# Vertex Climax: Converting Geometry into a Non-nanifold Midsurface

### Christoph Schinko, Christoph Schinko, Torsten Ullrich, Torsten Ullrich

#### Abstract

The physical simulation of CAD models is usually performed using the finite elements method (FEM). If the input CAD model has one dimension that is significantly smaller than its other dimensions, it is possible to perform the physical simulation using thin shells only. While thin shells offer an enormous speed-up in any simulation, the conversion of an arbitrary CAD model into a thin shell representation is extremely difficult due to its non-uniqueness and its dependence on the simulation method used afterwards. The current state-of-the-art algorithms in conversion voxelize the input geometry and remove voxels based on matched, predefined local neighborhood configurations until only one layer of voxels remains. In this article we discuss a new approach that can extract a midsurface of a thin solid using a kernel-based approach: In contrast to other voxel-based thinning approaches, our algorithm applies a kernel onto a binary grid. In the resulting density field, opposing surface-voxels are iteratively moved towards each other until a thin representation is obtained.

Download#### Paper Citation

#### in Harvard Style

Schinko C. and Ullrich T. (2021). **Vertex Climax: Converting Geometry into a Non-nanifold Midsurface**.In *Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 1: GRAPP,* ISBN 978-989-758-488-6, pages 185-192. DOI: 10.5220/0010210401850192

#### in Bibtex Style

@conference{grapp21,

author={Christoph Schinko and Torsten Ullrich},

title={Vertex Climax: Converting Geometry into a Non-nanifold Midsurface},

booktitle={Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 1: GRAPP,},

year={2021},

pages={185-192},

publisher={SciTePress},

organization={INSTICC},

doi={10.5220/0010210401850192},

isbn={978-989-758-488-6},

}

#### in EndNote Style

TY - CONF

JO - Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 1: GRAPP,

TI - Vertex Climax: Converting Geometry into a Non-nanifold Midsurface

SN - 978-989-758-488-6

AU - Schinko C.

AU - Ullrich T.

PY - 2021

SP - 185

EP - 192

DO - 10.5220/0010210401850192