OpenCV+python实现摄像头的调用

#摄像头并显示轮廓

import cv2

cap = cv2.VideoCapture(0)

i=0

while(1):

    ret, frame = cap.read()

    img_gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    img_gb = cv2.GaussianBlur(img_gray, (5, 5), 0)

    edges = cv2.Canny(img_gb, 100 , 200)

    cv2.imshow("capture", edges)

    if cv2.waitKey(1) & 0xFF == ord('q'):      

        break

cap.release()

cv2.destroyAllWindows()