...
首页> 外文期刊>ACM Transactions on Graphics >Conforming Weighted Delaunay Triangulations
【24h】

Conforming Weighted Delaunay Triangulations

机译:符合加权德拉尼亚三角形

获取原文
获取原文并翻译 | 示例
           

摘要

Given a set of points together with a set of simplices we show how tocompute weights associated with the points such that the weighted Delaunaytriangulation of the point set contains the simplices, if possible. For a giventriangulated surface, this process provides a tetrahedral mesh conformingto the triangulation, i.e. solves the problem of meshing the triangulatedsurface without inserting additional vertices. The restriction to weightedDelaunay triangulations ensures that the orthogonal dual mesh is embedded,facilitating common geometry processing tasks.We show that the existence of a single simplex in a weighted Delaunaytriangulation for given vertices amounts to a set of linear inequalities, onefor each vertex. This means that the number of inequalities for a giventriangle mesh is quadratic in the number of mesh elements, making the naiveapproach impractical. We devise an algorithm that incrementally selectsa small subset of inequalities, repeatedly updating the weights, until theweighted Delaunay triangulation contains all constrained simplices or theproblem becomes infeasible. Applying this algorithm to a range of trianglemeshes commonly used graphics demonstrates that many of them admita conforming weighted Delaunay triangulation, in contrast to conformingor constrained Delaunay that require additional vertices to split the inputprimitives.
机译:给出了一组点与我们展示如何的一套计算与点的点关联的权重,使得加权delaunay点集的三角测量包含简单,如果可能的话。对于给定的三角形表面,该过程提供了四面体网格符合到三角测量,即解决了三角化的问题表面而不插入额外的顶点。对加权的限制Delaunay三角形是确保正交的双网格嵌入,促进公共几何处理任务。我们表明,在加权Delaunay中存在单个单纯x给定顶点的三角测量量为一组线性不等式,一个对于每个顶点。这意味着给定的给定的不等式数三角网格在网格元素的数量中是Quadativic的,使得天真接近不切实际。我们设计了一种逐步选择的算法一小部分不等式,反复更新权重,直到加权delaunay三角测量包含所有约束的简单或问题变得不可行。将该算法应用于一系列三角形常用图形的网格展示了其中许多人承认与符合符合的符合加权DELAUNAI三角测量或约束delaunay,需要额外的顶点以分割输入原语。

著录项

获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号