Athul Kaitheri, Université Côte d’Azur, CNRS, OCA, IRD, Geoazur, Valbonne, France, Anthony Mémin, Université Côte d’Azur, CNRS, OCA, IRD, Géoazur, Nice, France, Matt A King, University of Tasmania, Surveying and Spatial Sciences, School of Technology, Environments and Design, Hobart, TAS, Australia, Jean-Paul Boy, Université de Strasbourg, CNRS, EOST, IPGS UMR 7516, Strasbourg, France and Frederique Remy, CNRS - Legos, Toulouse, France