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A Multi-Resolution Medical Image Fusion Method Based on Nonparametric Orthogonal Polynomials
Author(s): 
Pages: 300-304
Year: Issue:  2
Journal: Pattern Recognition and Artificial Intelligence

Keyword:  估计理论 正交多项式 多分辨率 非参数期望最大法(NEM) 图像融合;
Abstract: 基于估计理论的图像融合方法都是假设图像偏移或噪声服从高斯混合分布,容易造成模型不匹配和丢失局部细节等问题.文中提出一种基于小波的多分辨率的非参数正交多项式医学图像融合方法.首先,对图像进行多分辨率分解.对低频部分,根据图像信息模型和非参数正交多项式混合模型,采用非参数期望最大法估计模型参数,获得低频融合结果.对高频部分,采用系数绝对值选大法进行融合.然后,将高频和低频部分结果进行反变换,得到最终融合图像.实验结果表明,该方法融合质量优于其它方法,融合时间大为缩短.
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