面向高可信度仿真的海量CAD模型实时绘制

doi:10.16182/j.issn1004731x.joss.201812021

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (12): 4659-4667.doi: 10.16182/j.issn1004731x.joss.201812021

面向高可信度仿真的海量CAD模型实时绘制

薛俊杰^1,2, 周军华^1,2,3, 施国强^1,2,3, 曲慧杨^1,2,3

1. 复杂产品智能制造系统技术国家重点实验室北京电子工程总体研究所,北京 100854;
2. 北京市复杂产品先进制造系统工程技术研究中心北京仿真中心,北京 100854;
3. 航天系统仿真重点实验室北京仿真中心,北京 100854

收稿日期:2018-05-30 修回日期:2018-07-24 出版日期:2018-12-10 发布日期:2019-01-03
作者简介:薛俊杰(1987-),男,河南,博士,工程师,研究方向为虚拟样机与大规模几何模型处理技术; 周军华(1983-),男,湖北,硕士,高工,研究方向为复杂产品虚拟样机、协同设计与仿真。
基金资助:
国防基础科研项目(JCKY2018204B004)

Real-time Rendering of Massive CAD Models for High-credibility Simulation

Xue Junjie^1,2, Zhou Junhua^1,2,3, Shi Guoqiang^1,2,3, Qu Huiyang^1,2,3

1. State Key Laboratory of Intelligent Manufacturing System Technology, Beijing Institute of Electronic System Engineering, Beijing 100854, China;
2. Beijing Complex Product Advanced Manufacturing Engineering Research Center, Beijing Simulation Center, Beijing 100854, China;
3. Science and Technology on Space System Simulation Laboratory, Beijing Simulation Center, Beijing 100854, China

Received:2018-05-30 Revised:2018-07-24 Online:2018-12-10 Published:2019-01-03

摘要/Abstract

摘要： 复杂产品高可信度仿真中使用的高精度、全尺寸三维模型数据量庞大、复杂度高,仅仅依靠现有计算机硬件性能难以满足仿真应用对实时绘制效率的要求。通过提出一种基于最小包围盒与多视角投影的模型几何度量方法,能够准确识别出模型中狭长不规则的细小零件,并结合基于模型细节过滤的LOD自适应实时绘制算法,实现了对复杂产品海量CAD模型的实时绘制。最后,本文在波音777客机CAD模型上进行了实验验证,实验结果表明,采用本文算法能够显著提高海量CAD模型的实时绘制效率。

关键词: 高可信度, 海量CAD模型, 实时绘制, 几何度量, LOD, 绘制效率

Abstract: The full-size 3D models of complex products have huge data sizes and are extremely complex. It is difficult to meet the requirements for the real-time rendering efficiency of the simulation application by merely relying on the performance of the existing computer hardware. This paper proposes a geometry metric method based on minimum bounding box and multi-view projection, which can accurately identify narrow and irregular small parts in the model. Combining with a model-details-filtering based adaptive LOD rendering algorithm, the real-time rendering of massive CAD models is realized. The experiments are carried out on the Boeing 777 aircraft model. The experimental results show that the proposed algorithms can significantly improve the real-time rendering efficiency of the massive models.

Key words: high credibility, massive CAD model, real-time rendering, geometrical metric, LOD, rendering efficiency

中图分类号:

TP391.9

薛俊杰, 周军华, 施国强, 曲慧杨. 面向高可信度仿真的海量CAD模型实时绘制[J]. 系统仿真学报, 2018, 30(12): 4659-4667.

Xue Junjie, Zhou Junhua, Shi Guoqiang, Qu Huiyang. Real-time Rendering of Massive CAD Models for High-credibility Simulation[J]. Journal of System Simulation, 2018, 30(12): 4659-4667.

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面向高可信度仿真的海量CAD模型实时绘制

Real-time Rendering of Massive CAD Models for High-credibility Simulation

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