A Semi-Global Approach to Interactive Visual Analysis of Multivariate Flow Simulation Data

Martin Ilcik
A Semi-Global Approach to Interactive Visual Analysis of Multivariate Flow Simulation Data
Computer Graphics & Geometry, 10(3):18-35, 2008. [ paper] [ teaserimage]
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Abstract

We introduce a framework for interactive visualization of global flow features in large unsteady 3D flow fields. It is based on selective visualization using dense precomputed integral lines (streamlines, path lines) linked together with all other data attributes. This way we are able to provide an uniform and interactive environment for custom feature specification and visualization of non-local data aspects. These are related to the long term flow behavior, thus their description using only local properties is not possible. We demonstrate the benefits of working with semi-global features by a simple strategy for recognition of recirculation zones within 3D vector fields, judging on a self-proximity measure of integral lines.

Additional Files and Images

Additional images and videos:
image01 image01: Visualization with help of integral lines selected by a recirculation criterion. The color represents temperature.
image02 image02: A comparison of visual analysis layers: Direct, local and global. Color represents velocity magnitude.
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BibTeX

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@article{ilcik-2008-sgfa,
  title =      "A Semi-Global Approach to Interactive Visual Analysis of
               Multivariate Flow Simulation Data",
  author =     "Martin Ilcik",
  year =       "2008",
  abstract =   "We introduce a framework for interactive visualization of
               global flow features in large unsteady 3D flow fields. It is
               based on selective visualization using dense precomputed
               integral lines (streamlines, path lines) linked together
               with all other data attributes. This way we are able to
               provide an uniform and interactive environment for custom
               feature specification and visualization of non-local data
               aspects. These are related to the long term flow behavior,
               thus their description using only local properties is not
               possible. We demonstrate the benefits of working with
               semi-global features by a simple strategy for recognition of
               recirculation zones within 3D vector fields, judging on a
               self-proximity measure of integral lines.",
  pages =      "18--35",
  number =     "3",
  issn =       "1811-8992",
  journal =    "Computer Graphics & Geometry",
  volume =     "10",
  keywords =   "global features, integral lines, flow visualization,
               recirculation",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2008/ilcik-2008-sgfa/",
}