Corresponding author Kun Liu was born in 1982. She received her B.S. degree from Jilin University in 2004. Then she received her M.S. and Ph.D. degrees from Northwestern Polytechnical University in 2007 and 2009 respectively. Now she is a lecturer of School of Information Engineering, Shanghai Maritime University. Her main research interest includs image fusion. E-mail: cc_liukun@ 163.com Lei Guo was born in 1956. He is currently a professor in Northwestern Polytechnical University. His research interest includes image processing. E-mail: lguo@nwpu.edu.cn Jingsong Chert was born in 1981. He received his B.S. and M.S. degrees from Northwestern Polytechnical University. Now he is an engineer of China National Aeronautical Radio Electronics Research Institute. His research interest in- cludes signal processing. E-mall: chenjingsong_615@ 163.com