1. Beijing Institute of Technology, School of Optics and Photonics, Key Laboratory of Photoelectronic Imaging Technology and System of Ministry of Education of China, Beijing, China
2. University of Delaware, Department of Electrical and Computer Engineering, Newark, Delaware, United States
3. Nanjing University of Posts and Telecommunications, School of Geographic and Biologic Information, Nanjing, China
4. Tongji University, School of Software Engineering, Shanghai, China
5. Northwest A & F University, School of Science, Yangling, China