Zhaoyi Wei, Dah-Jye Lee, Brent E. Nelson, Kirt D. Lillywhite. Accurate Optical Flow Sensor for Obstacle Avoidance. In George Bebis, Richard D. Boyle, Bahram Parvin, Darko Koracin, Paolo Remagnino, Fatih Murat Porikli, Jörg Peters, James T. Klosowski, Laura L. Arns, Yu Ka Chun, Theresa-Marie Rhyne, Laura Monroe, editors, Advances in Visual Computing, 4th International Symposium, ISVC 2008, Las Vegas, NV, USA, December 1-3, 2008. Proceedings, Part I. Volume 5358 of Lecture Notes in Computer Science, pages 240-247, Springer, 2008. [doi]