1. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo, People’s Republic of China
2. College of Surveying and Geo-Informatics and State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, People’s Republic of China
3. Shanghai Institute of Intelligent Science and Technology, Tongji University, Shanghai, People’s Republic of China
4. College of Marine Science, Shanghai Ocean University, Shanghai, People’s Republic of China