1. School of Civil Engineering Southeast University Nanjing China
2. Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hong Kong China
3. School of Information Science and Engineering Wuhan University of Science and Technology Wuhan China
4. Department of Land Surveying and Geo‐Informatics The Hong Kong Polytechnic University Hong Kong China
5. Department of Electrical Engineering The Hong Kong Polytechnic University Hong Kong China