# This script shows how to open a camera in OpenCV and grab frames and show these. # Kim S. Pedersen, 2022 import cv2 # Import the OpenCV library print("OpenCV version = " + cv2.__version__) # Open a camera device for capturing cam = cv2.VideoCapture(0) if not cam.isOpened(): # Error print("Could not open camera") exit(-1) # Open a window WIN_RF = "Example 1" cv2.namedWindow(WIN_RF) cv2.moveWindow(WIN_RF, 100, 100) while cv2.waitKey(4) == -1: # Wait for a key pressed event retval, frameReference = cam.read() # Read frame if not retval: # Error print(" < < < Game over! > > > ") exit(-1) # Show frames cv2.imshow(WIN_RF, frameReference) # Finished successfully