应用于虚拟环境的动态实时特效研究

Research on Real-time Dynamic Special Effects Applied in Virtual Environment

研究增强画面表现力时,虚拟环境可以为用户再现逼真的自然场景,而特殊效果可以增强用户身临其境的体验。根据实时渲染关键技术和视觉经验的影响对三种动态实时特效进行了研究与改进,为增加实效渲染效果太视觉效果的表现:参照自然雾的状态,对雾化因子进行改进,实现了非均匀介质的雾化效果,表现了的空气透视效果;使用基于纹理的方式仿真实时辉光,增强光线的真实感;分析了景深的原理,运用非线性焦距变化对视点进行调度,以此来引导用户视线,实现了空间的多层次性。

The realistic natural scene can be provided by virtual environment,while the special effects may enhance the user＇s feelings about themselves.This paper focuses on three effects for research in terms of key technique of real - time rendering and the influence of visual experiences,enhances the visual present.How to use inhomogeneous medium atomization to enhance the aerial perspective is discussed.Real - time glow is used to enhance the realistic of light,and real - time field of depth is used to guide user＇ s view and as a result to achieve the levels of space.