diff --git a/src/main.py b/src/main.py
index 1bc7de0..6282e08 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,9 +1,10 @@
-import sys
 from PySide6.QtWidgets import QApplication, QCheckBox, QMainWindow, QRadioButton, QVBoxLayout, QHBoxLayout, QLabel, QFrame, QPushButton, QFileDialog, QWidget, QScrollArea
 from PySide6.QtGui import Qt
 from PySide6.QtCore import Qt, QSize, QTimer
-import cv2 as cv
-import numpy as np
+
+from cv2 import cvtColor, imdecode, imencode, COLOR_BGR2RGB, IMREAD_UNCHANGED
+from numpy import fromfile, uint8
+from sys import argv, exit
 
 from transformermanager import TransformerManager
 from transformer import Transformer
@@ -195,8 +196,8 @@ def open_image(self):
 
         if str_path:
             self.img_path = str_path
-            img_array = cv.imdecode(np.fromfile(str_path, dtype=np.uint8), cv.IMREAD_UNCHANGED)
-            img_array = cv.cvtColor(img_array, cv.COLOR_BGR2RGB)
+            img_array = imdecode(fromfile(str_path, dtype=uint8), IMREAD_UNCHANGED)
+            img_array = cvtColor(img_array, COLOR_BGR2RGB)
         return img_array
 
     def open_first_image(self):
@@ -321,8 +322,8 @@ def action_download_current_image(self):
         if file_dialog.exec():
             file_path = file_dialog.selectedFiles()[0]
             try:
-                array_to_save = cv.cvtColor(self.pipeline[self.index_current_img].img_array, cv.COLOR_BGR2RGB)
-                _, im_buf_arr = cv.imencode(".png", array_to_save)
+                array_to_save = cvtColor(self.pipeline[self.index_current_img].img_array, COLOR_BGR2RGB)
+                _, im_buf_arr = imencode(".png", array_to_save)
                 im_buf_arr.tofile(file_path)
                 print("Image saved successfully.")
             except Exception as e:
@@ -463,7 +464,7 @@ def update_transformation_parameters_frame(self):
 
 
 if __name__ == '__main__':
-    app = QApplication(sys.argv)
+    app = QApplication(argv)
     window = MainWindow()
     window.show()
-    sys.exit(app.exec())
+    exit(app.exec())
diff --git a/src/menuwithtext.py b/src/menuwithtext.py
index 8500db2..0f7abe1 100644
--- a/src/menuwithtext.py
+++ b/src/menuwithtext.py
@@ -1,6 +1,4 @@
 from PySide6.QtWidgets import QComboBox, QLabel, QFrame, QVBoxLayout
-from PySide6.QtCore import Qt
-from stepslider import StepSlider
 
 MAXIMUM_HEIGHT = 65
 
diff --git a/src/pipelineitem.py b/src/pipelineitem.py
index 750399b..6c483a0 100644
--- a/src/pipelineitem.py
+++ b/src/pipelineitem.py
@@ -1,5 +1,5 @@
 from PySide6.QtGui import QPixmap, QImage, qRgb
-import numpy as np
+from numpy import uint8, require
 
 class PipelineItem():
     """Object that contains the image in an array and the corresponding transformation item"""
@@ -20,8 +20,8 @@ def to_q_image(self, im, copy=False):
         if im is None:
             return QImage()
 
-        if im.dtype == np.uint8:
-            im = np.require(im, np.uint8, 'C')
+        if im.dtype == uint8:
+            im = require(im, uint8, 'C')
             if len(im.shape) == 2:
                 qim = QImage(im.data, im.shape[1], im.shape[0], im.strides[0], QImage.Format_Indexed8)
                 qim.setColorTable(gray_color_table)
diff --git a/src/sliderwithtext.py b/src/sliderwithtext.py
index 98c818f..edfe35e 100644
--- a/src/sliderwithtext.py
+++ b/src/sliderwithtext.py
@@ -1,5 +1,4 @@
-from PySide6.QtWidgets import QSlider, QLabel, QFrame, QVBoxLayout
-from PySide6.QtCore import Qt
+from PySide6.QtWidgets import QLabel, QFrame, QVBoxLayout
 from stepslider import StepSlider
 
 MAXIMUM_HEIGHT = 65
diff --git a/src/transformermanager.py b/src/transformermanager.py
index 6a0b8ba..a2fa1a0 100644
--- a/src/transformermanager.py
+++ b/src/transformermanager.py
@@ -1,6 +1,5 @@
 from pipelineitem import PipelineItem
 from transformationitem import TransformationItem
-from PySide6.QtWidgets import QApplication, QMessageBox
 
 
 class TransformerManager():