0x01 OpenCV安裝 

 通過命令pip install opencv-python 安裝

pip install opencv-python

0x02  示例

import cv2

cap = cv2.VideoCapture(0)        #開啟攝像頭

while(1):
    # get a frame
    ret, frame = cap.read()
    # show a frame
    cv2.imshow("capture", frame)     #生成攝像頭視窗
    
    if cv2.waitKey(1) & 0xFF == ord('q'):   #如果按下q 就截圖儲存並退出
        cv2.imwrite("D:/test.png", frame)   #儲存路徑
        break

cap.release()
cv2.destroyAllWindows()