【植被覆盖区卫星TM数据矿化蚀变信息提取及其在成矿预测中的应用】.pdf

植汽颗盖区卫星TM数据矿化蚀变信息提取及其在成矿预测中的应用摘要本次工作着重研制了一种利用陆地卫星TM数据在有植被覆盖的湿润亚热带火山岩区自动提取热液蚀变信息的新方法,文中首次引用一种定向主成份分析方法用于消除TM5/TM7波段比值中的植被组份,增强TH7波段处有光谱吸收特性的含羟基蚀变矿物信息然后在得到的蚀变信息增强图像(PC*2)基础上,进一步自动识别、提取、显示与矿化有关的蚀变带采用已知健变区样本训练和 PC*2图像直方图训练相结合的双向选择法则。

ATechnique forUsingLandsatTM BatatoExtractMineralAlterationInformation underRangeVegetationandItsApplicationin Mineral Prospecting Abstract Anewtechnique forhydrothermalalterationzone automaticextractioninmoistsubtropicalzonevol-TM data,is mainlydesigned here.

In general,this study is very successful.It has realistic conduct significance for large scale pi nerelprospecting,and can supplyan effectivemethod foralterationinformation extraction,geological structurefeatureanalysisandintegratedminerel prospecting in subtropical volcanic area covered by vegeta