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Computer Vision Distinguished Speaker Series
Tensor Voting: Review, Applications to Computer Vision and Machine Learning

Dr. Gérard Medioni
Monday, March 26, 2007
2:00PM Harris Corporation Engineering Center - 125

Abstract


We first briefly review tensor voting, which is an efficient, non-iterative framework for tackling perceptual organization problems in arbitrary dimension spaces. It is based on data representation by second-order symmetric tensors, which allow a unified representation of inliers of smooth structures, discontinuities and outliers, and data communication by tensor voting, during which tokens propagate information in their neighborhood by casting tensor votes. Our framework has proven to be very robust even under extreme noise corruption, with a single free parameter, the scale of the voting field

The second part of the talk focuses on the application of tensor voting to real computer vision problems. Since many computer vision problems, such as stereo and motion analysis, can be expressed as the inference of smooth structures, they can be addressed within a perceptual organization framework.

Finally, we show how tensor voting can be applied to problems in higher dimensions, while keeping the computational complexity at reasonable levels.

Short Bio


Professor Gérard Medioni received the Diplôme d’Ingenieur from ENST, Paris in 1977, a M.S. and Ph.D. from the University of Southern California in 1980 and 1983 respectively. He has been at USC since then, and is currently Professor of Computer Science and Electrical Engineering, Chairman of the Computer Science Department, co-director of the Institute for Robotics and Intelligent Systems (IRIS), and co-director of the USC Games Institute. Professor Medioni has made significant contributions to the field of computer vision. His research covers a broad spectrum of the field, such as edge detection, stereo and motion analysis, shape inference and description, and system integration. He has published 3 books, over 50 journal papers and 150 conference articles, and is the recipient of 8 international patents. Prof. Medioni is associate editor of the Image and Vision Computing Journal, associate editor of the Pattern Recognition and Image Analysis Journal and of the International Journal of Image and Video Processing. He is a Fellow of IAPR, IEEE, and AAAI.

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