Computational cost of nonrigid registration algorithms based on fluid dynamics [MRI time series application]

Though fluid dynamics offer a good approach to nonrigid registration and give accurate results, even with large-scale deformations, its application is still very time consuming. We introduce and discuss different approaches to solve the core problem of nonrigid registration, the partial differential...

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Bibliographic Details
Published in:IEEE transactions on medical imaging 2002-08, Vol.21 (8), p.946-952
Main Authors: Wollny, G., Kruggel, F.
Format: Article
Language:English
Subjects:
Biomedical imaging
Costs
Elasticity
Fluid dynamics
Heuristic algorithms
Image registration
Large-scale systems
Magnetic resonance
Neuroscience
Partial differential equations
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Summary:Though fluid dynamics offer a good approach to nonrigid registration and give accurate results, even with large-scale deformations, its application is still very time consuming. We introduce and discuss different approaches to solve the core problem of nonrigid registration, the partial differential equation of fluid dynamics. We focus on the solvers, their computational costs and the accuracy of registration. Numerical experiments show that relaxation is currently the best approach, especially when reducing the cost/iteration by focusing the updates on deformation spots.
ISSN:0278-0062
1558-254X
DOI:10.1109/TMI.2002.803113