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遥感技术与应用  2008, Vol. 23 Issue (1): 57-61    DOI: 10.11873/j.issn.1004-0323.2008.1.57
研究与应用     
基于TM影像的珠江三角洲河道快速提取方法研究
刘旭拢1,钟凯文1,陈志良2,黄建明1,刘万侠1
(1.广州地理研究所,广东省遥感与地理信息系统应用重点实验室,广东省环境科学与技术公共实验室,
广东广州 510070;2.国家环境保护总局华南环境科学研究所,广东广州 510655 )
Fast Extraction Technique of River Channels Based on Landsat TM
LIU Xu-long1, ZHONG Kai-wen1, CHEN Zhi-liang2,HUANG Jian-ming1,LIU Wan-xia1
(1.Guangdong Key Lab for Application of RS and GIS , Public Lab of Environment Science and
Technology of Guangdong Province, Guangdong Institute of Geography, Guangzhou510070, China;
2. South China Institute of Environmental Science, SEPA, Guangzhou510655, China)
 全文: PDF(1718 KB)  
摘要:

快速、准确提取河流水体信息是河道开发和治理的基础。在综合分析前人已有研究成果的基础上,以珠江三角洲佛山市境内河网为例,通过对TM影像上水体的遥感信息机理分析,建立多种水体指数模型,并对这些指数模型进行对比分析,结果发现比值指数模型最适合于网河区河流水体的提取。在此基础上,对比值指数模型提取结果进行空间聚类得到网状水系图,并利用形状指数进行修正,将遗漏的细小河流补充进来,最后得到河道水体专题图,精度评价的结果显示其精度可以达到93.7%,说明该方法具有较好的可用性和有效性。特别是应用于河网密布、鱼塘众多,同时人为干扰强烈区域的河道信息提取时具有重要的现实与理论意义。

关键词: 水体指数模型Landsat TM网河区珠江三角洲    
Abstract:

It is the basis for river management, development and remediation to extract and acquire accurate water
information using remote sensing and GIS techniques. A net river region of Foshan in the Pearl River Delta was se-
lected as study area. After analyzing the spectral characteristics of river water bodies and other objects in Landsat
TM images, several water indices models were established. Among these models, ratio water indices model(RWI)
proved to be the best one. Then, the results of RWI were taken to get water thematic images by using special clus-
tering analysis method, as a result, the main water information were extracted from other spectrums. In addition
to these, the missing small rivers were checked out by the shape index. Accurate assessment indicated that this
technique is feasible and effective, furthermore, accuracy can reach 93.7%. That is, the method has important ac-
ademic and practical significance,especial for the water information of net river region, where the river web is more
complicated and human interference is intense.

Key words: Water indices model    Landsat TM    Net river    Pearl River Delta
收稿日期: 2007-07-06 出版日期: 2011-10-24
:  TP 79  
基金资助:

广东省自然科学基金(6020300),广东水利厅应用推广项目资助(2005-18)。

通讯作者: 陈志良(1976-),男,工程师,主要从事全球变化与地表生态过程研究。E-mail:zhiliangchen521@126.com。     E-mail: lxlong@gdas.ac.cn。
作者简介: 刘旭拢(1978-),女,硕士研究生,主要从事遥感应用与定量遥感研究。E-mail:lxlong@gdas.ac.cn。
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引用本文:

刘旭拢,钟凯文,陈志良,黄建明,刘万侠. 基于TM影像的珠江三角洲河道快速提取方法研究[J]. 遥感技术与应用, 2008, 23(1): 57-61.

LIU Xu-long, ZHONG Kai-wen, CHEN Zhi-liang,HUANG Jian-ming,LIU Wan-xia. Fast Extraction Technique of River Channels Based on Landsat TM. Remote Sensing Technology and Application, 2008, 23(1): 57-61.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2008.1.57        http://www.rsta.ac.cn/CN/Y2008/V23/I1/57

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