CJ is a professor at University of Pennsylvania’s GRASP lab, which he joined in 1997. His research interests focus on computer vision and robotics. His current research include work on self-localizing embedded smart camera systems and their applications to problems such as automated surveying systems, ad-hoc surveillance systems, three-dimensional reconstruction and mobile robot localization. He received his A.B. degree in Electrical Computer and Systems Engineering from Harvard College in 1988 and his M.S. and Ph.D. degrees from Yale University in 1990 and 1994 respectively.