Institution: | 1.National-Local Joint Engineering Laboratory of Geospatial Information Technology, Hunan University of Science and Technology, Xiangtan, 411100, China ;2.Department of Surveying and Mapping Engineering, Hunan University of Science and Technology, Xiangtan, 411100, China ;3.Department of Surveying and Mapping Engineering, Central South University of Forest and Technology, Changsha, 410004, China ; |