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Illustrative rendering of vortex cores
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SYSNO ASEP 0394873 Document Type C - Proceedings Paper (int. conf.) R&D Document Type The record was not marked in the RIV Title Illustrative rendering of vortex cores Author(s) Shafii, S. (US)
Obermaier, H. (US)
Kolář, Václav (UH-J) SAI, ORCID, RID
Hlawitschka, M. (DE)
Garth, C. (DE)
Hamann, B. (US)
Joy, K. I. (US)Number of authors 7 Source Title Eurographics Conference on Visualization (EuroVis 2013) Short Papers. - Leipzig : The Eurographics Association, 2013 / Hlawitschka M. ; Weinkauf T. Number of pages 5 s. Publication form Online - E Action Eurographics Conference on Visualization (EuroVis 2013) Event date 17.06.2013-21.06.2013 VEvent location Leipzig Country DE - Germany Event type WRD Language eng - English Country DE - Germany Keywords flow visualization ; vortices ; illustrative rendering Subject RIV BK - Fluid Dynamics Institutional support UH-J - RVO:67985874 Annotation Vortices are features crucial for understanding transitional and turbulent flow fields, and have often been visualized using isosurfaces, hulls, and line-like structures. However, they have not been represented in a non-photorealistic manner that intuitively reflects their local characteristics. We introduce a novel visualization method that represents these features as illustrative vortex cores, and show how this illustrative method clearly depicts vortex properties such as direction, rotational strength, spatial extension, and underlying flow behavior simultaneously, in a fashion superior to standard visualization approaches. Our non-photorealistic visualizations leverage the axis and rotational properties of a vortex detector to depict the direction and the rotational strength of vortices, respectively. Furthermore, we extract flow behavior in the vicinity of the vortex cores to provide context for the vortices that we extract. We demonstrate the efficacy of our illustrative vortex extraction framework in two commonly used data sets by showing how they characterize the properties of the examined flow fields. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2014
Number of the records: 1