Title
Generalized Swap Operation for Tetrahedrizations
Abstract
Mesh optimization of 2D and 3D triangulations is used in multiple applications extensively. For example, mesh optimization is cru- cial in the context of adaptively discretizing geometry, typically repre- senting the geometrical boundary conditions of a numerical simulation, or adaptively discretizing the entire space over which various dependent variables of a numerical simulation must be approximated. Together with operations applied to the vertices the so-called edge or face swap oper- ations are the building block of all optimization approaches. To speed up the optimization or to avoid local minima of the function measur- ing overall mesh quality these swaps are combined to generalized swap operations with a less local impact on the triangulation. Despite the fact that these swap operations change only the connectiv- ity of a triangulation, it depends on the geometry of the triangulation whether the generalized swap will generate inconsistently oriented or de- generate simplices. Because these are undesirable for numerical reasons, this paper is concerned with geometric criteria that guarantee the gen- eralized swaps for a 3D triangulation to yield only valid, non-degenerate triangulations.
Year
DOI
Venue
2010
10.4230/DFU.SciViz.2010.30
Scientific Visualization: Advanced Concepts
Keywords
Field
DocType
swap operations.,geometric conditions,3d triangulation
Discretization,Mathematical optimization,Computer simulation,Computational geometry,Object model,Maxima and minima,Triangulation (social science),Swap (finance),Mathematics,Speedup
Conference
Citations 
PageRank 
References 
0
0.34
18
Authors
3
Name
Order
Citations
PageRank
Burkhard Lehner1182.37
Bernd Hamann22283206.78
Georg Umlauf313416.86