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[MG+02]  Hardware-Accelerated Real Time Charcoal Rendering

Majumder:2002:HAR (In proceedings)
Author(s)Majumder A. and Gopi M.
Title« Hardware-Accelerated Real Time Charcoal Rendering »
InProceedings of the Second International Symposium on Non-Photorealistic Animation and Rendering (NPAR 2002, Annecy, France, June 3--5, 2002)
Editor(s)Adam Finkelstein
Page(s)59--66
Year2002
PublisherACM Press
AddressNew York
Editor(s)Adam Finkelstein

Abstract
In this paper, we present simple rendering techniques implemented using traditional graphics hardware to achieve the effects of charcoal drawing. The effects include characteristics of charcoal drawings like broad grainy strokes and smooth tonal variations that are achieved by smudging the charcoal by hand. Further, we also generate the closure effect that is used by artists at times to avoid hard silhouette edges. All these effects are achieved using contrast enhancement operators on textures and/or colors of the 3D model.Our contribution lies in unifying the methods to achieve these effects under the common framework of contrast enhancement operators. Further, since the effects have been implemented using traditional graphics hardware, a single rendering pass is sufficient to create different effects. Hence, we can render highly complex models with large number of triangles at interactive rates. Thus, our method is especially suited for applications like scientific visualization and preliminary sketches/animations.

BibTeX code
@inproceedings{Majumder:2002:HAR,
  optnote = {},
  optorganization = {},
  author = {Aditi Majumder and Meenakshisundaram Gopi},
  optkey = {},
  optannote = {},
  optseries = {},
  editor = {Adam Finkelstein},
  address = {New York},
  localfile = {papers/Majumder.2002.HAR.pdf},
  publisher = {ACM Press},
  doi = {http://doi.acm.org/10.1145/508530.508541},
  optmonth = {},
  citeseer = {http://citeseer.nj.nec.com/majumder02hardware.html},
  optcrossref = {},
  booktitle = NPAR2002,
  optstatus = {OK},
  optvolume = {},
  optnumber = {},
  title = {{H}ardware-{A}ccelerated {R}eal {T}ime {C}harcoal {R}endering},
  abstract = {In this paper, we present simple rendering techniques implemented
              using traditional graphics hardware to achieve the effects of
              charcoal drawing. The effects include characteristics of charcoal
              drawings like broad grainy strokes and smooth tonal variations
              that are achieved by smudging the charcoal by hand. Further, we
              also generate the closure effect that is used by artists at times
              to avoid hard silhouette edges. All these effects are achieved
              using contrast enhancement operators on textures and/or colors of
              the 3D model.Our contribution lies in unifying the methods to
              achieve these effects under the common framework of contrast
              enhancement operators. Further, since the effects have been
              implemented using traditional graphics hardware, a single
              rendering pass is sufficient to create different effects. Hence,
              we can render highly complex models with large number of triangles
              at interactive rates. Thus, our method is especially suited for
              applications like scientific visualization and preliminary
              sketches/animations. },
  year = {2002},
  pages = {59--66},
}

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