Improving deformable surface meshes through omni-directional displacements and MRFs.

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Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. 2010;13(Pt 1):227-34

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Improving deformable surface meshes through omni-directional displacements and MRFs. Kainmueller Lab

Kainmueller D, Lamecker H, Seim H, Zachow S, Hege HC

Note: Research in this publication was not performed at Janelia.

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Abstract

Deformable surface models are often represented as triangular meshes in image segmentation applications. For a fast and easily regularized deformation onto the target object boundary, the vertices of the mesh are commonly moved along line segments (typically surface normals). However, in case of high mesh curvature, these lines may intersect with the target boundary at "non-corresponding" positions, or even not at all. Consequently, certain deformations cannot be achieved. We propose an approach that allows each vertex to move not only along a line segment, but within a surrounding sphere. We achieve globally regularized deformations via Markov Random Field optimization. We demonstrate the potential of our approach with experiments on synthetic data, as well as an evaluation on 2 x 106 coronoid processes of the mandible in Cone-Beam CTs, and 56 coccyxes (tailbones) in low-resolution CTs.

PMID: 20879235 [PubMed - indexed for MEDLINE]

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Improving deformable surface meshes through omni-directional displacements and MRFs.

Note: Research in this publication was not performed at Janelia.

Abstract

PMID: 20879235 [PubMed - indexed for MEDLINE]

Janelia Authors