R Manduchi, A Castano, A Talukder, L Matthies, "Obstacle Detection and Terrain Classification for Autonomous Off-Road Navigation," Autonomous Robots, 2005.
Dan Kong, Doug Gray and Hai Tao, "Counting Pedestrian in Crowds using view-invariant training," in Proc. British Machine Vision Conference, 2005. (PDF)
Yue Zhou, Yihong Gong, and Hai Tao, "Background modeling using time dependent Markov random field with image pyramid," in Proc. IEEE Motion’05, January 2005. (PDF)