00-01-代码分析-python opencv 调用摄像头之if cv2.waitKey(1) & 0xFF == ord(‘q‘)_孔言66的博客

while(1)循环内不断采集图像帧并显示，并进行按键 ‘q’ 的检测，语句段如下： 

while(True):
    ret,frame = cap.read()
    gray = cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)
    cv2.imshow('frame',gray)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break
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