Yu-Jin Zhang is a tenured professor of image engineering at Tsinghua University, Beijing, China. He earned his PhD in Applied Science from the State University of Liège, Liège, Belgium. He was a post-doc fellow of Delft University of Technology, Delft, the Netherlands. He is also a CSIG and SPIE fellow. Dr. Zhang has published 50 books and more than 500 research papers. Personal pages: http://oa.ee.tsinghua.edu.cn/zhangyujin/ http://web.ee.tsinghua.edu.cn/zhangujin/