.
A new form of traditional art: visual simulation of Chinese shadow play
Yi-Bo Zhu, Chen-Jia Li, I. Fan Shen, Kwan-Liu Ma, Aleksander Stompel.
SIGGRAPH 2003, Sketches & applications,
2003. [BibTeX]
Expressive Line Selection by Example
Erik Lum, Kwan-Liu Ma.
13th Pacific Conference on Computer Graphics and Applications (PG'05),
2005. [BibTeX]
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]
Illustrative Rendering Techniques for Visualization: Future of Visualization or Just Another Technique?
Dirk Bartz, Hans Hagen, Victoria Interrante, Kwan-Liu Ma, Bernhard Preim.
Proceedings of the IEEE Visualization 2005 October 23-28, Minneapolis, MN, USA (VIS'05), pp. 715--718, Los Alamitos, CA, USA, IEEE Computer Society,
2005. [BibTeX]
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] 
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.
Rendering Complexity in Computer-Generated Pen-and-Ink Illustrations
Brett Wilson, Kwan-Liu Ma.
3rd International Symposium on Non-Photorealistic Animation and Rendering (NPAR'04), pp. 129--137,
2004. [BibTeX]
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]