1.5 openCV-python 摄像头捕获视频
用摄像头捕获视频
使用摄像头来捕获一段视频，并把它转换成灰度视频显示出来
# -*- coding: utf-8 -*-
import numpy as np
import cv2.cv2 as cv2
# 处理视频文件
cap = cv2.VideoCapture(0)
while(1):
# Capture frame-by-frame
ret, frame = cap.read()
# Our operations on the frame come here
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
# Display the resulting frame
cv2.imshow('frame', gray)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
# When everthing done, release the capture
cap.release()
cv2.destroyAllWindows()
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