Semantic Screen-Space Occlusion for Multiscale Molecular Visualization

Information

• Publication Type: Bachelor Thesis
• Workgroup(s)/Project(s):
  • Visual Computing: Illustrative Visualization
• Date: January 2018
• Date (Start): 6. July 2017
• Date (End): 1. January 2018
• Matrikelnummer: 01526232
• First Supervisor: Ivan Viola
• Second Supervisor: David Kouřil

Abstract

When visualizing large biological data sets the problem of visual clutter arises. This problem is often counteracted with level of detail schemes and appropriate coloring of the visualized structures. Ambient occlusion and shadows are often used in order to improve the depth perception which however promote visual clutter when used excessively. In this work an approach is explored to utilize screen-space shading techniques to reduce the visual clutter by using hierarchy information that is provided with molecular models. This is achieved by selectively applying screen-space shading techniques based on the semantics of the visualized hierarchically structured data. This technique is demonstrated by implementing a hierarchy-aware version of screen-space directional occlusion and screen-space ray traced shadows into Marion, an interactive rendering system to visualize biological data.

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BibTeX

@bachelorsthesis{koch-2018-sso,
  title =      "Semantic Screen-Space Occlusion for Multiscale Molecular
               Visualization",
  author =     "Thomas Bernhard Koch",
  year =       "2018",
  abstract =   "When visualizing large biological data sets the problem of
               visual clutter arises. This problem is often counteracted
               with level of detail schemes and appropriate coloring of the
               visualized structures. Ambient occlusion and shadows are
               often used in order to improve the depth perception which
               however promote visual clutter when used excessively. In
               this work an approach is explored to utilize screen-space
               shading techniques to reduce the visual clutter by using
               hierarchy information that is provided with molecular
               models. This is achieved by selectively applying
               screen-space shading techniques based on the semantics of
               the visualized hierarchically structured data. This
               technique is demonstrated by implementing a hierarchy-aware
               version of screen-space directional occlusion and
               screen-space ray traced shadows into Marion, an interactive
               rendering system to visualize biological data.",
  month =      jan,
  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/2018/koch-2018-sso/",
}