Publikation

A probabilistic approach for the registration of images with missing correspondences

Julia Krüger, Jan Ehrhardt, Sandra Schultz, Heinz Handels

In: Elsa D. Angelini , Bennett A. Landman (Hrsg.). Medical Imaging 2019: Image Processing. SPIE Medical Imaging February 16-21 San Diego California United States Seiten 550-557 10949 SPIE 2019.

Abstrakt

The registration of two medical images is usually based on the assumption that corresponding regions exist in both images. If this assumption is violated by e. g. pathologies, most approaches encounter problems. The here proposed registration method is based on the use of probabilistic correspondences between sparse image representations, leading to a robust handling of potentially missing correspondences. A maximum-a-posteriori framework is used to derive the optimization criterion with respect to deformation parameters that aim to compensate not only spatial differences between the images but also appearance differences. A multi-resolution scheme speeds-up the optimization and increases the robustness. The approach is compared to a state-of-theart intensity-based variational registration method using MR brain images. The comprehensive quantitative evaluation using images with simulated stroke lesions shows a significantly higher accuracy and robustness of the proposed approach.

Deutsches Forschungszentrum für Künstliche Intelligenz
German Research Center for Artificial Intelligence