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Centroidal Voronoi tessellation in universal covering space of manifold surfaces

Centroidal Voronoi tessellation in universal covering space of manifold surfaces,10.1016/j.cagd.2011.06.005,Computer Aided Geometric Design,Guodong Ro

Centroidal Voronoi tessellation in universal covering space of manifold surfaces  
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The centroidal Voronoi tessellation (CVT) has found versatile applications in geometric modeling, computer graphics, and visualization, etc. In this paper, we first extend the concept of CVT from Euclidean space to spherical space and hyperbolic space, and then combine all of them into a unified framework – the CVT in universal covering space. The novel spherical and hyperbolic CVT energy functions are defined, and the relationship between minimizing the energy and the CVT is proved. We also show by our experimental results that both spherical and hyperbolic CVTs have the similar property as their Euclidean counterpart where the sites are uniformly distributed with respect to given density values. As an example of the application, we utilize the CVT in universal covering space to compute uniform partitions and high-quality remeshing results for genus-0, genus-1, and high-genus (genus>1) surfaces.
Journal: Computer Aided Geometric Design - CAGD , vol. 28, no. 8, pp. 475-496, 2011
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