(-2:Unspecified error) could not find a writer for the specified extension in function‘cv::imwrite_

当运行imwrite函数时出现下面的错误

error: (-2:Unspecified error) could not find a writer for the specified extension in function 'cv::imwrite_'

出现这个的原因是

cv.imwrite(**'skeleton',**skeleton)

没有后缀,jpg,png等。。。改成下面这样就行了

cv.imwrite('skeleton.jpg',skeleton)

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