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Investigating Performance of Uniform Color Spaces for High Dynamic Range and Wide Gamut Color Difference Applications
Muhammad Safdar
M. Ronnier Luo
Guihua Cui
  DOI :  10.2352/ISSN.2169-2629.2017.32.88  Published Online :  November 2016
Abstract

This study investigated that which of the available color spaces performs best in different aspects when encoding high dynamic range and wide gamut color difference signals. Six different color spaces including CIELAB, CIELUV, CAM16-UCS, ICtCp, ICaCb, and zICaCb (current modification of ICaCb), were investigated for their performance in terms of local and global uniformity, hue linearity, encoding of Rec.2020 signals, convergence of iso-hue lines at single point (locus), distance between locus and origin, and computational cost. A new metric was developed for hue linearity test. Comprehensive testing was performed using the most reliable datasets and some modifications were proposed in the recently developed color space named ICaCb. Results showed that the current zICaCb outperformed other spaces tested for most of the measures and gave similar performance for other measures.

Journal Title : Color and Imaging Conference
Publisher Name : Society for Imaging Science and Technology
Subject Areas :
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 DOI 10.2352/ISSN.2169-2629.2017.32.88
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  Cite this article 

Muhammad Safdar, M. Ronnier Luo, Guihua Cui, "Investigating Performance of Uniform Color Spaces for High Dynamic Range and Wide Gamut Color Difference Applications"  in Proc. IS&T 24th Color and Imaging Conf. ,  2016,  https://doi.org/10.2352/ISSN.2169-2629.2017.32.88

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Copyright © Society for Imaging Science and Technology 2016
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Color and Imaging Conference
color imaging conf
2166-9635
Society for Imaging Science and Technology
10.2352/ISSN.2169-2629.2017.32.88
2166-9635(20161107)2016:1L.88;1-
s14.phd
/ist/cic/2016/00002016/00000001/art00014
Articles
Investigating Performance of Uniform Color Spaces for High Dynamic Range and Wide Gamut Color Difference Applications
SafdarMuhammad
LuoM. Ronnier
CuiGuihua
07112016
2016
1
88
93
2016
This study investigated that which of the available color spaces performs best in different aspects when encoding high dynamic range and wide gamut color difference signals. Six different color spaces including CIELAB, CIELUV, CAM16-UCS, ICtCp, ICaCb, and zICaCb (current modification of ICaCb), were investigated for their performance in terms of local and global uniformity, hue linearity, encoding of Rec.2020 signals, convergence of iso-hue lines at single point (locus), distance between locus and origin, and computational cost. A new metric was developed for hue linearity test. Comprehensive testing was performed using the most reliable datasets and some modifications were proposed in the recently developed color space named ICaCb. Results showed that the current zICaCb outperformed other spaces tested for most of the measures and gave similar performance for other measures.