python+opencv实现摄像头的调用

apt install python-pip                //安装pip
 
pip --version                         //查看pip的版本信息
 
pip install opencv-python             //安装opencv-python

# -- coding:utf-8 --
 
import cv2
cap = cv2.VideoCapture(0)                                        # 打开摄像头
 
while True:
    ret, frame = cap.read()                                      # 读摄像头
    cv2.imshow("video", frame) 
    if cv2.waitKey(1) & 0xFF == ord('q'):                        # 按q退出
        break
        
cap.release()            
cv2.destroyAllWindows()                                          # 基本操作