cv2.error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-r2ue8w6k\opencv\modules\highgui\src\window.cpp:376: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'cv::imshow'

安装好opencv进行测试时，发生以下错误

import cv2img = cv2.imread("E:/pythonProject/mei.jpg")
cv2.imshow("hia", img)
cv2.waitKey(0)
cv2.destroyAllWindows()

运行后，报错，看网上说时路径的问题，修改路径无果

Traceback (most recent call last):
File "E:/pythonProject1/demo.py", line 4, in <module>
cv2.imshow("hia", img)
cv2.error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-r2ue8w6k\opencv\modules\highgui\src\window.cpp:376: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'cv::imshow'
Process finished with exit code 1

仔细检查之后发现时图片格式不正确，图片格式是JPEG格式，将图片后缀改成JPEG格式就好了

cv2.error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-r2ue8w6k\opencv\module相关推荐

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cv2.error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-r2ue8w6k\opencv\module

cv2.error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-r2ue8w6k\opencv\modules\highgui\src\window.cpp:376: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'cv::imshow'

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