1. School of Computer Science and Information Engineering, Zhejiang Gongshang University, Hangzhou, China
2. Key Lab of Forest Protection of State Forestry Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China
3. Faculty of Conservation Biology, Southwest Forestry University, Kunming, China
4. Quantitative Imaging Research Team, CSIRO Data61, Epping, Australia
5. Institute of Graphics and Image, Hangzhou Dianzi University, Hangzhou, China