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TitleSimplification of Closed Triangulated Surfaces (In Proceedings)
inProceedings of 2000 UC Davis Student Workshop on Computing, TR CSE-2000-9
Author(s) Peer Timo Bremer, Oliver Kreylos, Bernd Hamann, F.-E. Wolter
Editor(s) M.L. Haungs
Year 2000
PublisherUniversity of California, Davis
AddressDavis, California
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Abstract . We describe a method to approximate a closed surface triangulation using simulated annealing. Our approach guarantees that all vertices and triangles in an approximating surface triangulation are within a user-defined distance of the original surface triangulation. We introduce the idea of atomic envelopes to guarantee error bounds that are independent of the surface geometry. Atomic envelopes also allow approximation distance to be different for different parts of the surface. We start with the original triangulation and perturb it randomly and improve an approximating triangulation by locally changing the triangulation, using a simulated annealing algorithm. Our algorithm is not restricted to using only original vertices; the algorithm considers every point inside the envelope triangulation as a possible position. The algorithm attempts to minimize the total number of vertices needed to approximate the original surface triangulation within the prescribed error bound.