摘要
高阶有限元等值面通常用基函数定义,利用移动立方体法和射线追踪法等传统的方法对其可视化时,需要嵌套求根,计算开销高.文章提出用粒子系统可视化这些等值面,一方面允许参考空间中的粒子对等值面采样,避免逆映射位置的大量计算,另一方面等值面的粒子分布可以由等值面的几何信息控制,例如表面梯度和曲率,实现高效和准确的等值面的表示.
When higher order finite element iso-surface usually with primary function definition,use migration traditional and so on cube law and beam pursuit method methods to its visualization,needs the nesting to extract a root,the computation expenses are high.This article proposes with granule system visualization these iso-surfaces,on the one hand in the permission reference space＇s granule to the iso-surface sampling,avoids the counter mapping position the massive calculations,on the other hand the iso-surface granule distribution may by the iso-surface geometry message control,for example the surface gradient and the curvature,realizes highly effective and the accurate iso-surface expression.
出处
《广西民族大学学报（自然科学版）》
CAS
2012年第1期55-58,79,共5页
Journal of Guangxi Minzu University ：Natural Science Edition
关键词
粒子系统
高阶有限元
可视化
等值面
Particle Systems
Higher order finite element
Visualization
Iso-surface
