and Desrochers A.," Validated Spectral Angle Mapper Algorithm for Geological Mapping: Comparative Study between Quickbird and Landsat-TM", isprs conferences

The aim of this study is to validate the Spectral Angle Mapper (SAM) algorithm for geological mapping in Central Jebilet Morocco and compare the results between high and medium spatial resolution sensors, such as Quickbird and Landsat TM respectively. The geology of the study area is dominated by the Sahrlef schist, which is intruded by numerous bodies of acidic and basic magmatic rocks and lens-shaped pyrrhotite stratabound massive deposits. The results show that SAM of TM data can provide mineralogical maps that compare favorably with ground truth and known surface geology maps. Even do, Quickbird has a high spatial resolution compared to TM; its data did not provide good results for SAM because of the low spectral resolution. 1