Non-Photorealistic Computer Graphics Library

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Found 22 item(s) authored by "Tobias Isenberg" .
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Article G-strokes: A concept for simplifying line stylization
Tobias Isenberg, Angela Brennecke.
Computers & Graphics, Vol. 30, No. 5, pp. 754--766, October, 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]

In Collection Hybrid Medical Visualizations: Creation and Evaluation
Tobias Isenberg.
Course Notes of the 60th Annual AMI Conference 2005, The Association of Medical Illustrators, Mario Costa Sousa, Non-Photorealistic Rendering (NPR)---Applied Research for the Medical Illustrator, Thousand Oaks, California, USA, July 28--August 1, 2005. [BibTeX]

Proceedings Illustration Watermarks for Vector Graphics
Henry Sonnet, Tobias Isenberg, Jana Dittmann, Thomas Strothotte.
11th Pacific Conference on Computer Graphics and Applications (PG'03), Jon Rokne, Reinhard Klein, and Wenping Wang, pp. 73--82, Los Alamitos, CA, 2003. [BibTeX]

Technical Report Non-Photorealistic Rendering in Context: An Observational Study
Tobias Isenberg, Petra Neumann, M. Sheelagh T. Carpendale, Mario Costa Sousa, Joaquim A. Jorge.
Department of Computer Science, University of Calgary, No. Technical Report 2005-805-36, Canada, December, 2005. [BibTeX]

Proceedings Non-Photorealistic Rendering in Context: An Observational Study
Tobias Isenberg, Petra Neumann, M. Sheelagh T. Carpendale, Mario Costa Sousa, Joaquim A. Jorge.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 115--126, New York, NY, USA, June, ACM Press, 2006. [BibTeX]

Proceedings 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]

Technical Report Seeing Between the Strokes
Tobias Isenberg, Roland Jesse, Oscar E. Meruvia Pastor, Thomas Strothotte.
Department of Computer Science, Otto-von-Guericke University of Magdeburg, No. Technical Report 11/2004, Germany, 2004. [BibTeX]

Article Stylizing Silhouettes at Interactive Rates: From Silhouette Edges to Silhouette Strokes

Author(s): Tobias Isenberg, Nick Halper, Thomas Strothotte.
Article: Computer Graphics Forum, 2002.
[BibTeX] Find this paper on Google

Abstract:
A way to create effective stylized line drawings is to draw strokes that start and stop at visible portions along the silhouette of an object to be portrayed. In computer graphics to date, algorithms to extract silhouette edges are many, although putting these edges into a form such that stylized strokes may be applied to them has not been greatly covered, so that existing methods are either time-consuming or presented vaguely. In this paper, we introduce an algorithm that takes a set of silhouette edges originating from polygonal meshes and efficiently computes the visible parts of the edges before connecting them to form long smooth silhouette strokes to which stylization algorithms may be effectively applied. Features of our algorithm that gain efficiency and accuracy over existing methods is that we directly exploit the analytic connectivity information of the mesh in combination with the available z-buffer information during rendering, and filter artifacts in connected edges during the process to improve the visual quality of strokes after stylization.


Proceedings Use of Hybrid Rendering Styles for Presentation
Roland Jesse, Tobias Isenberg.
11th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision (WSCG), 2003. [BibTeX]

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