EUROVIS 2005: Eurographics / IEEE VGTC Symposium on Visualization
2005
pp. 199-206

Non-manifold Mesh Extraction from Time-varying Segmented Volumes used for Modeling a Human Heart

Martin Bertram, Gerd Reis, Rolf H. van Lengen, Sascha Köhn, and Hans Hagen

DOI: 10.2312/VisSym/EuroVis05/199-206

We present a new algorithm extracting and fairing surfaces from segmented volumes composed of multiple materials. In a first pass, the material boundaries in the volume are smoothed considering signed distance functions for the individual materials. Second, we apply a marching-cubes-like contouring method providing initial meshes defining material boundaries. Non-manifold features emerge along lines where more than two materials encounter. Finally, the mesh geometry is relaxed in a constrained fairing process. We use our algorithm to construct a heart model from segmented time-varying magnetic resonance images. Information concerning the heart ontology is used to merge certain structures to functional units.

Categories and Subject Descriptors (according to ACM CCS):G.1.2 [Numerical Analysis]: Approximation of surfaces and contours I.3.5 [Computer Graphics]: Curve, surface, solid, and object representations

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