Technology of Graphic & Image
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App. Res. of Comp. Printed Article
Vol. 41, 2024 No. 2
602-608

Volume rendering automatic transfer function design for explosion pressure field

Lu Manjun1
Xie Lijun1
Qi Jiachen1
Wang Pan2
Yao Chengbao2
1. School of Aeronautics & Astronautics, Zhejiang University, Hangzhou 310027, China
2. Northwest Institute of Nuclear Technology, Xi'an 710024, China
DOI: 10.19734/j.issn.1001-3695.2023.05.0284

Abstract

Direct volume rendering is widely used in scientific visualization. The transfer function largely determines the effect of rendering results. Explosion data is large-scale complex time-varying volume data. The value range and distribution of its pressure field will change drastically with time. In order to realize continuous tracking of shock wave propagation characteristics, this paper proposed an automatic transfer function design method based on scalar-temporal gradient(STG) 2D space. Combined with the physical laws in the explosion process, the method divided the STG space into multiple states and summarized the transition laws between states. It encoded the propagation characteristics of shock waves with state transition chain(STC) of a certain length, called time-varying features. The color assignment in the transfer function took time-varying features as the basic unit, which was done automatically through a complete state transition chain. The opacity in the transfer function used a piecewise non-linear curve based on the pressure change rate, highlighting the characteristics of severe pressure changes. The paper selected two typical large-scale explosion scenarios to verify the method. The rendering results all contain a wealth of clearly distinguishable shock wave propagation characteristics. The results show that the generated transfer function can stably and accurately capture the propagation characteristics of shock waves in the whole-time dimension.

Publish Information

DOI: 10.19734/j.issn.1001-3695.2023.05.0284
Publish at: Application Research of Computers Printed Article, Vol. 41, 2024 No. 2
Section: Technology of Graphic & Image
Pages: 602-608
Serial Number: 1001-3695(2024)02-043-0602-07

Publish History

[2023-10-07] Accepted Paper
[2024-02-05] Printed Article

Cite This Article

陆曼君, 解利军, 祁佳晨, 等. 面向爆炸压力场的体绘制自动传输函数设计 [J]. 计算机应用研究, 2024, 41 (2): 602-608. (Lu Manjun, Xie Lijun, Qi Jiachen, et al. Volume rendering automatic transfer function design for explosion pressure field [J]. Application Research of Computers, 2024, 41 (2): 602-608. )

About the Journal

  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

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