1. Wuhan University, State Key Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing, 129 Luoyu Road, Wuhan 430079, ChinabShenzhen Research and Development Center of State Key Laboratory for Information Engineering in Surveying, Map
2. Huazhong University of Science and Technology, School of Electronics Information and Communications, 1037 Luoyu Road, Wuhan 430074, China
3. Wuhan University, State Key Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing, 129 Luoyu Road, Wuhan 430079, China
4. Wuhan University, State Key Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing, 129 Luoyu Road, Wuhan 430079, ChinadChinese Academy of Surveying & Mapping, Lianhuachixi Road 28, Haidian District, Beijing City 100830, China