Non-Photorealistic Computer Graphics Library

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Found 6 item(s) authored by "Luiz Velho" .

Proceedings A Few Good Samples: Shape & Tone Depiction for Hermite RBF Implicits

Author(s): Emilio Vital Brazil, Ives Ma\^cedo, Mario Costa Sousa, Luiz Velho, Luiz Henrique de Figueiredo.
Proceedings: Proceedings of the 8th International Symposium on Non-Photorealistic Animation and Rendering (NPAR'10), pp. 7--15, ACM, 2010.
[BibTeX] [DOI] Find this paper on Google

We present techniques for rendering Hermite Radial Basis Function (HRBF) Implicits in different pen-and-ink styles. HRBF Implicits is a simple and compact representation, providing three fundamental qualities: a small number of point-normal samples as input for surface reconstruction, good projection of points near the surface, and smoothness of the gradient field. Our approach uses these qualities of HRBF implicits to generate a robust distribution of points to position the drawing primitives. The resulting implicit model is then rendered using point-based primitives to depict shape and tone using silhouettes with hidden-line attenuation, drawing directions, and stippling. We present sample renderings obtained for a variety of models.

Technical Report A Lua Implementation of Image Moment-Based Painterly Rendering
Diego Nehab, Luiz Velho.
IMPA, No. TR-01-11, December, 2001. [BibTeX]

Article B-Spline Wavelet Paint
Luiz Velho, Ken Perlin.
Revista de Informatica Teorica e Aplicada (RITA), Vol. IX, No. 2, pp. 100--119, 2002. [BibTeX]

Proceedings Live Paint: Painting with Procedural Multiscale Textures
Ken Perlin, Luiz Velho.
Computer Graphics-Annual Conference Series, pp. 153-160, 1995. [BibTeX]

Proceedings Multiscale Moment-Based Painterly Rendering
Diego Nehab, Luiz Velho.
Proc. of SIBGRAPI 02 (Brazilian Symposium on Computer Graphics and Image Processing), 2002. [BibTeX]

Proceedings Stochastic Screening Dithering with Adaptive Clustering
Luiz Velho, Jonas Gomes.
Computer Graphics-Annual Conference Series, pp. 273-276, 1995. [BibTeX]

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