import cv2
if __name__ == "__main__":
webcam = cv2.VideoCapture(0)
if not webcam.isOpened():
print("can't open the camera!!!")
# cv2.namedWindow("video", 0)
# cv2.resizeWindow("video", 960, 720)
# method 1:
webcam.set(3, 1920) # width=1920
webcam.set(4, 1080) # height=1080
# method 2:
# webcam.set(cv2.CAP_PROP_FRAME_WIDTH, 960)
# webcam.set(cv2.CAP_PROP_FRAME_HEIGHT, 720)
while True:
ret, frame = webcam.read()
print(frame.shape[:2]) # just need the first two values.
cv2.imshow("video", frame)
# Hit 'q' on the keyboard to quit!
if cv2.waitKey(1) & 0xFF == ord('q'):
break
# Release handle to the webcam
webcam.release()
cv2.destroyAllWindows()
以下方法可以用来改变窗口的显示大小,但是不等于摄像头的分辨率。(不相信的伙伴可以自己试试)
cv2.namedWindow("video", 0) # 0 即 cv2.WINDOW_NORMAL,表示可以自己调整窗口大小。注意:此“winname”参数应与后面的inshow()中一致。
cv2.resizeWindow("video", 960, 720) # 修改窗口大小为960X720