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国土资源遥感  2014, Vol. 26 Issue (4): 41-45    DOI: 10.6046/gtzyyg.2014.04.07
  技术方法 本期目录 | 过刊浏览 | 高级检索 |
EMD与分形相结合的遥感影像水体信息提取方法
周林滔, 杨国范, 赵福强, 杜娟
沈阳农业大学水利学院, 沈阳 110866
Water information extraction from remote sensing image using EMD and fraction method
ZHOU Lintao, YANG Guofan, ZHAO Fuqiang, DU Juan
College of Water Recourses, Shenyang Agriculture University, Shenyang 110866, China
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摘要 

提出一种基于经验模态分解(empirical mode decomposition,EMD)和分形理论相结合的遥感影像水体信息提取方法,该方法尝试结合影像的光谱特征和纹理特征以提高分类提取精度。对影像进行主成分分析得到有效信息量最大的第一主分量,计算每个像元的分维数得到分维图,同时将第一主分量EMD分解得到有效信息量较大的前3个经验模态函数,再结合原有的波段信息作为研究数据,利用极大似然法分类器提取水体信息。该方法充分结合了EMD在降噪和区分相似光谱特征中的优势和分形理论在纹理信息提取中的优势。研究表明,该方法可有效提高水体信息的提取精度,Kappa最高到0.932 5。

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关键词 TerraSAR-X全极化SAR数据海冰信息提取面向对象    
Abstract

This paper presents a model for extracting water from remote sensing by using empirical mode decomposition(EMD)and fractal theory. The authors tried to improve accuracy with spectral information and texture characteristics. Principal component analysis was carried out on the image to obtain the biggest first principal component that contains effective information, then the fractal dimension of each pixel was calculated; at the same time, the first principal component was decomposed with the method of EMD to get the first three empirical mode functions, which, coupled with the original band information, served as the research data. With the method of maximum likelihood classifier, the waters were extracted. This method fully combines the advantages of EMD method in noise reduction and the advantage of fractal theory in texture information extraction. Experiment shows that this method can effectively improve the extraction accuracy, with the Kappa up to 0.932 5.

Key wordsTerraSAR-X    polarimetric SAR    extraction of sea ice    object-oriented algorithm
收稿日期: 2013-09-10      出版日期: 2014-09-17
:  TP75  
通讯作者: 杨国范(1963-),男,教授,博士生导师,主要从事3S技术与数字水利等方面的研究。Email:81041678@163.com。
作者简介: 周林滔(1988-),男,硕士研究生,主要从事3S技术与数字水利等方面的研究。Email:zhou.liang.tao@163.com。
引用本文:   
周林滔, 杨国范, 赵福强, 杜娟. EMD与分形相结合的遥感影像水体信息提取方法[J]. 国土资源遥感, 2014, 26(4): 41-45.
ZHOU Lintao, YANG Guofan, ZHAO Fuqiang, DU Juan. Water information extraction from remote sensing image using EMD and fraction method. REMOTE SENSING FOR LAND & RESOURCES, 2014, 26(4): 41-45.
链接本文:  
https://www.gtzyyg.com/CN/10.6046/gtzyyg.2014.04.07      或      https://www.gtzyyg.com/CN/Y2014/V26/I4/41

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