【作者】 李荣辉；

【导师】 李从信；

【作者基本信息】 大庆石油学院 ， 计算机应用技术， 2007， 硕士

【摘要】 虚拟现实技术是近年来在计算机领域引起广泛关注的技术,虚拟现实技术是21世纪高科技发展的一个重要方向。三维建模技术是虚拟现实中最重要的技术领域,也是虚拟现实技术中的关键技术之一。三维建模技术是整个虚拟现实系统建立的基础,是所有应用中的一个关键的步骤和技术。论文从计算机图形学的基本原理出发,介绍了和论文相关的计算机图形学理论,包括:计算机图形学的基本内容、图形变换技术和真实感图形技术。在此基础上,介绍了面向虚拟现实的建模技术,包括VR建模技术的特点、主要技术指标、基本内容、实现方式和关键技术。这些为系统后期的应用研究奠定了坚实的理论基础。以联合站系统的场景为例,以三维场景构建流程为主线,从数据采集和预处理、三维场景构建方法、场景集成和调度管理等方面介绍了三维虚拟场景构建的过程和方法。在此基础上,进行了三维建模优化方法的研究,包括三维建模优化流程、结构优化、模型优化和基于k_dop的层次简化算法。这是本文的创新点之一,使建模优化贯穿于整个建模过程。在最后的分析和研究过程中,从系统分析与设计、系统三维虚拟场景构建、数据库技术、场景表现艺术性和三维物体运动模拟等方面介绍了三维建模技术在联合站系统中的应用实现。在实现基础上,讨论了系统建模遇见的问题及解决,对系统三维模型快速显示技术进行了总结,并对建模优化算法进行了对比分析。更多还原

【Abstract】 In recent years, Virtual Reality (VR) Technology has been paid extensive attention in computer field. Virtual Reality Technology is an important direction of the high-tech developments in the twenty-first century. 3D modeling technology is the most important part and one of the key technologies of virtual reality. 3D modeling technology is the foundation of the VR system and the key step and technology of all the applications.Based on the fundamental of the computer graphics, some theory of the computer graphics that related with the paper are introduced. It includes basic content of the computer graphics, graphics transformation technology and sense of reality graphics technology. Based on this, it introduces virtual reality-oriented modeling technology. Vitual Reality modeling technology trait, main technology target, basic content, implementation manner and key technology are introduced in virtual reality-oriented modeling technology. These lay solid theory foundation for upper application study of the system. Take Combination Station Scene for instance, on the basis of three-dimensional scene construction flow, from data collection and pretreatment, three-dimensional scene construction method, scene integration and schedule management aspects, three-dimensional virtual scene construction process and method are introduced. Based on this, 3D modeling optimization method is studied. It includes 3D modeling optimization flow, structure optimization, model optimization and hierarchy simplification algorithm based on k_dop. This is one of the innovation points, modeling optimization run through whole modeling process. In the last course of the analysis and study, from system analysis and design, system three-dimensional virtual scene constuction, database technology, scene representation art and three-dimensional object movement simulation aspects, application implementation based on 3D modeling technology in the combination station system is discribed. Based on implementation, familiar question in system modeling and solutions are discussed, system three-dimensional model rapid display technology is summarized and modeling optimization algorithm compare analysis is discussed.更多还原