Constant hue loci in Rec. 2020 gamut under an HDR condition

Hongbing Wang, Minchen Wei, Xinchao Qu

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

Abstract

Hue linearity is critically important to uniform color spaces and color appearance models. Past studies investigating hue linearity only covered relatively small color gamuts, which was generally acceptable for conventional display technologies. The recent development of HDR and WCG display technologies has motivated the development of new color spaces (e.g., ICTCP and Jzazbz). The hue linearity of these new color spaces, however, was not verified for the claimed HDR and WCG conditions, due to the lack of constant hue loci data. In this study, an experiment setup was carefully developed to produce HDR and WCG conditions, with the stimulus luminance of 3400 cd/m2 and the diffuse white luminance of 1000 cd/m2 and the stimulus chromaticities almost covering the Rec. 2020 gamut. The human observers performed a hue matching task, adjusting the hue of the test stimulus, with a hue angle step of 0.2°, at various chroma levels to match that of the reference stimulus at 21 different hues. The derived constant hue loci were used to test the various UCSs and suggested the need to improve the hue linearity of these spaces.

Original languageEnglish
Title of host publicationFinal Program and Proceedings - IS and T/SID Color Imaging Conference
PublisherSociety for Imaging Science and Technology
Pages81-84
Number of pages4
Edition1
ISBN (Electronic)9780892083626
DOIs
Publication statusPublished - Nov 2022
Event30th Color and Imaging Conference - Color Science and Engineering Systems, Technologies, and Applications, CIC 2022 - Scottsdale, United States
Duration: 13 Nov 202217 Nov 2022

Publication series

NameFinal Program and Proceedings - IS and T/SID Color Imaging Conference
Number1
Volume30
ISSN (Print)2166-9635
ISSN (Electronic)2169-2629

Conference

Conference30th Color and Imaging Conference - Color Science and Engineering Systems, Technologies, and Applications, CIC 2022
Country/TerritoryUnited States
CityScottsdale
Period13/11/2217/11/22

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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