A Combination of the Total Variation Filter and a Fourth-Order Filter for Image Registration

A Combination of the Total Variation Filter and a Fourth-Order Filter for Image Registration
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用于图像配准的全变分滤波器和四阶滤波器的组合

DOI:
10.1155/2015/235314
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发表时间:
2015-05
影响因子:
--
通讯作者:
沈纯理
沈纯理
中科院分区:
工程技术4区
文献类型:
--
作者:
杨晓梅;沈朝民;李芳;沈纯理

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提出了一种结合全变差滤波和四阶滤波的非刚体图像配准新方法。我们将变形场分解为两个分量,即分段常量分量和光滑分量。第一个分量采用全变差滤波,第二个分量采用四阶滤波。然后,我们提出了一种新的基于偏微分方程的图像配准模型,既适用于平滑变形问题,也适用于非光滑变形问题。同时,为了提高图像匹配的准确性和稳健性,我们的方法使用了局部-全局相似性度量。应用分裂Bregman算法和DUAL算法,给出了一种快速稳定的数值格式。通过对合成图像和真实图像的数值实验和比较,证明了该方法在非刚体图像配准中的有效性。
We introduce a novel method for nonrigid image registration which combines the total variation filter and a fourth-order filter. We decompose the deformation field into two components, that is, a piecewise constant component and a smooth component. The total variation filter is used for the first component and the fourth-order filter is used for the second one. Then, we present a new PDE-based image registration model suitable for both smooth and nonsmooth deformation problem. Meanwhile, the local-global similarity measure is used in our method to improve the accuracy and robustness for image matching. By applying the split Bregman algorithm and dual algorithm, we present a fast and stable numerical scheme. The numerical experiments and comparisons on both synthetic images and real images demonstrate the effectiveness of our method in nonrigid image registration.
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