OpenCV Starter Pack

Objectives

Provide Example codes and code snippets for OpenCV in Python, C++, Java(WIP)

How to start?

pip install opencv-python

Common starter codes

• Basic functions
  • Open Video
  • Open Webcam
  • Open Image
  • Save webcam frames to video
• Image Transformation
• Image Thresholding

Common real life applications

• Read frame from Threaded Camera Stream
• Calculate FPS
• Viola Jones Face Detection using Haar Cascades
• Open multiple webcams
• Overlay image on Webcam frame
• OpenCV Fullscreen
• OpenCV in Portrait Mode
• Overlay picture on picture
• Correct orientation of a document
  
• View two frames side by side
  
• Auto Image Stitching
  
• Image inpainting

Deployment

• Streamlit example

Common functions

• Edge Detection
• Warping

Finding Real World Coordinates of a ball detected using OpenCV

• Converting 2D coordinates to 3D coordinates using calibration matrix