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A Developer's Guide to Silhouette Algorithms for Polygonal Models
Author(s): Tobias Isenberg, Bert Freudenberg, Nick Halper, Stefan Schlechtweg, Thomas Strothotte.
Article: IEEE Computer Graphics and Applications, Vol. 23, No. 4, pp. 28--37, July/August,
2003.
[BibTeX] 
Abstract:
Generating object silhouettes lies at the heart of nonphotorealism and is needed for many styles of rendering. This article describes, categorizes, discusses, and recommends algorithms for computing the silhouette of a polygonal model, thus guiding developers to the optimal approach for their specific needs.
Game Programming Gems 4
Bert Freudenberg, Maic Masuch, Thomas Strothotte.
Andrew Kirmse, Real-Time Halftoning: Fast and Simple Stylized Shading, pp. 443--440, Charles River Media,
2004. [BibTeX]
Non-Photorealistic Shading in an Educational Game Engine
Bert Freudenberg, Maic Masuch.
Production Process of 3D Computer Graphics Applications - Structures, Roles and Tools, Snowbird, Utah, USA, June 1 - 4,
2002. [BibTeX]
OPENNPAR: A System for Developing, Programming, and Designing Non-Photorealistic Animation and Rendering
Nick Halper, Tobias Isenberg, Felix Ritter, Bert Freudenberg, Oscar E. Meruvia Pastor, Stefan Schlechtweg, Thomas Strothotte.
11th Pacific Conference on Computer Graphics and Applications (PG'03), pp. 424, Canmore, Canada,
2003. [BibTeX]
Real-Time Animated Stippling
Oscar E. Meruvia Pastor, Bert Freudenberg, Thomas Strothotte.
IEEE Computer Graphics and Applications, Vol. 23, No. 4, pp. 62-68,
2003. [BibTeX]
Real-Time Halftoning: A Primitive For Non-Photorealistic Shading
Bert Freudenberg, Maic Masuch, Thomas Strothotte.
Eurographics Workshop on Rendering, pp. 1–4,
2002. [BibTeX]
Real-Time Stroke Textures
Bert Freudenberg.
Technical Sketch presented at SIGGRAPH 2001,
2001. [BibTeX]
Real-Time Stroke-Based Halftoning
Bert Freudenberg.
Otto-von-Guericke-Universität, Magdeburg,
2003. [BibTeX]
Subdivision for Line Drawings
Bert Freudenberg.
2001. [BibTeX]
The Computer-Visualistik-Raum: veritable and inexpensive presentation of a virtual reconstruction
Bert Freudenberg, Maic Masuch, Niklas Röber, Thomas Strothotte.
Proceedings of the 2001 conference on Virtual reality, archeology, and cultural heritage (VAST '01), pp. 97--102,
2001. [BibTeX]