Image-analysis and cartography of sand hill massifs on high resolution images : application to the Great Western Erg (NW of Algerian Sahara) Callot, Y. /Mering, Catherine Simonin, A. CARTOGRAPHIE AUTOMATIQUE DESERT DUNE CONTINENTALE IMAGE SATELLITE SATELLITE SPOT METHODE D'ANALYSE ANALYSE D'IMAGE MORPHOLOGIE MATHEMATIQUE RECONNAISSANCE DE FORME PHOTOINTERPRETATION ETUDE COMPARATIVE 1994 text https://www.documentation.ird.fr/hor/fdi:010025369 fdi:010025369 Callot Y., Mering Catherine, Simonin A.. Image-analysis and cartography of sand hill massifs on high resolution images : application to the Great Western Erg (NW of Algerian Sahara). 1994, 15 (18), 3799-3822 EN ZONE ARIDE ALGERIE