Hi,
I know to find frame rate from a video, we can use the capture property and ID:CV_CAP_PROP_FPS.
But how to find the frame rate of a live capture? the capture property (CV_CAP_PROP_FPS) doesn't work for live capture.
Thanks.
You can always do something like this:
...
//Open camera and so on...
...
while(1)
{
double t = (double)cv::getTickCount();
//Capture new frame...
...
// Do your stuff...
...
t = ((double)cv::getTickCount() - t) / cv::getTickFrequency();// elapsed time in ms
std::cout << "I am working at " << 1000.0/t << " FPS" << std::endl;
}
Hope this helps
oooops, my bad! In the end t is expressed in milliseconds!! How about: std::cout << "I am working at " << 1000.0/t << " FPS" << std::endl;
Asked: 2012-08-20 12:50:52 -0600
Seen: 6,724 times
Last updated: Aug 22 '12
