Detect the number of webcams/cameras on PC with OpenCv

Question

I'm making an application running multiple webcams/cameras. I cannot manage to detect the number of webcams I have with OpenCV to arrage a big display window with multiple sub webcams in it.

Someone can help me this?

I've searched openCV willowgarage but failed

thanks

fireant · Accepted Answer · 2012-05-06 16:36:27Z

9

I don't think OpenCV provides any function to tell how many cameras are detected. An easy and cross-platform way is to call VideoCapture::open() in a loop with say 0 to 10, and in each iteration check if VideoCapture::isOpened() returns true. This way you know the index of the cameras and how many of them you've got.

answered May 6, 2012 at 16:36

fireant

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