基于Monte-Carlo辐射模型的水下光场绘制技术研究

过去的几十年中人们提出许多处理光照及阴影的方法,但这些常规方法大都致力于生成空气介质中真实感的三维动画,而对传统的水下光场及光影的动态效果建模问题研究较少。给出一个水下光场及流动光影效果的计算机模型。该模型从海洋水体的光传输物理特性,然后根据该特性给出Monte-Carlo模型,通过研究风海波下光的干涉现象及漫射现象,建立水下光场的二三维可视化模型,基于改进的全局光照及辐射度模型实时计算出阴影的流动效果。此外,还给出了生成三维水下光场及动态光影的方法及相应的游戏动画图例。

Research on Render method of Underwater Light Fields Based on Monte Carlo Radiative Transfer Model

In the past few decades,people had studied many light render and shadow methods,but the conventional methods mostly aimed at generating realistic 3 dimensions animation in air,and seldom focused on the modeling of traditional underwater light field and dynamic smooth shadow.A computer model of automatically generated underwater light field and dynamic lighting effects was proposed.First,the physical properties of light transmission were introduced into ocean water.And then,according to the characteristics of Monte Carlo-given model,the light interference and diffuse reflection under the wind sea were researched,and 2 and 3 dimensions visualization model underwater light field were built.In addition,the real-time calculation of the shadow flow effect based on an improved global illumination and radiation model were given.The result shows the 3 dimensions underwater light field and dynamic shadow methods and corresponding game animation.