【作者】 张潞弟；

【导师】 朱群雄；

【作者基本信息】 北京化工大学 ， 计算机应用技术， 2007， 硕士

【摘要】 随着虚拟现实应用需求的上升，出现了许多关于虚拟现实的建模方法或工具，这些建模方法或工具可以划分为两种：自动建模和手动建模。当前的建模方法还不够完善，自动建模方法缺乏大范围精细贴图技术，精细度不高，较粗糙；手动建模方法对虚拟现实的交互性支持不高。两者都还没达到非常完善的程度，还有待改进。针对目前虚拟现实建模工具在人机交互性建模方面的不足，提出一种虚拟现实交互建模的方法，设计实现了一种新型建模工具VRTool。在该平台中引入了工业流水线设计技术，采用混合设计模式，提出了交互性建模的拓扑模型(VRTP)、视角跟踪导航模型(VTN)以及地形趋势增长(TTR)算法，解决了交互建模的定位坐标数据源问题、线性速度突变问题、复杂山体的生成以及虚拟现实建模工具软件开发的其它众多难题。实验结果表明了该建模方法的可靠有效性，为虚拟现实建模工具的发展提供了新的思路。目前我们已经实现了VRTool平台核心的关键功能，并已经将该平台投入到实际开发项目中。VRTool平台具备了很好的实用性和方便性，以及较好的功能完备性，能非常方便的开发中小规模的虚拟现实系统，大大缩短项目开发周期。更多还原

【Abstract】 With the application of virtual reality to the rising demand, there’s a lot of virtual reality modeling methods and tools. These modeling methods and tools can be divided into two categories: Manual and automatic modeling method. Nowaday modeling methods are still not perfect and automatic modeling methods are short of large-scale sophisticated mapping technology in detail, and even rough. Both have not reached a very good level, so it also needs to improve.In view of the shortage of current virtual reality modeling tools in the Human-Computer Interaction Modeling, we propose a virtual reality interactive modeling method. Then we design a new modeling tool VRTool with industrial pipeline and mixed design patterns, and propose virtual reality topological model (VRTP), visual trace navigation model (VTN) and Terrain Trend Rise arithmetic (TTR). We solve the problems of data source in located coordinates, linear pace mutation, formation of complex mountains and other problems in the development of software platform. The experimental results show the reliability and validity of the modeling method, and a new thought for interaction modeling is provided to the development of VR modeling tool. We have implemented the core functions of VRTool platform, and the VRTool platform has already been used into the actual project of development. VRTool is a very good platform for practicality and convenience, and better functional completeness. It’s convenient to develop a small or medium size virtual reality system, and it can greatly shorten project development cycle.更多还原