1. Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, Trondheim, Norway
2. Department of Information Science and Media Studies, University of Bergen, Bergen, Norway
3. Ontopic S.r.l, Bolzano, Italy
4. Faculty of Engineering, Free University of Bozen-Bolzano, Bolzano, Italy
5. Chair of Cartography and Visual Analytics, Technical University of Munich, Munich, Germany
6. Department of Computing Science, Umeå University, Umeå, Sweden