The human visual system exhibits a characteristic known as the Helmholtz-Kohlrausch (H-K) effect: even if the hue and the lightness retain the same values, the actual lightness (perceived lightness) changes with changes in the color saturation. Quantification of this effect is expected to be useful for the future development and evaluation of high-quality displays. We have been studying the H-K effect in natural images projected by LED projectors, which play important roles in practical uses. To verify the effectiveness of the determinations of the H-K effect for natural images, we have performed a subjective-evaluation experiment by method of adjustment for natural images and compared the experimental values with values calculated from extended form of Nayatani's equation to apply to natural images. In general, we found a high correlation between the two, although there was a low correlation for some images. Therefore, we obtained a correction function derived from the subjective evaluation experiment value of 108 color (hue: 12 × saturation: 3 × lightness: 3) patterns and have applied it to estimate the equation H-K effect.
Yuki HAYAMI
Shizuoka University
Daiki TAKASU
Shizuoka University
Hisakazu AOYANAGI
NEC Display Solutions, Ltd.
Hiroaki TAKAMATSU
NEC Display Solutions, Ltd.
Yoshifumi SHIMODAIRA
Shizuoka University
Gosuke OHASHI
Shizuoka University
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Yuki HAYAMI, Daiki TAKASU, Hisakazu AOYANAGI, Hiroaki TAKAMATSU, Yoshifumi SHIMODAIRA, Gosuke OHASHI, "Prediction of the Helmholtz-Kohlrausch Effect for Natural Images Using a Correction Function" in IEICE TRANSACTIONS on Fundamentals,
vol. E102-A, no. 9, pp. 1217-1224, September 2019, doi: 10.1587/transfun.E102.A.1217.
Abstract: The human visual system exhibits a characteristic known as the Helmholtz-Kohlrausch (H-K) effect: even if the hue and the lightness retain the same values, the actual lightness (perceived lightness) changes with changes in the color saturation. Quantification of this effect is expected to be useful for the future development and evaluation of high-quality displays. We have been studying the H-K effect in natural images projected by LED projectors, which play important roles in practical uses. To verify the effectiveness of the determinations of the H-K effect for natural images, we have performed a subjective-evaluation experiment by method of adjustment for natural images and compared the experimental values with values calculated from extended form of Nayatani's equation to apply to natural images. In general, we found a high correlation between the two, although there was a low correlation for some images. Therefore, we obtained a correction function derived from the subjective evaluation experiment value of 108 color (hue: 12 × saturation: 3 × lightness: 3) patterns and have applied it to estimate the equation H-K effect.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E102.A.1217/_p
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@ARTICLE{e102-a_9_1217,
author={Yuki HAYAMI, Daiki TAKASU, Hisakazu AOYANAGI, Hiroaki TAKAMATSU, Yoshifumi SHIMODAIRA, Gosuke OHASHI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Prediction of the Helmholtz-Kohlrausch Effect for Natural Images Using a Correction Function},
year={2019},
volume={E102-A},
number={9},
pages={1217-1224},
abstract={The human visual system exhibits a characteristic known as the Helmholtz-Kohlrausch (H-K) effect: even if the hue and the lightness retain the same values, the actual lightness (perceived lightness) changes with changes in the color saturation. Quantification of this effect is expected to be useful for the future development and evaluation of high-quality displays. We have been studying the H-K effect in natural images projected by LED projectors, which play important roles in practical uses. To verify the effectiveness of the determinations of the H-K effect for natural images, we have performed a subjective-evaluation experiment by method of adjustment for natural images and compared the experimental values with values calculated from extended form of Nayatani's equation to apply to natural images. In general, we found a high correlation between the two, although there was a low correlation for some images. Therefore, we obtained a correction function derived from the subjective evaluation experiment value of 108 color (hue: 12 × saturation: 3 × lightness: 3) patterns and have applied it to estimate the equation H-K effect.},
keywords={},
doi={10.1587/transfun.E102.A.1217},
ISSN={1745-1337},
month={September},}
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TY - JOUR
TI - Prediction of the Helmholtz-Kohlrausch Effect for Natural Images Using a Correction Function
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1217
EP - 1224
AU - Yuki HAYAMI
AU - Daiki TAKASU
AU - Hisakazu AOYANAGI
AU - Hiroaki TAKAMATSU
AU - Yoshifumi SHIMODAIRA
AU - Gosuke OHASHI
PY - 2019
DO - 10.1587/transfun.E102.A.1217
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E102-A
IS - 9
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - September 2019
AB - The human visual system exhibits a characteristic known as the Helmholtz-Kohlrausch (H-K) effect: even if the hue and the lightness retain the same values, the actual lightness (perceived lightness) changes with changes in the color saturation. Quantification of this effect is expected to be useful for the future development and evaluation of high-quality displays. We have been studying the H-K effect in natural images projected by LED projectors, which play important roles in practical uses. To verify the effectiveness of the determinations of the H-K effect for natural images, we have performed a subjective-evaluation experiment by method of adjustment for natural images and compared the experimental values with values calculated from extended form of Nayatani's equation to apply to natural images. In general, we found a high correlation between the two, although there was a low correlation for some images. Therefore, we obtained a correction function derived from the subjective evaluation experiment value of 108 color (hue: 12 × saturation: 3 × lightness: 3) patterns and have applied it to estimate the equation H-K effect.
ER -