中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
基于时变纹元的真实感草地枯萎模拟

文献类型:期刊论文

作者焦少慧 ; 杨刚 ; 吴恩华
刊名软件学报
出版日期2010
卷号21期号:9页码:2224-2236
关键词时变纹元 纹元变形 点模型 物理-生物模型 时变度time-varying texel texel deformation point-based model physical-biological model weathering degree
ISSN号1000-9825
其他题名realistic grass withering simulation based on time-varying texels
中文摘要对表示复杂自然物体的纹元(texel)方法进行扩展,提出时变纹元的概念,以模拟草叶、毛发等自然物体随时间而变化的真实感效果.时变纹元内存储着自然物体随时间变化的纹元数据,从而可用于构建时变三维数据场,实现物体时变效果的模拟.采用一种纹元变形算法来生成时变纹元,该算法首先将基本纹元结构转化为点模型,然后对点模型进行动态模拟来生成时变数据,再将时变的点模型数据进行转化而得到时变纹元结构.运用时变纹元方法实现了草地随时间逐渐枯萎效果的真实感模拟.为了能够模拟草地枯萎变化过程中真实的形态、材质变化,基于物理学以及生物学原理构建了物理-生物模型来指导草地点模型的动态变化模拟,同时生成草地时变纹元.将所生成的草地时变纹元重复性地映射在地形网格上,就可以实现大规模草地场景枯萎效果的模拟.另外,在时变纹元映射过程中还应用了混合叠加算法来增加草地多样性,并运用LOD算法来提高绘制效率.实验结果表明,采用时变纹元方法可以成功实现草地时变效果的真实感模拟.
学科主题Computer Science
语种中文
公开日期2011-05-23
附注In this paper, a technique called Time-Varying Texel(TVT)is presented for simulating the withering effects of grassland. Time-Varying Texel is defined as an extension of the traditional texel structure by adding a time dimension, where the texel at different time is computed by using a Texel Deformation Technique. In this approach, a point based structure(PBS)is employed in combination with the Time-Varying Texel. Throuogh the introduction of PBS as a bridge, a Physical-biological Model can be applied to handling the deformation at the grass texel. In addition, a mingling algorithm is applied to enhance the diversity of grassland, and the LOD representation of TVT is developed for promoting efficiency. Experimental results show that the realistic grass time-varying simulation is well achieved with the proposed techniques
源URL[http://124.16.136.157/handle/311060/9928]  
专题软件研究所_计算机科学国家重点实验室 _期刊论文
推荐引用方式
GB/T 7714
焦少慧,杨刚,吴恩华. 基于时变纹元的真实感草地枯萎模拟[J]. 软件学报,2010,21(9):2224-2236.
APA 焦少慧,杨刚,&吴恩华.(2010).基于时变纹元的真实感草地枯萎模拟.软件学报,21(9),2224-2236.
MLA 焦少慧,et al."基于时变纹元的真实感草地枯萎模拟".软件学报 21.9(2010):2224-2236.

入库方式: OAI收割

来源:软件研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。