Qiang Li is pursuting his PhD in School of Computer Science and Technology, Tianjin University, China. His research interests include machine learning based image and video processing, and data mining. Yahong Han received the PhD degree from Zhejiang University, Hangzhou, China. He is currently an associate professor in School of Computer Science and Technology, Tianjin University, Tianjin, China. His current research interests include multimedia analysis, retrieval, and machine learning.E-mail: yahong@tju.edu.cn Jianwu Dang graduated from Tsinghua University, China in 1982, and got his MS at the same university in 1984. He worked for Tianjin University as a lecturer from 1984 to 1988. He was awarded the PhD from Shizuoka University, Japan in 1992. He worked for ATR Human Information Labs., Japan, as a senior Processing researcher from 1992 to 2001. He joined the University of Waterloo, Canada, as a visiting scholar for one year from 1998. Since 2001, he has moved to Japan Advanced Institute of Science and Technology (JAIST). He joined the Institute of Communication Parlee (ICP), Center of National Research Scientific, France. He is as "One Thousand Plan" distinguished expert in China since 2010 and National "973 Project" chair scientist. His research interests are in all the fields of signal processing.