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《Journal of Xiamen University(Natural Science)》 2009-06
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Multi-focus Image Fusion Algorithm Based on Nonsubsampled Contourlet Transform

ZOU Rong,LI Ling-ling,LI Cui-hua(School of Information Science and Technology,Xiamen University,Xiamen 361005,China)  
Nonsubsampled contourlet transform(NSCT) is an improvement based on contourlet transform.It is a flexible multistage,multidirectional and shift invariant.In this paper,an image fusion method based on NSCT is proposed.Firstly images are decomposed by NSCT.Then a low frequency fusion rule based on the improved weighted average is used to fuse the low frequency bands,while the fusion rule with maximum absolute value coefficient and based on the improved regional variance is used to fuse the high frequency bands.Finally,the fused coefficients are reconstructed to obtain fusion results.The experimental results are given,and compared with those of the common fusion methods and some references′ fusion methods.The experiments show that the approach proposed in this paper can achieve better results than other methods.
【Fund】: 国家重点基础研究发展计划(2007CB311005);; 河南省基础与前沿技术研究计划(092300410043);; 河南省高等学校青年骨干教师资助计划;; 河南省教育厅自然科学基础研究计划(2007510023);; 福建省自然科学基金计划资助(A0710020);; 厦门大学985二期信息创新平台资助
【CateGory Index】: TP391.41
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