布料上的污渍效果是计算机游戏和影视制作中有待模拟的细节之一.提出一种基于物理的布料上污渍效果的真实感模拟的方法——采用多层模型对布料进行建模.对于污渍在布料上的渗透和扩散运动,提出了NSEAM(Navier-Stokes equations for anis...布料上的污渍效果是计算机游戏和影视制作中有待模拟的细节之一.提出一种基于物理的布料上污渍效果的真实感模拟的方法——采用多层模型对布料进行建模.对于污渍在布料上的渗透和扩散运动,提出了NSEAM(Navier-Stokes equations for anisotropic edia)模型,它可以模拟污渍和布料之间的相互作用,如扩散作用、蒸发作用、渗透作用等.最后,采用硬件加速的方法对上述过程进行了真实感绘制.实验结果表明,文中方法可以生成不同结构的布料上较为逼真的污渍效果,其绘制效果令人满意.展开更多
Generation of photo-realistic images of human hair is a challenging topic in computer graphics. The difficulty in solving the Problem in this aspect comes mainly from the extremely large number of hairs and the high c...Generation of photo-realistic images of human hair is a challenging topic in computer graphics. The difficulty in solving the Problem in this aspect comes mainly from the extremely large number of hairs and the high complexity of the hair shapes. Regarding to the modeling and rendering of hair-type objects, Kajiya proposed a so-called texel model for producing furry surfaces. However, Kajiya's model could be only used for the generation of short hairs. In this paper, a concise and practical approach is presented to solve the problem of rendering long hairs, and in particular the method of rendering the smooth segmental texels for the generation of long hairs is addressed.展开更多
文摘布料上的污渍效果是计算机游戏和影视制作中有待模拟的细节之一.提出一种基于物理的布料上污渍效果的真实感模拟的方法——采用多层模型对布料进行建模.对于污渍在布料上的渗透和扩散运动,提出了NSEAM(Navier-Stokes equations for anisotropic edia)模型,它可以模拟污渍和布料之间的相互作用,如扩散作用、蒸发作用、渗透作用等.最后,采用硬件加速的方法对上述过程进行了真实感绘制.实验结果表明,文中方法可以生成不同结构的布料上较为逼真的污渍效果,其绘制效果令人满意.
基金the National Natural Science Foundation of China (Nos.69873004,60071002), the National '863' High-Tech Programme of of China (
文摘Generation of photo-realistic images of human hair is a challenging topic in computer graphics. The difficulty in solving the Problem in this aspect comes mainly from the extremely large number of hairs and the high complexity of the hair shapes. Regarding to the modeling and rendering of hair-type objects, Kajiya proposed a so-called texel model for producing furry surfaces. However, Kajiya's model could be only used for the generation of short hairs. In this paper, a concise and practical approach is presented to solve the problem of rendering long hairs, and in particular the method of rendering the smooth segmental texels for the generation of long hairs is addressed.
基金美国国家自然科学基金NSF Thermal Systems Program(CTS-9213183)NSF Information Technology Research Program(ACI-0113851)+1 种基金北京理工大学优秀青年教师资助计划(2007Y1103)北京理工大学基础研究基金资助项目(20071142001)
