基于采样二通道不可分小波的多光谱图像融合

doi:10.3969/j.issn.0372-2112.2013.04.014

电子学报 ›› 2013, Vol. 41 ›› Issue (4): 710-716.DOI: 10.3969/j.issn.0372-2112.2013.04.014

基于采样二通道不可分小波的多光谱图像融合

刘斌¹, 祝青¹, 胡福强¹, 刘维杰²

1. 湖北大学数学与计算机科学学院,湖北武汉 430062;
2. 武汉大学计算机学院,湖北武汉 430072

收稿日期:2012-06-20 修回日期:2012-12-03 出版日期:2013-04-25
- 作者简介:
- 刘斌 男,1963年生于湖北红安,教授、博士生导师.2006年在华中科技大学图像所获模式识别与智能系统专业博士学位.主要从事图像融合、小波理论与应用、模式识别等的教学和研究工作. E-mail:liubin3318@163.com 祝青 女,1987年生于武汉,2008年于湖北警官学院获得学士学位.湖北大学数学与计算机科学学院硕士研究生.主要研究方向为图像处理与模式识别. E-mail:z_q_8758@sina.com
- 基金资助:
- 国家自然科学基金 (No.61072126); 湖北省自然科学重点基金 (No.2012FFA053)

Multi-Spectral Image Fusion Method Based on Sampled Two Channel Non-Separable Wavelets

LIU Bin¹, ZHU Qing¹, HU Fu-qiang¹, LIU Wei-jie²

1. School of Mathematics and Computer Science, Hubei University, Wuhan, Hubei 430062, China;
2. Computer School, Wuhan University, Wuhan, Hubei 430072, China

Received:2012-06-20 Revised:2012-12-03 Online:2013-04-25 Published:2013-04-25
- Supported by:
- National Natural Science Foundation of China (No.61072126); Natural Science Foundation of Hubei Province (Key fund) (No.2012FFA053)

摘要/Abstract

摘要： 针对基于非下采样不可分小波图像融合方法空间分辨率不高、基于张量积小波融合方法会出现方块效应的不足,提出了一种基于伸缩矩阵为[1,1;1,-1]的二通道采样不可分小波的多光谱图像和全色图像融合方法.利用矩阵扩充方法,构造了一组新的不可分低通滤波器和高通滤波器组,利用所设计滤波器组分别对多光谱图像的亮度分量和全色图像作下采样的多尺度不可分小波分解,分别对分解后的低频子图像和高频子图像按不同的融合规则进行融合.实验结果表明,其保持光谱信息的能力和保持空间分辨率信息的能力比基于IHS变换融合方法、基于DWT的融合方法、基于IHS-DWT的融合方法、基于IHS-Contourlet变换的融合方法、基于IHS-Curvelet变换的融合方法、SRF方法都强,与基于非下采样的二通道不可分正交小波和不可分双正交小波融合方法相比,该方法能保持较好的整体光谱信息和较高的空间分辨率信息.

关键词: 图像融合, 二通道抽样不可分小波, 多光谱图像, 全色图像

Abstract: In order to solve the problems that the image fusion method based on separable discrete wavelet transform has block effect in the fused image and the spatial resolution is lower in the fusion result image of nonsubsampled non-separable wavelet transform,a new multispectral image fusion method based on sampled two channel non-separable wavelets is proposed.The filter banks relating to this kind ofwavelet are constructed.The multi-resolution decompositions of the intensity of the multispectral image and panchromatic image are performed in sampled mode using the constructed filter bank.The low frequency and high frequency coefficients are fused by different fusion rules.The experiment results show that this method has good visual effect.The fusion performance outperforms the IHS fusion method,the fusion method based on DWT,IHS-DWT,IHS-Contourlet transform,IHS-Curvelet transform and SRF in preserving spectral quality and high spatial resolution information.When compared with the fusion method based on nonsubsampled two-channel non-separable wavelet,the proposed method has been observed to have higher spatial resolution and good global spectral information.

Key words: image fusion, two-channel sampled non-separable wavelets, multispectral image, panchromatic image

中图分类号:

TP391.4

刘斌, 祝青, 胡福强, 等. 基于采样二通道不可分小波的多光谱图像融合[J]. 电子学报, 2013, 41(4): 710-716.

LIU Bin, ZHU Qing, HU Fu-qiang, et al. Multi-Spectral Image Fusion Method Based on Sampled Two Channel Non-Separable Wavelets[J]. Acta Electronica Sinica, 2013, 41(4): 710-716.

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基于采样二通道不可分小波的多光谱图像融合

Multi-Spectral Image Fusion Method Based on Sampled Two Channel Non-Separable Wavelets

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