Visual analysis and steering of flooding simulations

Hrvoje Ribičić, Jürgen Waser, Raphael Fuchs, Günter Blöschl, Meister Eduard Gröller
Visual analysis and steering of flooding simulations
IEEE Transaction on Visualization and Computer Graphics, PP(99), 2012.

Information

Abstract

We present a visualization tool for the real-time analysis of interactively steered ensemble-simulation runs, and apply it to flooding simulations. Simulations are performed on-the-fly, generating large quantities of data. The user wants to make sense of the data as it is created. The tool facilitates understanding: of what happens in all scenarios, where important events occur and how simulation runs are related. We combine different approaches to achieve this goal. To maintain an overview, data is aggregated and embedded into the simulation rendering, showing trends, outliers, and robustness. For a detailed view, we use information-visualization views and interactive visual analysis techniques. A selection mechanism connects the two approaches. Points of interest are selected by clicking on aggregates, supplying data for visual analysis. This allows the user to maintain an overview of the ensemble and perform analysis even as new data is supplied through simulation steering. Unexpected or unwanted developments are detected easily, and the user can focus the exploration on them. The solution was evaluated with two case studies focusing on placing and testing flood defense measures. Both were evaluated by a consortium of flood simulation and defense experts, who found the system to be both intuitive and relevant.

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BibTeX

@article{Ribicic_2012_VAS,
  title =      "Visual analysis and steering of flooding simulations",
  author =     "Hrvoje Ribi\v{c}i{'c} and J{"u}rgen  Waser and Raphael Fuchs
               and G{"u}nter Bl{"o}schl and Meister Eduard Gr{"o}ller",
  year =       "2012",
  abstract =   "We present a visualization tool for the real-time analysis
               of interactively steered ensemble-simulation runs, and apply
               it to flooding simulations. Simulations are performed
               on-the-fly, generating large quantities of data. The user
               wants to make sense of the data as it is created. The tool
               facilitates understanding: of what happens in all scenarios,
               where important events occur and how simulation runs are
               related. We combine different approaches to achieve this
               goal. To maintain an overview, data is aggregated and
               embedded into the simulation rendering, showing trends,
               outliers, and robustness. For a detailed view, we use
               information-visualization views and interactive visual
               analysis techniques. A selection mechanism connects the two
               approaches. Points of interest are selected by clicking on
               aggregates, supplying data for visual analysis. This allows
               the user to maintain an overview of the ensemble and perform
               analysis even as new data is supplied through simulation
               steering. Unexpected or unwanted developments are detected
               easily, and the user can focus the exploration on them. The
               solution was evaluated with two case studies focusing on
               placing and testing flood defense measures. Both were
               evaluated by a consortium of flood simulation and defense
               experts, who found the system to be both intuitive and
               relevant.",
  journal =    "IEEE Transaction on Visualization and Computer Graphics",
  number =     "99",
  volume =     "PP",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2012/Ribicic_2012_VAS/",
}