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Style Transfer Functions for Illustrative Volume Rendering

S. Bruckner and M. E. Gröller

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.

S. Bruckner and M. E. Gröller, "Style Transfer Functions for Illustrative Volume Rendering," Computer Graphics Forum, vol. 26, iss. 3, p. 715–724, 2007. doi:10.1111/j.1467-8659.2007.01095.x
[BibTeX]

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.
@ARTICLE {Bruckner-2007-STF,
author = "Stefan Bruckner and Meister Eduard Gr{\"o}ller",
title = "Style Transfer Functions for Illustrative Volume Rendering",
journal = "Computer Graphics Forum",
year = "2007",
volume = "26",
number = "3",
pages = "715--724",
month = "sep",
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.",
pdf = "pdfs/Bruckner-2007-STF.pdf",
images = "images/Bruckner-2007-STF.jpg",
thumbnails = "images/Bruckner-2007-STF.png",
youtube = "https://www.youtube.com/watch?v=40SdXa7aAjI",
note = "Eurographics 2007 3rd Best Paper Award",
affiliation = "tuwien",
doi = "10.1111/j.1467-8659.2007.01095.x",
event = "Eurographics 2007",
keywords = "illustrative visualization, transfer functions, volume rendering",
location = "Prague, Czech Republic",
url = "//www.cg.tuwien.ac.at/research/publications/2007/bruckner-2007-STF/"
}
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