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Multi-channel printing by orthogonal and non-orthogonal AM halftoning
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology. (Image Reproduction & Graphic Design)ORCID iD: 0000-0002-7305-956X
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology. (Image Reproduction & Graphic Design)
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology. (Image Reproduction & Graphic Design)
2013 (English)In: Proceedings of 12th International AIC Colour Congress: Bringing Colour to Life, Newcastle, UK, 2013Conference paper, Published paper (Refereed)
Abstract [en]

Multi-channel printing with more than the conventional four colorants brings numerous advantages, but also challenges, like implementation of halftone algorithms. This paper concentrates on amplitude modulated (AM) halftoning for multi-channel printing. One difficulty is the correct channel rotation to avoid the moiré effect and to achieve colour fidelity in case of misregistration. 20 test patches were converted to seven-channel images and AM halftoning was applied using two different approaches in order to obtain a moiré-free impression. One method was to use orthogonal screens and adjust the channels by overlapping the pairs of complimentary colours, while the second was to implement non-orthogonal halftone screens (ellipses). By doing so, a wider angle range is available to accommodate a seven-channel impression. The performance was evaluated by simulating misregistration in both position and angle for a total of 1600 different scenarions. ΔE values were calculated between the misregistered patches and the correct ones, for both orthogonal and non-orthogonal screens. Results show no visible morié and improvement in colour fidelity when using non-orthogonal screens for seven-channel printing, producing smaller colour differences in case of misregistration.

Place, publisher, year, edition, pages
Newcastle, UK, 2013.
Keyword [en]
multi-channel printing, AM halftoning, halftoning angle, non-orthogonal screen, moiré effect
National Category
Media Engineering
Identifiers
URN: urn:nbn:se:liu:diva-107135OAI: oai:DiVA.org:liu-107135DiVA: diva2:722011
Conference
12th International AIC Colour Congress, 8-12 July 2013, Newcastle upon Tyne, UK
Projects
Colour Printing 7.0: Next Generation Multi-Channel Printing
Available from: 2014-06-05 Created: 2014-06-05 Last updated: 2016-08-31

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Zitinski Elias, PaulaNyström, DanielGooran, Sasan

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf