内蒙古西乌珠穆沁旗地区围岩蚀变的遥感信息提取

REMOTE SENSING INFORMATION EXTRACTION OF WALL ROCK ALTERATION IN XI UJIMQIN BANNER,INNER MONGOLIA

根据研究区岩石光谱特征位置选择ETM波段;通过图像掩膜去除集中分布的地表干扰信息,再用主成分变换方法增强蚀变信息;用假彩色合成和非监督分类提取蚀变信息。

Mask technique is applied to eliminate interfere factors at surface and principal component transfer technique is used to enhance the alteration information and the alteration information is extracted by using false color composite and unsuperised classification techniques.