1. Institute of Geography and Geoecology (IFGG), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
2. Photogrammetry Research Area, Department of Geodesy and Geoinformation, Wien, Austria
3. Department of Basic Sciences in Engineering Sciences, University of Innsbruck, Innsbruck, Austria
4. 3DGeo Research Group, Institute of Geography, Heidelberg University, Heidelberg, Germany
5. Global Change Research Institute of the Czech Academy of Sciences, Brno, Czech Republic
6. Interdisciplinary Centre for Scientific Computing (IWR), Heidelberg University, Heidelberg, Germany
7. Department of Geomatics, Forest Research Institute, Sekocin Stary, Raszyn, Poland
8. Remote Sensing and Geoinformatics, Freie Universität Berlin, Berlin, Germany