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Automatic block decomposition based on dual surfaces
Computer-Aided Design ( IF 4.3 ) Pub Date : 2020-06-02 , DOI: 10.1016/j.cad.2020.102883
Zhihao Zheng , Rui Wang , Shuming Gao , Yizhou Liao , Mao Ding

A high-quality block structure of a 3D model can support many important applications; however, the automated generation of a high-quality block structure is still a challenging problem. In this paper, a dual surface-based approach to automated and valid block decomposition of 3D models is proposed. First, dual loops for block decomposition are generated with the help of a computed frame field whose three types of degenerated singularities are corrected. Then, a required dual surfaces set is constructed to suitably separate all the boundary elements of the 3D model and singularities of the frame field with the help of the basis of the non-trivial loops on the boundary surfaces. Finally, a valid block structure is obtained by performing dual operations along the dual surfaces on the hex mesh generated by splitting the tetrahedral mesh of the 3D model. Experimental results showed the effectiveness of the proposed approach.



中文翻译:

基于双曲面的自动块分解

3D模型的高质量块结构可以支持许多重要应用。然而,高质量块结构的自动生成仍然是一个具有挑战性的问题。本文提出了一种基于双曲面的方法来对3D模型进行自动有效的块分解。首先,借助计算的帧字段生成用于块分解的双循环,该帧的三种类型的简并奇异性都得到了校正。然后,构造必要的双重曲面集,以借助边界曲面上的非平凡环来适当地分离3D模型的所有边界元素和帧场的奇点。最后,通过沿通过分割3D模型的四面体网格生成的六边形网格上的双重表面执行双重操作,可以获得有效的块结构。实验结果表明了该方法的有效性。

更新日期:2020-06-02
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