1. Space Information and Big Earth Data Research Center, College of Computer Science and Technology, Qingdao University, Qingdao, People’s Republic of China
2. College of Oceanography and Space Informatics, China University of Petroleum (East China), Qingdao, People’s Republic of China
3. Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, People’s Republic of China
4. School of Geographic Sciences, Hebei Normal University, Shijiazhuang, People’s Republic of China
5. Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, Shijiazhuang, People’s Republic of China