Iterative Pyramidal LK Optical Flow
version 1.2.0.0 (373 KB) by
Berkin Bilgic
- 1 file
- 20 downloads
An implementation of Lucas-Kanade optical flow computation.
20 Downloads
Updated 27 Mar 2009
No License
Using pyramid decomposition and iterative refinement, OF is calculated. Includes a demo and a paper that thoroughly explains the methodology.
Comments and Ratings (11)
Updates
| 1.2.0.0 | Borders are handled better, and refinement is updated. |
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| 1.1.0.0 | Example images and a few more comments are added |
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Arnab Dhara (view profile)
Please don't use this code. It is a wrong implementation. The convergence depends on the number of scales, which it shouldn't.
alon begin (view profile)
chenchao (view profile)
r (view profile)
Bob (view profile)
Thanks.Recently,I'm researching this.
Y Simson (view profile)
Nicely written code. Thanks
Assaf laufer (view profile)
Hi all
the SAD before / SAD after is always at 1.6 ~ 1.9 for my pictures
Has anyone got beeter SAD ratio?
Berkin Bilgic (view profile)
Hi,
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.
Gabriel Kasser (view profile)
Hi
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?
Best regards
GK
Berkin Bilgic (view profile)
Hi,
I added two example images and some more comments, I hope they'll be online soon.
Berkin
Am VR (view profile)
Hi Berkin,
Thanks for sharing this. Could you please also upload the images yos9.tif and yos10.tif referenced in the demo.m file?
Thanks!
Best,AV