optical flow algorithm

pruneaue — Wed, 27 Sep 2006 09:41:59 GMT

I'm trying to useipp optical flow algorithm OpticalFlowPyrLK.

The first two parameters are the pyramid structure (IppiPyramid) for the previous and next images.

My question:

Is the algorithm computes the pyramid layers or should I compute them myself before calling OpticalFlowPyrLK function. If the algorithm computes all the layers, How should I initialize the IppiPyramid structure.

I checked at the OpenCV implementation of the samealgorithm and it look like that the algorithm compute all the layers of the pyramid.

Regards

Eric

Your assumption was correct

Intel_C_Intel — Thu, 28 Sep 2006 22:37:59 GMT

Hi!

In IPP all OpticalFlowPyrLK functions use already existed pyramid structure.

So at first you should create (allocate and fill) pyramid structures for both images (previous and next) and then call OpticalFlowPyrLK function.

By the way, first two parameters in OpticalFlowPyrLK functions are pointers to the pyramd structures, not the structures themself.

Regards

Ignat

topic Your assumption was correct in Intel® Integrated Performance Primitives

optical flow algorithm

Your assumption was correct