1. State Key Laboratory of Resources and Environmental Information System, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
2. Department of Mathematics and Information Science, Chang’an University, Xi’an, China
3. Australasian Joint Research Centre for Building Information Modelling, School of Built Environment, Curtin University, Perth, Australia
4. Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, Netherlands