No BSD License  

Highlights from
Iterative Pyramidal LK Optical Flow

4.5

4.5 | 2 ratings Rate this file 51 Downloads (last 30 days) File Size: 373 KB File ID: #23142
image thumbnail

Iterative Pyramidal LK Optical Flow

by

 

27 Feb 2009 (Updated )

An implementation of Lucas-Kanade optical flow computation.

| Watch this File

File Information
Description

Using pyramid decomposition and iterative refinement, OF is calculated. Includes a demo and a paper that thoroughly explains the methodology.

Required Products Image Processing Toolbox
MATLAB release MATLAB 7.6 (R2008a)
Tags for This File   Please login to tag files.
Please login to add a comment or rating.
Comments and Ratings (6)
17 May 2014 Y Simson

Nicely written code. Thanks

28 Apr 2009 Assaf laufer

Hi all
the SAD before / SAD after is always at 1.6 ~ 1.9 for my pictures
Has anyone got beeter SAD ratio?

14 Apr 2009 Berkin Bilgic

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.

11 Apr 2009 Gabriel Kasser

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

01 Mar 2009 Berkin Bilgic

Hi,

I added two example images and some more comments, I hope they'll be online soon.

Berkin

27 Feb 2009 Am VR

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

Updates
27 Feb 2009

Example images and a few more comments are added

27 Mar 2009

Borders are handled better, and refinement is updated.

Contact us