模拟飞行器的虚拟实现
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摘要
虚拟现实是一种高度逼真地模拟人在自然环境中视、听、动等行为的人机界面。图形生成是虚拟现实的一项关键技术。本文主要研究虚拟现实中建模技术的应用,讨论了传统建模技术和分形建模技术,给出了改进的方法,并应用于模拟飞行的视景仿真。
     本文第一章简单介绍了虚拟现实的基本概念、重要特点以及虚拟现实系统的分类和应用领域,指出了分形建模是一种有前途的关键技术。
     第二章介绍虚拟现实系统的构成,详细介绍了桌面虚拟现实系统的硬件组成和软件系统。
     第三章讨论了基于虚拟现实技术的飞行训练模拟器的优点和实现时的关键技术。
     第四章分析了传统建模技术在虚拟现实中的应用。
     第五章讨论了分形布朗运动和基于分形的图形生成技术,给出了改进的方法及实现。
     第六章是全文的总结,介绍了本论文的主要研究结果,根据目前的研究结果,提出了有待进一步研究的关键技术问题。
Virtual reality is an advanced man-machine interface which allows the behaviors of the human being, such as viewing, listening and touching, to be conducted in a natural but virtual environment. Graphic rendering is the bottleneck in virtual reality. In this dissertation, the generation and rendering of models in virtual reality are studied and traditional modeling technology and fractal modeling technology are discussed and the improved method is published and applied to view scene emulation of simulated flight.
    In Chapter 1, we describe the basic concepts and primary characteristics of virtual reality system and point out that fractal modeling is a kind of promising key technology.
    In Chapter 2, we introduce the compositions of desktop virtual reality system in detail.
    In Chapter 3, we discuss merits and key technologies of the flight training simulator based on the technology of virtual reality.
    In Chapter 4, we analyse the application of traditional modeling technology in virtual reality.
    In Chapter 5, we discuss Fractional Brownian Motion and graphics rendering technology based on fractal and give the improved method.
    In Chapter 6, the author draw a conclusion. Based on current research results, some possible future work are described.
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