基于Hyperion数据的粘土矿物权重信息提取研究--以江西省赣州地区为例

The Weight Information Extraction of Clay Minerals Based on Hyperion Data:a Case Study of Ganzhou Area,Jiangxi Province

以Hyperion数据为信息源,以江西省赣州地区为研究区,进行了粘土矿权重信息提取方法研究。通过对光谱角制图(SAM)和匹配滤波(MF)两种方法的对比,提出了将二者相结合确定各类粘土矿物权重信息的综合方法。实验结果表明,该方法能结合二者的优点,弥补相互之不足,从图像背景中准确提取出了各类粘土矿物的权重信息,部分权重大的粘土分布位置及其类型与采样点的位置及样品分析结果相吻合,证明了该方法的可行性。

With Ganzhou area in Jiangxi province as the study area, this paper deals with the methods for extracting clay information from Hyperion data. Based on studying advantages and disadvantages of Spectral Angle Mapper （SAM） and Matched Filtering （MF）, the authors have developed a method that combines SAM and MF to fix the information of all kinds of clay minerals in the study area. The results show that this method can be successfully used to Hyperion data and can totally integrate SAM with MF by combining their advantages, remedying their shortcomings, and accurately extracting the weight of information of clay minerals from the background image. In addition, the major parts of the weights of the locations and types of clay are consistent well with the sampling locations and the analytical results of the samples, suggesting the feasibility of this method.