WANG Tao~1, LIU Shao-feng~2, YANG Jin-zhong~3, et al. An Improved SAM Classification with Direction of Irradiance and Its Application——The Studies on ETM Data[J]. Journal of Remote Sensing, 2007, (1): 77-84. DOI: 10.11834/jrs.20070111.
This paper took the western part of Beishan area in Xinjiang as an example to study the methods of extracting alteration information from multispectral remote sensing imagery.After studying advantages and disadvantages of spectral angle mapper(SAM)
a method has been developed which improves SAM classification with irradiance of objects.This method has been successfully employed to the extration of alteration information in the test areas.Comparing with spectral angle mapper method
this method is able to remove majority false anomly information.An effective method to remove false anomly information in multispectral remote sensing anomly information extraction has been developed.