1. Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
2. Guangdong – Hong Kong-Macau Joint Laboratory for Smart Cities, Shenzhen, People's Republic of China
3. Smart Cities Research Institute, The Hong Kong Polytechnic University, Kowloon, Hong Kong
4. Key Laboratory of Virtual Geographic Environment (Ministry of Education of PRC), Nanjing Normal University, Nanjing, People’s Republic of China
5. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, People’s Republic of China
6. State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing, People’s Republic of China
7. College of Surveying and Geo-Informatics, Tongji University, Shanghai, People’s Republic of China