1. Department of Building and Real Estate, Research Institute of Sustainable Urban Development, The Hong Kong Polytechnic University, Hong Kong 999077, China
2. School of Design, The Hong Kong Polytechnic University, Hong Kong 999077, China
3. Department of Land Surveying and Geo–Informatics, Research Institute for Land and Space, The Hong Kong Polytechnic University, Hong Kong 999077, China
4. School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China