OpenCV学习笔记2-视频

1.从摄像头读取视频

函数：cv2.VideoCapture()

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#用电脑摄像头捕获一段视频并显示

import numpy as np
import cv2

cv2.namedWindow('frame', cv2.WINDOW_NORMAL)
cap = cv2.VideoCapture(0)
while(True):
    ret, frame = cap.read()                 #捕捉一帧图像
    cv2.imshow('frame',frame)               #显示一帧图像
    if cv2.waitKey(1) & 0xFF == ord('q'):