Tong-Yee Lee received the PhD degree in computer engineering from Washington State University, Pullman, in May 1995. He is currently the Chair Professor in the Department of Computer Science and Information Engineering, National Cheng-Kung University, Tainan, Taiwan, R.O.C. His current research interests include computer graphics, nonphotorealistic rendering, image-based rendering, visualization, virtual reality, surgical simulation, medical visualization and medical system, and distributed and collaborative virtual environments.