1. School of Electronic Information, Wuhan University, Wuhan, China
2. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing (LIESMARS), Wuhan University, Wuhan, China
3. Dongfeng USharing Technology Company, Wuhan, China
4. College of Civil and Transportation Engineering and the Institute of Urban Smart Transportation and Safety Maintenance, Shenzhen University, Shenzhen, China