Diffeomorphic registration using geodesic shooting and Gauss-Newton optimisation.

Diffeomorphic registration using geodesic shooting and Gauss-Newton optimisation.
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DOI:
10.1016/j.neuroimage.2010.12.049
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发表时间:
2011-04-01
期刊:
影响因子:
5.7
通讯作者:
Friston KJ
Friston KJ
中科院分区:
医学1区
文献类型:
--
作者:
Ashburner J;Friston KJ

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本文提出了一种基于大变形微分对称度量映射(LDDMM)设置的非线性图像配准算法,但具有更有效的优化方案-无论是在内存需求方面还是在达到收敛所需的迭代次数方面。该算法不是对一系列速度场进行变分优化,而是使用测地线射击程序,因此只估计初始速度。采用高斯-牛顿优化策略实现更快的收敛。使用免费的人工标记数据集对该算法进行了评估,并发现与使用相同数据评估的其他主题间配准算法进行了比较。
This paper presents a nonlinear image registration algorithm based on the setting of Large Deformation Diffeomorphic Metric Mapping (LDDMM), but with a more efficient optimisation scheme — both in terms of memory required and the number of iterations required to reach convergence. Rather than perform a variational optimisation on a series of velocity fields, the algorithm is formulated to use a geodesic shooting procedure, so that only an initial velocity is estimated. A Gauss–Newton optimisation strategy is used to achieve faster convergence. The algorithm was evaluated using freely available manually labelled datasets, and found to compare favourably with other inter-subject registration algorithms evaluated using the same data.
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