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Efficient algorithms for boundary extraction of 2D and 3D orthogonal pseudomanifolds

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Vigo Anglada, MarcMés informacióMés informacióMés informació
Pla García, NúriaMés informacióMés informacióMés informació
Ayala Vallespí, M. DolorsMés informacióMés informacióMés informació
Martínez Bayona, Jonàs
Document typeResearch report
Defense date2011
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
In this paper we present algorithms to extract the boundary representation of orthogonal polygons and polyhedra, either manifold or pseudomanifold. The algorithms we develop reconstruct not only the polygons of the boundaries but also the hole-face inclusion relationship. Our algorithms have a simple input in order that they can be used to convert many different kinds of models to B-Rep. For the 2D case, the input is the set of vertices, and for the 3D case, some small additional information must be supplied for every vertex. All proposed algorithms run in $mathcal{O}(nlog n)$ time and use $mathcal{O}(n)$ space, where $n$ is the number of vertices of the input. Besides, we explain how to use our proposal to extract the boundary from the well-known voxel and octree models and from other models found in the related literature: the neighbourhood, the EVM, and the weighted vertex list models.
CitationVigo, M., Pla, N., Ayala, D., Martínez, J. "Efficient algorithms for boundary extraction of 2D and 3D orthogonal pseudomanifolds". 2011. 
Is part ofLSI-11-10-R
URIhttp://hdl.handle.net/2117/91263
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  • GIE - Grup d'Informàtica en l'Enginyeria - Reports de recerca [82]
  • Departament de Ciències de la Computació - Reports de recerca [1.106]
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