基于混合像元分解技术的植被信息抑制研究与应用  

Research on Vegetation Information Suppression Based on Mixed Pixel Unmixing and Its Application

作　　者：潘建平 蒲艺 涂文丽 邓福江 李明明 徐永杰 王春晓 PAN Jianping;PU Yi;TU Wenli;DENG Fujiang;LI Mingming;XU Yongjie;WANG Chunxiao(Department of Surveying and Mapping,Chongqing Jiaotong University,Chongqing 400074,China;Hainan Basic Geographic Information Center,Ministry of Natural Resources,Haikou 570203,China)

机构地区：[1]重庆交通大学测绘系,重庆400074 [2]自然资源部海南基础地理信息中心,海南海口570203

出　　处：《测绘地理信息》2023年第3期82-86,共5页Journal of Geomatics

基　　金：贵州省地矿局2019年局管科研项目(黔地矿科合201909);重庆市规划和自然资源局科技项目(KJ-2020010);国家自然科学基金(41801394);重庆市教育委员会科学技术研究项目(KJQN201900729);自然资源部科技创新人才培养工程青年人才资助项目(12110600000018003932)。

摘　　要：植被覆盖直接影响地质信息提取的精度,是遥感地质中的难点。利用混合像元分解方法可从像元中剥离出植被成分,进而获得相对纯粹的地质信息,因此具有抑制植被信息的作用。利用混合像元分解方法分解图像的植被像元组分,利用归一化植被指数变化情况描述植被抑制效果,并结合主成分分析法对实验区域进行地层界线划分。结果表明,该方法可有效划分地层界线。Vegetation coverage directly affects the accuracy of geological information extraction,which is a difficulty in re⁃mote sensing geology.The mixed pixel unmixing method can be used to extract the vegetation components from the pixels,and obtain relatively pure geological information,so this method can suppress vegetation information.We adopt this method to decompose the vegetation pixel components of the image,and use normalized differential vegetation index change to describe the vegetation suppression effect,and then apply principal component analysis method to divide the stra⁃tum boundaries in the experimental area.The results show that the proposed method can effectively divide the stratum boundaries.

关 键 词：混合像元分解 植被抑制 ASTER 地层界线 

分 类 号：P237[天文地球—摄影测量与遥感]