1. Key Lab of Guangdong for Utilization of Remote Sensing and Geographical Information System, Guangdong Open Laboratory of Geospatial Information Technology and Application, Guangzhou Institute of Geography, Guangzhou, China
2. Department of Geography, National University of Singapore, Singapore, Singapore
3. 'Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
4. System Planning Branch, Ministry of Transportation Ontario, Toronto, Canada
5. Department of Civil Engineering, Ryerson University, Toronto, Canada
6. Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, Trondheim, Norway
7. GIScience Research Group, Institute of Geography, Heidelberg University, Heidelberg, Germany