| 引用本文: | 孔龙星,汤晓安,李欢.特征保持的视点相关三维矢量场流线简化方法.[J].国防科技大学学报,2014,36(5):124-130.[点击复制] |
| KONG Longxing,TANG Xiaoan,LI Huan.A view-dependent streamline simplification method for 3D vector fields based on feature-preservation[J].Journal of National University of Defense Technology,2014,36(5):124-130[点击复制] |
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| 特征保持的视点相关三维矢量场流线简化方法 |
| 孔龙星, 汤晓安, 李欢 |
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(国防科技大学 电子科学与工程学院， 湖南 长沙 410073)
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| 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。 |
| 关键词: 三维矢量场 流线简化 特征保持 视点相关 |
| DOI：10.11887/j.cn.201405021 |
| 投稿日期：2014-03-24 |
| 基金项目:国家部委资助项目 |
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| A view-dependent streamline simplification method for 3D vector fields based on feature-preservation |
| KONG Longxing, TANG Xiaoan, LI Huan |
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(College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| 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. |
| Keywords: 3D vector fields streamline simplification feature-preservation view-dependent |
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