1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, PR China
2. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, PR China
3. Department of survey and design, Tianjin Survey and Design Institute Group Co., Ltd, Tianjin, China
4. Forestry College of Southwest Forestry University, Institutes of Big Data and Artificial Intelligence, Southwest Forestry University, Kunming, China