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Sketch and Paint-based Interface for Highlight Modeling

Romain Pacanowski, Xavier Granier, Christophe Schlick, and Pierre Poulin
Proc. Eurographics Workshop on Sketch-based Interfaces and Modeling 2008, June 2008


In computer graphics, highlights capture much of the appearance of light reflection off a surface. They are generally limited to pre-defined models (e.g., Phong, Blinn) or to measured data. In this paper, we introduce new tools and a corresponding highlight model to provide computer graphics artists a more expressive approach to design highlights. For each defined light key-direction, the artist simply sketches and paints the main highlight features (shape, intensity, and color) on a plane oriented perpendicularly to the reflected direction. For other light-and-view configurations, our system smoothly blends the different user-defined highlights. Based on GPU cabilities, our solution allows real-time editing and feedback. We illustrate our approach with a wide range of highlights, with complex shapes and varying colors. This solution also demonstrates the simplicity of introduced tools.


Expressive highlights, vectorial representation, highlight interpolation, specular reflection, GPU.

BibTeX entry

  title     = "Sketch and Paint-based Interface for Highlight Modeling",
  author    = "Romain Pacanowski and Xavier Granier and Christophe Schlick and Pierre Poulin",
  booktitle = "Eurographics Workshop on Sketch-based Interfaces and Modeling 2008",
  year      = 2008,
  month     = jun,
  pages     = "17--23"

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