【作者】 郑亚群；

【导师】 徐东平；

【作者基本信息】 武汉理工大学 ， 计算机应用技术， 2006， 硕士

【摘要】 视景仿真(Visual Simulation)技术研究是先进仿真和虚拟现实技术研究的主要组成部分。视景仿真相关研究的实质就是利用几何相似及感觉相似原理,构造一个使人具有临场感受的人工系统。视景仿真采用计算机图形图像技术,根据仿真目的,构造仿真对象的三维模型或再现真实的环境,以达到逼真的视觉效果。 本文分析了国内外视景仿真研究现状和发展前景,并以此为基础设计视景仿真原型系统,进行无破坏性、不受自然条件限制、低廉的、可重复性的试验。本文对视景仿真知识作了深入研究,探讨了分布式实时交互视景仿真的方法,分析了高层体系结构HLA的思想和规则及接口规范,设计并实现了分布式实时交互视景仿真运行基础的原型。重点研究了在网络分布式环境下,各仿真实体如何生成清晰逼真三维视景,实现高效而快速地交互,设计稳定而健壮的分布式运行基础。 为了实现以上研究内容,本论文对视景仿真开发平台、视景仿真相关重要技术、HLA设计方法和接口规范等进行了深入的研究,并对视景仿真中的特殊技术进行了针对性的探讨。研究内容包括三维地形仿真、不规则物体建模的粒子系统建模技术、人的建模和骨骼运动、天空和平面树的设计。对于分布式网络环境下的通信,结合对等网络的设计思想,使用DirectPlay进行网络编程。 论文第1章概述了分布视景仿真的发展和现状,并明确主要的研究内容;第2章总结和分析了视景仿真的开发平台、相关技术和方法;第3章介绍了分布式仿真系统中的高层体系结构(HLA)设计思想;第4章是分布式交互视景仿真运行基础的总体设计和具体实现;第5章系统的演示实例;第6章是全文的总结和展望。更多还原

【Abstract】 The research of visual simulation is the main constituent of advanced simulation and the research of virtual reality technology. The essence of research correlating visual simulation is to use similarity principal of geometry and feeling, structure the artificial system that enable human to have personal feeling. Visual simulation uses technology of computer graphics, according to the simulation goal, to structure 3D models of simulated objects or reproduce the real environment to achieve the lifelike visual effect.This paper has analyzed the present situation and the prospects for development of visual simulation research from domestic to foreign, and taking this as the foundation, designs prototype system of visual simulation, carries on test which has no destructiveness, is not limited in the natural conditions, is inexpensive, and has repeatability. This paper does deep research to the knowledge of visual simulation, discusses the methods of distributed real-time interactive visual simulation, analyzes the idea, rules and the interface specifications of High Level Architecture (HLA), designs and realizes the prototype of infrastructure of distributed real-time interactive visual simulation. Under the distributed network environment, It studies emphatically that how various simulation entities produce the clear lifelike 3D scene, realizes highly effective and fast communication, designs stably and healthy distributional infrastructure.In order to realizing the research content above, this paper researches deeply platforms and correlative important technologies of visual simulation, the design methods and the interface specifications of HLA and so on, and research pointedly in the special technologies of visual simulation. The content of research includes the 3D terrain simulation, particle system modeling technology used in irregular object modeling, human’s modeling and the skeleton movement, the design of sky-box and plane tree and so on. Regarding communication under the distributed network environment, it uses network programming with DirectPlay, combining the designing thought of peer-to-peer network.Chapter 1 of this paper outlines the development and the present situation of distributed visual simulation, and is clear about the main research content;Chapter 2 summarizes and analyzes develop platforms, the correlative technologies and the methods of visual simulation;Chapter 3 introduces the thoughts of High Level Architecture (HLA) used in distributed simulation system;Chapter 4 shows design and realization of infrastructure in distributed interactive visual simulation;Chapter 5 shows the demonstration example of system;Chapter 6 is the summary and forecast of this paper.更多还原