| 基于高斯混合模型的NSCT变换遥感图像融合 |
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| 引用本文： | 王杰雄,齐向阳.基于高斯混合模型的NSCT变换遥感图像融合[J].科学技术与工程,2009,9(14). |
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| 作者姓名： | 王杰雄 齐向阳 |
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| 作者单位： | 1. 中国科学院电子学研究所,北京,100190<<中国科学院研究生院,北京,100049
2. 中国科学院电子学研究所,北京,100190 |
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| 摘 要： | 遥感图像中的能量信息反映了地物的电磁散射特性,具有重要的物理意义。而基于边缘特征的方法不能有效地保留能量信息的结构。对基于边缘的算法进行了改进,综合考虑了边缘和能量结构。采用非下采样Contourlet变换(NSCT)对图像进行分解和综合。利用高斯混合模型将低频系数划分为边缘和平滑两部分,对两区域分别采用基于边缘能量和局部能量的融合规则。高频子带使用重要性测度法进行融合。实验结果表明该算法融合效果较基于边缘算法有所改善,是一种有效兼顾细节和能量结构的方法。
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| 关 键 词： | 图像融合 非下采样contourlet变换 高斯混合模型 边缘能量 重要性测度 |
Gaussian Mixed Model Based NSCT Remote Sensing Image Fusion |
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| WANG Jie-xiong,QI Xiang-yang.Gaussian Mixed Model Based NSCT Remote Sensing Image Fusion[J].Science Technology and Engineering,2009,9(14). |
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| Authors: | WANG Jie-xiong QI Xiang-yang |
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| Institution: | Institute of Electronics;Chinese Academy of Sciences1;Beijing 100190;P.R.China;Graduate University of the Chinese Academy of Sciences2;Beijing 100049;P.R.China |
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| Abstract: | Edge-based image fusion algorithm can not preserve energy structure which is important in indicating the reflection feature of the observed objects.An enhanced algorithm is proposed considering both edge and energy structure.Nonsubsampled contourlet transform is deployed to analyze and synthesize input images in both multi-scale and multi-direction sub-bands.Low frequency band is divided into contour and smooth regions by Gaussian Mixed Model.Edge energy and local energy is selected as judgments respectivel... |
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| Keywords: | Image fusion Nonsubsampled contourlet transform Gaussian Mixed Model edge energy salience measure |
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