1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China
2. Department of Aviation and Aerial Photography, National Authority for Remote Sensing and Space Sciences, Cairo, Egypt
3. School of Electronic Information, Wuhan University, Wuhan, China
4. Department of Surveying Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt
5. School of Geodesy and Geomatics, Wuhan University, Wuhan, China