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Stereo Matching

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Stereo Matching

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20 Aug 2010 (Updated )

A GUI demonstrates an efficient stereo matching algorithm.

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Description

 FAST MATLAB STEREO MATCHING ALGORITHM (SAD)

This function performs the computationally expensive step of matching two rectified and undistorted stereo images. The output is a dense disparity map. If camera parameters are known, this allows for three dimensional reconstruction.

Two graphical user interfaces demonstrate the algorithm.

Please note this function requires the Image Processing Toolbox!

[spdmap, dcost, pcost, wcost] = stereomatch(imgleft, imgright, windowsize, disparity, spacc)

The standard images included are from
[1] D. Scharstein and R. Szeliski. A taxonomy and evaluation of dense two-frame stereo correspondence algorithms. International Journal of Computer Vision, 47(1/2/3):7-42, April-June 2002.
[2] D. Scharstein and R. Szeliski. High-accuracy stereo depth maps using structured light. In IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR 2003), volume 1, pages 195-202, Madison, WI, June 2003.

Please do provide feedback.

Required Products Image Processing Toolbox
MATLAB release MATLAB 8.0 (R2012b)
Other requirements Image Processing Toolbox
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Comments and Ratings (15)
11 Apr 2014 BERNARD

Thanks

15 Dec 2013 Fitroh Amaluddin

thankss. helpfull,,

15 Nov 2013 David

What is the purpose of the multiplicator option

25 Sep 2013 Qingbi  
11 Apr 2013 nt

good

27 Feb 2013 Michael

The "reconstruction" image is "upside down" compared to the reference and target.

06 Oct 2012 Bashar Alsadik

nice GUI and coding... what if I want to test my own images?

28 Jun 2012 SHAFIQUL

Very Nice !!

22 Mar 2012 Yiting  
19 Aug 2011 David Provencher

There seems to be an error in the integral image technique. The filtering window should be

h = zeros(WS+2,WS+2,'double');
h(1,1) = 1; h(1,WS-1) = -1;
h(WS-1,1) = -1; h(WS-1,WS-1) = 1;

that is, for a 3x3 summing window, the filtering window must be 5x5 to implement the algorithm correclty (see http://en.wikipedia.org/wiki/Summed_area_table#The_algorithm and note that points A, B and C are outside the summing window)

I tested this with a simple matrix for validation. Otherwise, thanks for the useful code.

05 Jul 2011 Hossein Babaee  
13 May 2011 Vishnu

This program shows a disparity map but if i want to save the disparity map to a file how can I do that ?

06 May 2011 sas

good

19 Apr 2011 Yang Li

The file works very well. Just run stereovision.m it will come up with a GUI.

09 Mar 2011 Aaron Wetzler

Please give instructions on how to run. Code doesnt run nor do fig files.

Updates
27 Sep 2010

Adjusted description

12 Sep 2012

Updated to include an App file for R2012b

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