.
Art-Based Rendering of Fur, Grass, and Trees
Michael A. Kowalski, Lee Markosian, J.D. Northrup, Lubomir D. Bourdev, Ronen Barzel, Loring S. Holden, John F. Hughes.
Proceedings of Siggraph 99,
1999. [BibTeX]
Real-Time Nonphotorealistic Rendering
Lee Markosian, Michael A. Kowalski, Samuel J. Trychin, Lubomir D. Bourdev, Daniel Goldstein, John F. Hughes.
ACM Siggraph 97, Annual Conference Series 1997, pp. 415--420, August,
1997. [BibTeX]
Rendering Nonphotorealistic Strokes with Temporal and Arc-length Coherence
Author(s): Lubomir D. Bourdev.
Master Thesis: Brown University, May,
1998.
[BibTeX] 
Abstract:
This system allows for rendering a silhouette of an object in a frame-to-frame coherent
way. The input to the system each frame is a set of silhouette pixels in a rendering of the object and their corresponding silhouette edges in a polygonal model (mesh) of the object. The output is a set of silhouette strokes.