Color multi-focus image fusion method based on dual-tree complex wavelet transform

Computer Engineering and Applications ›› 2007, Vol. 43 ›› Issue (28): 12-14.

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Color multi-focus image fusion method based on dual-tree complex wavelet transform

WANG Ya-jie^1,2,LI Dian-qi^1,3,XU Xin-he¹

1.School of Information Science & Engineering,Northeastern University,Shenyang 110004,China
2.Engineering Practice Center,Shenyang Institute of Aeronautic Engineering,Shenyang 110136,China
3.School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110023,China

Received:1900-01-01 Revised:1900-01-01 Online:2007-10-01 Published:2007-10-01
Contact: WANG Ya-jie

基于双树复小波变换彩色多聚焦图像融合方法

王亚杰^1,2,李殿起^1,3,徐心和¹

1.东北大学信息科学与工程学院,沈阳 110004
2.沈阳航空工业学院工程实践中心,沈阳 110136
3.沈阳工业大学机械学院,沈阳 110023

通讯作者: 王亚杰

Abstract

Abstract: The dual-tree complex wavelet transform is introduced in color multi-focus image fusion,aiming at the deficiencies of existing discrete wavelet transform based algorithms in characteristics representation.Three channels of the source color images are fused respectively by multi-measurement fusion scheme.The local definition is applied in low frequency bands,and the local standard deviation is applied in high frequency bands,after the wavelet transform of every channel of source images.Besides the traditional performance evaluating methods of entropy and cross entropy,the universal measures which combine objective and subjective factors are also used.The experimental results show that the fused image obtained by proposed method has good effect,and the proposed method is superior to the discrete wavelet transform fusion based algorithms.

Key words: dual-tree complex wavelet transform, multi-focus image, color image, image fusion

摘要： 针对离散小波变换图像融合算法在特征表达上存在的不足,将双树复数小波变换引入到彩色多聚焦图像融合中。对彩色图像的三个通道分别进行融合处理,并采用基于多测度的融合策略：各通道小波变换后低频子带采用区域清晰度的方法;高频子带采用区域标准差的方法。融合效果评价除使用传统方法的熵、交叉熵外,还使用了通用的主观与客观相结合的方法。通过对实验结果的主客观性能分析,验证了该方法得到的融合图像效果较好,优于离散小波变换融合算法。

关键词: 双树复小波变换, 多聚焦图像, 彩色图像, 图像融合

WANG Ya-jie^1,2,LI Dian-qi^1,3,XU Xin-he¹. Color multi-focus image fusion method based on dual-tree complex wavelet transform[J]. Computer Engineering and Applications, 2007, 43(28): 12-14.

王亚杰^1,2,李殿起^1,3,徐心和¹. 基于双树复小波变换彩色多聚焦图像融合方法[J]. 计算机工程与应用, 2007, 43(28): 12-14.

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Color multi-focus image fusion method based on dual-tree complex wavelet transform

基于双树复小波变换彩色多聚焦图像融合方法

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