Non-Photorealistic Computer Graphics Library

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Found 22 item(s) authored by "Mario Costa Sousa" .
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Article A Few Good Lines: Suggestive Drawing of 3D Models
Mario Costa Sousa, Przemyslaw Prusinkiewicz.
Computer Graphics Forum, Vol. 22, No. 3, pp. 381--390, September, 2003. [BibTeX]

Proceedings A Few Good Samples: Shape & Tone Depiction for Hermite RBF Implicits
Emilio Vital Brazil, Ives Ma\^cedo, Mario Costa Sousa, Luiz Velho, Luiz Henrique de Figueiredo.
Proceedings of the 8th International Symposium on Non-Photorealistic Animation and Rendering (NPAR'10), pp. 7--15, ACM, 2010. [BibTeX]

Technical Report Beyond Pixels: Illustration with Vector Graphics
Tobias Isenberg, Angela Brennecke, Mario Costa Sousa, M. Sheelagh T. Carpendale.
Department of Computer Science, University of Calgary, No. Technical Report 2005-804-35, Canada, December, 2005. [BibTeX]

Proceedings Breaking the Pixel Barrier
Tobias Isenberg, M. Sheelagh T. Carpendale, Mario Costa Sousa.
First Eurographics Workshop on Computational Aesthetics in Graphics, Visualization and Imaging (EGCA'05), pp. 41--48, May 18–20, Eurographics Association, 2005. [BibTeX]

PhD Thesis Computer-Generated Graphite Pencil Materials and Rendering
Mario Costa Sousa.
Department of Computing Science, University of Alberta, June, 1999. [BibTeX]

Proceedings Computer-Generated Pencil Drawing
Mario Costa Sousa, John W. Buchanan.
Skiggraph '99, 1999. [BibTeX]

Proceedings Depicting Shape Features with Directional Strokes and Spotlighting
Mario Costa Sousa, Faramarz Samavati, Meru Brunn.
Computer Graphics International (CGI'04), 2004. [BibTeX]

Article Fluid-based hatching for tone mapping in line illustrations
Afonso Paiva, Emilio Vital Brazil, Fabiano Petronetto, Mario Costa Sousa.
The Visual Computer, Vol. 25, No. 5-7, pp. 519--527, May, 2009. [BibTeX]

Proceedings Illustrating Terrains using Direction of Slope and Lighting

Author(s): Kevin Buchin, Mario Costa Sousa, Jürgen Döllner, Faramarz Samavati, Maike Walther.
Proceedings: 4th ICA Mountain Cartography Workshop, Vall de Núria, Catalunya, Spain, 30th September - 2nd. October 2004, 2004.
[BibTeX] Find this paper on Google

Landscape illustrations and cartographic maps depict terrain surface in a qualitatively effective way. In this paper, we present a framework for line drawing techniques for automatically reproducing traditional illustrations of terrain by means of slope lines and tonal variations. Given a digital elevation model, surface measures are computed and slope lines of the terrain are hierarchically traced and stored. At run-time slope lines are rendered by stylized procedural and texture-based strokes. The stroke density of the final image is determined according to the light intensities. Using a texture based approach, the line drawing pipeline is encapsulated from the rendering of the terrain geometry. Our system operates on terrain data at interactive rates while maintaining frame-to-frame coherence.

Proceedings Modeling Plant Structures Using Concept Sketches
Fabricio Anastacio, Mario Costa Sousa, Faramarz Samavati, Joaquim A. Jorge.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 105--113, New York, NY, USA, June, ACM Press, 2006. [BibTeX]

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