Estimating Color and Texture Parameters for Vector Graphics

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• Publication Type: Journal Paper with Conference Talk
• Date (from): 11.04.2011
• Date (to): 15.04.2011
• Event: Eurographics 2011
• ISSN: 0167-7055
• Lecturer: Stefan Jeschke
• Location: Llandudno (Wales, UK)
• Note: This paper won the 2nd best paper award at Eurographics 2011.

@article\{jeschke-2011-est,
  title =      "Estimating Color and Texture Parameters for Vector Graphics",
  author =     "Stefan Jeschke and David Cline and Peter Wonka",
  year =       "2011",
  abstract =   "Diffusion curves are a powerful vector graphic
               representation that stores an image as a set of 2D Bezier
               curves with colors defined on either side. These colors are
               diffused over the image plane, resulting in smooth color
               regions as well as sharp boundaries. In this paper, we
               introduce a new automatic diffusion curve coloring
               algorithm. We start by defining a geometric heuristic for
               the maximum density of color control points along the image
               curves. Following this, we present a new algorithm to set
               the colors of these points so that the resulting diffused
               image is as close as possible to a source image in a least
               squares sense. We compare our coloring solution to the
               existing one which fails for textured regions, small
               features, and inaccurately placed curves. The second
               contribution of the paper is to extend the diffusion curve
               representation to include texture details based on Gabor
               noise. Like the curves themselves, the defined texture is
               resolution independent, and represented compactly. We define
               methods to automatically make an initial guess for the noise
               texure, and we provide intuitive manual controls to edit the
               parameters of the Gabor noise. Finally, we show that the
               diffusion curve representation itself extends to storing any
               number of attributes in an image, and we demonstrate this
               functionality with image stippling an hatching applications.",
  pages =      "523--532",
  month =      apr,
  number =     "2",
  note =       "This paper won the 2nd best paper award at Eurographics
               2011.",
  event =      "Eurographics 2011",
  issn =       "0167-7055",
  journal =    "Computer Graphics Forum",
  volume =     "30",
  location =   "Llandudno (Wales, UK)",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/",
}