Non-Photorealistic Computer Graphics Library

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Found 18 item(s) authored by "Stefan Schlechtweg" .
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Article A Developer's Guide to Silhouette Algorithms for Polygonal Models
Tobias Isenberg, Bert Freudenberg, Nick Halper, Stefan Schlechtweg, Thomas Strothotte.
IEEE Computer Graphics and Applications, Vol. 23, No. 4, pp. 28--37, July/August, 2003. [BibTeX]

Proceedings An Approach to Visualizing Transparency in Computer-Generated Line Drawings
Jörg Hamel, Stefan Schlechtweg, Thomas Strothotte.
IV'98, 1998. [BibTeX]

Proceedings 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]

Proceedings Animating Frame-To-Frame-Coherent Line Drawings for Illustrated Purposes
Maic Masuch, Lars Schumann, Stefan Schlechtweg.
Proceedings of Simulation und Visualisierung '98, SCS Europe, Peter Lorenz, Bernhard Preim, pp. 101-112, 1998. [BibTeX]

Technical Report Creating High Quality Hatching Illustrations

Author(s): Johannes Zander, Tobias Isenberg, Stefan Schlechtweg, Thomas Strothotte.
Technical Report: Department of Computer Science, Otto-von-Guericke University of Magdeburg, No. 12/2004, Germany, 2004.
[BibTeX] Find this paper on Google

Abstract:
Hatching lines are often used in line illustrations to convey tone and texture of a surface. In this report an approach for rendering hatched line drawings for polygonal meshes is presented.The proposed method allows the generation of hatching lines for interactive on-screen display as well as for vector-based printer output.We use local curvature information to compute streamlines on the surface of the model. A new algorithm ensures here an even distribution of the streamlines such that the visual quality of the final rendition is enhanced.These streamlines form the basis for the calculation of hatching lines. Line shading methods in general are presented that adapt the drawing to lighting conditions. To achieve interactive frame-rates the shading of the hatching lines is calculated at run-time using a virtual machine. For printer output a vector oriented format is generated.

Proceedings Creating Non-Photorealistic Images the Designer’s Way
Nick Halper, Stefan Schlechtweg, Thomas Strothotte.
2nd International Symposium on Non-Photorealistic Animation and Rendering (NPAR'02), Annecy, France, June 3-5, 2002. [BibTeX]

Proceedings daLi! - Drawing Animated Lines!
Maic Masuch, Stefan Schlechtweg, Bert Schönwälder.
Simulation and Animation '97, pp. 87--95, SCS Europe, Magdeburg, 1997. [BibTeX]

Proceedings Enhancing Slice-based Visualizations of Medical Volume Data
Christian Tietjen, Björn Meyer, Stefan Schlechtweg, Bernhard Preim, Ilka Hertel, Gero Strauß.
IEEE/Eurographics Symposium on Visualization (EUROVIS'06), pp. 123-130, IEEE, 2006. [BibTeX]

Article High Quality Hatching
Johannes Zander, Tobias Isenberg, Stefan Schlechtweg, Thomas Strothotte.
Computer Graphics Forum (EG'04), Vol. 23, No. 3, pp. 421--430, September, 2004. [BibTeX]

Proceedings Icon-Based Visualization Using Mosaic Metaphors
Thomas Nocke, Stefan Schlechtweg, Heidrun Schumann.
Ninth International Conference on Information Visualisation (IV'05), pp. 103--109, 2005. [BibTeX]

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