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[AWB+06]  Tweakable Light and Shade for Cartoon Animation

Anjyo:2006:TLS (In proceedings)
Author(s)Anjyo K.I., Wemler S. and Baxter W.
Title« Tweakable Light and Shade for Cartoon Animation »
InProceedings of the Fourth International Symposium on Non-Photorealistic Animation and Rendering (NPAR 2006, Annecy, France, June 5--7, 2006)
Editor(s)Doug DeCarlo and Lee Markosian
Page(s)133--139
Year2006
PublisherACM Press
AddressNew York
Editor(s)Doug DeCarlo and Lee Markosian

Abstract
Light and shade in the context of non-photorealistic imaging, such as digital cel animation, are semantic notations, rather than physical phenomena. Therefore stylized light and shade should be intentionally animated instead of simulated. This paper proposes an intuitive, direct manipulation method for animating stylized light and shade in real-time. Our method provides intuitive click-and-drag operations for translating and deforming the shaded areas, including rotation, directional scaling, splitting, and squaring of high-lights, all without tedious parameter tuning. Our prototype system demonstrates the algorithms in our method, which are implemented along with a real-time cartoon shader on commodity graphics hard-ware. This system allows the interactive creation of stylized shading keyframes for animations, illustrating the effectiveness of the proposed techniques.

BibTeX code
@inproceedings{Anjyo:2006:TLS,
  optpostscript = {},
  optorganization = {},
  author = {Ken-Ichi Anjyo and Shuhei Wemler and William Baxter},
  optkey = {},
  optannote = {},
  optseries = {},
  editor = {Doug DeCarlo and Lee Markosian},
  address = {New York},
  localfile = {papers/Anjyo.2006.TLS.pdf},
  optisbn = {},
  publisher = {ACM Press},
  optkeywords = {},
  doi = {http://doi.acm.org/10.1145/1124728.1124750},
  optmonth = {},
  optciteseer = {},
  opturl = {},
  optcrossref = {},
  optwww = {},
  booktitle = NPAR2006,
  optvolume = {},
  optnumber = {},
  abstract = {Light and shade in the context of non-photorealistic imaging, such
              as digital cel animation, are semantic notations, rather than
              physical phenomena. Therefore stylized light and shade should be
              intentionally animated instead of simulated. This paper proposes
              an intuitive, direct manipulation method for animating stylized
              light and shade in real-time. Our method provides intuitive
              click-and-drag operations for translating and deforming the shaded
              areas, including rotation, directional scaling, splitting, and
              squaring of high-lights, all without tedious parameter tuning. Our
              prototype system demonstrates the algorithms in our method, which
              are implemented along with a real-time cartoon shader on commodity
              graphics hard-ware. This system allows the interactive creation of
              stylized shading keyframes for animations, illustrating the
              effectiveness of the proposed techniques.},
  title = {{T}weakable {L}ight and {S}hade for {C}artoon {A}nimation},
  year = {2006},
  pages = {133--139},
}

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