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Lucas & Kanade Pyramidal Refined Optical Flow implementation

11 Feb 2009 (Updated 11 Feb 2009)

This file implements the well-known LK algorithm, with regularization and subpixelic computation.

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Description	This algorithm has also been implemented in CUDA language for parallel execution, which allows to perform real-time optical flow. See CUDA Zone for more details.
Required Products	Image Processing Toolbox
MATLAB release	MATLAB 7 (R14)

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Everyone's Tags	image processing(3), lucas kanade, optical flow(3)
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Comments and Ratings (8)
11 Feb 2009	us	LKPR-marzat is NOT a valid file name... us
17 Nov 2009	Said Pertuz	Sorry, the function 'impyramid' is not provided and thus, I could not test the code. Said
15 Nov 2010	pupu QQ	no problem with matlab 2009
15 Nov 2010	pupu QQ
15 Nov 2010	pupu QQ	files are not complete,what is the meaning of the result pic?
24 Jan 2011	Leo Ono
17 Jul 2011	Vasiliki	The code worked but I have some questions. Why are the velocity arrays not of equal sizes as the image? I used the images you included 252x316 and u and v where of 236x300. While reconstuncting the image I(i,j) = Iold(i+u,j+v) the result wasn't very good. Have you tried reconstructing the image using only the first one and the velocity vectors? If so, can you provide the source ( just to check if my reconstructing code is bad written)?
07 Oct 2011	F Oneair	Hi, whitch terms should I delete if I want compute the optical flow only in the horizontal direction (I work with rectified images) ? thx

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Updates
11 Feb 2009	filename fixed