The Vision and Media Lab
Shape Matching
We are studying shape representations, and their application to object recognition. In particular, we are exploring the use of "shape contexts" to recognize objects based on their overall shape.

For more information on using our shape matching techniques to break EZ-Gimpy, a visual CAPTCHA, please follow this link.

Greg Mori, Serge Belongie, and Jitendra Malik. Efficient Shape Matching Using Shape Contexts . IEEE Transactions on Pattern Analysis and Machine Intelligence , Nov 2005. [pdf]
Serge Belongie, Greg Mori and Jitendra Malik, Matching with Shape Contexts, Analysis and Statistics of Shapes, eds. T. Yezzi and H. Krim, Birkhäuser, 2005.