基于ERDAS的蚀变遥感异常提取方法

遥感异常通常由于受多种因素干扰而多表现为“弱信息”，但这种信息与周围其它地物在光谱上必定存在一定的差别。结合前人有关地质信息提取的成熟方法，介绍了利用ERDAS IMAGINE图像处理及空间建模功能针对新疆某地进行矿化蚀变遥感信息提取的方法和过程，为蚀变遥感异常提取工作提供了便利。
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Extraction Method of Alteration Anomalies Based on ERDAS

For many kinds of distances,remote sensing anomalies usually exist in some weak information.The various changes of the spectrum curve and the multi-value and uncertainty of the image characters of the geologic bodies increase the difficulty in extracting the weak information,however,there must be some differences between the information and other things around it in spectrum.Meanwhile,with the increasing of the remote sensing resolution as well as the development of the technology in image progress,it is possible to extract the anomaly information.The paper introduces the method and process using the functions of image management and spatial modeling in ERDAS IMAGINE based on the mature methods for the extraction of geological information and has been applied in Xinjiang.This approach afforded a simple and convenient way for the extraction of alteration anomalies.