1. China University of Geosciences, Faculty of Information Engineering, Department of Surveying and Mapping Engineering, Room 303, Xingong Building, 388 Lumo Road, Hongshan District, Wuhan 430074, Hubei, China
2. China University of Geosciences, Faculty of Information Engineering, Department of Surveying and Mapping Engineering, Room 303, Xingong Building, 388 Lumo Road, Hongshan District, Wuhan 430074, Hubei, ChinabWuhan University of Engineering Science, Room 40