Style Transfer Functions for Illustrative Volume Rendering

Stefan Bruckner, Meister Eduard Gröller
Style Transfer Functions for Illustrative Volume Rendering
Computer Graphics Forum, 26(3):715-724, September 2007. [ Paper]
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Also available in TR-186-2-07-02.

Abstract

Illustrative volume visualization frequently employs non-photorealistic rendering techniques to enhance important features or to suppress unwanted details. However, it is difficult to integrate multiple non-photorealistic rendering approaches into a single framework due to great differences in the individual methods and their parameters. In this paper, we present the concept of style transfer functions. Our approach enables flexible data-driven illumination which goes beyond using the transfer function to just assign colors and opacities. An image-based lighting model uses sphere maps to represent non-photorealistic rendering styles. Style transfer functions allow us to combine a multitude of different shading styles in a single rendering. We extend this concept with a technique for curvature-controlled style contours and an illustrative transparency model. Our implementation of the presented methods allows interactive generation of high-quality volumetric illustrations.

Additional Files and Images

Additional images and videos:
Human Head Human Head: Illustrative volume rendering of a human head using style transfer functions
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Video Video: Demonstration video
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BibTeX

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@article{bruckner-2007-STF,
  title =      "Style Transfer Functions for Illustrative Volume Rendering",
  author =     "Stefan Bruckner and Meister Eduard Gr{\"o}ller",
  year =       "2007",
  abstract =   "Illustrative volume visualization frequently employs
               non-photorealistic rendering techniques to enhance important
               features or to suppress unwanted details. However, it is
               difficult to integrate multiple non-photorealistic rendering
               approaches into a single framework due to great differences
               in the individual methods and their parameters. In this
               paper, we present the concept of style transfer functions.
               Our approach enables flexible data-driven illumination which
               goes beyond using the transfer function to just assign
               colors and opacities. An image-based lighting model uses
               sphere maps to represent non-photorealistic rendering
               styles. Style transfer functions allow us to combine a
               multitude of different shading styles in a single rendering.
               We extend this concept with a technique for
               curvature-controlled style contours and an illustrative
               transparency model. Our implementation of the presented
               methods allows interactive generation of high-quality
               volumetric illustrations.",
  pages =      "715--724",
  month =      sep,
  number =     "3",
  note =       "Eurographics 2007 3rd Best Paper Award",
  event =      "Eurographics 2007",
  journal =    "Computer Graphics Forum",
  volume =     "26",
  location =   "Prague, Czech Republic",
  keywords =   "illustrative visualization, transfer functions, volume
               rendering",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2007/bruckner-2007-STF/",
}