Meng An was born in 1982. He received his B.S. degree in the School of Informatics from University of International Business and Economics, and M.S. degree in School of Informatics from the University of Manchester. He is now a Ph.D. candidate in School of Astronautics, Beihang University. His research interests are object recognition and image registration. E-mail: anmeng925@hotmail.com,Corresponding author. Zhiguo Jiang was born in 1964. He received his B.S., M.S. and Ph.D. degrees in Beijing University of Aeronautics and Astronautics. Now he is a doctorial supervisor in Beihang University. His research interests are remote sensing image and medical image process. E-mail: jiangzg @buaa.edu.cn Danpei Zhao was born in 1979. She received her B.S. and M.S. degrees in Changchun University of Science and Technology. And she received her Ph.D. degree in Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences. Now she is a lecturer in Beihang University. Her research interests are object detection, track and recognition. E-mail: zdp1223@yahoo.cn