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[OH+98]  Stochastic Clustered-Dot Dithering

Ostromoukhov:1998:SCD (In proceedings)
Author(s)Ostromoukhov V. and Hersch R.
Title« Stochastic Clustered-Dot Dithering »
InProceedings of SPIE Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts IV
SeriesSPIE Proceedings Series
Editor(s)Giordano B. Beretta and Reiner Eschbach
Volume3648
Page(s)496--505
Year1998
PublisherSPIE
AddressBellingham, Washington
URLhttp://www.iro.umontreal.ca/~ostrom/publications/abstracts.html#SPIE99_StochasticClust
Editor(s)Giordano B. Beretta and Reiner Eschbach

Abstract
A new technique for building stochastic clustered-dot screens is being proposed. A large dither matrix comprising thousands of stochastically laid out screen dots is constructed by first laying out the screen dot centers. Screen dot centers ar obtained by placing discrete disks of a chosen radius at free cell locations when traversing the dither array cells according to either a discretely rotated Halberd space-filling curve or a random space-filling curve. After Delauney triangulation of the screen dot centers, the maximal surface of each screen dot is computed and iso- intensity regions are created. This iso-intensity map is converted to an anti-aliased grayscale image, i.e. to an array of preliminary threshold values. These threshold values are renumbered to obtain the threshold values of the final dither threshold array. By changing the disk radius, the screen dot size can be adapted to the characteristics of particular printing devices. Larger screen dots may improve the tone reproduction of printers having important dot gain.

BibTeX code
@inproceedings{Ostromoukhov:1998:SCD,
  optpostscript = {},
  www = {http://spie.org/scripts/abstract.pl?bibcode=1998SPIE%2e3648%2e%2e496O},
  optnote = {},
  optorganization = {},
  author = {Victor Ostromoukhov and Roger D. Hersch},
  optkey = {},
  series = {SPIE Proceedings Series},
  optannote = {},
  editor = {Giordano B. Beretta and Reiner Eschbach},
  url = {http://www.iro.umontreal.ca/~ostrom/publications/abstracts.html#SPIE99_StochasticClust},
  localfile = {papers/Ostromoukhov.1998.SCD.pdf},
  address = {Bellingham, Washington},
  optisbn = {},
  publisher = {SPIE},
  optmonth = {},
  optciteseer = {},
  doi = {http://dx.doi.org/10.1117/12.334594},
  volume = {3648},
  optcrossref = {},
  booktitle = {Proceedings of SPIE Color Imaging: Device-Independent Color,
               Color Hardcopy, and Graphic Arts IV},
  optnumber = {},
  abstract = {A new technique for building stochastic clustered-dot screens is
              being proposed. A large dither matrix comprising thousands of
              stochastically laid out screen dots is constructed by first laying
              out the screen dot centers. Screen dot centers ar obtained by
              placing discrete disks of a chosen radius at free cell locations
              when traversing the dither array cells according to either a
              discretely rotated Halberd space-filling curve or a random
              space-filling curve. After Delauney triangulation of the screen
              dot centers, the maximal surface of each screen dot is computed
              and iso- intensity regions are created. This iso-intensity map is
              converted to an anti-aliased grayscale image, i.e. to an array of
              preliminary threshold values. These threshold values are
              renumbered to obtain the threshold values of the final dither
              threshold array. By changing the disk radius, the screen dot size
              can be adapted to the characteristics of particular printing
              devices. Larger screen dots may improve the tone reproduction of
              printers having important dot gain.},
  title = {{S}tochastic {C}lustered-{D}ot {D}ithering},
  year = {1998},
  pages = {496--505},
}

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