Lucas-Kanade cvoptflowlk.cpp: what data mean?

Hi all,

Someone knows the meaning of the data got from:

(float)(velx->imageData[index])

It seems the optical flow is represented with gray intensity.

How can I get the true optical flow?

Also, I put in icvCalcOpticalFlowLK_8u32fR a:
std::cout << "Allo le monde!\n";

It's never displayed!

In the function:

cvCalcOpticalFlowLK

I put all the code in comments ... and it's still working!

I have the feeling the source code is not very usefull since it 
works without it!


Someone has an idea what I missed?

Thanks a lot.

Dominique





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