Q:

Object Tracking OpenCV GPU / CUDA

I'm trying to track objects very fast using my gpu. 
I've already done this one the CPU by

background Subtraction
contour Finding
Meanshift

But I cannot find anything in the OpenCV CUDA-Modul equal to the contour Finding algorithm. Background Subtraction works already very fast. Is there another way for object tracking using the GPU in OpenCV, CUDA Module?

A:

You are right, there is no contour-finding algorithm in the CUDA module of OpenCV -because this algorithm is hard to optimize for the GPU.
But you could use optical flow. 
For doing this, you would have to find some features in the background-subtracted image; for example edges/corners or you could use GoodFeaturesToTrack, too.

