Variational image registration by a total fractional-order variation model

Variational image registration by a total fractional-order variation model
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通过全分数阶变分模型进行变分图像配准

DOI:
10.1016/j.jcp.2015.02.021
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发表时间:
2015-07
影响因子:
4.1
通讯作者:
Chen, Ke
Chen, Ke
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhang, Jianping;Chen, Ke

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本文提出了非刚性图像配准中非局部变形的新框架。众所周知,如果参考图像和模板图像之间的差异太大,许多非刚性图像配准技术可能会导致不稳定变形(例如,不是一对一)。我们提出了一种新颖的总分数阶变分框架,以推导基础分数欧拉-拉格朗日方程,并结合半隐式更新和共轭梯度(CG)解决方案来求解非线性系统的数值实现。数值实验表明,新的配准不仅产生准确和平滑的解决方案,而且还允许进行大的刚性对准,新模型的评估表明,与传统的图像配准方法相比,在准确性和鲁棒性方面有了显着的改进。
In this paper, a new framework of nonlocal deformation in non-rigid image registration is presented. It is well known that many non-rigid image registration techniques may lead to unsteady deformation (e.g. not one to one) if the dissimilarity between the reference and template images is too large. We present a novel variational framework of the total fractional-order variation to derive the underlying fractional Euler–Lagrange equations and a numerical implementation combining the semi-implicit update and conjugate gradients (CG) solution to solve the nonlinear systems. Numerical experiments show that the new registration not only produces accurate and smooth solutions but also allows for a large rigid alignment, the evaluations of the new model demonstrate substantial improvements in accuracy and robustness over the conventional image registration approaches.
DOI: 10.1109/icip.2013.6738154
发表时间: 2013
期刊: 2013 IEEE International Conference on Image Processing
影响因子: --
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