Affiliation: | a Laboratory of Geographical Information Systems (LASIG), Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 18, CH-1015 Lausanne, Switzerlandb Medical Image Processing Lab, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 17, CH-1015 Lausanne, Switzerlandc University of Geneva, Rue Gabrielle-Perret-Gentil 4, CH-1211 Geneva, Switzerlandd Laboratory of Engineering and Environmental Geology (GEOLEP), Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 18, CH-1015 Lausanne, Switzerland |