1. Research Center of Forestry Remote Sensing & Information Engineering, Central South University of Forestry & Technology, Changsha, China
2. Key Laboratory of State Forestry Administration on Forest Resources Management and Monitoring in Southern Area, Changsha, China
3. Key Laboratory of Forestry Remote Sensing Based Big Data & Ecological Security for Hunan Province, Changsha, China
4. Hunan Institute of Surveying and Mapping Technology, Changsha, China