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Volume: 9 | Article ID: art00030
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Hue Constancy of RGB Spaces
Nathan Moroney
Jason Gibson
  DOI :  10.2352/CIC.2001.9.1.art00030  Published Online :  January 2001
Abstract

A non-linear, sigmoidal transform is applied independently to each of the three channels in sRGB, e-sRGB, ROMM, Wide Gamut RGB and a prime color based RGB space. The input data are all of the chromatic samples of the MacBeth color checker. The resulting hue errors are compared in CIELAB, CIECAM97s, IPT and the OSA-UCS. ROMM has the best hue constancy based on the CIELAB results. However, ROMM does not have the best hue constancy based on the CIECAM97s, IPT and OSA-UCS results. This implies that the hue constancy optimization will be sensitive to the color space, specifically in the blues. Previous research has shown that the CIECAM97s and IPT spaces have significantly better blue hue constancy than CIELAB. Therefore, sRGB, e-sRGB, Wide Gamut RGB and prime color RGB may have better blue constancy than ROMM. This hypothesis is verified using a constant sum paired comparison psychophysics experiment.

Journal Title : Color and Imaging Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/CIC.2001.9.1.art00030
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Nathan Moroney, Jason Gibson, "Hue Constancy of RGB Spaces"  in Proc. IS&T 9th Color and Imaging Conf.,  2001,  pp 163 - 167,  https://doi.org/10.2352/CIC.2001.9.1.art00030

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Copyright © Society for Imaging Science and Technology 2001
72010350
Color and Imaging Conference
color imaging conf
2166-9635
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2166-9635(20010101)2001:1L.163;1-
cic_v2001n1/splitsection30.xml
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Articles
Hue Constancy of RGB Spaces
MoroneyNathan
GibsonJason
01012001
2001
1
163
167
2001
A non-linear, sigmoidal transform is applied independently to each of the three channels in sRGB, e-sRGB, ROMM, Wide Gamut RGB and a prime color based RGB space. The input data are all of the chromatic samples of the MacBeth color checker. The resulting hue errors are compared in CIELAB, CIECAM97s, IPT and the OSA-UCS. ROMM has the best hue constancy based on the CIELAB results. However, ROMM does not have the best hue constancy based on the CIECAM97s, IPT and OSA-UCS results. This implies that the hue constancy optimization will be sensitive to the color space, specifically in the blues. Previous research has shown that the CIECAM97s and IPT spaces have significantly better blue hue constancy than CIELAB. Therefore, sRGB, e-sRGB, Wide Gamut RGB and prime color RGB may have better blue constancy than ROMM. This hypothesis is verified using a constant sum paired comparison psychophysics experiment.