Evaluation and digital processing of multispectral SPOT data

Abstract

On the basis of multispectral SPOT data of a test site in southern Algeria(Djebel Amour) the high correlation of the spectral bands S1 and S2 (green and red) could be demonstrated. Due to this fact, the geological application possibilities by means of standard products (e.g. false colour composite) are strongly decreased. The application of advanced image processing techniques on the basis of the I-H-S colour transform, however, enable an improved presentation of subtle spectral differences and, therefore, a better differentiation of geologically relevant phenomena.