基于小波变换的岩心高光谱特征提取及波谱匹配方法  

Extraction of hyperspectral features from drilling core and its spectrum matching based on wavelet transform

作　　者：柳炳利[1,2] 张立[2] 黄昕蕾[2] 郭科[2] 李程[2] 赵丽[2] 王玉兰[2] 陈聆[2] LIU Bing-li ZHANG Li HUANG Xin-lei GUO Ke LI Cheng ZHAO Li WANG Yu-lan CHEN Ling(Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geoscience , LangJang 065000, China Key Laboratory of Geomathematics of Sichuan Province, Chengdu University of Technology, Chengdu 610059, China)

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [2]成都理工大学数学地质四川省重点实验室,成都610059

出　　处：《成都理工大学学报（自然科学版）》2016年第5期630-634,共5页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：中国地质调查局项目(12120114002001);国家自然科学基金应急管理项目(41541023)

摘　　要：探讨岩心矿物高光谱特征提取和快速波谱匹配的方法。将小波变换应用于岩心高光谱的特征提取,以多尺度小波系数能量值为特征表示方法,以光谱角度匹配为矿物波谱匹配方法。针对湖北省大冶市鸡冠咀铜金矿的10条实测光谱,采用光谱角度匹配方法对实测波谱与标准波谱的多尺度小波系数能量值进行匹配,得到的矿物匹配结果与钻孔柱状图中的实际矿物完全吻合,验证了该方法的可靠性。多尺度小波系数能量值可以作为岩心高光谱的波谱特征,光谱角度匹配法在岩心高光谱的波谱匹配中同样具备适宜性。Method for extraction of hyperspectral features from drilling cores and its spectral matching based on wavelet transform is investigated. Multi scale wavelet coefficients are used to build the features and spectral angle mapper （SAM） method is used to construct the matching method. 10 measured spectral in Jiguanzui copper gold deposit is analyzed. Experiment results indicate that the matching result is identical with the mineral in the borehole diagram. The proposed method shows a better performance on mineral identification by the combination of wavelet transforms and spectral angel mapper.

关 键 词：岩心高光谱 小波变换 特征提取 波谱匹配 

分 类 号：P628.1[天文地球—地质矿产勘探]