一种基于动态扩散机理的水墨仿真模型

Simulation Model of Ink-Wash Effect Based on a Dynamic Diffusion Mechanism

水墨动态扩散效果的数字实现是水墨仿真的关键和基础.在剖析水、墨和纸之间的相互作用与关系的基础上,提出了依据水、墨、纸的相互作用表征水墨动态扩散机理的改进方法,将水墨视为水分子和墨粒子的组合,构建宣纸纤维分布结构,利用粒子系统,建立了表征三者相互关系的水墨扩散仿真模型,简化了水墨扩散过程,减少了仿真难度.实验结果表明,该模型能够较真实地反映水墨动态扩散的运动机理,大大增强了水墨粒子扩散仿真效果的随机性和动态性.该模型粒子可控性强,计算量大大降低,并具有很强的可扩展性.

Digitalization of the ink-wash diffusion effect is a key in simulating ink-wash by computer graphics. Based on an analysis of the relationship between water, ink and rice paper, an improved method that is token the mechanism of ink-wash dynamic diffusion by these relations is presented. Assuming that ink-wash consists of water and ink molecules and by constructing a rice paper structure, a simulation model using a particle system is established. The process of dynamic diffusion and its simulation are simplified. Simulation experiments on Maya show that the diffusion effect of ink-wash using this model is more realistic. Randomness and mobility of the ink-wash dynamic diffusion is visibly improved. In this way, controllability of particles is enhanced, and the amount of computation is reduced. This model is more flexible for the implementation of various styles of ink-wash simulation.