Sketch-Based Steering in Visdom

Information

• Publication Type: Master Thesis
• Workgroup(s)/Project(s):
  • Visualization Group
• Date: November 2011
• First Supervisor:
  • Eduard Gröller
  • Jürgen Waser

Abstract

Natural phenomena like earthquakes or floods cannot be avoided or controlled by humans but ignoring them can be fatal. In order to understand their characteristics and behavior computer simulations can be used. The gained knowledge is used to find strategies and countermeasures to minimize the damage caused by such disasters. Visdom is a modular integrated visualization system which is developed to support the analysis of flood simulations. It provides the ability to test different decisions made by the user for example the establishment of barrier arrangements. These alternative scenarios can be visualized and analyzed in order to find the solution which minimizes damage in the vicinity. For modifying the flood, the simulation parameters have to be varied. In Visdom, this has to be done by inserting numeric values into textfields or using sliders. In most cases, the system is intended to be used in time-critical situations where fast interaction and testing is required. Therefore a sketch-based interface is introduced into Visdom which should simplify and accelerate the modification of simulation parameters. This kind of interaction increases the productivity and efficiency of the whole work-flow due to its intuitive and straightforward usage. Since Visdom is based on a modular data-flow system, the new functionality is implemented within a new node. The so-called Spline Node provides methods to create and manipulate a spline. It requires the drawn user input points which are captured by a view node. Due to the fact that Visdom is based on the data-flow concept, a new mechanism called Modular Interactors has to be introduced to enable interaction communication between nodes especially upstream. In order to support the user during the sketching process the system provides visual feedback. The sketched stroke is represented using a tubular geometry which is directly visualized in the 3D view.

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BibTeX

@mastersthesis{Gurbat_2011_SBS,
  title =      "Sketch-Based Steering in Visdom",
  author =     "Roman Gurbat",
  year =       "2011",
  abstract =   "Natural phenomena like earthquakes or floods cannot be
               avoided or controlled by humans but ignoring them can be
               fatal. In order to understand their characteristics and
               behavior computer simulations can be used. The gained
               knowledge is used to find strategies and countermeasures to
               minimize the damage caused by such disasters. Visdom is a
               modular integrated visualization system which is developed
               to support the analysis of flood simulations. It provides
               the ability to test different decisions made by the user for
               example the establishment of barrier arrangements. These
               alternative scenarios can be visualized and analyzed in
               order to find the solution which minimizes damage in the
               vicinity. For modifying the flood, the simulation parameters
               have to be varied. In Visdom, this has to be done by
               inserting numeric values into textfields or using sliders.
               In most cases, the system is intended to be used in
               time-critical situations where fast interaction and testing
               is required. Therefore a sketch-based interface is
               introduced into Visdom which should simplify and accelerate
               the modification of simulation parameters. This kind of
               interaction increases the productivity and efficiency of the
               whole work-flow due to its intuitive and straightforward
               usage. Since Visdom is based on a modular data-flow system,
               the new functionality is implemented within a new node. The
               so-called Spline Node provides methods to create and
               manipulate a spline. It requires the drawn user input points
               which are captured by a view node. Due to the fact that
               Visdom is based on the data-flow concept, a new mechanism
               called Modular Interactors has to be introduced to enable
               interaction communication between nodes especially upstream.
               In order to support the user during the sketching process
               the system provides visual feedback. The sketched stroke is
               represented using a tubular geometry which is directly
               visualized in the 3D view.",
  month =      nov,
  address =    "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria",
  school =     "Institute of Computer Graphics and Algorithms, Vienna
               University of Technology ",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2011/Gurbat_2011_SBS/",
}