Opencv 调整大小取消/停止

Question

Can you cancel/stop a resize function? Say if it is resizing an image for 4 seconds and I would like to cancel it after 2 seconds (timing does not matter) because I do not want to resize this particular image, is there a method of doing so?

cvResize(srcImg, dstImg, CV_INTER_AREA);   //Cancel this function

Answer 1

If you're on a platform that supports POSIX threads, you could start a new thread to perform the cvResize operation, then use pthread_cancel if you need to stop it before it runs to completion. There's nothing built into standard C++ or OpenCV to do what you're asking.

Answer 2

What @Jim says is the way to go. But another approach that might work for you is simply to check the size of the image before executing cvResize() . You probably know which image takes 4 seconds to process, so what you can do is always check the size of the image and if it's too big , you just don't call cvResize() .