Rendering Grass Blowing in the Wind with Global Illumination

作     者：N Max S Saito K Watanabe M Nakajima 

作者机构：Computer Science Department University of California Department of Computer Science Tokyo Institute of Technology 

出 版 物：《Tsinghua Science and Technology》 (清华大学学报（自然科学版（英文版）)

年 卷 期：2010年第15卷第2期

页      面：133-137页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：the Japan Society for the Promotion of Science for financial support 

主　　题：global illumination lattice Boltzmann method plane parallel radiation transport 

摘      要：We have simulated a time varying wind field using the lattice Boltzmann model, and its effect on blades of grass with a simple mass-spring model. We present a global illumination model for multiple scattering of incident sun and sky illumination within the field of grass. We model the grass as a continuous distribution of infinitesimal colored scattering flakes and solve a system of differential equations for the radiance transport. We repeat this for a collection of grass bending directions and amounts, and then interpolate the solutions when rendering animations of blowing grass.