1. Lecturer, School of Remote Sensing and Geomatics Engineering, Nanjing Univ. of Information and Technology, Jiangsu 210044, China. ORCID: .
2. Professor, College of Surveying and Geomatic, Tongji Univ., Shanghai 200029, China (corresponding author).
3. Master’s Student, College of Surveying and Geomatic, Tongji Univ., Shanghai 200029, China. ORCID: .
4. Associate Professor, School of Remote Sensing and Geomatics Engineering, Nanjing Univ. of Information and Technology, Jiangsu 210044, China.