Minghelli-Roman A. auteur aut IRD Dupouy Cécile auteur aut IRD text journalArticle eng text/pdf born digital access Features on the seabed can be mapped from remote sensing multi/hyperspectral imagery, provided that their effects on the measured reflectance spectrum can be made independent of those produced by the atmosphere and water column. The nonlinear effect of water column light attenuation can then be corrected to obtain the absolute reflectance of the seabed. Light attenuation by the water column and bathymetry are both determined from the satellite image. The water column attenuation is then removed in order to apply an automated supervised classification, whatever the depth is. We have compared the results obtained with and without the correction of water column attenuation, for two different statistical measures: Euclidean (ED) and spectral angle mapper (SAM) distances. We have applied this methodology to MERIS images acquired on the lagoon of New Caledonia. The best overall accuracy (79%), as compared to in situ data, is obtained with the corrected image and the SAM distance. specialized LAGON FOND MARIN CARTOGRAPHIE TELEDETECTION SPATIALE IMAGE SATELLITE BATHYMETRIE REFLECTANCE ANALYSE STATISTIQUE ERREUR NOUVELLE CALEDONIE PACIFIQUE 032MILPHY 126TELAPP05 7 6 2619-2629 2014 1939-1404 https://www.documentation.ird.fr/hor/fdi:010062806 10.1109/JSTARS.2014.2307956 1939-1404 [F B010062806] https://www.documentation.ird.fr/hor/fdi:010062806 https://www.documentation.ird.fr/intranet/publi/depot/2014-08-22/010062806.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2014-08-22 2016-08-29 fdi:010062806 fre