After the analysis of the spectral structure between samples group on the TM/ETM imagery,a simple method is introduced and then used in a small area in Nanyang in this paper.

• 本文在现有研究的基础上,采用对TM/ETM图像上选取的样点群的谱间结构进行分析,建立信息提取专家模式,并选取了南阳市附近的小片区域进行了实验研究,结果表明该法简单易行。