Other highly recommended Computer Vision software sites
Andrew Zisserman's MATLAB Functions for Multiple View Geometry
Jean-Yves Bouguet's MATLAB Calibration Software
David Gleich's MATLAB Graph Library. This fills a big hole in the MATLAB standard packages.
by Andrea Vedaldi and Brian Fulkerson is a excellent library of vision algorithms. Here you will find SIFT, MSER, k-means and more. All beautifully documented.
Piotr's Image & Video Toolbox for Matlab
maintained by Piotr Dollar and Vincent Rabaud. Well documented functions for filtering, clustering, classifying and more.
Peter Corke's Machine Vision Toolbox
he also has a well regarded Robotics Toolbox.
Libor Masek's Iris Recognition Code
Epipolar Geometry Toolbox
by Gian Luca Mariottini and Domenico Prattichizzo.
MathWorks' links to sites containing MATLAB vision functions
Samuel Albrecht has produced a GIMP Octave Plugin which makes Octave scripts executable from inside GIMP.
You can download the plugin (and some of my functions that he has had to modify slightly) from