1. Department of Photogrammetry and Geoinformatics, Budapest University of Technology and Economics, Budapest, Hungary
2. Dipartimento Di Informatica, Sistemistica E Comunicazione, University of Milano-Bicocca, Milan, Italy
3. GIS Department, Dubai Municipality, Dubai, UAE
4. Key Laboratory of Earth Observation and Geospatial Information Science, Chinese Academy of Surveying and Mapping, Beijing, China
5. School of Resource and Environmental Sciences, Wuhan University, Wuhan, China