 : 24
-    /// 1344 x 756 : 20
-    /// 1344 x 756 : 15
-    /// 1344 x 756 : 5
-    /// 
-    /// [896x504] - Suggested usage : Low power / Low resolution mode for image processing tasks
-    /// 896 x 504 : 30
-    /// 896 x 504 : 24
-    /// 896 x 504 : 20
-    /// 896 x 504 : 15
-    /// 896 x 504 : 5
-    /// 
-    /// </summary>
-    public class HololensCameraStreamToMatHelper : WebCamTextureToMatHelper
-    {
-        /// <summary>
-        /// This will be called whenever a new camera frame image available is converted to Mat.
-        /// The Mat object's type is 'CV_8UC4' or 'CV_8UC3' or 'CV_8UC1' (ColorFormat is determined by the outputColorFormat setting).
-        /// You must properly initialize the HololensCameraStreamToMatHelper, 
-        /// including calling Play() before this event will begin firing.
-        /// </summary>
-        public virtual event FrameMatAcquiredCallback frameMatAcquired;
-
-        protected CameraIntrinsics cameraIntrinsics;
-
-        /// <summary>
-        /// Returns the camera intrinsics.
-        /// </summary>
-        /// <returns>The camera intrinsics.</returns>
-        public virtual CameraIntrinsics GetCameraIntrinsics()
-        {
-            return cameraIntrinsics;
-        }
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-        public override float requestedFPS
-        {
-            get { return _requestedFPS; }
-            set
-            {
-                _requestedFPS = Mathf.Clamp(value, -1f, float.MaxValue);
-                if (hasInitDone)
-                {
-                    Initialize();
-                }
-            }
-        }
-
-        new protected ColorFormat baseColorFormat = ColorFormat.BGRA;
-
-        protected System.Object lockObject = new System.Object();
-        protected System.Object matrixLockObject = new System.Object();
-        protected System.Object latestImageBytesLockObject = new System.Object();
-
-        protected HoloLensCameraStream.VideoCapture videoCapture;
-        protected HoloLensCameraStream.CameraParameters cameraParams;
-
-        protected Matrix4x4 _cameraToWorldMatrix = Matrix4x4.identity;
-        protected Matrix4x4 cameraToWorldMatrix
-        {
-            get
-            {
-                lock (matrixLockObject)
-                    return _cameraToWorldMatrix;
-            }
-            set
-            {
-                lock (matrixLockObject)
-                    _cameraToWorldMatrix = value;
-            }
-        }
-
-        protected Matrix4x4 _projectionMatrix = Matrix4x4.identity;
-        protected Matrix4x4 projectionMatrix
-        {
-            get
-            {
-                lock (matrixLockObject)
-                    return _projectionMatrix;
-            }
-            set
-            {
-                lock (matrixLockObject)
-                    _projectionMatrix = value;
-            }
-        }
-
-        protected bool _didUpdateThisFrame = false;
-        protected bool didUpdateThisFrame
-        {
-            get
-            {
-                lock (lockObject)
-                    return _didUpdateThisFrame;
-            }
-            set
-            {
-                lock (lockObject)
-                    _didUpdateThisFrame = value;
-            }
-        }
-
-        protected bool _didUpdateImageBufferInCurrentFrame = false;
-        protected bool didUpdateImageBufferInCurrentFrame
-        {
-            get
-            {
-                lock (lockObject)
-                    return _didUpdateImageBufferInCurrentFrame;
-            }
-            set
-            {
-                lock (lockObject)
-                    _didUpdateImageBufferInCurrentFrame = value;
-            }
-        }
-
-        protected byte[] _latestImageBytes;
-        protected byte[] latestImageBytes
-        {
-            get
-            {
-                lock (latestImageBytesLockObject)
-                    return _latestImageBytes;
-            }
-            set
-            {
-                lock (latestImageBytesLockObject)
-                    _latestImageBytes = value;
-            }
-        }
-
-        protected IntPtr spatialCoordinateSystemPtr;
-
-        protected bool isChangeVideoModeWaiting = false;
-
-        protected bool _hasInitDone = false;
-        new protected bool hasInitDone
-        {
-            get
-            {
-                lock (lockObject)
-                    return _hasInitDone;
-            }
-            set
-            {
-                lock (lockObject)
-                    _hasInitDone = value;
-            }
-        }
-
-        protected bool _hasInitEventCompleted = false;
-        protected bool hasInitEventCompleted
-        {
-            get
-            {
-                lock (lockObject)
-                    return _hasInitEventCompleted;
-            }
-            set
-            {
-                lock (lockObject)
-                    _hasInitEventCompleted = value;
-            }
-        }
-
-        protected virtual void LateUpdate()
-        {
-            if (didUpdateThisFrame && !didUpdateImageBufferInCurrentFrame)
-                didUpdateThisFrame = false;
-
-            didUpdateImageBufferInCurrentFrame = false;
-        }
-
-        protected virtual void OnFrameSampleAcquired(VideoCaptureSample sample)
-        {
-            lock (latestImageBytesLockObject)
-            {
-                //When copying the bytes out of the buffer, you must supply a byte[] that is appropriately sized.
-                //You can reuse this byte[] until you need to resize it (for whatever reason).
-                if (_latestImageBytes == null || _latestImageBytes.Length < sample.dataLength)
-                {
-                    _latestImageBytes = new byte[sample.dataLength];
-                }
-                sample.CopyRawImageDataIntoBuffer(_latestImageBytes);
-            }
-
-            float[] cameraToWorldMatrixAsFloat;
-            if (sample.TryGetCameraToWorldMatrix(out cameraToWorldMatrixAsFloat) == false)
-            {
-                sample.Dispose();
-                return;
-            }
-
-            float[] projectionMatrixAsFloat;
-            if (sample.TryGetProjectionMatrix(out projectionMatrixAsFloat) == false)
-            {
-                sample.Dispose();
-                return;
-            }
-
-            // Right now we pass things across the pipe as a float array then convert them back into UnityEngine.Matrix using a utility method
-            projectionMatrix = LocatableCameraUtils.ConvertFloatArrayToMatrix4x4(projectionMatrixAsFloat);
-            cameraToWorldMatrix = LocatableCameraUtils.ConvertFloatArrayToMatrix4x4(cameraToWorldMatrixAsFloat);
-
-            cameraIntrinsics = sample.cameraIntrinsics;
-
-            sample.Dispose();
-
-            didUpdateThisFrame = true;
-            didUpdateImageBufferInCurrentFrame = true;
-
-            if (hasInitEventCompleted && frameMatAcquired != null)
-            {
-                Mat mat = new Mat(cameraParams.cameraResolutionHeight, cameraParams.cameraResolutionWidth, CvType.CV_8UC(Channels(outputColorFormat)));
-                if (baseColorFormat == outputColorFormat)
-                {
-                    MatUtils.copyToMat<byte>(latestImageBytes, mat);
-                }
-                else
-                {
-                    Mat baseMat = new Mat(cameraParams.cameraResolutionHeight, cameraParams.cameraResolutionWidth, CvType.CV_8UC(Channels(baseColorFormat)));
-                    MatUtils.copyToMat<byte>(latestImageBytes, baseMat);
-                    Imgproc.cvtColor(baseMat, mat, ColorConversionCodes(baseColorFormat, outputColorFormat));
-                }
-
-                if (_rotate90Degree)
-                {
-                    Mat rotatedFrameMat = new Mat(cameraParams.cameraResolutionWidth, cameraParams.cameraResolutionHeight, CvType.CV_8UC(Channels(outputColorFormat)));
-                    Core.rotate(mat, rotatedFrameMat, Core.ROTATE_90_CLOCKWISE);
-                    mat.Dispose();
-
-                    FlipMat(rotatedFrameMat, _flipVertical, _flipHorizontal);
-
-                    frameMatAcquired.Invoke(rotatedFrameMat, projectionMatrix, cameraToWorldMatrix, cameraIntrinsics);
-                }
-                else
-                {
-                    FlipMat(mat, _flipVertical, _flipHorizontal);
-
-                    frameMatAcquired.Invoke(mat, projectionMatrix, cameraToWorldMatrix, cameraIntrinsics);
-                }
-            }
-        }
-
-        protected virtual HoloLensCameraStream.CameraParameters CreateCameraParams(HoloLensCameraStream.VideoCapture videoCapture)
-        {
-            int min1 = videoCapture.GetSupportedResolutions().Min(r => Mathf.Abs((r.width * r.height) - (_requestedWidth * _requestedHeight)));
-            HoloLensCameraStream.Resolution resolution = videoCapture.GetSupportedResolutions().First(r => Mathf.Abs((r.width * r.height) - (_requestedWidth * _requestedHeight)) == min1);
-
-            float min2 = videoCapture.GetSupportedFrameRatesForResolution(resolution).Min(f => Mathf.Abs(f - _requestedFPS));
-            float frameRate = videoCapture.GetSupportedFrameRatesForResolution(resolution).First(f => Mathf.Abs(f - _requestedFPS) == min2);
-
-            HoloLensCameraStream.CameraParameters cameraParams = new HoloLensCameraStream.CameraParameters();
-            cameraParams.cameraResolutionHeight = resolution.height;
-            cameraParams.cameraResolutionWidth = resolution.width;
-            cameraParams.frameRate = Mathf.RoundToInt(frameRate);
-            cameraParams.pixelFormat = (outputColorFormat == ColorFormat.GRAY) ? CapturePixelFormat.NV12 : CapturePixelFormat.BGRA32;
-            cameraParams.rotateImage180Degrees = false;
-            cameraParams.enableHolograms = false;
-            cameraParams.enableVideoStabilization = false;
-            cameraParams.recordingIndicatorVisible = false;
-
-            return cameraParams;
-        }
-#endif
-
-        /// <summary>
-        /// Returns the video capture.
-        /// </summary>
-        /// <returns>The video capture.</returns>
-        public virtual HoloLensCameraStream.VideoCapture GetVideoCapture()
-        {
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-            return videoCapture;
-#else
-            return null;
-#endif
-        }
-
-#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
-        // Update is called once per frame
-        protected override void Update() { }
-
-        /// <summary>
-        /// Raises the destroy event.
-        /// </summary>
-        protected override void OnDestroy()
-        {
-            Dispose();
-
-            if (videoCapture != null)
-            {
-                if (videoCapture.IsStreaming)
-                {
-                    videoCapture.StopVideoModeAsync(result =>
-                    {
-                        videoCapture.Dispose();
-                        videoCapture = null;
-                    });
-                }
-                else
-                {
-                    videoCapture.Dispose();
-                    videoCapture = null;
-                }
-            }
-        }
-
-        /// <summary>
-        /// Initializes this instance by coroutine.
-        /// </summary>
-        protected override IEnumerator _Initialize()
-        {
-            if (hasInitDone)
-            {
-                StartCoroutine(_Stop());
-
-                while (isChangeVideoModeWaiting)
-                {
-                    yield return null;
-                }
-
-                ReleaseResources();
-
-                if (onDisposed != null)
-                    onDisposed.Invoke();
-            }
-
-            isInitWaiting = true;
-
-            while (isChangeVideoModeWaiting)
-            {
-                yield return null;
-            }
-
-            isChangeVideoModeWaiting = true;
-            if (videoCapture != null)
-            {
-                videoCapture.StopVideoModeAsync(result1 =>
-                {
-                    cameraParams = CreateCameraParams(videoCapture);
-                    videoCapture.StartVideoModeAsync(cameraParams, result2 =>
-                    {
-                        if (!result2.success)
-                        {
-                            isChangeVideoModeWaiting = false;
-                            isInitWaiting = false;
-                            CancelInitCoroutine();
-
-                            if (onErrorOccurred != null)
-                                onErrorOccurred.Invoke(ErrorCode.UNKNOWN);
-                        }
-                        else
-                        {
-                            isChangeVideoModeWaiting = false;
-                        }
-                    });
-                });
-            }
-            else
-            {
-
-                //Fetch a pointer to Unity's spatial coordinate system if you need pixel mapping
-#if UNITY_2017_2_OR_NEWER
-                spatialCoordinateSystemPtr = UnityEngine.XR.WSA.WorldManager.GetNativeISpatialCoordinateSystemPtr();
-#else
-                spatialCoordinateSystemPtr = UnityEngine.VR.WSA.WorldManager.GetNativeISpatialCoordinateSystemPtr ();
-#endif
-
-                HoloLensCameraStream.VideoCapture.CreateAync(videoCapture =>
-                {
-
-                    if (initCoroutine == null) return;
-
-                    if (videoCapture == null)
-                    {
-                        Debug.LogError("Did not find a video capture object. You may not be using the HoloLens.");
-
-                        isChangeVideoModeWaiting = false;
-                        isInitWaiting = false;
-                        CancelInitCoroutine();
-
-                        if (onErrorOccurred != null)
-                            onErrorOccurred.Invoke(ErrorCode.CAMERA_DEVICE_NOT_EXIST);
-
-                        return;
-                    }
-
-                    this.videoCapture = videoCapture;
-
-                    //Request the spatial coordinate ptr if you want fetch the camera and set it if you need to 
-                    videoCapture.WorldOriginPtr = spatialCoordinateSystemPtr;
-
-                    cameraParams = CreateCameraParams(videoCapture);
-
-                    videoCapture.FrameSampleAcquired -= OnFrameSampleAcquired;
-                    videoCapture.FrameSampleAcquired += OnFrameSampleAcquired;
-                    videoCapture.StartVideoModeAsync(cameraParams, result =>
-                    {
-                        if (!result.success)
-                        {
-                            isChangeVideoModeWaiting = false;
-                            isInitWaiting = false;
-                            CancelInitCoroutine();
-
-                            if (onErrorOccurred != null)
-                                onErrorOccurred.Invoke(ErrorCode.UNKNOWN);
-                        }
-                        else
-                        {
-                            isChangeVideoModeWaiting = false;
-                        }
-                    });
-                });
-            }
-
-            int initFrameCount = 0;
-            bool isTimeout = false;
-
-            while (true)
-            {
-                if (initFrameCount > _timeoutFrameCount)
-                {
-                    isTimeout = true;
-                    break;
-                }
-                else if (didUpdateThisFrame)
-                {
-                    Debug.Log("HololensCameraStreamToMatHelper:: " + "name:" + "" + " width:" + cameraParams.cameraResolutionWidth + " height:" + cameraParams.cameraResolutionHeight + " fps:" + cameraParams.frameRate);
-
-                    baseColorFormat = (outputColorFormat == ColorFormat.GRAY) ? ColorFormat.GRAY : ColorFormat.BGRA;
-
-                    baseMat = new Mat(cameraParams.cameraResolutionHeight, cameraParams.cameraResolutionWidth, CvType.CV_8UC(Channels(baseColorFormat)));
-
-                    if (baseColorFormat == outputColorFormat)
-                    {
-                        frameMat = baseMat;
-                    }
-                    else
-                    {
-                        frameMat = new Mat(baseMat.rows(), baseMat.cols(), CvType.CV_8UC(Channels(outputColorFormat)));
-                    }
-
-                    if (_rotate90Degree)
-                        rotatedFrameMat = new Mat(frameMat.cols(), frameMat.rows(), CvType.CV_8UC(Channels(outputColorFormat)));
-
-                    isInitWaiting = false;
-                    hasInitDone = true;
-                    initCoroutine = null;
-
-                    if (onInitialized != null)
-                        onInitialized.Invoke();
-
-                    hasInitEventCompleted = true;
-
-                    break;
-                }
-                else
-                {
-                    initFrameCount++;
-                    yield return null;
-                }
-            }
-
-            if (isTimeout)
-            {
-                if (videoCapture != null)
-                {
-                    videoCapture.FrameSampleAcquired -= OnFrameSampleAcquired;
-
-                    isChangeVideoModeWaiting = true;
-                    videoCapture.StopVideoModeAsync(result =>
-                    {
-                        videoCapture.Dispose();
-                        videoCapture = null;
-                        isChangeVideoModeWaiting = false;
-                    });
-
-                    isInitWaiting = false;
-                    initCoroutine = null;
-
-                    if (onErrorOccurred != null)
-                        onErrorOccurred.Invoke(ErrorCode.TIMEOUT);
-                }
-                else
-                {
-                    isInitWaiting = false;
-                    initCoroutine = null;
-
-                    if (onErrorOccurred != null)
-                        onErrorOccurred.Invoke(ErrorCode.TIMEOUT);
-                }
-            }
-        }
-
-        /// <summary>
-        /// Indicates whether this instance has been initialized.
-        /// </summary>
-        /// <returns><c>true</c>, if this instance has been initialized, <c>false</c> otherwise.</returns>
-        public override bool IsInitialized()
-        {
-            return hasInitDone;
-        }
-
-        /// <summary>
-        /// Starts the camera.
-        /// </summary>
-        public override void Play()
-        {
-            if (hasInitDone)
-                StartCoroutine(_Play());
-        }
-
-        protected virtual IEnumerator _Play()
-        {
-            while (isChangeVideoModeWaiting)
-            {
-                yield return null;
-            }
-
-            if (!hasInitDone || videoCapture.IsStreaming) yield break;
-
-            isChangeVideoModeWaiting = true;
-            videoCapture.StartVideoModeAsync(cameraParams, result =>
-            {
-                isChangeVideoModeWaiting = false;
-            });
-        }
-
-        /// <summary>
-        /// Pauses the active camera.
-        /// </summary>
-        public override void Pause()
-        {
-            if (hasInitDone)
-                StartCoroutine(_Stop());
-        }
-
-        /// <summary>
-        /// Stops the active camera.
-        /// </summary>
-        public override void Stop()
-        {
-            if (hasInitDone)
-                StartCoroutine(_Stop());
-        }
-
-        protected virtual IEnumerator _Stop()
-        {
-            while (isChangeVideoModeWaiting)
-            {
-                yield return null;
-            }
-
-            if (!hasInitDone || !videoCapture.IsStreaming) yield break;
-
-            isChangeVideoModeWaiting = true;
-            videoCapture.StopVideoModeAsync(result =>
-            {
-                isChangeVideoModeWaiting = false;
-            });
-        }
-
-        /// <summary>
-        /// Indicates whether the active camera is currently playing.
-        /// </summary>
-        /// <returns><c>true</c>, if the active camera is playing, <c>false</c> otherwise.</returns>
-        public override bool IsPlaying()
-        {
-            if (!hasInitDone)
-                return false;
-
-            return videoCapture.IsStreaming;
-        }
-
-        /// <summary>
-        /// Indicates whether the active camera device is currently front facng.
-        /// </summary>
-        /// <returns><c>true</c>, if the active camera device is front facng, <c>false</c> otherwise.</returns>
-        public override bool IsFrontFacing()
-        {
-            return false;
-        }
-
-        /// <summary>
-        /// Returns the active camera device name.
-        /// </summary>
-        /// <returns>The active camera device name.</returns>
-        public override string GetDeviceName()
-        {
-            return "";
-        }
-
-        /// <summary>
-        /// Returns the active camera width.
-        /// </summary>
-        /// <returns>The active camera width.</returns>
-        public override int GetWidth()
-        {
-            if (!hasInitDone)
-                return -1;
-            return (rotatedFrameMat != null) ? cameraParams.cameraResolutionHeight : cameraParams.cameraResolutionWidth;
-        }
-
-        /// <summary>
-        /// Returns the active camera height.
-        /// </summary>
-        /// <returns>The active camera height.</returns>
-        public override int GetHeight()
-        {
-            if (!hasInitDone)
-                return -1;
-            return (rotatedFrameMat != null) ? cameraParams.cameraResolutionWidth : cameraParams.cameraResolutionHeight;
-        }
-
-        /// <summary>
-        /// Returns the active camera framerate.
-        /// </summary>
-        /// <returns>The active camera framerate.</returns>
-        public override float GetFPS()
-        {
-            return hasInitDone ? cameraParams.frameRate : -1f;
-        }
-
-        /// <summary>
-        /// Returns the webcam texture.
-        /// </summary>
-        /// <returns>The webcam texture.</returns>
-        public override WebCamTexture GetWebCamTexture()
-        {
-            return null;
-        }
-
-        /// <summary>
-        /// Returns the camera to world matrix.
-        /// </summary>
-        /// <returns>The camera to world matrix.</returns>
-        public override Matrix4x4 GetCameraToWorldMatrix()
-        {
-            return cameraToWorldMatrix;
-        }
-
-        /// <summary>
-        /// Returns the projection matrix matrix.
-        /// </summary>
-        /// <returns>The projection matrix.</returns>
-        public override Matrix4x4 GetProjectionMatrix()
-        {
-            return projectionMatrix;
-        }
-
-        /// <summary>
-        /// Indicates whether the video buffer of the frame has been updated.
-        /// </summary>
-        /// <returns><c>true</c>, if the video buffer has been updated <c>false</c> otherwise.</returns>
-        public override bool DidUpdateThisFrame()
-        {
-            if (!hasInitDone)
-                return false;
-
-            return didUpdateThisFrame;
-        }
-
-        /// <summary>
-        /// Gets the mat of the current frame.
-        /// The Mat object's type is 'CV_8UC4' or 'CV_8UC3' or 'CV_8UC1' (ColorFormat is determined by the outputColorFormat setting).
-        /// Please do not dispose of the returned mat as it will be reused.
-        /// </summary>
-        /// <returns>The mat of the current frame.</returns>
-        public override Mat GetMat()
-        {
-            if (!hasInitDone || !videoCapture.IsStreaming || latestImageBytes == null)
-            {
-                return (rotatedFrameMat != null) ? rotatedFrameMat : frameMat;
-            }
-
-            if (baseColorFormat == outputColorFormat)
-            {
-                MatUtils.copyToMat<byte>(latestImageBytes, frameMat);
-            }
-            else
-            {
-                MatUtils.copyToMat<byte>(latestImageBytes, baseMat);
-                Imgproc.cvtColor(baseMat, frameMat, ColorConversionCodes(baseColorFormat, outputColorFormat));
-            }
-
-            if (rotatedFrameMat != null)
-            {
-                Core.rotate(frameMat, rotatedFrameMat, Core.ROTATE_90_CLOCKWISE);
-                FlipMat(rotatedFrameMat, _flipVertical, _flipHorizontal);
-
-                return rotatedFrameMat;
-            }
-            else
-            {
-                FlipMat(frameMat, _flipVertical, _flipHorizontal);
-
-                return frameMat;
-            }
-        }
-
-        /// <summary>
-        /// Flips the mat.
-        /// </summary>
-        /// <param name="mat">Mat.</param>
-        protected override void FlipMat(Mat mat, bool flipVertical, bool flipHorizontal)
-        {
-            int flipCode = int.MinValue;
-
-            if (_flipVertical)
-            {
-                if (flipCode == int.MinValue)
-                {
-                    flipCode = 0;
-                }
-                else if (flipCode == 0)
-                {
-                    flipCode = int.MinValue;
-                }
-                else if (flipCode == 1)
-                {
-                    flipCode = -1;
-                }
-                else if (flipCode == -1)
-                {
-                    flipCode = 1;
-                }
-            }
-
-            if (_flipHorizontal)
-            {
-                if (flipCode == int.MinValue)
-                {
-                    flipCode = 1;
-                }
-                else if (flipCode == 0)
-                {
-                    flipCode = -1;
-                }
-                else if (flipCode == 1)
-                {
-                    flipCode = int.MinValue;
-                }
-                else if (flipCode == -1)
-                {
-                    flipCode = 0;
-                }
-            }
-
-            if (flipCode > int.MinValue)
-            {
-                Core.flip(mat, mat, flipCode);
-            }
-        }
-
-        /// <summary>
-        /// To release the resources.
-        /// </summary>
-        protected override void ReleaseResources()
-        {
-            isInitWaiting = false;
-            hasInitDone = false;
-            hasInitEventCompleted = false;
-
-            latestImageBytes = null;
-            didUpdateThisFrame = false;
-            didUpdateImageBufferInCurrentFrame = false;
-
-            if (frameMat != null)
-            {
-                frameMat.Dispose();
-                frameMat = null;
-            }
-            if (baseMat != null)
-            {
-                baseMat.Dispose();
-                baseMat = null;
-            }
-            if (rotatedFrameMat != null)
-            {
-                rotatedFrameMat.Dispose();
-                rotatedFrameMat = null;
-            }
-        }
-
-        /// <summary>
-        /// Releases all resource used by the <see cref="WebCamTextureToMatHelper"/> object.
-        /// </summary>
-        /// <remarks>Call <see cref="Dispose"/> when you are finished using the <see cref="WebCamTextureToMatHelper"/>. The
-        /// <see cref="Dispose"/> method leaves the <see cref="WebCamTextureToMatHelper"/> in an unusable state. After
-        /// calling <see cref="Dispose"/>, you must release all references to the <see cref="WebCamTextureToMatHelper"/> so
-        /// the garbage collector can reclaim the memory that the <see cref="WebCamTextureToMatHelper"/> was occupying.</remarks>
-        public override void Dispose()
-        {
-            if (colors != null)
-                colors = null;
-
-            if (isInitWaiting)
-            {
-                CancelInitCoroutine();
-
-                frameMatAcquired = null;
-
-                if (videoCapture != null)
-                {
-                    videoCapture.FrameSampleAcquired -= OnFrameSampleAcquired;
-
-                    StartCoroutine(_Dispose());
-                }
-
-                ReleaseResources();
-            }
-            else if (hasInitDone)
-            {
-                frameMatAcquired = null;
-
-                videoCapture.FrameSampleAcquired -= OnFrameSampleAcquired;
-
-                StartCoroutine(_Dispose());
-
-                ReleaseResources();
-
-                if (onDisposed != null)
-                    onDisposed.Invoke();
-            }
-        }
-
-        protected virtual IEnumerator _Dispose()
-        {
-            while (isChangeVideoModeWaiting)
-            {
-                yield return null;
-            }
-
-            isChangeVideoModeWaiting = true;
-            videoCapture.StopVideoModeAsync(result =>
-            {
-                videoCapture.Dispose();
-                videoCapture = null;
-                isChangeVideoModeWaiting = false;
-            });
-        }
-#endif
-    }
-}
\ No newline at end of file
+#pragma warning disable 0067
+#pragma warning disable 0618
+
+#if !OPENCV_DONT_USE_WEBCAMTEXTURE_API
+#if !(PLATFORM_LUMIN && !UNITY_EDITOR)
+
+#if !DISABLE_HOLOLENSCAMSTREAM_API
+using HoloLensCameraStream;
+using OpenCVForUnity.UnityUtils;
+#endif
+
+using OpenCVForUnity.CoreModule;
+using OpenCVForUnity.UnityUtils.Helper;
+using OpenCVForUnity.UtilsModule;
+using OpenCVForUnity.ImgprocModule;
+using System;
+using System.Collections;
+using System.Linq;
+using UnityEngine;
+
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API && XR_PLUGIN_OPENXR
+using Windows.Perception.Spatial;
+#endif
+
+namespace HoloLensWithOpenCVForUnity.UnityUtils.Helper
+{
+    /// <summary>
+    /// This is called every time there is a new frame image mat available.
+    /// The Mat object's type is 'CV_8UC4' or 'CV_8UC3' or 'CV_8UC1' (ColorFormat is determined by the outputColorFormat setting).
+    /// </summary>
+    /// <param name="videoCaptureSample">The recently captured frame image mat.</param>
+    /// <param name="projectionMatrix">The projection matrices.</param>
+    /// <param name="cameraToWorldMatrix">The camera to world matrices.</param>
+    /// <param name="cameraIntrinsics">The camera intrinsics.</param>
+    public delegate void FrameMatAcquiredCallback(Mat mat, Matrix4x4 projectionMatrix, Matrix4x4 cameraToWorldMatrix, CameraIntrinsics cameraIntrinsics);
+
+    /// <summary>
+    /// Hololens camera stream to mat helper.
+    /// v 1.0.6
+    /// Depends on EnoxSoftware/HoloLensCameraStream (https://github.com/EnoxSoftware/HoloLensCameraStream).
+    /// Depends on OpenCVForUnity version 2.4.1 (WebCamTextureToMatHelper v 1.1.2) or later.
+    /// 
+    /// By setting outputColorFormat to BGRA or GRAY, processing that does not include extra color conversion is performed.
+    /// 
+    /// Usage:
+    /// Add Define Symbols: "Open File > Build Settings > Player Settings > Other Settings" and add the following to Scripting Define Symbols depending on the XR system used in your project.
+    /// This is the setup needed to get the correct values from the TryGetCameraToWorldMatrix method.
+    ///    Legacy built-in XR                          ; "BUILTIN_XR"
+    ///    XR Plugin Management(Windows Mixed Reality) : "XR_PLUGIN_WINDOWSMR"
+    ///    XR Plugin Management(OpenXR)                : "XR_PLUGIN_OPENXR"
+    /// 
+    /// 
+    /// Combination of camera frame size and frame rate that can be acquired on Hololens. (width x height : framerate)
+    /// (See https://learn.microsoft.com/en-us/windows/mixed-reality/develop/advanced-concepts/locatable-camera-overview)
+    /// 
+    /// Hololens1
+    /// 
+    /// [1280x720] - Suggested usage : (default mode with video stabilization)
+    /// 1280 x 720 : 30
+    /// 1280 x 720 : 24
+    /// 1280 x 720 : 20
+    /// 1280 x 720 : 15
+    /// 1280 x 720 : 5
+    /// 
+    /// [1408x792] - Suggested usage : Overscan (padding) resolution before video stabilization
+    /// 1408 x 792 : 30
+    /// 1408 x 792 : 24
+    /// 1408 x 792 : 20
+    /// 1408 x 792 : 15
+    /// 1408 x 792 : 5
+    /// 
+    /// [1344x756] - Suggested usage : Large FOV video mode with overscan
+    /// 1344 x 756 : 30
+    /// 1344 x 756 : 24
+    /// 1344 x 756 : 20
+    /// 1344 x 756 : 15
+    /// 1344 x 756 : 5
+    /// 
+    /// [896x504] - Suggested usage : Low power / Low resolution mode for image processing tasks
+    /// 896 x 504 : 30
+    /// 896 x 504 : 24
+    /// 896 x 504 : 20
+    /// 896 x 504 : 15
+    /// 896 x 504 : 5
+    /// 
+    /// 
+    /// Hololens2
+    /// 
+    /// [1952x1100] - Suggested usage : Video conferencing, long duration scenarios
+    /// 1952x1100 : 60
+    /// 1952x1100 : 30
+    /// 1952x1100 : 15
+    /// 
+    /// [1504x846] - Suggested usage : Video conferencing, long duration scenarios
+    /// 1504x846 : 60
+    /// 1504x846 : 30
+    /// 1504x846 : 15
+    /// 1504x846 : 5
+    /// 
+    /// [1920x1080] - Suggested usage : Video conferencing, long duration scenarios
+    /// 1920x1080 : 30
+    /// 1920x1080 : 15
+    /// 
+    /// [1280x720] - Suggested usage : Video conferencing, long duration scenarios
+    /// 1280x720 : 30
+    /// 1280x720 : 15
+    /// 
+    /// [1128x636] - Suggested usage : Video conferencing, long duration scenarios
+    /// 1128x636 : 30
+    /// 1128x636 : 15
+    /// 
+    /// [960x540] - Suggested usage : Video conferencing, long duration scenarios
+    /// 960x540 : 30
+    /// 960x540 : 15
+    /// 
+    /// [760x428] - Suggested usage : Video conferencing, long duration scenarios
+    /// 760x428 : 30
+    /// 760x428 : 15
+    /// 
+    /// [640x360] - Suggested usage : Video conferencing, long duration scenarios
+    /// 640x360 : 30
+    /// 640x360 : 15
+    /// 
+    /// [500x282] - Suggested usage : Video conferencing, long duration scenarios
+    /// 500x282 : 30
+    /// 500x282 : 15
+    /// 
+    /// [424x240] - Suggested usage : Video conferencing, long duration scenarios
+    /// 424x240 : 30
+    /// 424x240 : 15
+    /// 
+    /// </summary>
+    public class HLCameraStreamToMatHelper : WebCamTextureToMatHelper
+    {
+        /// <summary>
+        /// This will be called whenever a new camera frame image available is converted to Mat.
+        /// The Mat object's type is 'CV_8UC4' or 'CV_8UC3' or 'CV_8UC1' (ColorFormat is determined by the outputColorFormat setting).
+        /// You must properly initialize the HLCameraStreamToMatHelper, 
+        /// including calling Play() before this event will begin firing.
+        /// </summary>
+        public virtual event FrameMatAcquiredCallback frameMatAcquired;
+
+        protected CameraIntrinsics cameraIntrinsics;
+
+        /// <summary>
+        /// Returns the camera intrinsics.
+        /// </summary>
+        /// <returns>The camera intrinsics.</returns>
+        public virtual CameraIntrinsics GetCameraIntrinsics()
+        {
+            return cameraIntrinsics;
+        }
+
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+
+        public override string requestedDeviceName
+        {
+            get { return _requestedDeviceName; }
+            set
+            {
+                if (_requestedDeviceName != value)
+                {
+                    _requestedDeviceName = value;
+                    if (hasInitDone)
+                        Initialize();
+                }
+            }
+        }
+
+        public override int requestedWidth
+        {
+            get { return _requestedWidth; }
+            set
+            {
+                int _value = (int)Mathf.Clamp(value, 0f, float.MaxValue);
+                if (_requestedWidth != _value)
+                {
+                    _requestedWidth = _value;
+                    if (hasInitDone)
+                        Initialize();
+                }
+            }
+        }
+
+        public override int requestedHeight
+        {
+            get { return _requestedHeight; }
+            set
+            {
+                int _value = (int)Mathf.Clamp(value, 0f, float.MaxValue);
+                if (_requestedHeight != _value)
+                {
+                    _requestedHeight = _value;
+                    if (hasInitDone)
+                        Initialize();
+                }
+            }
+        }
+
+        public override bool requestedIsFrontFacing
+        {
+            get { return _requestedIsFrontFacing; }
+            set
+            {
+                if (_requestedIsFrontFacing != value)
+                {
+                    _requestedIsFrontFacing = value;
+                    if (hasInitDone)
+                        Initialize(_requestedIsFrontFacing, requestedFPS, rotate90Degree);
+                }
+            }
+        }
+
+        public override bool rotate90Degree
+        {
+            get { return _rotate90Degree; }
+            set
+            {
+                if (_rotate90Degree != value)
+                {
+                    _rotate90Degree = value;
+                    if (hasInitDone)
+                        Initialize();
+                }
+            }
+        }
+
+        public override ColorFormat outputColorFormat
+        {
+            get { return _outputColorFormat; }
+            set
+            {
+                if (_outputColorFormat != value)
+                {
+                    _outputColorFormat = value;
+                    if (hasInitDone)
+                        Initialize();
+                }
+            }
+        }
+
+        public override float requestedFPS
+        {
+            get { return _requestedFPS; }
+            set
+            {
+                _requestedFPS = Mathf.Clamp(value, -1f, float.MaxValue);
+                if (hasInitDone)
+                {
+                    Initialize();
+                }
+            }
+        }
+
+        new protected ColorFormat baseColorFormat = ColorFormat.BGRA;
+
+        protected System.Object lockObject = new System.Object();
+        protected System.Object matrixLockObject = new System.Object();
+        protected System.Object latestImageBytesLockObject = new System.Object();
+
+        protected HoloLensCameraStream.VideoCapture videoCapture;
+        protected HoloLensCameraStream.CameraParameters cameraParams;
+
+        protected int frameSampleWidth;
+        protected int frameSampleHeight;
+
+        protected bool wasPlayingBeforeSuspended;
+
+        protected Matrix4x4 _cameraToWorldMatrix = Matrix4x4.identity;
+        protected Matrix4x4 cameraToWorldMatrix
+        {
+            get
+            {
+                lock (matrixLockObject)
+                    return _cameraToWorldMatrix;
+            }
+            set
+            {
+                lock (matrixLockObject)
+                    _cameraToWorldMatrix = value;
+            }
+        }
+
+        protected Matrix4x4 _projectionMatrix = Matrix4x4.identity;
+        protected Matrix4x4 projectionMatrix
+        {
+            get
+            {
+                lock (matrixLockObject)
+                    return _projectionMatrix;
+            }
+            set
+            {
+                lock (matrixLockObject)
+                    _projectionMatrix = value;
+            }
+        }
+
+        protected bool _didUpdateThisFrame = false;
+        protected bool didUpdateThisFrame
+        {
+            get
+            {
+                lock (lockObject)
+                    return _didUpdateThisFrame;
+            }
+            set
+            {
+                lock (lockObject)
+                    _didUpdateThisFrame = value;
+            }
+        }
+
+        protected bool _didUpdateImageBufferInCurrentFrame = false;
+        protected bool didUpdateImageBufferInCurrentFrame
+        {
+            get
+            {
+                lock (lockObject)
+                    return _didUpdateImageBufferInCurrentFrame;
+            }
+            set
+            {
+                lock (lockObject)
+                    _didUpdateImageBufferInCurrentFrame = value;
+            }
+        }
+
+        protected byte[] _latestImageBytes;
+        protected byte[] latestImageBytes
+        {
+            get
+            {
+                lock (latestImageBytesLockObject)
+                    return _latestImageBytes;
+            }
+            set
+            {
+                lock (latestImageBytesLockObject)
+                    _latestImageBytes = value;
+            }
+        }
+
+#if XR_PLUGIN_OPENXR
+        protected SpatialCoordinateSystem spatialCoordinateSystem;
+#elif XR_PLUGIN_WINDOWSMR || BUILTIN_XR
+        protected IntPtr spatialCoordinateSystemPtr;
+#endif
+
+        protected bool isChangeVideoModeWaiting = false;
+
+        protected bool _hasInitDone = false;
+        new protected bool hasInitDone
+        {
+            get
+            {
+                lock (lockObject)
+                    return _hasInitDone;
+            }
+            set
+            {
+                lock (lockObject)
+                    _hasInitDone = value;
+            }
+        }
+
+        protected bool _hasInitEventCompleted = false;
+        protected bool hasInitEventCompleted
+        {
+            get
+            {
+                lock (lockObject)
+                    return _hasInitEventCompleted;
+            }
+            set
+            {
+                lock (lockObject)
+                    _hasInitEventCompleted = value;
+            }
+        }
+
+        protected virtual void LateUpdate()
+        {
+            if (didUpdateThisFrame && !didUpdateImageBufferInCurrentFrame)
+                didUpdateThisFrame = false;
+
+            didUpdateImageBufferInCurrentFrame = false;
+        }
+
+        protected virtual void OnFrameSampleAcquired(VideoCaptureSample sample)
+        {
+            lock (latestImageBytesLockObject)
+            {
+                //When copying the bytes out of the buffer, you must supply a byte[] that is appropriately sized.
+                //You can reuse this byte[] until you need to resize it (for whatever reason).
+                if (_latestImageBytes == null || _latestImageBytes.Length < sample.dataLength)
+                {
+                    _latestImageBytes = new byte[sample.dataLength];
+                }
+                sample.CopyRawImageDataIntoBuffer(_latestImageBytes);
+            }
+
+            float[] cameraToWorldMatrixAsFloat;
+            if (sample.TryGetCameraToWorldMatrix(out cameraToWorldMatrixAsFloat) == false)
+            {
+                //sample.Dispose();
+                //return;
+            }
+
+            float[] projectionMatrixAsFloat;
+            if (sample.TryGetProjectionMatrix(out projectionMatrixAsFloat) == false)
+            {
+                //sample.Dispose();
+                //return;
+            }
+
+            // Right now we pass things across the pipe as a float array then convert them back into UnityEngine.Matrix using a utility method
+            projectionMatrix = LocatableCameraUtils.ConvertFloatArrayToMatrix4x4(projectionMatrixAsFloat);
+            cameraToWorldMatrix = LocatableCameraUtils.ConvertFloatArrayToMatrix4x4(cameraToWorldMatrixAsFloat);
+
+            cameraIntrinsics = sample.cameraIntrinsics;
+            frameSampleWidth = sample.FrameWidth;
+            frameSampleHeight = sample.FrameHeight;
+
+            sample.Dispose();
+
+            didUpdateThisFrame = true;
+            didUpdateImageBufferInCurrentFrame = true;
+
+            if (hasInitEventCompleted && frameMatAcquired != null)
+            {
+                Mat mat = new Mat(frameSampleHeight, frameSampleWidth, CvType.CV_8UC(Channels(outputColorFormat)));
+
+                if (baseColorFormat == outputColorFormat)
+                {
+                    MatUtils.copyToMat<byte>(latestImageBytes, mat);
+                }
+                else
+                {
+                    Mat baseMat = new Mat(frameSampleHeight, frameSampleWidth, CvType.CV_8UC(Channels(baseColorFormat)));
+                    MatUtils.copyToMat<byte>(latestImageBytes, baseMat);
+                    Imgproc.cvtColor(baseMat, mat, ColorConversionCodes(baseColorFormat, outputColorFormat));
+                }
+
+                if (_rotate90Degree)
+                {
+                    Mat rotatedFrameMat = new Mat(frameSampleWidth, frameSampleHeight, CvType.CV_8UC(Channels(outputColorFormat)));
+                    Core.rotate(mat, rotatedFrameMat, Core.ROTATE_90_CLOCKWISE);
+                    mat.Dispose();
+
+                    FlipMat(rotatedFrameMat, _flipVertical, _flipHorizontal);
+
+                    frameMatAcquired.Invoke(rotatedFrameMat, projectionMatrix, cameraToWorldMatrix, cameraIntrinsics);
+                }
+                else
+                {
+                    FlipMat(mat, _flipVertical, _flipHorizontal);
+
+                    frameMatAcquired.Invoke(mat, projectionMatrix, cameraToWorldMatrix, cameraIntrinsics);
+                }
+            }
+        }
+
+        protected virtual HoloLensCameraStream.CameraParameters CreateCameraParams(HoloLensCameraStream.VideoCapture videoCapture)
+        {
+            int min1 = videoCapture.GetSupportedResolutions().Min(r => Mathf.Abs((r.width * r.height) - (_requestedWidth * _requestedHeight)));
+            HoloLensCameraStream.Resolution resolution = videoCapture.GetSupportedResolutions().First(r => Mathf.Abs((r.width * r.height) - (_requestedWidth * _requestedHeight)) == min1);
+
+            float min2 = videoCapture.GetSupportedFrameRatesForResolution(resolution).Min(f => Mathf.Abs(f - _requestedFPS));
+            float frameRate = videoCapture.GetSupportedFrameRatesForResolution(resolution).First(f => Mathf.Abs(f - _requestedFPS) == min2);
+
+            HoloLensCameraStream.CameraParameters cameraParams = new HoloLensCameraStream.CameraParameters();
+            cameraParams.cameraResolutionHeight = resolution.height;
+            cameraParams.cameraResolutionWidth = resolution.width;
+            cameraParams.frameRate = Mathf.RoundToInt(frameRate);
+            cameraParams.pixelFormat = (outputColorFormat == ColorFormat.GRAY) ? CapturePixelFormat.NV12 : CapturePixelFormat.BGRA32;
+            cameraParams.rotateImage180Degrees = false;
+            cameraParams.enableHolograms = false;
+            cameraParams.enableVideoStabilization = false;
+            cameraParams.recordingIndicatorVisible = false;
+
+            return cameraParams;
+        }
+#endif
+
+        /// <summary>
+        /// Returns the video capture.
+        /// </summary>
+        /// <returns>The video capture.</returns>
+        public virtual HoloLensCameraStream.VideoCapture GetVideoCapture()
+        {
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+            return videoCapture;
+#else
+            return null;
+#endif
+        }
+
+#if WINDOWS_UWP && !DISABLE_HOLOLENSCAMSTREAM_API
+        // Update is called once per frame
+        protected override void Update() { }
+
+        protected override IEnumerator OnApplicationFocus(bool hasFocus)
+        {
+            while (isChangeVideoModeWaiting)
+            {
+                yield return null;
+            }
+
+            if (!hasInitDone) yield break;
+
+            if (hasFocus)
+            {
+                HoloLensCameraStream.VideoCapture.CreateAync(videoCapture =>
+                {
+                    this.videoCapture = videoCapture;
+
+                    //Request the spatial coordinate ptr if you want fetch the camera and set it if you need to 
+#if XR_PLUGIN_OPENXR
+                    videoCapture.WorldOrigin = spatialCoordinateSystem;
+#elif XR_PLUGIN_WINDOWSMR || BUILTIN_XR
+                    videoCapture.WorldOriginPtr = spatialCoordinateSystemPtr;
+#endif
+
+                    videoCapture.FrameSampleAcquired -= OnFrameSampleAcquired;
+                    videoCapture.FrameSampleAcquired += OnFrameSampleAcquired;
+
+                    if (wasPlayingBeforeSuspended)
+                    {
+                        isChangeVideoModeWaiting = true;
+                        videoCapture.StartVideoModeAsync(cameraParams, result =>
+                        {
+                            isChangeVideoModeWaiting = false;
+                        });
+                    }
+                });
+            }
+            else
+            {
+                wasPlayingBeforeSuspended = IsPlaying();
+
+                isChangeVideoModeWaiting = true;
+                videoCapture.StopVideoModeAsync(result =>
+                {
+                    videoCapture.Dispose();
+                    videoCapture = null;
+                    isChangeVideoModeWaiting = false;
+                });
+            }
+
+            yield break;
+        }
+
+        /// <summary>
+        /// Raises the destroy event.
+        /// </summary>
+        protected override void OnDestroy()
+        {
+            Dispose();
+
+            if (videoCapture != null)
+            {
+                if (videoCapture.IsStreaming)
+                {
+                    videoCapture.StopVideoModeAsync(result =>
+                    {
+                        videoCapture.Dispose();
+                        videoCapture = null;
+                    });
+                }
+                else
+                {
+                    videoCapture.Dispose();
+                    videoCapture = null;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Initializes this instance by coroutine.
+        /// </summary>
+        protected override IEnumerator _Initialize()
+        {
+            if (hasInitDone)
+            {
+                StartCoroutine(_Stop());
+
+                while (isChangeVideoModeWaiting)
+                {
+                    yield return null;
+                }
+
+                ReleaseResources();
+
+                if (onDisposed != null)
+                    onDisposed.Invoke();
+            }
+
+            isInitWaiting = true;
+
+            while (isChangeVideoModeWaiting)
+            {
+                yield return null;
+            }
+
+            isChangeVideoModeWaiting = true;
+            if (videoCapture != null)
+            {
+                videoCapture.StopVideoModeAsync(result1 =>
+                {
+                    cameraParams = CreateCameraParams(videoCapture);
+                    videoCapture.StartVideoModeAsync(cameraParams, result2 =>
+                    {
+                        if (!result2.success)
+                        {
+                            isChangeVideoModeWaiting = false;
+                            isInitWaiting = false;
+                            CancelInitCoroutine();
+
+                            if (onErrorOccurred != null)
+                                onErrorOccurred.Invoke(ErrorCode.UNKNOWN);
+                        }
+                        else
+                        {
+                            isChangeVideoModeWaiting = false;
+                        }
+                    });
+                });
+            }
+            else
+            {
+
+                //Fetch a pointer to Unity's spatial coordinate system if you need pixel mapping
+#if XR_PLUGIN_WINDOWSMR
+
+                spatialCoordinateSystemPtr = UnityEngine.XR.WindowsMR.WindowsMREnvironment.OriginSpatialCoordinateSystem;
+
+#elif XR_PLUGIN_OPENXR
+
+                spatialCoordinateSystem = Microsoft.MixedReality.OpenXR.PerceptionInterop.GetSceneCoordinateSystem(UnityEngine.Pose.identity) as SpatialCoordinateSystem;
+
+#elif BUILTIN_XR
+
+#if UNITY_2017_2_OR_NEWER
+                spatialCoordinateSystemPtr = UnityEngine.XR.WSA.WorldManager.GetNativeISpatialCoordinateSystemPtr();
+#else
+                spatialCoordinateSystemPtr = UnityEngine.VR.WSA.WorldManager.GetNativeISpatialCoordinateSystemPtr();
+#endif
+
+#endif
+
+                HoloLensCameraStream.VideoCapture.CreateAync(videoCapture =>
+                {
+
+                    if (initCoroutine == null) return;
+
+                    if (videoCapture == null)
+                    {
+                        Debug.LogError("Did not find a video capture object. You may not be using the HoloLens.");
+
+                        isChangeVideoModeWaiting = false;
+                        isInitWaiting = false;
+                        CancelInitCoroutine();
+
+                        if (onErrorOccurred != null)
+                            onErrorOccurred.Invoke(ErrorCode.CAMERA_DEVICE_NOT_EXIST);
+
+                        return;
+                    }
+
+                    this.videoCapture = videoCapture;
+
+                    //Request the spatial coordinate ptr if you want fetch the camera and set it if you need to 
+#if XR_PLUGIN_OPENXR
+                    videoCapture.WorldOrigin = spatialCoordinateSystem;
+#elif XR_PLUGIN_WINDOWSMR || BUILTIN_XR
+                    videoCapture.WorldOriginPtr = spatialCoordinateSystemPtr;
+#endif
+
+                    cameraParams = CreateCameraParams(videoCapture);
+
+                    videoCapture.FrameSampleAcquired -= OnFrameSampleAcquired;
+                    videoCapture.FrameSampleAcquired += OnFrameSampleAcquired;
+                    videoCapture.StartVideoModeAsync(cameraParams, result =>
+                    {
+                        if (!result.success)
+                        {
+                            isChangeVideoModeWaiting = false;
+                            isInitWaiting = false;
+                            CancelInitCoroutine();
+
+                            if (onErrorOccurred != null)
+                                onErrorOccurred.Invoke(ErrorCode.UNKNOWN);
+                        }
+                        else
+                        {
+                            isChangeVideoModeWaiting = false;
+                        }
+                    });
+                });
+            }
+
+            int initFrameCount = 0;
+            bool isTimeout = false;
+
+            while (true)
+            {
+                if (initFrameCount > _timeoutFrameCount)
+                {
+                    isTimeout = true;
+                    break;
+                }
+                else if (didUpdateThisFrame)
+                {
+                    Debug.Log("HololensCameraStreamToMatHelper:: " + "name:" + "" + " width:" + frameSampleWidth + " height:" + frameSampleHeight + " fps:" + cameraParams.frameRate);
+
+                    baseColorFormat = (outputColorFormat == ColorFormat.GRAY) ? ColorFormat.GRAY : ColorFormat.BGRA;
+
+                    baseMat = new Mat(frameSampleHeight, frameSampleWidth, CvType.CV_8UC(Channels(baseColorFormat)));
+
+                    if (baseColorFormat == outputColorFormat)
+                    {
+                        frameMat = baseMat;
+                    }
+                    else
+                    {
+                        frameMat = new Mat(baseMat.rows(), baseMat.cols(), CvType.CV_8UC(Channels(outputColorFormat)));
+                    }
+
+                    if (_rotate90Degree)
+                        rotatedFrameMat = new Mat(frameMat.cols(), frameMat.rows(), CvType.CV_8UC(Channels(outputColorFormat)));
+
+                    isInitWaiting = false;
+                    hasInitDone = true;
+                    initCoroutine = null;
+
+                    if (onInitialized != null)
+                        onInitialized.Invoke();
+
+                    hasInitEventCompleted = true;
+
+                    break;
+                }
+                else
+                {
+                    initFrameCount++;
+                    yield return null;
+                }
+            }
+
+            if (isTimeout)
+            {
+                if (videoCapture != null)
+                {
+                    videoCapture.FrameSampleAcquired -= OnFrameSampleAcquired;
+
+                    isChangeVideoModeWaiting = true;
+                    videoCapture.StopVideoModeAsync(result =>
+                    {
+                        videoCapture.Dispose();
+                        videoCapture = null;
+                        isChangeVideoModeWaiting = false;
+                    });
+
+                    isInitWaiting = false;
+                    initCoroutine = null;
+
+                    if (onErrorOccurred != null)
+                        onErrorOccurred.Invoke(ErrorCode.TIMEOUT);
+                }
+                else
+                {
+                    isInitWaiting = false;
+                    initCoroutine = null;
+
+                    if (onErrorOccurred != null)
+                        onErrorOccurred.Invoke(ErrorCode.TIMEOUT);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Indicates whether this instance has been initialized.
+        /// </summary>
+        /// <returns><c>true</c>, if this instance has been initialized, <c>false</c> otherwise.</returns>
+        public override bool IsInitialized()
+        {
+            return hasInitDone;
+        }
+
+        /// <summary>
+        /// Starts the camera.
+        /// </summary>
+        public override void Play()
+        {
+            if (hasInitDone)
+                StartCoroutine(_Play());
+        }
+
+        protected virtual IEnumerator _Play()
+        {
+            while (isChangeVideoModeWaiting)
+            {
+                yield return null;
+            }
+
+            if (!hasInitDone || videoCapture.IsStreaming) yield break;
+
+            isChangeVideoModeWaiting = true;
+            videoCapture.StartVideoModeAsync(cameraParams, result =>
+            {
+                isChangeVideoModeWaiting = false;
+            });
+        }
+
+        /// <summary>
+        /// Pauses the active camera.
+        /// </summary>
+        public override void Pause()
+        {
+            if (hasInitDone)
+                StartCoroutine(_Stop());
+        }
+
+        /// <summary>
+        /// Stops the active camera.
+        /// </summary>
+        public override void Stop()
+        {
+            if (hasInitDone)
+                StartCoroutine(_Stop());
+        }
+
+        protected virtual IEnumerator _Stop()
+        {
+            while (isChangeVideoModeWaiting)
+            {
+                yield return null;
+            }
+
+            if (!hasInitDone || !videoCapture.IsStreaming) yield break;
+
+            isChangeVideoModeWaiting = true;
+            videoCapture.StopVideoModeAsync(result =>
+            {
+                isChangeVideoModeWaiting = false;
+            });
+        }
+
+        /// <summary>
+        /// Indicates whether the active camera is currently playing.
+        /// </summary>
+        /// <returns><c>true</c>, if the active camera is playing, <c>false</c> otherwise.</returns>
+        public override bool IsPlaying()
+        {
+            if (!hasInitDone)
+                return false;
+
+            return videoCapture.IsStreaming;
+        }
+
+        /// <summary>
+        /// Indicates whether the active camera device is currently front facng.
+        /// </summary>
+        /// <returns><c>true</c>, if the active camera device is front facng, <c>false</c> otherwise.</returns>
+        public override bool IsFrontFacing()
+        {
+            return false;
+        }
+
+        /// <summary>
+        /// Returns the active camera device name.
+        /// </summary>
+        /// <returns>The active camera device name.</returns>
+        public override string GetDeviceName()
+        {
+            return "";
+        }
+
+        /// <summary>
+        /// Returns the active camera width.
+        /// </summary>
+        /// <returns>The active camera width.</returns>
+        public override int GetWidth()
+        {
+            if (!hasInitDone)
+                return -1;
+            return (rotatedFrameMat != null) ? frameMat.height() : frameMat.width();
+        }
+
+        /// <summary>
+        /// Returns the active camera height.
+        /// </summary>
+        /// <returns>The active camera height.</returns>
+        public override int GetHeight()
+        {
+            if (!hasInitDone)
+                return -1;
+            return (rotatedFrameMat != null) ? frameMat.width() : frameMat.height();
+        }
+
+        /// <summary>
+        /// Returns the active camera framerate.
+        /// </summary>
+        /// <returns>The active camera framerate.</returns>
+        public override float GetFPS()
+        {
+            return hasInitDone ? cameraParams.frameRate : -1f;
+        }
+
+        /// <summary>
+        /// Returns the webcam texture.
+        /// </summary>
+        /// <returns>The webcam texture.</returns>
+        public override WebCamTexture GetWebCamTexture()
+        {
+            return null;
+        }
+
+        /// <summary>
+        /// Returns the camera to world matrix.
+        /// </summary>
+        /// <returns>The camera to world matrix.</returns>
+        public override Matrix4x4 GetCameraToWorldMatrix()
+        {
+            return cameraToWorldMatrix;
+        }
+
+        /// <summary>
+        /// Returns the projection matrix matrix.
+        /// </summary>
+        /// <returns>The projection matrix.</returns>
+        public override Matrix4x4 GetProjectionMatrix()
+        {
+            return projectionMatrix;
+        }
+
+        /// <summary>
+        /// Indicates whether the video buffer of the frame has been updated.
+        /// </summary>
+        /// <returns><c>true</c>, if the video buffer has been updated <c>false</c> otherwise.</returns>
+        public override bool DidUpdateThisFrame()
+        {
+            if (!hasInitDone)
+                return false;
+
+            return didUpdateThisFrame;
+        }
+
+        /// <summary>
+        /// Gets the mat of the current frame.
+        /// The Mat object's type is 'CV_8UC4' or 'CV_8UC3' or 'CV_8UC1' (ColorFormat is determined by the outputColorFormat setting).
+        /// Please do not dispose of the returned mat as it will be reused.
+        /// </summary>
+        /// <returns>The mat of the current frame.</returns>
+        public override Mat GetMat()
+        {
+            if (!hasInitDone || !videoCapture.IsStreaming || latestImageBytes == null)
+            {
+                return (rotatedFrameMat != null) ? rotatedFrameMat : frameMat;
+            }
+
+            if (baseColorFormat == outputColorFormat)
+            {
+                MatUtils.copyToMat<byte>(latestImageBytes, frameMat);
+            }
+            else
+            {
+                MatUtils.copyToMat<byte>(latestImageBytes, baseMat);
+                Imgproc.cvtColor(baseMat, frameMat, ColorConversionCodes(baseColorFormat, outputColorFormat));
+            }
+
+            if (rotatedFrameMat != null)
+            {
+                Core.rotate(frameMat, rotatedFrameMat, Core.ROTATE_90_CLOCKWISE);
+                FlipMat(rotatedFrameMat, _flipVertical, _flipHorizontal);
+
+                return rotatedFrameMat;
+            }
+            else
+            {
+                FlipMat(frameMat, _flipVertical, _flipHorizontal);
+
+                return frameMat;
+            }
+        }
+
+        /// <summary>
+        /// Flips the mat.
+        /// </summary>
+        /// <param name="mat">Mat.</param>
+        protected override void FlipMat(Mat mat, bool flipVertical, bool flipHorizontal)
+        {
+            int flipCode = int.MinValue;
+
+            if (_flipVertical)
+            {
+                if (flipCode == int.MinValue)
+                {
+                    flipCode = 0;
+                }
+                else if (flipCode == 0)
+                {
+                    flipCode = int.MinValue;
+                }
+                else if (flipCode == 1)
+                {
+                    flipCode = -1;
+                }
+                else if (flipCode == -1)
+                {
+                    flipCode = 1;
+                }
+            }
+
+            if (_flipHorizontal)
+            {
+                if (flipCode == int.MinValue)
+                {
+                    flipCode = 1;
+                }
+                else if (flipCode == 0)
+                {
+                    flipCode = -1;
+                }
+                else if (flipCode == 1)
+                {
+                    flipCode = int.MinValue;
+                }
+                else if (flipCode == -1)
+                {
+                    flipCode = 0;
+                }
+            }
+
+            if (flipCode > int.MinValue)
+            {
+                Core.flip(mat, mat, flipCode);
+            }
+        }
+
+        /// <summary>
+        /// To release the resources.
+        /// </summary>
+        protected override void ReleaseResources()
+        {
+            isInitWaiting = false;
+            hasInitDone = false;
+            hasInitEventCompleted = false;
+
+            latestImageBytes = null;
+            didUpdateThisFrame = false;
+            didUpdateImageBufferInCurrentFrame = false;
+
+            if (frameMat != null)
+            {
+                frameMat.Dispose();
+                frameMat = null;
+            }
+            if (baseMat != null)
+            {
+                baseMat.Dispose();
+                baseMat = null;
+            }
+            if (rotatedFrameMat != null)
+            {
+                rotatedFrameMat.Dispose();
+                rotatedFrameMat = null;
+            }
+        }
+
+        /// <summary>
+        /// Releases all resource used by the <see cref="WebCamTextureToMatHelper"/> object.
+        /// </summary>
+        /// <remarks>Call <see cref="Dispose"/> when you are finished using the <see cref="WebCamTextureToMatHelper"/>. The
+        /// <see cref="Dispose"/> method leaves the <see cref="WebCamTextureToMatHelper"/> in an unusable state. After
+        /// calling <see cref="Dispose"/>, you must release all references to the <see cref="WebCamTextureToMatHelper"/> so
+        /// the garbage collector can reclaim the memory that the <see cref="WebCamTextureToMatHelper"/> was occupying.</remarks>
+        public override void Dispose()
+        {
+            if (colors != null)
+                colors = null;
+
+            if (isInitWaiting)
+            {
+                CancelInitCoroutine();
+
+                frameMatAcquired = null;
+
+                if (videoCapture != null)
+                {
+                    videoCapture.FrameSampleAcquired -= OnFrameSampleAcquired;
+
+                    StartCoroutine(_Dispose());
+                }
+
+                ReleaseResources();
+            }
+            else if (hasInitDone)
+            {
+                frameMatAcquired = null;
+
+                videoCapture.FrameSampleAcquired -= OnFrameSampleAcquired;
+
+                StartCoroutine(_Dispose());
+
+                ReleaseResources();
+
+                if (onDisposed != null)
+                    onDisposed.Invoke();
+            }
+        }
+
+        protected virtual IEnumerator _Dispose()
+        {
+            while (isChangeVideoModeWaiting)
+            {
+                yield return null;
+            }
+
+            isChangeVideoModeWaiting = true;
+            videoCapture.StopVideoModeAsync(result =>
+            {
+                videoCapture.Dispose();
+                videoCapture = null;
+                isChangeVideoModeWaiting = false;
+            });
+        }
+#endif
+    }
+}
+
+#endif
+#endif
\ No newline at end of file
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/HololensCameraStreamToMatHelper.cs.meta b/Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/HLCameraStreamToMatHelper.cs.meta
similarity index 100%
rename from Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/HololensCameraStreamToMatHelper.cs.meta
rename to Assets/HoloLensWithOpenCVForUnityExample/Scripts/Utils/HLCameraStreamToMatHelper.cs.meta
diff --git a/Assets/HoloLensWithOpenCVForUnityExample/ShowLicense.cs b/Assets/HoloLensWithOpenCVForUnityExample/ShowLicense.cs
index 73f38bc..07d51c8 100644
--- a/Assets/HoloLensWithOpenCVForUnityExample/ShowLicense.cs
+++ b/Assets/HoloLensWithOpenCVForUnityExample/ShowLicense.cs
@@ -1,29 +1,29 @@
-using UnityEngine;
-using UnityEngine.SceneManagement;
-using System.Collections;
-
-namespace HoloLensWithOpenCVForUnityExample
-{
-    public class ShowLicense : MonoBehaviour
-    {
-        // Use this for initialization
-        protected void Start()
-        {
-
-        }
-
-        // Update is called once per frame
-        void Update()
-        {
-
-        }
-
-        /// <summary>
-        /// Raises the back button click event.
-        /// </summary>
-        public void OnBackButtonClick()
-        {
-            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
-        }
-    }
-}
+using UnityEngine;
+using UnityEngine.SceneManagement;
+using System.Collections;
+
+namespace HoloLensWithOpenCVForUnityExample
+{
+    public class ShowLicense : MonoBehaviour
+    {
+        // Use this for initialization
+        protected void Start()
+        {
+
+        }
+
+        // Update is called once per frame
+        void Update()
+        {
+
+        }
+
+        /// <summary>
+        /// Raises the back button click event.
+        /// </summary>
+        public void OnBackButtonClick()
+        {
+            SceneManager.LoadScene("HoloLensWithOpenCVForUnityExample");
+        }
+    }
+}
diff --git a/BuildSettings.jpg b/BuildSettings.jpg
index 0294ea9..3906d09 100644
Binary files a/BuildSettings.jpg and b/BuildSettings.jpg differ
diff --git a/MRTKProjectConfigurator.jpg b/MRTKProjectConfigurator.jpg
deleted file mode 100644
index c403d84..0000000
Binary files a/MRTKProjectConfigurator.jpg and /dev/null differ
diff --git a/PlayerSettings.jpg b/PlayerSettings.jpg
index 4ce20b9..8d7918a 100644
Binary files a/PlayerSettings.jpg and b/PlayerSettings.jpg differ
diff --git a/ProjectAssets.jpg b/ProjectAssets.jpg
index 7b6b90d..d174e12 100644
Binary files a/ProjectAssets.jpg and b/ProjectAssets.jpg differ
diff --git a/README.md b/README.md
index 9a4ea96..43100d2 100644
--- a/README.md
+++ b/README.md
@@ -2,55 +2,53 @@
 
 
 ## What's new
-* Changed the HoloLensCameraStream plugin to the camnewnham's repository. (Improve camera update FPS, hide recording icon, extract camera intrinsic)
+* Support for Hololens1 and Hololens2. (XR System: Legacy Built-in XR / XR Plugin Management WindowsMR / XR Plugin Management OpenXR)
 
 
 ## Demo Video (old version)
 [![](http://img.youtube.com/vi/SdzsedkTpCI/0.jpg)](https://youtu.be/SdzsedkTpCI)
 
 
-## Demo Hololens App
-* [HoloLensWithOpenCVForUnityExample.zip](https://github.com/EnoxSoftware/HoloLensWithOpenCVForUnityExample/releases)
-* Use the Windows Device Portal to install apps on HoloLens. [https://docs.microsoft.com/en-us/hololens/hololens-install-apps](https://docs.microsoft.com/en-us/hololens/hololens-install-apps)
-
-
 ## Environment
-* Hololens 10.0.17763.914 (RS5)
-* Windows 10 SDK 10.0.18362.0
-* Visual Studio 2017 or 2019
-* Unity 2018.4.28f1+  
-* [Microsoft Mixed Reality Toolkit](https://github.com/Microsoft/MixedRealityToolkit-Unity/releases) v2.2.0 
-* [OpenCV for Unity](https://assetstore.unity.com/packages/tools/integration/opencv-for-unity-21088?aid=1011l4ehR) 2.4.1+ 
-* [camnewnham/HoloLensCameraStream](https://github.com/camnewnham/HoloLensCameraStream) 
+* Hololens1 10.0.17763.3532 / Hololens2 20348.1522
+* Windows 10 SDK 10.0.19041.0
+* Visual Studio 2019
+* Unity 2019.4.31f1 / 2020.3.38f1
+* [Microsoft Mixed Reality Toolkit](https://github.com/Microsoft/MixedRealityToolkit-Unity/releases) v2.8.2 
+* [OpenCV for Unity](https://assetstore.unity.com/packages/tools/integration/opencv-for-unity-21088?aid=1011l4ehR) 2.4.9+ 
+* [EnoxSoftware/HoloLensCameraStream](https://github.com/EnoxSoftware/HoloLensCameraStream)
 
 
 ## Setup
 1. Download the latest release unitypackage. [HoloLensWithOpenCVForUnityExample.unitypackage](https://github.com/EnoxSoftware/HoloLensWithOpenCVForUnityExample/releases)
-1. Create a new project. (HoloLensWithOpenCVForUnityExample)
-    * Change the platform to UWP in the "Build Settings" window.
+1. Create a new project. (`HoloLensWithOpenCVForUnityExample`)
+    * Change the platform to `UWP` in the "Build Settings" window.
 1. Import the OpenCVForUnity.
     * Setup the OpenCVForUnity. (Tools > OpenCV for Unity > Set Plugin Import Settings)
-    * Move the "OpenCVForUnity/StreamingAssets/haarcascade_frontalface_alt.xml" and "OpenCVForUnity/StreamingAssets/lbpcascade_frontalface.xml" to the "Assets/StreamingAssets/" folder.
+    * Move the "OpenCVForUnity/StreamingAssets/objdetect/haarcascade_frontalface_alt.xml" and "OpenCVForUnity/StreamingAssets/objdetect/lbpcascade_frontalface.xml" to the "Assets/StreamingAssets/objdetect/" folder.
 1. Clone HoloLensCameraStream repository.
     * Copy the "HoloLensCameraStream/HoloLensVideoCaptureExample/Assets/CamStream/" folder to the "Assets/" folder.
-    * Set the scripting backend of the plugin inspector to "Any Script Backend". (IL2CPP support)
-1. Import the Microsoft.MixedReality.Toolkit.Unity.Foundation.2.2.0.unitypackage.
-    * Setup the MRTKv2. (Mixed Reality ToolKit > Utilities > Configure Unity Project)
-    * Do not enable the "Enable MSBuild for Unity" option in the "MRTK Project Configurator > Modify Configurations" tab.
+1. Import the Microsoft Mixed Reality Toolkit. (Recommend using [MixedRealityFeatureTool](https://www.microsoft.com/en-us/download/details.aspx?id=102778))
+    * Follow the MRTK2 configuration dialog to set up the project.
 1. Import the HoloLensWithOpenCVForUnityExample.unitypackage.
 1. Add the "Assets/HoloLensWithOpenCVForUnityExample/*.unity" files to the "Scenes In Build" list in the "Build Settings" window.
-1. Setup a performance environment suitable for Holorens. (See [https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/recommended-settings-for-unity](https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/recommended-settings-for-unity))
-    * Enable "WebCam" Capabilties in Publishing settings tab.
-1. Build and Deploy to HoloLens. (See [https://developer.microsoft.com/en-us/windows/holographic/holograms_100](https://developer.microsoft.com/en-us/windows/holographic/holograms_100))
+1. Configure settings in the "Project Settings" window.
+    * Add Define Symbols: the following to `Scripting Define Symbols` depending on the XR system used in your project; Legacy built-in XR: `BUILTIN_XR`; XR Plugin Management (Windows Mixed Reality): `XR_PLUGIN_WINDOWSMR`; XR Plugin Management (OpenXR):`XR_PLUGIN_OPENXR`.
+    * Enable `WebCam` Capabilties in Publishing settings tab.
+1. (Optional) Setup a performance environment suitable for Holorens. (See [https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/recommended-settings-for-unity](https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/recommended-settings-for-unity))
+1. **Build the project:** You can now build the Unity project, which generates a Visual Studio Solution (which you will then have to also build). With the Build Settings window still open, click **Build**. In the explorer window that appears, make a new folder called `App`, which should live as a sibling next to the 'Assets` folder. Then click Select Folder to generate the VS solution in that folder. Then wait for Unity to build the solution.
+1. **Open the VS Solution:** When the solution is built, a Windows explorer folder will open. Open the newly-built VS solution, which lives in `App/HoloLensWithOpenCVForUnityExample.sln`. This is the solution that ultimately gets deployed to your HoloLens.
+1. **Configure the deploy settings:** In the Visual Studio toolbar, change the solution platform from `ARM` to `x86` if you are building for Hololens1 or to `ARM64` if you are building for Hololens2; Change the deploy target (the green play button) to `Device` (if your HoloLens is plugged into your computer), or `Remote Machine` (if your HoloLens is connected via WiFi).
+1. **Run the app:** Go to **Debug > Start Debugging**. Once the app is deployed to the HoloLens, you should see some confirmation output in the Output window.
     *  (Print the AR marker "CanonicalMarker-d10-i1-sp500-bb1.pdf" and "ChArUcoBoard-mx5-my7-d10-os1000-bb1.pdf" on an A4 size paper)  
 
-|Project Assets|MRTK Project Configurator|
+|Project Assets|Build Settings|
 |---|---|
-|![ProjectAssets.jpg](ProjectAssets.jpg)|![MRTKProjectConfigurator.jpg](MRTKProjectConfigurator.jpg)|
+|![ProjectAssets.jpg](ProjectAssets.jpg)|![BuildSettings.jpg](BuildSettings.jpg)|
 
-|Build Settings|Player Settings|
-|---|---|
-|![BuildSettings.jpg](BuildSettings.jpg)|![PlayerSettings.jpg](PlayerSettings.jpg)|
+|Player Settings|
+|---|
+|![PlayerSettings.jpg](PlayerSettings.jpg)|
 
 
 ## ScreenShot (old version)