基于物理特征的平面流场拓扑简化算法

Topological Simplification of Planar Vector Fields Based on Physical Feature

基于网格合并思想实现的平面流场拓扑简化,存在物理特征被忽略和并行实现困难的问题,难以满足远程可视化的要求。文中提出1种基于物理特征的平面流场拓扑简化算法。算法通过计算生成平面流场的物理特征参数图像,利用图像分割提取平面流场的特征区域达到流场简化的目的。实验结果表明,算法能从物理特征和宏观的角度出发快速、准确描述平面流场的拓扑结构,为平面流场可视化提供了1种新方法。

The physical feature preserving will be ignored and difficult for parallel implementing when to- pological simplification of planar flow field by merging the grid. It could not satisfy the real-time require- ment for remote visualization. The paper will introduce a topological simplification of planar flow field based on physical feature completely. By creating the physical feature filter of planar flow field, it gains the physical feature parameter image and attains topological simplification by extracting feature regions with image segmentation. The method is easy for parallel implement. The results show that it can get the entire topological structure quickly and accurately from the view of physical feature. It may be a new method for dealing with large-scale planar flow field.