擅长:python、mysql、java
<p>对于相机/视频,我可以推荐这个<a href="https://docs.opencv.org/master/dd/d43/tutorial_py_video_display.html" rel="nofollow noreferrer">OpenCV</a></p>
<pre><code>import numpy as np
import cv2 as cv
cap = cv.VideoCapture(0)
if not cap.isOpened():
print("Cannot open camera")
exit()
while True:
# Capture frame-by-frame
ret, frame = cap.read()
# if frame is read correctly ret is True
if not ret:
print("Can't receive frame (stream end?). Exiting ...")
break
# Our operations on the frame come here
gray = cv.cvtColor(frame, cv.COLOR_BGR2GRAY)
# Display the resulting frame
cv.imshow('frame', gray)
if cv.waitKey(1) == ord('q'):
break
# When everything done, release the capture
cap.release()
cv.destroyAllWindows()
</code></pre>
<p><code>cv.VideoCapture(0)</code>捕获视频帧并<code>ret, frame = cap.read()</code>读取每个帧</p>