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I use OpenCV to process each frame of video input.

If I run program in QtCreator (debug or release mode), then the running time 15->20 ms per 1 frame. If I run my program directly in debug or release directory, then running time = 60->70 ms per 1 frame.

I use Qt library 5.3.1 (QtCreator 32bit), Opencv 2.4.9 (shared library) on KUbuntu 32bit. Video resolution 720 x 576. I use cv::getTickCount() to measure running time .

I have tested my project on another laptop ( KUbuntu 64 bit, QtCreator 64bit).
Running program in qt creator is equal running directly.

Can anybody fix this problem? Do I need to configure something in QtCreator !??
Thanks !
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