大型水利工程复杂虚拟视景建模与实时绘制  

Modeling and real-time rendering complex virtual scene of hydraulic engineering

作　　者：刘惠义[1] 李晓芳[1] 

机构地区：[1]河海大学计算机及信息工程学院,南京210098

出　　处：《水力发电学报》2008年第1期124-128,共5页Journal of Hydroelectric Engineering

摘　　要：用计算机生成真实感强的虚拟视景,并与视景实时交互是虚拟现实领域最具挑战性的研究方向之一,同时也是大型水利工程复杂虚拟视景仿真的关键技术。本文探讨水利工程复杂虚拟视景的静态建模和动态建模方法;从消隐、模型简化方面考虑,综合运用软件加速技术加速视景的绘制,提出了基于时空相关性的实时消隐方法,给出了基于LOD虚拟视景的实时绘制方法。这些方法和技术在"引江济太三维动态模拟系统"项目中应用,取得了较好的效果。Generating a really convincible virtual scene and quickly rendering the scene is one of the most challenging research aspects in virtual reality field, it is also the key technique of complex virtual scene of hydraulic engineering. The method of static modeling and dynamic modeling of complex virtual scene of hydraulic engineering is discussed in this paper. Software acceleration technique is used to accelerate scene rendering by means of visibility judgment and model simplification, this paper presents a visibility judgment method based on space coherence and real-time rendering method based on LOD. These methods and technique are used for projects as ＂3D dynamic Simulation System＂, they have good effect on complex virtual scene of hydraulic engineering.

关 键 词：计算机应用 虚拟视景 软件加速 实时绘制 视景模型 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TV697[自动化与计算机技术—计算机科学与技术]