Non-Photorealistic Computer Graphics Library

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Found 4 item(s) authored by "Erik Lum" Find Author on Google.

Proceedings Expressive Line Selection by Example
Erik Lum, Kwan-Liu Ma.
13th Pacific Conference on Computer Graphics and Applications (PG'05), 2005. [BibTeX]

Proceedings Hardware-Accelerated Parallel Non-Photorealistic Volume Rendering
Erik Lum, Kwan-Liu Ma.
2nd International Symposium on Non-Photorealistic Animation and Rendering (NPAR'02), Annecy, France, June 3-5, 2002. [BibTeX]

Proceedings Non-Photorealistic Rendering using Watercolor Inspired Textures and Illumination

Author(s): Erik Lum, Kwan-Liu Ma.
Proceedings: 9th Pacific Conference on Computer Graphics and Applications (PG'01), October 16-18, 2001.
[BibTeX] Find this paper on Google

Abstract:
In this paper, we present a watercolor inspired method for the rendering of surfaces. Our approach mimics the watercolor process by building up an illuminated scene through the compositing of several layers of semitransparent paint. The key steps consist of creating textures for each layer using LIC of Perlin Noise, and then calculating the layer thickness distribution using an inverted subtractive lighting model. The resulting watercolor-style images have color coherence that results from the mixing of a limited palette of paints. The new lighting model helps to better convey large shape changes, while texture orientations give hints of less dominant features. The rendered images therefore possess perceptual clues to more effectively communicate shape and texture information.

Proceedings Visualization of Multidimensional, Multivariate Volume Data Using Hardware-Accelerated Non-Photorealistic Rendering Techniques
Aleksander Stompel, Erik Lum, Kwan-Liu Ma.
10th Pacific Conference on Computer Graphics and Applications (PG'02), pp. 394, Tsinghua University, Beijing, October 09 - 11, 2002. [BibTeX]

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