1. School of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha, China
2. School of Electronics and Information Engineering, Hebei University of Technology, Tianjin, China
3. Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany
4. AI4RS (artificial intelligence for remote sensing), Institute of Advanced Research in Artificial Intelligence (IARAI), Vienna, Austria
5. Faculty of Information Technology, Beijing University of Technology, Beijing, China