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A fully parallel algorithm for multimodal image registration using normalized gradient fields

, , , , , , и .
Biomedical Imaging (ISBI), 2013 IEEE 10th International Symposium on, стр. 572-575. (апреля 2013)
DOI: 10.1109/ISBI.2013.6556539

Аннотация

We present a super fast variational algorithm for the challenging problem of multimodal image registration. It is capable of registering full-body CT and PET images in about a second on a standard CPU with virtually no memory requirements. The algorithm is founded on a Gauss-Newton optimization scheme with specifically tailored, mathematically optimized computations for objective function and derivatives. It is fully parallelized and perfectly scalable, thus directly suitable for usage in many-core environments. The accuracy of our method was tested on 21 PET-CT scan pairs from clinical routine. The method was able to correct random distortions in the range from -10 cm to 10 cm translation and from -15° to 15° degree rotation to subvoxel accuracy. In addition, it exhibits excellent robustness to noise.

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