基于OpenGL的微观交通仿真的三维实时场景的设计与实现

发布时间：2018-04-30 14:32

本文选题：微观交通仿真 + 三维　；参考：《北京邮电大学》2014年硕士论文

【摘要】：随着城市现代化水平的提高,道路的承载能力与使用者需求之间的矛盾日益突出。运用智能交通系统来解决城市道路交通问题越来越受到人们的重视。微观交通仿真作为智能交通研究的重点,将智能交通与计算机仿真有机的结合起来,对提高城市道路交通智能化具有深远意义。论文围绕如何将虚拟现实技术应用于微观交通仿真,主要通过调用底层三维图形库OpenGL来构建微观交通仿真的三维场景。论文首先对计算机图形学的基础原理进行理论研究,掌握基本的三维空间平移变换,旋转变换以及投影变换,介绍了OpenGL的固定图形渲染流水线,实现对真实城市交通场景的快速三维建模和仿真；然后对微观交通仿真模型中的发车模型,跟驰模型和换道模型进行了深入研究,在此基础上充分利用微观交通仿真的特点,对三维场景的渲染效果进行了增强现实感处理,添加了光照阴影,视点追踪等特殊效果。与此同时,针对交通仿真场景随时间动态变化的特点,通过运用LOD层次细节,图形硬件加速和优化场景管理来进一步提高对复杂交通场景的渲染速度。最后在系统实现阶段采用面向对象编程思想,以MFC作为基础框架运用OpenGL实现了微观交通仿真的三维场景建模和仿真优化,在微观仿真效果与仿真效率之间取得了较好平衡,并通过仿真实验结果验证了系统设计理论的正确性。
[Abstract]:With the improvement of the level of urban modernization, the contradiction between the carrying capacity of roads and the needs of users is becoming increasingly prominent. People pay more and more attention to using intelligent transportation system to solve urban road traffic problems. Micro traffic simulation is the focus of intelligent traffic research. It is of great significance to improve the intelligence of urban road traffic by combining intelligent traffic with computer simulation. This paper focuses on how to apply virtual reality technology to micro traffic simulation, mainly by calling the bottom 3D graphics library OpenGL to construct the 3D scene of micro traffic simulation. In this paper, the basic principle of computer graphics is studied, and the basic translation transformation, rotation transformation and projection transformation in 3D space are mastered, and the OpenGL fixed graphics rendering pipeline is introduced. Realize the fast 3D modeling and simulation of the real urban traffic scene, and then deeply study the departure model, the car-following model and the change of track model in the microscopic traffic simulation model, and make full use of the characteristics of the microscopic traffic simulation. The rendering effect of 3D scene is enhanced and special effects such as illumination shadow and view tracking are added. At the same time, according to the dynamic change of traffic simulation scene with time, the rendering speed of complex traffic scene can be further improved by using LOD hierarchical details, graphics hardware acceleration and optimization of scene management. At last, the object-oriented programming idea is adopted in the realization of the system, and the 3D scene modeling and simulation optimization of microscopic traffic simulation is realized by using MFC as the basic frame. The balance between the microscopic simulation effect and the simulation efficiency is obtained. The simulation results verify the correctness of the system design theory.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U495;TP391.9

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