1. School of Geography and Planning, Sun Yat-Sen University, Guangzhou, People’s Republic of China
2. Guangdong Provincial Engineering Research Center for Public Security and Disaster, Guangzhou, People’s Republic of China
3. Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
4. The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, People’s Republic of China