面向大规模重复结构CAD模型的快速截面可视化方法

发布时间：2018-02-21 10:02

本文关键词： 截面可视化重复结构 D纹理映射　出处：《计算机辅助设计与图形学学报》2017年03期 　论文类型：期刊论文

【摘要】：截面可视化是揭示复杂三维CAD模型内部结构的有效方法,但目前基于面片求交的截面可视化方法计算量大,难以实现大规模CAD模型的交互可视化,为此提出一种结合面片求交和3D纹理的混合截面交互可视化方法.针对由少量基本对象按规律摆列而成的规则CAD模型-重复结构CAD模型,在预处理阶段,将所有基本对象离散成高精度3D纹理;在可视化对象选取阶段,通过截面可视化裁剪算法选择可视化对象;在截面可视化阶段,通过预估每个对象在屏幕的投影情况选择可视化方法.该方法基于中国科学院核能安全技术研究所FDS团队自主研发的超级蒙卡核模拟软件系统SuperMC进行研究,并使用全堆芯模型以及铅基反应堆模型进行测试,结果表明,该方法视觉效果接近基于面片求交的方法,同时实现了交互可视化.
[Abstract]:Section visualization is an effective method to reveal the internal structure of a complex three-dimensional CAD model. However, the cross-section visualization method based on the cross section intersection is very difficult to realize the interactive visualization of large-scale CAD model. In this paper, a hybrid cross-section interactive visualization method is proposed, which combines the intersection of surface slices with 3D textures. In the preprocessing stage, a regular CAD model-repeated structure CAD model, which consists of a small number of basic objects arranged according to the law, is proposed. All basic objects are discretized into high-precision 3D textures; in the stage of visual object selection, the visualization objects are selected by section visualization clipping algorithm; in the section visualization stage, This method is based on the super Monka simulation software system SuperMC developed by the FDS team of the Institute of Nuclear Safety Technology of the Chinese Academy of Sciences. The results show that the visual effect of the method is close to that of the method based on the intersection of surface chips, and the interactive visualization is realized at the same time.
【作者单位】：合肥工业大学可视化与协同计算研究室;中国科学院核能安全技术研究所中子输运理论与辐射安全重点实验室;
【基金】：国家自然科学基金(61202283,61472115,61370167) 安徽省科技攻关项目(1401b042009)
【分类号】：TP391.72

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