摘要
为了解决三维矢量场可视化中流线数量过多造成的遮挡与视觉混乱问题,同时保证流线能够准确描述矢量场变化规律与重要特征,提出了一种基于特征保持的视点相关三维矢量场流线简化方法。采用粒子跟踪生成3D矢量场流线集,并进行视点相关映射;对流线集进行特征保持计算;基于流线视觉效果度量对流线集进行迭代简化计算,从而实现流线集的有效简化。实验结果表明,能够有效保持矢量场的物理特征,且具有较好的流线视觉效果。
The streamline method is an important method in the visualization of 3D vector fields.A view-dependent streamline simplification method for 3D vector fields based on feature-preservation was proposed to solve the problems of streamline occlusion and visual confusion caused by excessive streamlines,and to ensure the streamlines could present the variation law and important features of vector fields exactly.A streamline set of 3D vector fields was generated by particle tracking and was mapped between view-dependents.A feature-preservation computation of the streamline set was implemented.The streamline set is effectively simplified by computing visual effect metric based on iteration.Experimental results show that the visual effects of the streamlines are enhanced on the basis of valid feature-preservation of vector fields.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2014年第5期124-130,共7页
Journal of National University of Defense Technology
基金
国家部委资助项目
关键词
三维矢量场
流线简化
特征保持
视点相关
3D vector fields
streamline simplification
feature-preservation
view-dependent
