TitleTopological Features in Glyph-Based Corotation Visualization (In Book)
inTopological Methods in Data Analysis and Visualization III - Theory, Algorithms, and Applications
Author(s) Sohail Shafii, Harald Obermaier, Bernd Hamann, Kenneth I. Joy
Keyword(s)Corotation, vortex, visualization, glyph, topology, flow
Year 2014
Abstract We introduce a novel method for vortex detection in flow fields based on the corotation of line segments and glyph rendering. The corotation measure is defined as a point-symmetric scalar function on a sphere, suitable for direct representation in the form of a three-dimensional glyph. Appropriate placement of these glyphs in the domain of a flow field makes it possible to depict vortical features present in the flow. We demonstrate how topological analysis of this novel glyph-based representation of vortex features can reveal vortex characteristics that lie beyond the capabilities of visualization techniques that consider vortex direction and magnitude information only.