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unilogo Universität Stuttgart
Institut für Visualisierung und Interaktive Systeme

Joachim E. Vollrath

 

Universität Stuttgart
Visualisierungsinstitut der Universität Stuttgart (VISUS)
Nobelstrasse 15
70569 Stuttgart
Germany
Tel: +49 (0)711 7816-403
Fax: +49 (0)711 7816-213
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Research
Imagery
Teaching
Advised theses
Publications
   Research     
  • Feature extraction in tensor fields
  • Isocontouring on higher order finite element meshes
  • Identification, extraction and visualization of flow features, such as vortex core lines.
  • Visualiation of large and/or time-varying volume vatasets
  • Software development for commercial flow visualization tools, in collaboration with science-computing ag, Tübingen
  • Volume rendering on adaptive cartesian grids (AMR)

   Imagery     
Current research: feature extraction in tensor fields. Images are from the final thesis project of my student Marcel Hlawatsch.

Point cloud rendering for isocontouring in higher order finite element meshes, from the publication A Fast GPU Particle System Approach for Isocontouring on hp-Adaptive Finite Element Meshes.

Vortex core line extraction in flows, from the publication Topology-Preserving lambda2-based Vortex Core Line Detection for Flow Visualization.

Direct volume rendering and isosurface raycasting in PowerVIZ, from the publication Employing Complex GPU Data Structures for the Interactive Visualization of Adaptive Mesh Refinement Data.

High quality volume renderings from the publication A Generic Software Framework for the GPU Volume Rendering Pipeline. Full source code of this application is available below.
   Teaching     
Summer Term '08
Winter Term '07/'08
Summer Term '07
Winter Term '06/'07
Summer Term '06
   Advised and ongoing student theses     
   Publications     
2008
C. A. Pagot, J. E. Vollrath, J. L. D. Comba, D. Weiskopf.
A Fast GPU Particle System Approach for Isocontouring on hp-Adaptive Finite Element Meshes.
IEEE VisWeek 2008
October 19-24 in Columbus, Ohio, USA
to appear
[ps]   |   [pdf]   |   [bibtex]
T. Schafhitzel, J. Vollrath, J. Gois, D. Weiskopf, A. Castelo, T. Ertl.
Topology-Preserving lambda2-based Vortex Core Line Detection for Flow Visualization.
EG/IEEE TCVG Symposium on Visualization (EUROVIS '08)
May 26-28 in Eindhoven, The Netherlands
[ps]   |   [pdf]   |   [bibtex]
2006
GPU AMR Visualization J. E. Vollrath, T. Schafhitzel, and T. Ertl.
Employing Complex GPU Data Structures for the Interactive Visualization of Adaptive Mesh Refinement Data.
International Workshop on Volume Graphics (VG'06)
Boston, Massachusetts, U.S.A., pp. 55-58, 2006
[ps]   |   [pdf]   |   [bibtex]
2005
HQVolRen J. E. Vollrath, D. Weiskopf, and T. Ertl.
A Generic Software Framework for the GPU Volume Rendering Pipeline
VISION, MODELING, AND VISUALIZATION 2005 (VMV'05)
Erlangen, Bavaria, Germany, pp. 391-398, 2005
[pdf]   |   [bibtex]
full source code (req. DX9 SDK)   |   head dataset   |   engine dataset   |   foot dataset   |   bonsai dataset   |   more datasets