Qi-Cong Wang graduated from Nan- jing University of Aeronautics and Astro- nautics, PRC in 1997. He received the M. Sc. degree from Zhejiang University of Technology, PRC in 2004, and the Ph.D. degree from Zhejiang University, PRC in 2007. He is currently an assistant professor in the Department of Computer Science at Xiamen University, PRC. His research interests include computer vision, image process- ing, information fusion, and artificial intelligence. E-maih qcwang@xmu.edu.cn (Corresponding author) Yuan-Hao Gong received the bachelor degree from Tsinghua University, PRC in 2007. He is currently a master student at Department of Computer Science, Xiamen University, PRC. He is a member of IEEE, and ACM. His research interests include image pro- cessing and understanding, computer vision, and pattern recognition. E-mail: yuanhaogong@acm.org Chen-Hui Yang received the Ph.D. degree in Zhejiang University, PRC. He is currently a professor in the Department of Computer Science at Xiamen University, PRC. His research interests include computer visions, image processing and analysis, artificial intelligence in traffic and its application. E-mail: chyang@xmu.edu.cn Cui-Hua Li received the Ph.D. degree in the Institute of Artificial Intelligence and Robotics from Xi'an Jiaotong University, PRC. He is currently a professor in the De- partment of Computer Science at Xiamen University, PRC. His research interests include computer visions, image processing and analysis,wavelet transformation theory and its application. E-mail: cuihuali@xmu.edu.cn