Methods Inf Med 2004; 43(04): 327-330
DOI: 10.1055/s-0038-1633887
Original Article
Schattauer GmbH

Intensity-based Image Registration with a Guaranteed One-to-one Point Match

B. Fischer
1   Institute of Mathematics, University of Lübeck, Lübeck, Germany
,
J. Modersitzki
1   Institute of Mathematics, University of Lübeck, Lübeck, Germany
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Publikationsverlauf

Publikationsdatum:
05. Februar 2018 (online)

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Summary

Objectives: In this paper, we propose a novel registration technique, which combines the concepts of landmark and automatic, non-rigid intensity-based approaches. A general framework, which might be used for many different registration problems is presented. The novel approach enables the incorporation of different distance measures as well as different smoothers.

Methods: The proposed scheme minimizes a regular-ized distance measure subject to some interpolation constraints. The desired deformation is computed iteratively using an Euler-scheme for the first variation of the chosen objective functional.

Results: A fast and robust numerical scheme for the computation of the wanted minimizer is developed, implemented, and applied to various registration tasks. This includes the registration of pre- and post-intervention images of the human eye.

Conclusions: A novel framework for a parameter-free, non-rigid registration scheme which allows for the additional incorporation of user-defined landmarks is proposed. It enhances the reliability of conventional approaches considerably and thereby their acceptability by practitioners in a clinical environment.