import cv2
import numpy as np
def video_demo():
capture = cv2.VideoCapture(0)#0为电脑内置摄像头
while(True):
ret,frame = capture.read()#摄像头读取,ret为是否成功打开摄像头,true,false。 frame为视频的每一帧图像
frame = cv2.flip(frame,1)#摄像头是和人对立的,将图像左右调换回来正常显示。
cv2.imshow("video",frame)
c = cv2.waitKey(50)
if c == 27:
break
video_demo()
cv2.destroyAllWindows(
)
pip install -i https://pypi.douban.com/simple opencv-python
#用豆瓣下载opencv-python即可倒入cv2包
或者如下命令
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple opencv-python
在控制台输入: