虚拟雨景中路面湿润效果的实时建模与绘制  

Real-Time Modeling and Rendering of Wet Road in Raining Scene

作　　者：王长波[1] 杨志亮[2] 张鑫[2] 彭群生[2] 

机构地区：[1]华东师范大学软件学院,上海200062 [2]浙江大学CAD＆CG国家重点实验室,杭州310058

出　　处：《计算机辅助设计与图形学学报》2008年第6期713-717,共5页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然科学基金(60603076);国家“八六三”高技术研究发展计划(2007AA01Z316);上海市科委自然科学基金(07ZR14035)

摘　　要：对虚拟雨景中路面湿润效果的模拟可大大增强场景的真实感.通过分析路面湿润效果的形成机制,提出了基于双层反射的路面湿润模型,根据子面反射理论和Torrance-Sparrow光照模型计算湿润时路面上的倒影和灯影,并采用路径跟踪技术对湿润效果进行绘制.利用GPU加速技术可实时绘制出不同情况下的路面湿润效果,效果逼真.The simulation of the wet road will greatly enhance the reality of a raining scene. By analyzing the physical mechanism of wet effect, we propose a double-reflection model of the wet road. Based on the subsurface scattering theory and the Torrance-Sparrow lighting model, the realistic reflections of the surrounding scene on the wet road are simulated. The reflection and refraction rays are traced with a novel path tracing algorithm. By incorporating the GPU technique, various conditions of wet road can be rendered in real time, and the results are quite realistic.

关 键 词：路面湿润 建模 实时绘制 虚拟雨景 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]