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国土资源遥感  2015, Vol. 27 Issue (2): 44-50    DOI: 10.6046/gtzyyg.2015.02.07
  技术方法 本期目录 | 过刊浏览 | 高级检索 |
基于Contourlet变换的遥感图像融合方法研究
李文静1, 温文鹏2, 王清和1
1. 江西省煤炭工业科学研究所, 南昌 330029;
2. 苏州科环环保科技有限公司, 苏州 215301
A study of remote sensing image fusion method based on Contourlet transform
LI Wenjing1, WEN Wenpeng2, WANG Qinghe1
1. Jiangxi Institute of Coal Industry and Science, Nanchang 330029, China;
2. Suzhou Kehuan Entironmental Protection Co., Ltd, Suzhou 215301, China
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摘要 

为了充分利用多源遥感图像的影像信息,针对不同分辨率的遥感图像进行融合算法研究。通过对基于小波变换(warelet transform,WT)与IHS变换的改进算法研究,提出了基于轮廓波变换(Contourlet transform,CT)与IHS变换的改进算法: 结合传统IHS彩色空间变换,将经IHS变换获得的多光谱图像亮度分量与原全色图像分别进行CT; 然后对得到的低频分量采用自适应融合规则、高频分量采用基于区域相似度的阈值控制规则分别进行融合; 最后对融合后的高频和低频分量进行Contourlet逆变换,得到最终的融合图像。对比实验结果表明: 本文提出的方法能够在有效保留光谱信息的同时,纳入全色图像丰富的空间细节信息。融合之后的结果图像与原多光谱图像具有更高的相关系数和更小的光谱畸变度,并且信息熵和标准差较传统WT及CT更优,具有一定的实用性。

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万杰
廖静娟
许涛
沈国状
关键词 航天飞机雷达测图计划(SRTM)ICESat/GLAS双线性插值坡度坡向    
Abstract

In this paper, an improved method for multi-spectral and panchromatic remote sensing image fusion was proposed. The method proposed was inspired by the traditional wavelet and IHS based fusion framework. The Contourlet transformation was utilized and a novel fusion strategy was presented, with the purpose of extracting the luminance component of the multispectral image and conducting the Contourlet transformation on the luminance component and the panchromatic images. The fusion strategy for the low-frequency component is to adjust adaptively, while the high-frequency is threshold-controlled based on the structure similarity. Extensive experiments show that the method proposed in this paper can effectively extract the spatial information from the panchromatic image, which is not present in the multi-spectral image. The quantitative evaluation results also suggest that the resultant image has a higher correlation coefficient with the original image and smaller spectral distortion degrees in comparison with images of the conventional methods. In addition, the information entropy and the standard deviations are also superior. Besides, the proposed method is to a certain extent practical.

Key wordsshuttle Radar topography mission (SRTM)    ICESat/GLAS    bilinear interpolation algorithm    slope    aspect
收稿日期: 2014-03-25      出版日期: 2015-03-02
:  TP751.1  
作者简介: 李文静(1985-),女,学士,主要从事高光谱图像融合方面的研究。Email:wwjingli@gmail.com。
引用本文:   
李文静, 温文鹏, 王清和. 基于Contourlet变换的遥感图像融合方法研究[J]. 国土资源遥感, 2015, 27(2): 44-50.
LI Wenjing, WEN Wenpeng, WANG Qinghe. A study of remote sensing image fusion method based on Contourlet transform. REMOTE SENSING FOR LAND & RESOURCES, 2015, 27(2): 44-50.
链接本文:  
https://www.gtzyyg.com/CN/10.6046/gtzyyg.2015.02.07      或      https://www.gtzyyg.com/CN/Y2015/V27/I2/44

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