Andrew Witkin is a Professor of Computer Science, Robotics, and Art at Carnegie Mellon University. Prior to joining the Carnegie Mellon faculty, he was director of the Perception and Graphics groups at Schlumberger's Palo Alto Research Lab. He received his BA from Columbia College in 1975 and his PhD from MIT in 1980. Dr. Witkin has published extensively in the areas of Computer Vision and Computer Graphics. He serves as an associate editor for ACM Transactions on Graphics, has served on numerous conference program committees, and is a fellow of the American Association for Artifical Intellgience. His awards include Best Paper prizes at the National Conference on Artifical Intellegence and the International Joint conference on Artifical Intellgence, the Grand Prix for Animation at the 1987 Parigraph competition in Paris, France, and the Grand Prix for Computer Graphics, Prix Ars Electronica 1992, Linz, Austria.