Using pyramid decomposition and iterative refinement, OF is calculated. Includes a demo and a paper that thoroughly explains the methodology.
Berkin Bilgic (2021). Iterative Pyramidal LK Optical Flow (https://www.mathworks.com/matlabcentral/fileexchange/23142-iterative-pyramidal-lk-optical-flow), MATLAB Central File Exchange. Retrieved .
Please don't use this code. It is a wrong implementation. The convergence depends on the number of scales, which it shouldn't.
Thanks.Recently,I'm researching this.
Nicely written code. Thanks
the SAD before / SAD after is always at 1.6 ~ 1.9 for my pictures
Has anyone got beeter SAD ratio?
The terms Ix^2 and Iy^2 denote the second derivatives wrt to x and y. However, that matrix is sometimes ill conditioned, so you may want to google 'good features to track' by Shi&Tomosi which discusses that problem.
I am a french student and I tried make your algorythm work with python but I have a problem (I don't know if it is me or the pdf). when I compute the G matrix , this one is always uninvertible (I dont see how it would be possible to invert a Matrix [[Ix²,Ix*Iy],[IX*Iy,Iy²]] because the determinant is always 0) could you help me please?
I added two example images and some more comments, I hope they'll be online soon.
Thanks for sharing this. Could you please also upload the images yos9.tif and yos10.tif referenced in the demo.m file?
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