OpenNPAR: A System for Developing, Programming, and Designing Non-Photorealistic Animation and Rendering

Description:

The notable amount and variation of current techniques in non-photorealistic rendering (NPR) indicates a level of maturity whereby the categorization of algorithms has become possible. We present a conceptual model for NPR, on which we base a modular system, OpenNPAR, which integrates NPR algorithms into distinct classes. Components in OpenNPAR are modularized and consequently reintegrated for various rendering purposes, allowing many kinds of NPR algorithms to be reproduced, including the integration of 2D and 3D methods. Additionally, the system provides support for a range of users (developers, programmers, designers) according to their respective levels of abstraction, thus being available in multiple contexts. Ultimately, OpenNPAR holds great potential as a tool in the development, augmentation, and creation of NPR effects.

Paper download: (641 KB); (extended but unpublished version, 3.1 MB)

!!!Videos:

OpenNPAR videos:

Download the video as AVI (13.9MB) or as MP4 (4.5MB)

Download the video as AVI (6.2MB) or as MP4 (3.5MB)

Demo:

Silhouette generation and stylization demo v1.3 (Win32, 3.7 MB; also works under Linux using Wine)
Models to be used with the demo (2.2 MB)

OpenNPAR Poster (from short paper at Pacific Graphics 2003, Best Poster Award):

Other Material:

extended but unpublished version of the OpenNPAR short paper (PDF, 3.1 MB)
OpenNPAR website archived by Archive.org

Cross-References:

realized with OpenNPAR: line rendering
realized with OpenNPAR: hybrid rendering
realized with OpenNPAR: high-quality hatching
realized with OpenNPAR: medical visualization
realized with OpenNPAR: G-strokes
realized with OpenNPAR: NPR lenses

Reference:

Nick Halper, Tobias Isenberg, Felix Ritter, Bert Freudenberg, Oscar Meruvia, Stefan Schlechtweg, and Thomas Strothotte (2003) OpenNPAR: A System for Developing, Programming, and Designing Non-Photorealistic Animation and Rendering. In Jon Rokne, Reinhard Klein, and Wenping Wang, eds., Proceedings of the 11^th Pacific Conference on Computer Graphics and Applications, Pacific Graphics (PG, October 8–10, Canmore, Alberta, Canada). IEEE, Los Alamitos, CA, pages 424–428, 2003. Short paper and poster, received Best Poster Award at Pacific Graphics 2003.

BibTeX entry:



@INPROCEEDINGS{Halper:2003:OAS,
  author      = {Nick Halper and Tobias Isenberg and Felix Ritter and Bert Freudenberg and Oscar Meruvia and Stefan Schlechtweg and Thomas Strothotte},
  title       = {{OpenNPAR}: A System for Developing, Programming, and Designing Non-Photorealistic Animation and Rendering},
  booktitle   = {Proceedings of the 11\textsuperscript{th} Pacific Conference on Computer Graphics and Applications, Pacific Graphics (PG, October 8--10, Canmore, Alberta, Canada)},
  OPTeditor   = {Jon Rokne and Reinhard Klein and Wenping Wang},
  year        = {2003},
  pages       = {424--428},
  publisher   = {IEEE},
  address     = {Los Alamitos, CA},
  doi         = {10.1109/PCCGA.2003.1238288},
  doi_url     = {https://doi.org/10.1109/PCCGA.2003.1238288},
  url         = {https://tobias.isenberg.cc/p/Halper2003OAS},
  url2        = {https://doi.org/10.1109/PCCGA.2003.1238288},
  pdf         = {https://tobias.isenberg.cc/personal/papers/Halper_2003_OAS.pdf},
}

This work was done at the Department of Simulation and Graphics at the University of Magdeburg, Germany.