Non-Photorealistic Computer Graphics Library

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Found 3 item(s) authored by "Maike Walther" Find Author on Google.

In Book Hatching, Stroke Styles & Pointillism
Kevin Buchin, Maike Walther.
Wolfgang Engel, Rendering Techniques, pp. 340--347, Wordware Publishing, Vol. ShaderX2 - Shader Tips and Tricks, September, 2003. [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 Real-Time Per-Pixel Rendering With Stroke Textures
Kevin Buchin, Maike Walther.
19th Spring Conference on Computer Graphics, ACM Press, 2003. [BibTeX]

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