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Quality meshing with weighted Delaunay refinement

机译:高质量的网格划分和加权Delaunay细化

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Delaunay meshes with bounded circumradius to shortest edge length ratio have been proposed in the past for quality meshing. The only poor quality tetrahedra called slivers that can occur in such a mesh can be eliminated by the sliver exudation method. This method has been shown to work for periodic point sets, but not with boundaries. Recently a randomized point-placement strategy has been proposed to remove silvers while conforming to a given boundary. In this paper we present a deterministic algorithm for generating a weighted Delaunay mesh which respects the input boundary and has no poor quality tetrahedron including silvers. This success is achieved by combining the weight pumping method for sliver exudation and the Delaunay refinement method for boundary conformation. We show that an incremental weight pumping can be mixed seamlessly with vertex insertions in our weighted Delaunay refinement paradigm.
机译:过去已经提出了有界外圆与最短边长比的Delaunay网格,以实现高质量的网格划分。可以通过条子渗出方法消除在这种网格中出现的唯一质量较差的称为“ Islivers ”的四面体。已经证明该方法适用于周期点集,但不适用于边界。最近,已经提出了一种随机的点放置策略,以在符合给定边界的同时去除银。在本文中,我们提出了一种确定性算法,用于生成加权Delaunay网格,该网格尊重输入边界并且没有包括银在内的劣质四面体。通过将用于条子渗出的砝码抽运方法与用于边界构造的Delaunay细化方法相结合,可以取得成功。我们表明,在我们的加权Delaunay精炼范式中,可以将增量权重泵与顶点插入无缝地混合在一起。

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