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If you do not add waitkey() function after imshow() function, it will not be displayed

2022-07-26 21:45:00 【Alone, sir】

The official explanation is highgui Not given imshow Draw processing time . Need to be in imshow add to waitKey()waitKey() The unit is ms

Suggestions for saving time waitKey(1);

As shown below 

	imshow("Image", img);
	waitKey(1);

 

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