【作者】 张开权；

【导师】 李庆华；

【作者基本信息】 华中科技大学 ， 计算机应用技术， 2006， 硕士

【摘要】 随着计算机图形学技术和多媒体技术的快速发展,基于虚拟现实技术的各种仿真系统的开发已成为研究热点。虚拟现实技术是计算机高新技术领域中的重要技术之一。目前在航天、医学、特殊训练、作战演习、教育培训等领域取得了广泛的应用。研究了虚拟仿真训练系统的技术特点和实现方法,确定了该系统的实现途径,并以实际油库的消防预案为基础,在微机平台上,实现了一个较为完整的三维虚拟仿真训练系统。系统将特定火灾现场进行虚拟再现,加入一定的交互性操作,使用户仿佛置身于真实的火场之中,通过对火灾扑救实战过程的全方位模拟,从而以较小代价达到训练的目的。系统中的模型构建工作是一个比较关键的环节,重点叙述了常用的建模方法和建模技术,以及场景特效等。最后,以模型中油库地形的构建为例,讨论利用MultiGen进行模型构建的全过程,并且探讨了建模的关键技术和建模过程中容易产生的问题。在对系统进行了全面的分析后,使用Visual C++ 6.0和OpenGVS对系统的场景进行了控制,同时使用OpenGL来实现场景中的三维特效,增加其沉浸感。对该系统的系统结构、模型载入场景的方案和三维特效的实现等关键部分进行了详细的分析和介绍。同时,结合理论研究,对系统实现过程中的视点动态规划方式、碰撞检测和路径规划等关键技术进行了详细阐述。经过实验验证,所开发的视景仿真系统具有良好实时性和交互性。更多还原

【Abstract】 With the development of the technologies of computer network and multimedia, visual system is an important aspect of virtual driving simulator. Virtual Reality (VR) is one of important techniques in computer advancedskillful field, it can serve for many fields, such as Spaceflight, Medicine, Special training, Campaign rehearsing and Education training, etc.In this paper, we study the technical characteristics of virtual simulation training system and methods to achieve, identify ways to achieve the system, and to the actual oil-based fire plans in computer platform, achieving a more complete three-dimensional virtual simulation training systems. The system is given a virtual scene of the fire, adding the interactive operation, so that users seem real fire scene outside, through the process of fire-fighting combat simulation, thereby achieving cost to the smaller training purposes.Establishing the model is an important tache. It introduces the 3D scene constructing technology, modeling technology and special effect. At the end part of the paper, it gives an example of the lage virtual oil warehouse to discuss how to build model with MultiGen Creator, and discuss the key techniques and problems during the building models.After the overall analyse, the paper introduces how to control scene by VisualC++ and OpenGL and OpenGVS. It provides the detail of the framework of the system, holding model to scene ways, and implement of 3D specific effect, etc. At the same time, by combining theory research, the key implement techniques in the visual simulating system, such as the planning methods of eyesight point, collision detection and path planning are briefly discussed. The interaction and real-time of this visual simulation has been confirmed experimentally.更多还原