The Structural Information and Alteration Information Extraction and Metallogenic Prognosis in Laos Area

Remote sensing extraction of geological anomalies is one of the important research in GARS.Using ETM+ image rectification, image mosaic, color composite, color space transformation,kids of image enhancement processing to extract structure information. Removal of interference information by mask, with principal component analysis and threshold segmentation technique for iron staining and hydroxy alteration information extraction.Four mineral potential targets has been delineated when synthetically analysising of geological information.The predicting the mineralization above provides a reference and effective way to accelerate geological prospecting work in Laos.