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OpenCVLink insight?

Recent versions of Mathematica contain OpenCVLink, presumably for support of image processing routines in WL. Its internal nature means that it is, understandably, relatively incomplete and undocumented.

I have some optic flow calculations to do, and, indeed, I see that two CUDA implementations are available,

$OpticalFlowFarneback

and

$OpticalFlowDualTVL1

but their parameters are not as easily decipherable as some of the other implementations ($Dilation for example).

I was wondering if anyone out there had successfully parsed the unparsable or, barring that, someone has a .mc link that uses OpenCV that I can just steal as a template.Maybe even WRI could think of releasing some of these incomplete undocumented links to the GitHub-o-verse where the public could enhance and refine them?

POSTED BY: Flip Phillips
5 Replies
POSTED BY: Shadi Ashnai
POSTED BY: Flip Phillips

Salam Shadi,

I hope everything is going well for you.
I tried to use the OpticalFlow for a small project and did something. I'm not sure whether I went the right way or not. May I get your help.?

All the best,
Mohammad

POSTED BY: M.A. Ghorbani

Sure. Please feel free to comment here or create a new post with your question. Either the community or myself should be able to help.

POSTED BY: Shadi Ashnai

Thank you, Shadi.

I came across this post that shows how optical flow is used in the tracking cell's motion.

As I am a hydrologist, I decided to use the optical flow for measuring river flow velocity. I recorded a short video (10 seconds) from the Sumida River, Japan. I did something and got the initial results. Please have a look at the enclosed notebook and the video. The main aim of this notebook is the extraction of velocity components.

POSTED BY: M.A. Ghorbani
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