1. State Key Laboratory of Surveying, Mapping and Remote Sensing (LIESMARS), Wuhan University, Wuhan, China
2. State Key Laboratory of Information Engineering in Surveying, Mapping, and Remote Sensing, Wuhan University, Wuhan, China
3. Harvard Medical School, Boston, MA, USA
4. School of Electronics and Communication Engineering,, Shenzhen Campus of Sun Yat-sen University, Shenzhen, China