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Sketching Piecewise Clothoid Curves
(The Eurographics Association, 2008)
We present a novel approach to sketching 2D curves with minimally varying curvature as piecewise clothoids. A stable and efficient algorithm fits a sketched piecewise linear curve using a number of clothoid segments with ...
Sketch and Paint-based Interface for Highlight Modeling
(The Eurographics Association, 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 ...