Sketch and Paint-based Interfacefor Highlight Modeling
Résumé
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-andview
configurations, our system smoothly blends the different user-defined highlights. Based on GPU abilities, 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
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