OpenCV3 Python 语言实现在运用camera.release()遇到的坑

最新推荐文章于 2025-02-18 22:04:26 发布

qq_20156437

最新推荐文章于 2025-02-18 22:04:26 发布

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在使用OpenCV camera.release()函数中遇到的一个坑，坑了我N久时间。

出现错误代码的源代码：

import cv2
cap = cv2.VideoCapture(0)
while True:
    ret,frame = cap.read()
    cv2.imshow("camera",frame)
    k = cv2.waitKey(1)&0xff
    if k==27:
        break
    cap.release()
    cv2.destroyAllWindows()

在运行这段代码时，会报错：

C:\Users\John\AppData\Local\Programs\Python\Python36-32\python.exe G:/Python_work/test/cameraRlease.py
OpenCV(3.4.1) Error: Assertion failed (size.width>0 && size.height>0) in cv::imshow, file D:\Build\OpenCV\opencv-3.4.1\modules\highgui\src\window.cpp, line 364
Traceback (most recent call last):
File "G:/Python_work/test/cameraRlease.py", line 5, in <module>
cv2.imshow("camera",frame)
cv2.error: OpenCV(3.4.1) D:\Build\OpenCV\opencv-3.4.1\modules\highgui\src\window.cpp:364: error: (-215) size.width>0 && size.height>0 in functi