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Curvature-based stroke rendering
Author(s): Suguru Saito, Akane Kani, Youngha Chang, Masayuki Nakajima.
Article: The Visual Computer, Vol. 24, No. 1, pp. 1--11,
2008.
[BibTeX] [DOI] 
Abstract:
This paper describes an algorithm that renders lines that have various thicknesses and have sharp tapered ends. This algorithm does not require any special information on each local point of a line. The thickness is determined by curvature and lengths from both ends. Therefore the algorithm is applicable in a variety of line rendering situations, such as 3D rendering engines for high quality cel-animation-like effects, reuse of geometrical data designed by CAD for advertising purposes, edge enhancement in a photo retouching process with edge detection methods and so on. In addition, using the generated varying thicknesses, we have developed algorithms for shading and embossing effects.
Generation of Varying Line Thickness
Suguru Saito, Akane Kani, Youngha Chang, Masayuki Nakajima.
Computer Graphics International, pp. 294, Tokyo, Japan, July 09 - 11,
2003. [BibTeX]