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[BSV+98]  Edge Enhancement Issues in Half-Toning

Buchanan:1998:EEI (In proceedings)
Author(s)Buchanan J., Streit L. and Veryovka O.
Title« Edge Enhancement Issues in Half-Toning »
InProceedings of Graphics Interface '98 (Vancouver, Canada, 18--20 June 1998)
Editor(s)Wayne Davis and Kellogg Booth and Alain Fournier
Page(s)209--216
Year1998
PublisherMorgan Kaufmann
AddressSan Francisco
ISBN number1-55860-550-9
Editor(s)Wayne Davis and Kellogg Booth and Alain Fournier

Abstract
The correct display of edges in halftoned images is necessary for accurate image reproduction. This problem has been addressed by preprocessing the image to enhance the edges or by altering the halftoning algorithm to account for edges. In this paper we present a postprocessing edge enhancement technique that is applicable to all halftoning algorithms. We identify two types of edge pixels in the image dark and light edge pixels. Edges in an image are highlighted by setting the dark/light edge pixels to black/white. We tested our method on a modern laser printer. Because of this our evaluation of the technique is restricted to clustered halftoning methods. We evaluated the effect of enhancing edges by conducting a user survey to determine the perceived value of the different edge enhancement methods. The results of the user survey - while not statistically significant - indicate that our postprocessing technique achieves comparable results to previous edge enhancement methods. Our technique is simple to implement and can be applied to any halftoning technique and thus is a good default edge-enhancing approach

BibTeX code
@inproceedings{Buchanan:1998:EEI,
  citeseer = {http://citeseer.ist.psu.edu/context/1025144/0},
  optcitations =
                  {Buchanan:1995:EPS,Knuth:1987:DHD,Saito:1990:CRD,Ulichney:1987:DH,Velho:1991:DHS,Velho:1995:SSD},
  author = {John W. Buchanan and Lisa M. Streit and Oleg Veryovka},
  booktitle = GI1998,
  editor = {Wayne Davis and Kellogg Booth and Alain Fournier},
  optstatus = {url},
  abstract = {The correct display of edges in halftoned images is necessary for
              accurate image reproduction. This problem has been addressed by
              preprocessing the image to enhance the edges or by altering the
              halftoning algorithm to account for edges. In this paper we
              present a postprocessing edge enhancement technique that is
              applicable to all halftoning algorithms. We identify two types of
              edge pixels in the image dark and light edge pixels. Edges in an
              image are highlighted by setting the dark/light edge pixels to
              black/white. We tested our method on a modern laser printer.
              Because of this our evaluation of the technique is restricted to
              clustered halftoning methods. We evaluated the effect of enhancing
              edges by conducting a user survey to determine the perceived value
              of the different edge enhancement methods. The results of the user
              survey - while not statistically significant - indicate that our
              postprocessing technique achieves comparable results to previous
              edge enhancement methods. Our technique is simple to implement and
              can be applied to any halftoning technique and thus is a good
              default edge-enhancing approach},
  localfile = {papers/Buchanan.1998.EEI.pdf},
  title = {{E}dge {E}nhancement {I}ssues in {H}alf-{T}oning},
  address = {San Francisco},
  isbn = {1-55860-550-9},
  publisher = {Morgan Kaufmann},
  year = {1998},
  pages = {209--216},
}

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