滤波器组合对医学图像融合效果的影响  

Effect of Filters Combined on Medical Image Fusion

作　　者：唐慧[1] 胡俊峰[1] 唐鹤云[1] 

机构地区：[1]徐州医学院医学影像学院,江苏徐州221006

出　　处：《北京生物医学工程》2010年第5期453-456,共4页Beijing Biomedical Engineering

基　　金：江苏省高校科技成果转化项目(JHZD09-22);徐州市科技计划项目(XM09B070)资助

摘　　要：滤波器的不同组合影响医学图像融合性能,恰当地进行滤波器组合是医学图像融合技术的前提。本文通过优化滤波器组合对无下采样Contourlet变换(nonsubsampled contourlet transform,NSCT)医学图像融合影响进行深入讨论,比较了不同滤波器组合后的融合结果。结果显示滤波器组合对融合性能有较大影响,lax滤波器组合图像融合效果各项指标分别优于db3滤波器组合。实验结果证明,使用合适的滤波器组合,即使在融合准则很简单、分解层数较少的情况下,同样可以获得很好的融合结果,从而大大减少融合算法的复杂度。The filters combined influence the qualities of medical image fusion. It is important premise to select filters correctly for Medical Image Fusion Technology. Effects of the nonsubsampled contourlet transform（NSCT） on image fusion were analyzed and fusion results using different filters were discussed in depth. The results confirmed that the filters combined significantly impacted on the qualities of fusion, and the indicators of lax combined filter were better than db3 combined filter. Experimental results showed that choosing appropriate filters combined could achieve a satisfying fusion, even with an easier fusion rule and less decomposing levels, which could reduce the fusion algorithms complexity.

关 键 词：医学图像融合 非下采样CONTOURLET变换 滤波器组合 效果评价 性能对比 

分 类 号：R318.04[医药卫生—生物医学工程]