基于人眼视觉的星空背景建模与仿真  

Modeling and Simulation of Celestial Background Based on Human Vision

作　　者：戴国俊[1,2] 刘玉庆[1] 

机构地区：[1]中国航天员科研训练中心,北京100094 [2]中国卫星海上测控部远望三号测量船,江苏江阴214400

出　　处：《计算机仿真》2011年第12期68-72,共5页Computer Simulation

基　　金：国防基础科研计划(B1620080001);中国航天医学工程预先研究项目(2007SY5413006)

摘　　要：研究构建一个虚拟太空出舱操作系统,作为航天员训练环境,过去对星空模型最终视觉效果的渲染却研究甚少。经典的程序用描点或纹理贴图方式来仿真星空,对于虚拟现实系统,真实感明显不足。为了解决上述问题,从人眼视觉模型出发,依据计算天文学知识,提出利用GPU片段着色技术,对星空模型进行光晕视觉效果处理,在OGRE平台上构建了一个沉浸感强、真实度高的星空背景模型。使航天员在虚拟操作训练系统环境中得到了很好的沉浸感强的环境。仿真结果表明,改进方法构建的星空背景完全满足航天员虚拟训练场景的逼真度和实时性要求。This research aims to build a virtual space of extravehicular operating system as a training environment of the astronauts among which the past research seldom focused on the final visual rendering.For the virtual reality system,the realism of the classic description of the program points or texture mapping to simulate the sky is clearly insufficient.For solving such problem,this paper did post-processing on glare visual effects through calculation of astronomy and GPU fragment shader technology on the bases of human visual model,so that the celestial background model with strong sense of immersion and realism has been built on the platform of OGRE.This also allows the training of the astronauts in a virtual operating system which provides a strong sense of immersion environment.Simulation results have shown that the celestial background model constructed by such method can fully meet the requirements of fidelity and authenticity of the scene of virtual training of astronauts.

关 键 词：人眼视觉 光晕效果 星空背景 建模仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]