ISPRS-ArchivesISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesISPRS-ArchivesInt. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.2194-9034Copernicus PublicationsGöttingen, Germany10.5194/isprs-archives-XLII-4-W2-1-2017PREFACEBrovelliM. A.1KotzinosD.2PaparoditisN.3RaghavanV.4Department of Civil and Environmental Engineering, Politecnico di Milano, Milano, ItalyLab. ETIS UMR 8051, University Paris-Seine, Univ. Cergy-Pontoise, ENSEA, CNRS, Cergy-Pontoise, FranceUniversity Paris Est, IGN, ENSG, Champs-sur-Marne, FranceMedia Center, University Osaka City, Osaka, Japan05072017XLII-4/W212This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/This article is available from https://isprs-archives.copernicus.org/articles/isprs-archives-XLII-4-W2-1-2017.htmlThe full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/isprs-archives-XLII-4-W2-1-2017.pdf