1. School of Computer Science and Technology, Henan Polytechnic University, Jiaozuo, People’s Republic of China
2. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo, People’s Republic of China
3. Center for Environmental Remote Sensing, Chiba University, Chiba, Japan
4. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, People’s Republic of China
5. Chinese Academy of Natural Resources Economics, Beijing, People’s Republic of China