摘要
围岩蚀变是热液成矿作用发生过程的一个重要标志。国内外学者为了利用遥感技术提取围岩蚀变信息,开展了多种图像处理方法研究,如主分量阀值分析法、光谱角法、混合像元分解法、高植被覆盖区矿化蚀变信息提取等。本文综述了在地表覆盖类型不同、地表覆盖程度不同的背景下,特别是植被覆盖严重地区的蚀变遥感异常提取的理论依据及异常提取方法的研究现状,并对多光谱蚀变遥感异常提取的发展前景提出一些设想。
Wallrock alteration is an important index during the hydrothermal mineralization process. To extract wallrock alteration information base d on remote sensing technique, many researchers have studied lots of ways of image process, such as the principal component threshold analysis, the spectral angle, the spectral unmixing,the mineralization alteration information extracting in the badly convered vegetation areas and so on. In the paper, we have reviewed the alteration remote sensing anomaly extraction theory foundation and the studied status of alteration anomaly extraction methods under the different type of covered surface and different covered rate, especially in the badly covered by vegetation area. At last, some suggestions are given for future studied.
出处
《遥感信息》
CSCD
2008年第4期98-101,108,共5页
Remote Sensing Information
基金
河北省国土资源厅项目资助(061225-1)
关键词
蚀变遥感异常
信息提取
图像处理
多光谱
alteration remote sensing anomaly
information extraction
image processing
multi-spectral
