Application of Topological Analysis in Ocean Feature Extraction
GU Yao-lin · Jisuanji gongcheng · 2009
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.