1. Ph.D. Student, College of Surveying and Geo-Infomatics, Tongji Univ., Shanghai 20092, China. ORCID: .
2. Professor, College of Surveying and Geo-Infomatics, Tongji Univ., Shanghai 20092, China (corresponding author).
3. Master’s Student, College of Surveying and Geo-Infomatics, Tongji Univ., Shanghai 20092, China. ORCID: .