Pedro F. Felzenszwalb received his Ph.D. from M.I.T. in 2003; his advisor was W. Eric L. Grimson. He is currently an Associate Professor of Engineering and Computer Science at Brown University. His research interests include computer vision, artificial intelligence, machine learning and discrete algorithms.

Daniel P. Huttenlocher received his Ph.D. from M.I.T. in 1988; his advisors were W. Eric L. Grimson and Shimon Ullman. He is currently the John P. and Rilla Neafsey Professor of Computing, Information Science and Business at Cornell University. He is also Dean of Computing and Information Science at Cornell. His research interests include computer vision, geometric algorithms and large-scale networks.