Refined Extraction and Analysis of Minerals Based on ENVI and GIS
In order to give full play to the application of remote sensing software such as ENVI and GIS in the fine extraction and analysis of hyperspectral minerals,taking the old factory mining area and its periphery in Gejiu,Yunnan as the research area,the domestic GF-5 remote sensing data are used to extract the altered mineral information in the study area based on ENVI platform by spectral angle matching method and spectral feature fitting method.Based on statistical analysis software and GIS platform,the extracted altered mineral information in the study area is comprehensively analyzed by mathematical statistics,correlation and geophysical and geochemical remote sensing.The study shows that the alteration anomaly information extracted from the domestic GF-5 data is in good agreement with the geological and geophysical and geochemical information in the study area.The research shows that the domestic GF-5 data can be used to extract and analyze the altered minerals in the study area based on ENVI and GIS software platforms,and provide reference for the traditional geological prospecting work in the area.