针对资源三号卫星影像水体提取的谱间关系法  

Spectral Relation Method for Water Body Extraction from ZY-3 Imagery

作　　者：王国华 裴亮[1] 杜全叶[2] 李旋[3] WANG Guohua;PEI Liang;DU Quanye;LI Xuan(School of Geomatics,Liaoning Technical University,Fuxin,Liaoning 123000,China;Chinese Academy of Surveying and Mapping,Beijing 100036,China;Jiangsu Provincial Institute of Geological Survey,Nanjing 210018,China)

机构地区：[1]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000 [2]中国测绘科学研究院,北京100036 [3]江苏省地质调查研究院,南京210018

出　　处：《遥感信息》2020年第3期117-121,共5页Remote Sensing Information

基　　金：DAAD战略合作伙伴与专题研究合作网络项目(57421148);中国测绘科学研究院基本科研业务项目(7771402、AR1902)。

摘　　要：针对现阶段水体提取的数据源多是国外测绘卫星数据且需要多波段、丰富光谱信息的问题,通过研究资源三号卫星影像中水体的光谱特征以及阴影的光谱特征,提出一种在资源三号卫星影像中水体提取的方法。运用单波段阈值法、归一化差分水体指数法、支持向量机法、基于阈值的谱间关系法4种方法对提取水体的效果进行比较分析。实验结果表明,本文提出的基于阈值的谱间关系法提取水体的效果比另外3种方法有明显提升,能有效剔除阴影的影响,并且能较好地提取影像中的细小水体。In view of the fact that the data sources of water extraction at present are mostly foreign surveying and mapping satellite data,which require many bands and rich spectral information,this paper researches the spectral characteristics of water bodies and the spectral characteristics of shadows in ZY-3 imagery,and proposes a water body extraction method in ZY-3 imagery.The single-band threshold method,the normalized differential water body index method,the support vector machine method,and the proposed method are used to compare and analyze the effects of water extraction.The experimental results show that the proposed method has a significant improvement over other three methods,which can effectively remove the effects of shadows and can better extract the small bodies of water.

关 键 词：资源三号卫星影像 水体提取 归一化差分水体指数 支持向量机法 新谱间关系法 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]