Intersection-Free Tetrahedral Meshing From Volumetric Images
COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING-IMAGING AND VISUALIZATION(2013)
摘要
High-fidelity meshes are essential in many visualisation and simulation applications. In this study, we develop an automatic approach to generate intersection-free meshes from volumetric images. Due to the properties of octree-based dual contouring, the generated elements may intersect with each other. We need a robust method to generate quality intersection-free tetrahedral meshes with no topology ambiguity. In our algorithm, we first analyse each sign-change edge or interior edge to define an envelope, and then check whether self-intersections will appear. In the end, we choose appropriate meshing technique to create intersection-free meshes. Our main contribution lies in intersection-free tetrahedral meshing for single-material and multiple-material domains, with topology ambiguities resolved by handling hybrid grids. We have applied our method to two biomedical and one microstructure data-sets and obtained good results based on our quality metrics.
更多查看译文
关键词
intersection free, dual contouring, tetrahedral mesh, envelope, octree, hybrid grids
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要