摘要： 人眼是人类获取信息最主要的器官，进行人眼的可视性分析是人机工效分析的重要工作内容。当前主流的可视性分析工具主要集中在可视范围的定性标识，缺少高级的光学特性建模过程，不能逼真反映人眼在不同工况下的视觉情况。提出一种基于光线追踪的可视性分析方法，建立了一种全局光照模型，在此基础上设计并开发了一套渲染引擎，能逐像素地进行可视对象渲染；针对CATIA平台，开发了一个带有反射与阴影特性的可视性分析组件。该工作扩展了CATIA可视性分析的维度和深度，为其人机工程组件新增了一个功能强大的模块。

中图分类号： TP319
文献标识码： A
DOI： 10.19358/j.issn.2096-5133.2021.01.005
引用格式： 陈川，任强，邓金华。 基于光线追踪的可视性分析研究与模块开发[J].信息技术与网络安全，2021，40（1）：26-30.

Research and module development of visibility analysis based on ray tracing

Abstract： Visibility analysis is an important part of ergonomics as the human eye is the most important organ to obtain information. The current mainstream visibility analysis tools mainly focus on the qualitative identification of the visual range, lacking advanced optical characteristic model, and cannot realistically reflect the visual situation of the human eye under different working conditions. This paper proposes a visibility analysis method based on ray tracing technology and establishes a global illumination model. A set of rendering engine based on this method is designed and developed to render visual objects pixel by pixel. A visibility analysis component with reflection and shadow feature also realized for CATIA. This paper extends the dimension and depth of CATIA visibility analysis, and adds a powerful module for its ergonomic components.

Key words : ergonomics；visibility analysis；ray tracing；global illumination