OpenCV 3 Computer Vision with Python Cookbook

How to do it...

For this recipe, the steps are as follows:

1. Create a VideoCapture object:

import cv2capture = cv2.VideoCapture(0)

2. Read the frames from the camera using the capture.read method, which returns a pair: a read success flag and the frame itself:

while True:    has_frame, frame = capture.read()    if not has_frame:        print('Can\'t get frame')        break     cv2.imshow('frame', frame)    key = cv2.waitKey(3)    if key == 27:        print('Pressed Esc')        break

3. It's generally recommended that you release the video device (a camera, in our case) and destroy all the windows created:

capture.release()cv2.destroyAllWindows()