Stable structural deformations

Abstract

Recently, we introduced a hierarchical finite element model in the context of structural image segmentation. Such model deforms from its equilibrium shape into similar shapes under the influence of both, image-based forces and structural forces, which serve the propagation of deformations across the hierarchy levels. Such forces are very likely to result in large (rotational) deformations, which yield under the linear elasticity model artefacts and thus poor segmentation results. In this paper, we provide results indicating that different implementations of the stiffness warping method can be successfully combined to simulate dependent rotational deformations correctly, and in an efficient manner. © 2009 Springer-Verlag Berlin Heidelberg.