非采样Contourlet域内的区域对比度图像融合  

mage fusion based on region contrast in nonsubsampled Contourlet transform domain

作　　者：王乐山[1] 李华锋[2] 阿主拉且[1] 

机构地区：[1]中国人民解放军63800部队 [2]重庆大学数理学院

出　　处：《计算机工程与应用》2010年第35期185-187,208,共4页Computer Engineering and Applications

基　　金：国家自然科学基金(No.69674012);重庆市科技攻关计划(No.CSTC2009AC3037)~~

摘　　要：针对传统的基于小波对比度图像融合方法的不足,结合非采样Contourlet变换的优点提出了一种新的基于非采样Con-tourlet变换的区域对比度图像融合方法。该方法对图像经非采样Contourlet变换后得到的低频分量采用基于区域能量的自适应加权融合;高频分量结合人眼的视觉特性,提出了一种新的基于区域对比度的加权与选择相结合的融合方法。通过非采样Con-tourlet变换的逆变换得到融合图像。实验结果表明,该融合方法较传统的方法具有更强的获取细节信息的能力,其融合效果优于传统的图像融合算法。In order to overcome the drawbacks of traditional contrast image fusion based on wavelet methods and combined the advantages of Nonsubsampled Contourlet Transform,a novel image fusion algorithm is proposed in this paper.Firstlyt,his algorithm decomposes original images by nonsubsampled contourlet transform,and then the low-frequency coefficients are fused by local area energy while for the high-frequency coefficientt,he combination of weighting and selection based on the local contrast ratio matching is developed,which is also consistent with the characteristics of the human vision system.Final-lyt,he fused image is obtained by performing the inverse nonsubsampled contourlet transform on the combined coefficients.The experimental results show that the proposed image fusion algorithm can more effectively descript the grey discontinuous information,and the fused image contains more abundant detail feature compared with traditional algorithms.

关 键 词：图像融合 非采样CONTOURLET变换 区域能量 区域对比度 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]