1. Tongji University, College of Electronics and Information Engineering, Shanghai, China
2. National Administration of Surveying, Mapping and Geoinformation, Key Laboratory of Watershed Ecology and Geographical Environment Monitoring, Ji’an, Jiangxi, ChinacJinggangshan University, School of Electronic Information and Engineering, Ji’an, Jiangxi, China
3. Shanghai Institute of Technology, School of Computer Science and Information Engineering, Shanghai, China