タイトル（掲載誌）Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集
一般注記type:text
[ABSTRACT] ASTER data are attractive to many geological researchers due to their high spatial and spectral resolutions. This work examines ability of ASTER data to map hydrothermal minerals in an arid area in Central Eastern Desert, Egypt, using spectral analysis techniques. Visible, near infrared and short wave infrared reflectance data (first 9 bands) are utilized. Minimum noise fraction (MNF) transformation is executed on the data and then pixel purity index (PPI) run on the new data set. N-dimensional visualization is carried out on the PPI to extract pure pixels. Extreme pure pixels are identified from the pure pixels. Spectra of these extreme pure pixels are compared with NASA JPL spectra of minerals available in the study area, by both specral angle mapper (SAM) and spectral feature fitting (SFF) giving two lithological maps. Against reference lithological data, the overall accuracies of the two maps are 78.85%, 70.33% respectively, Proving applicability of ASTER data in lithological mapping.
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）