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Simplification and repair of polygonal models using volumetric techniques

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2 Author(s)
Nooruddin, F.S. ; Coll. of Comput., Georgia Inst. of Technol., Atlanta, GA, USA ; Turk, G.

Two important tools for manipulating polygonal models are simplification and repair and we present voxel-based methods for performing both of these tasks. We describe a method for converting polygonal models to a volumetric representation in a way that handles models with holes, double walls, and intersecting parts. This allows us to perform polygon model repair simply by converting a model to and from the volumetric domain. We also describe a new topology-altering simplification method that is based on 3D morphological operators. Visually unimportant features such as tubes and holes may be eliminated from a model by the open and close morphological operators. Our simplification approach accepts polygonal models as input, scan converts these to create a volumetric description, performs topology modification, and then converts the results back to polygons. We then apply a topology-preserving polygon simplification technique to produce a final model. Our simplification method produces results that are everywhere manifold.

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Visualization and Computer Graphics, IEEE Transactions on  (Volume:9 ,  Issue: 2 )