.
An Illustration Technique Using Hardware-Based Intersections and Skeletons
Oliver Deussen, Jörg Hamel, Andreas Raab, Stefan Schlechtweg, Thomas Strothotte.
Graphics Interface (GI'99), pp. 175--182,
1999. [BibTeX]
Beyond Stippling - Methods for Distributing Objects on the Plane
Stefan Hiller, Heino Hellwig, Oliver Deussen.
Computer Graphics Forum, Vol. 22, No. 3, September,
2003. [BibTeX]
Computer-Generated Pen-and-Ink Illustration of Trees
Author(s): Oliver Deussen, Thomas Strothotte.
Proceedings: SIGGRAPH 00,
2000.
[BibTeX] 
Abstract:
We present a method for automatically rendering pen-and-ink illustrations
of trees. A given 3-d tree model is illustrated by the tree
skeleton and a visual representation of the foliage using abstract
drawing primitives. Depth discontinuities are used to determine
what parts of the primitives are to be drawn; a hybrid pixel-based
and analytical algorithm allows us to deal efficiently with the complex
geometric data. Using the proposed method we are able to
generate illustrations with different drawing styles and levels of abstraction.
The illustrations generated are spatial coherent, enabling
us to create animations of sketched environments. Applications of
our results are found in architecture, animation and landscaping.
Floating Points: A Method for Computing Stipple Drawings
Oliver Deussen, Stefan Hiller, Cornelius Overveld, Thomas Strothotte.
Computer Graphics Forum (EG'00), Vol. 19, No. 3, pp. 40--51,
2000. [BibTeX]
Image Enhancement by Unsharp Masking the Depth Buffer
Thomas Luft, Carsten Colditz, Oliver Deussen.
ACM Transactions on Graphics (Proc. of SIGGRAPH'06), Vol. 25, No. 3, pp. 1206--1213, July,
2006. [BibTeX]
Interactive Watercolor Animations
Thomas Luft, Oliver Deussen.
13th Pacific Conference on Computer Graphics and Applications (PG'05), Macau, October 12-14th,
2005. [BibTeX]
Non-Photorealistic Real-Time Rendering of Characteristic Faces
Thomas Luft, Oliver Deussen.
12th Pacific Conference on Computer Graphics and Applications (PG'04),
2004. [BibTeX]
Real-Time Pen-and-Ink Illustration of Landscapes
Liviu Coconu, Oliver Deussen, Hans-Christian Hege.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 27--35, New York, NY, USA, ACM Press,
2006. [BibTeX]
Real-Time Watercolor for Animation
Thomas Luft, Oliver Deussen.
Journal of Computer Science and Technology, Vol. 21, No. 2, pp. 159--165, March,
2006. [BibTeX]
Real-Time Watercolor Illustrations of Plants Using a Blurred Depth Test
Thomas Luft, Oliver Deussen.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 11--20, New York, NY, USA, June, ACM Press,
2006. [BibTeX]