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计算机工程 ›› 2009, Vol. 35 ›› Issue (3): 263-265,. doi: 10.3969/j.issn.1000-3428.2009.03.090

• 开发研究与设计技术 • 上一篇    下一篇

拓扑分析在海洋特征提取中的应用

薛红娟,顾耀林   

  1. (江南大学信息工程学院,无锡 214122)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-02-05 发布日期:2009-02-05

Application of Topological Analysis in Ocean Feature Extraction

XUE Hong-juan, GU Yao-lin   

  1. (School of Information Engineering, Jiangnan University, Wuxi 214122)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-02-05 Published:2009-02-05

摘要: 针对庞大复杂的海洋数据流场,利用三维标量场的拓扑分析方法,对海洋目标水团进行提取,达到特征可视化的目的。结合Morse理论对流形构造Morse-Smale复形,实现区域内水团的自动划分,并通过删除复形上的一系列临界点对对初始水团进行合并处理。实验结果验证了该方法的可行性和高效性。

关键词: 三维标量场, Morse理论, Morse-Smale复形, 特征可视化

Abstract: For large and complex flow data such as ocean flow field, it is nearly impossible to visualize the whole information it contains. This paper introduces a topological simplification of 3D scalar fields for extracting water mass, and realizes the feature-based visualization. Based on the morse theory, this method constructs Morse-Smale complex over the important subregions to depart the water mass automatically, and repeatedly removes a pair of critical points from the complex to realize the combination of the initial water massm. The experiment verifies the feasibility and efficiency of the method.

Key words: 3D scalar field, Morse theory, Morse-Smale complex, feature-based visualization

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