1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, China
2. Guizhou Basic Geographic Information Center, Guiyang, China
3. Guizhou Tuzhi Information Technology, Guiyang, China
4. Land resource and information center of Guangdong province, Guangzhou, China
5. School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing, China