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[OH+98b]  Structure-Artifact-Free Multilevel Error Diffusion Algorithm

Ostromoukhov:1998:SAF (In proceedings)
Author(s)Ostromoukhov V. and Hersch R.
Title« Structure-Artifact-Free Multilevel Error Diffusion Algorithm »
InProceedings of SPIE Electronic Imaging: Processing, Printing, and Publishing in Color
SeriesSPIE Proceedings Series
Editor(s)Jan Bares and Christopher T. Bartlett and Paul A. Delabastita and José L. Encarnação and Nelson V. Tabiryan and Panos E. Trahanias and Arthur R. Weeks
Volume3409
Page(s)215--219
Year1998
PublisherSPIE
AddressBellingham, Washington
URLhttp://www.iro.umontreal.ca/~ostrom/publications/abstracts.html#Europto98_ArtefactFreeED
Editor(s)Jan Bares and Christopher T. Bartlett and Paul A. Delabastita and José L. Encarnação and Nelson V. Tabiryan and Panos E. Trahanias and Arthur R. Weeks

Abstract
Error-diffusion is widely used to generate intensity levels between the primary levels of multi-level color printing devices (ink-jet printers, electrophotographic printers). Standard error-diffusion algorithms produce structure artifacts at rational intensity levels such as 1/3, ½ and 2/3. The boundary between structure artifacts breaks the visual continuity in regions of low intensity gradients and generates undesirable false contours. These undesirable structure artifacts are also visible when error-diffusion is used to generate intermediate intensity levels between primary levels. In this contribution, we propose to remove these structure artifacts by introducing small discontinuities in the tone correction curve, thereby avoiding reproducing the intensity levels responsible for the generation of structure artifacts. The method can not be applied to bilevel printing, since the forbidden intensity regions responsible for the structure artifacts would be too large. In multi-level color printing however, the forbidden intensity regions are small enough and do not produce any visible intensity breaks in varying intensity wedges.

BibTeX code
@inproceedings{Ostromoukhov:1998:SAF,
  optpostscript = {},
  www = {http://spie.org/scripts/abstract.pl?bibcode=1998SPIE%2e3409%2e%2e215O},
  optnote = {},
  optorganization = {},
  author = {Victor Ostromoukhov and Roger D. Hersch},
  optkey = {},
  series = {SPIE Proceedings Series},
  optannote = {},
  editor = {Jan Bares and Christopher T. Bartlett and Paul A. Delabastita and
            Jos{\'e} L. Encarna{\c{c}}{\~{a}}o and Nelson V. Tabiryan and Panos
            E. Trahanias and Arthur R. Weeks},
  url = {http://www.iro.umontreal.ca/~ostrom/publications/abstracts.html#Europto98_ArtefactFreeED},
  localfile = {papers/Ostromoukhov.1998.SAF.pdf},
  address = {Bellingham, Washington},
  optisbn = {},
  publisher = {SPIE},
  optmonth = {},
  optciteseer = {},
  doi = {http://dx.doi.org/10.1117/12.324112},
  volume = {3409},
  optcrossref = {},
  booktitle = {Proceedings of SPIE Electronic Imaging: Processing, Printing, and
               Publishing in Color},
  optnumber = {},
  abstract = {Error-diffusion is widely used to generate intensity levels
              between the primary levels of multi-level color printing devices
              (ink-jet printers, electrophotographic printers). Standard
              error-diffusion algorithms produce structure artifacts at rational
              intensity levels such as 1/3, 1/2 and 2/3. The boundary between
              structure artifacts breaks the visual continuity in regions of low
              intensity gradients and generates undesirable false contours.
              These undesirable structure artifacts are also visible when
              error-diffusion is used to generate intermediate intensity levels
              between primary levels. In this contribution, we propose to remove
              these structure artifacts by introducing small discontinuities in
              the tone correction curve, thereby avoiding reproducing the
              intensity levels responsible for the generation of structure
              artifacts. The method can not be applied to bilevel printing,
              since the forbidden intensity regions responsible for the
              structure artifacts would be too large. In multi-level color
              printing however, the forbidden intensity regions are small enough
              and do not produce any visible intensity breaks in varying
              intensity wedges.},
  title = {{S}tructure-{A}rtifact-{F}ree {M}ultilevel {E}rror {D}iffusion
           {A}lgorithm},
  year = {1998},
  pages = {215--219},
}

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