Priority streamlines: a context-based visualization of flow fields

  • Authors:
  • Michael Schlemmer;Ingrid Hotz;Bernd Hamann;Florian Morr;Hans Hagen

  • Affiliations:
  • Computergraphics and Visualization, University of Kaiserslautern, Germany;Konrad-Zuse-Zentrum für Informationstechnik Berlin, Germany;Institute for Data Analysis and Visualization and Department of Computer Science, University of California, Davis, CA;Computergraphics and Visualization, University of Kaiserslautern, Germany;Computergraphics and Visualization, University of Kaiserslautern, Germany

  • Venue:
  • EUROVIS'07 Proceedings of the 9th Joint Eurographics / IEEE VGTC conference on Visualization
  • Year:
  • 2007

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Abstract

Flow vector fields contain a wealth of information that needs to be visualized. As an extension of the well-known streamline technique, we have developed a context-based method for visualizing steady flow vector fields in two and three dimensions. We call our method "Priority Streamlines". In our approach, the density of the streamlines is controlled by a scalar function that can be user-defined, or be given by additional information (e.g., temperature, pressure, vorticity, velocity) considering the underlying flow vector field. In regions, which are interesting the streamlines are drawn with increased density, while less interesting regions are drawn sparsely. Since streamlines in the most important regions are drawn first, we can use thresholding to obtain a streamline representation highlighting essential features. Color-mapping and transparency can be used for visualizing other information hidden in the flow vector field.