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[Buc96]  Special Effects with Half-Toning

Buchanan:1996:SEH (Article)
Author(s)Buchanan J.
Title« Special Effects with Half-Toning »
JournalComputer Graphics Forum (Proceedings of Eurographics 1996)
Volume15
Number3
Page(s)97--108
Year1996
AddressOxford
ISSN number1067-7055
Editor(s)Jarek Rossignac and François Sillion

Abstract & Keywords
Half-toning is the process by which gray-scale images are approximated with sets of black and white pixels. The process works because our eyes perceive a local average, thus half-toning seeks to approximate the local average. Ideally this approximation should be accomplished without introducing ``undesirable'' artifacts. In many situations the stylized display of images is desired. Often this stylized display is accomplished by the addition of semi-structured artifacts. In current applications the designer processes the image using tools provided by some image processing package. The resulting image is then half-toned and printed. Half-toning these processed images can reduce the visual impact of the special effects that have been introduced in the image. In this paper we show that the processes of controlled artifact introduction and half-toning can successfully be combined. By combining these two processes we ensure that the printed image is what the designer intended. We present a brief overview of the current error-diffusion half-toning techniques. We then propose several ways in which artifacts can be introduced to the image. This discussion is accompanied by a set of illustrative images. In particular, we discuss the introduction of false edges and the alteration of the scan pattern. We illustrate these techniques with a variety of images. We conclude the paper with a discussion on these new half-ioning methods for the generation of binary gray-scale textures. In addition to showing how to generate these binary gray-scale textures we also show how these gray-scale textures can be used to half-tone images.

Keywords: Half-toning, non-photorealistic rendering, graphic design

BibTeX code
@article{Buchanan:1996:SEH,
  optcitations =
                  {Floyd:1975:AAS,Haeberli:1990:PBN,Hsu:1994:DAU,Ostromoukhov:1995:AS,Pnueli:1994:DDE,Saito:1990:CRD,Salisbury:1994:IPI,Strothotte:1994:HRF,Ulichney:1987:DH,Velho:1991:DHS,Velho:1995:SSD,Winkenbach:1994:CGP},
  number = {3},
  optnote = {},
  issn = {1067-7055},
  author = {John W. Buchanan},
  keywords = {Half-toning, non-photorealistic rendering, graphic design},
  editor = {Jarek Rossignac and Fran{\c{c}}ois Sillion},
  address = {Oxford},
  localfile = {papers/Buchanan.1996.SEH.pdf},
  publisher = {NCC Blackwell Ltd},
  optmonth = aug,
  doi = {http://dx.doi.org/10.1111/1467-8659.1530097},
  organization = {Eurographics},
  journal = EUROGRAPHICS1996,
  citeseer = {http://citeseer.nj.nec.com/buchanan95special.html},
  volume = {15},
  optstatus = {OK},
  title = {{S}pecial {E}ffects with {H}alf-{T}oning},
  abstract = {Half-toning is the process by which gray-scale images are
              approximated with sets of black and white pixels. The process
              works because our eyes perceive a local average, thus half-toning
              seeks to approximate the local average. Ideally this approximation
              should be accomplished without introducing ``undesirable''
              artifacts. In many situations the stylized display of images is
              desired. Often this stylized display is accomplished by the
              addition of semi-structured artifacts. In current applications the
              designer processes the image using tools provided by some image
              processing package. The resulting image is then half-toned and
              printed. Half-toning these processed images can reduce the visual
              impact of the special effects that have been introduced in the
              image. In this paper we show that the processes of controlled
              artifact introduction and half-toning can successfully be
              combined. By combining these two processes we ensure that the
              printed image is what the designer intended. We present a brief
              overview of the current error-diffusion half-toning techniques. We
              then propose several ways in which artifacts can be introduced to
              the image. This discussion is accompanied by a set of illustrative
              images. In particular, we discuss the introduction of false edges
              and the alteration of the scan pattern. We illustrate these
              techniques with a variety of images. We conclude the paper with a
              discussion on these new half-ioning methods for the generation of
              binary gray-scale textures. In addition to showing how to generate
              these binary gray-scale textures we also show how these gray-scale
              textures can be used to half-tone images.},
  pages = {97--108},
  year = {1996},
}

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