NPR Lenses: Interactive Tools for Non-Photorealistic Line Drawings

Description:

NPR Lenses is an interactive technique for producing expressive non-photorealistic renderings. It provides an intuitive visual interaction tool for illustrators, allowing them to seamlessly apply a large variety of emphasis techniques. Advantages of 3D scene manipulation are combined with the capabilities of viewer-aligned lenses by inserting 2D lens controls into the 3D rendering pipeline. By using lenses that are spatially explicit and constrained we enable object-independent adjustments in 3D. Regions of emphasis can be easily created by adjusting lens parameters and any combination of line style, type, shape, and position of computer-generated lines. NPR Lenses support the creation of effects similar to those found in many existing hand-drawn illustrations and allow creative freedom through interactive control at the same time.

Paper download: (2.3 MB)

Video:

Download the video as AVI-MPEG4 (13.8MB) or watch it on YouTube.

Demo:

Poster (presented at NPAR 2006):

Main Reference:

Petra Neumann, Tobias Isenberg, and Sheelagh Carpendale (2007) NPR Lenses: Interactive Tools for Non-Photorealistic Line Drawings. In Andreas Butz, Brian Fisher, Antonio Krüger, Patrick Olivier, and Shigeru Owada, eds., Proceedings of the 7^th International Symposium on Smart Graphics (SG, June 25–27, Kyoto, Japan). Springer-Verlag, Berlin, Heidelberg, pages 10–22, 2007.

BibTeX entry:



@INPROCEEDINGS{Neumann:2007:NLI,
  author      = {Petra Neumann and Tobias Isenberg and Sheelagh Carpendale},
  title       = {{NPR} Lenses: Interactive Tools for Non-Photorealistic Line Drawings},
  booktitle   = {Proceedings of the 7\textsuperscript{th} International Symposium on Smart Graphics (SG, June 25--27, Kyoto, Japan)},
  series      = {Lecture Notes in Computer Science},
  OPTeditor   = {Andreas Butz and Brian Fisher and Antonio Kr{\"u}ger and Patrick Olivier and Shigeru Owada},
  year        = {2007},
  volume      = {4569},
  pages       = {10--22},
  publisher   = {Springer-Verlag},
  address     = {Berlin, Heidelberg},
  doi         = {10.1007/978-3-540-73214-3_2},
  doi_url     = {https://doi.org/10.1007/978-3-540-73214-3_2},
  url         = {https://tobias.isenberg.cc/p/Neumann2007NLI},
  url2        = {http://petra.isenberg.cc/wiki/pmwiki.php?n=MyUniversity.NPRLenses},
  pdf         = {https://tobias.isenberg.cc/personal/papers/Neumann_2007_NLI.pdf},
}

Other References:

Petra Neumann, Tobias Isenberg, and Sheelagh Carpendale (2006) NPR Lenses: Local Effect Control for Non-Photorealistic Line Drawings. In Doug DeCarlo and Lee Markosian, eds., Poster Presentations of the Fourth International Symposium on Non-Photorealistic Animation and Rendering (NPAR, June 5–7, Annecy, France). 2006. Extended abstract and poster, also see the paper at Smart Graphics 2007 and the technical report.

BibTeX entry:



@INPROCEEDINGS{Neumann:2006:NLL,
  author      = {Petra Neumann and Tobias Isenberg and Sheelagh Carpendale},
  title       = {{NPR} Lenses: Local Effect Control for Non-Photorealistic Line Drawings},
  booktitle   = {Poster Presentations of the Fourth International Symposium on Non-Photorealistic Animation and Rendering (NPAR, June 5--7, Annecy, France)},
  OPTeditor   = {Doug DeCarlo and Lee Markosian},
  year        = {2006},
  url         = {https://tobias.isenberg.cc/p/Neumann2007NLI},
  url2        = {http://petra.isenberg.cc/wiki/pmwiki.php?n=MyUniversity.NPRLenses},
  pdf         = {https://tobias.isenberg.cc/personal/papers/Neumann_2006_NLL.pdf},
}

Petra Neumann, Tobias Isenberg, M. Sheelagh T. Carpendale, and Thomas Strothotte (2005) Expressive Distortion of Strokes and 3D Meshes. Technical report 2005-776-07, Department of Computer Science, University of Calgary, March 2005. Also see the paper at Smart Graphics 2007 and the poster at NPAR 2006.

BibTeX entry:



@TECHREPORT{Neumann:2005:EDS,
  author      = {Petra Neumann and Tobias Isenberg and Carpendale, M. Sheelagh T. and Thomas Strothotte},
  title       = {Expressive Distortion of Strokes and {3D} Meshes},
  year        = {2005},
  institution = {Department of Computer Science, University of Calgary},
  number      = {2005-776-07},
  month       = mar,
  address     = {Canada},
  doi         = {10.11575/PRISM/30500},
  doi_url     = {https://doi.org/10.11575/PRISM/30500},
  url         = {https://tobias.isenberg.cc/p/Neumann2007NLI},
  url2        = {http://petra.isenberg.cc/wiki/pmwiki.php?n=MyUniversity.NPRLenses},
  pdf         = {https://tobias.isenberg.cc/personal/papers/Neumann_2005_EDS.pdf},
}

This work was done at the Innovis group at the Interactions Lab of the University of Calgary, Canada, based on work done at the University of Magdeburg, Germany.