摘要
选择一个合理的地质剖面,通过蚀变带与逐个岩性特征波谱向量的比较,可以求出提取蚀变带信息的TM图像最佳波段组合。这种方法要通过蚀变带与其它岩性的波谱向量相似系数和向量模量差所构成的q-τ图解来实现,将波谱向量q-τ图解应用于滇西某金矿区。
Each pixel of a false color TM combination image is composited by three gray scals of three simple spectral images in order,which are transported into red,yellow,blue lights separately.Three gray scals in order structure a three dimensional vector called spectral vector.By choosing a rational geological section,comparing the characteristic spectral vector between alteration’s and other lithologe’s,we can obtain the best spectral composition of TM image for the collection of alteration.This method is called lithologic characteric spectral vector of geological section comparement.Its application in a gold mineralized eara in the westen of Yunnan,proves the method is effectively on large scale mineral deposits prespection.
出处
《地质科技情报》
CAS
CSCD
北大核心
1999年第1期89-92,共4页
Geological Science and Technology Information
基金
核工业云南地调队科技项目
关键词
图像处理
波谱信息
最佳波段组合
矿物分析
金矿
image processing method,alteration spectral imformation,the best spectral composition of image