Abstract In the visualization of time-dependent 2D vector fields, closed streamlines detection was dependent on grid and could not locate closed streamline accurately.

• 摘要分析与时间相关二维矢量场可视化的拓扑法，并针对其在检测封闭流线时依赖网格以及不能对封闭流线精确定位的问题，进行改进。