Innovations in Visualization

NPR Lenses

Petra Neumann
Tobias Isenberg
Sheelagh Carpendale

Lens Techniques for Non-Photorealistic Line Rendering

This project aims at creating lens techniques in non-photorealistic line renderings of threedimensional models. Through the use of different distortion lenses expressive variations can be achieved for the renditions of strokes created from these models. Several different NPR lenses were developed during the course of the project. These are enriched by interaction possibilities arising from the interplay between model orientation and the line rendition created from the geometry. NPR Lenses are implemented using the OpenNPAR framework.



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Petra Neumann, Tobias Isenberg and Sheelagh Carpendale. NPR Lenses: Interactive Tools for Non-Photorealistic Line Drawings. In Proceedings of the 7th International Symposium on Smart Graphics (June 25--27, 2007, Kyoto, Japan), 4569. (Berlin, Heidelberg), (Andreas Butz and Brian Fisher and Antonio Krüger and Patrick Olivier and Shigeru Owada, Ed.) Springer-Verlag, pages 10-22, 2007. PDF Paper Video File
Petra Neumann, Tobias Isenberg and Sheelagh Carpendale. NPR Lenses: Local Effect Control for Non-Photorealistic Line Drawings. In Poster Presentations of the Fourth International Symposium on Non-Photorealistic Animation and Rendering (NPAR 2006, June 5--7, 2006, Annecy, France). (Doug DeCarlo and Lee Markosian, Ed.), 2006. PDF Paper
Petra Neumann, Tobias Isenberg, Carpendale, M. Sheelagh T. and Thomas Strothotte. Expressive Distortion of Strokes and 3D Meshes. Research report 2005-776-07, Department of Computer Science, University of Calgary, Canada, March, 2005. PDF Paper


This work is supported by iCore, Alberta Ingenuity, and the University of Calgary.