基于建筑虚拟场景生成和浏览的实现  

Implementation of Creating and Browsing of Virtual Scene Based on Building

作　　者：赵熠[1] 王剑英[1] 

机构地区：[1]中国科技大学计算机系,合肥230027

出　　处：《计算机仿真》2008年第7期228-231,261,共5页Computer Simulation

摘　　要：虚拟现实技术是当前计算机领域中的一个重要的分支。针对虚拟显示技术在房地产领域的应用,以虚拟场景的显示和浏览为目标,研究了建筑模型的数据存储方法和交互浏览等相关技术。采用结构实体几何法(CSG)对三维房屋进行建模,使用单层房屋数据来简化数据的存储,在浏览实现中,改进传统的浏览算法,采用视图变换,并利用以观察参考点为中心的半球模型建立OpenGL视点坐标系与世界坐标系的相互对应关系,通过改变视点坐标系来实现场景的浏览。该系统使用VC与OpenGL相结合的方法最终实现了房屋建筑的三维显示与浏览,在具体的应用中也取得了较好的结果。Virtual reality technology is an important branch in computer research field.Based on the application of real estate,this paper implements the display and browse of virtual scene and investigates the related technology about data storage and interactive browsing.Constructive Solid Geometry is adopted in modeling 3D building and monolayer building data are used to simplify data storage.An improved browsing algorithm is presented.In the algorithm,scene browsing is implemented by incorporating view transformation and establishing interrelationship between eye coordinate system in OpenGL and world coordinate system through hemisphere model with eye coordinate system based on reference point.The system implements the 3D display and browse of buildings by the methods incorporating VC and OpenGL.And this method performs well in realistic application.

关 键 词：虚拟现实 交互浏览 结构实体几何法 视图变换 视点 坐标系 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]