Colorblind-friendly halftoning

S. K. Felix Yu, Yuk Hee Chan, P. K. Daniel Lun, Chi Wang Jeffrey Chan, Kai Wang Kenneth Li

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


Most images are natural images and most of them are still delivered in printed form nowadays. Halftoning is a critical process for printing natural color images. However, conventional colorblind aids do not make use of the halftoning process directly to produce colorblind-friendly image prints. In this paper, a halftoning algorithm is proposed to reduce the color distortion of an image print in the view of a colorblind person and embed hints in the image print for a colorblind person to distinguish the confusing colors. To people with normal vision, the color halftone looks the same as the original image when it is viewed at a reasonable distance, which is not achievable when conventional techniques such as recoloring and pattern overlaying are used to produce a color print for the colorblind. Besides, no dedicated hardware is required to view the printed image.

Original languageEnglish
Title of host publication2018 26th European Signal Processing Conference, EUSIPCO 2018
PublisherEuropean Signal Processing Conference, EUSIPCO
Number of pages5
ISBN (Electronic)9789082797015
Publication statusPublished - 3 Sept 2018
Event26th European Signal Processing Conference, EUSIPCO 2018 - Rome, Italy
Duration: 3 Sept 20187 Sept 2018

Publication series

NameEuropean Signal Processing Conference
ISSN (Print)2219-5491


Conference26th European Signal Processing Conference, EUSIPCO 2018


  • Color separation
  • Color vision deficiency
  • Colorblind
  • Colorblind-friendly hardcopy
  • Halftoning

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering


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