Results 221 to 230 of about 911,219 (263)

Color Difference in Context: an Experiment

Color difference evaluation is an important topic in colorimetry, and it has led to many methods of calculations over the years, which still aim to improve accuracy. This study aims to explore the efficacy of existing color difference measures in evaluating perceived color differences under varying contextual conditions.
Lucia Becatti, Beatrice Sarti, Gabriele Simone, Alessandro Rizzi   +3 more
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A suggestion box of a different color

Proceedings of the 7th annual ACM SIGUCCS conference on User services - SIGUCCS '79, 1979
Users' natural wishes for personal interaction with experienced consultants must often be unfulfilled, due to Computing Center staff limitations. Some of the inevitable frustration and alienation can be alleviated by the imaginative use of a suggestion box.
Alicia Ewing Towster, Sally D. Haerer
openaire   +1 more source

Automatic Calculation of Color Differences

Journal of the Optical Society of America, 1953
Punched-card operated computing machines have been used to translate from C.I.E. space to the equal visual stimulus space of Adams. Differences in terms of Judd units are calculated by the machines as are the original colorimetric integrations. These methods have been used to process several thousand routine reductions of spectrophotometric data and ...
A, OPLER, R W, MEIKLE, M J, CHARLESWORTH
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The Size of Acceptable Color Differences

Journal of the Optical Society of America, 1953
In order to determine the size of acceptable color differences for a particular production problem, about 12 000 individual judgements of the acceptability of 287 samples as matches with 19 standards were made. The samples represented colors in all sections of the color domain, and the samples represented various size color differences from the ...
H R, DAVIDSON, E, FRIEDE
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Paired Comparisons of Color Differences

Journal of the Optical Society of America, 1963
A group of 11 observers judged total color differences between a number of pairs of Munsell colors. The analysis of the judgments made for each observer and the group was carried out by three statistical methods, the Scheffe method, the Morrissey–Gulliksen matrix method and the modified Thurstone–Mosteller method. The three methods give essentially the
Y, SUGIYANA, H, WRIGHT
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Image color-difference evaluation based on color-difference formula

2011 4th International Congress on Image and Signal Processing, 2011
To study the relationship between calculated mean color-difference and visual perception of color digital images, a visual assessment experiment was designed and carried out. Based on the experimental results and color-difference formula, the performance of CIELAB, CIEDE2000 and CMC color-difference formula on evaluating image color-difference were ...
Hao-xue Liu, Meng Xie, Min Huang
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Color naming and large color differences

Annual Meeting Optical Society of America, 1988
Color perception is categorical. Although many words for describing colors have been invented and used, there are only eleven basic color terms that are unambiguously employed to describe more than a million discriminably different colors. The 424 samples of the OSA Uniform Color Scales set are intended to sample 3-D subjective color space uniformly. A
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Threshold color differences compared to supra-threshold color differences

Color Research & Application, 2000
Threshold color difference ellipses, as represented by the MacAdam ellipses have been compared to unit contours implicit in the CIE94 color difference formula, found to represent small supra-threshold color differences well, both in the CIE chromaticity diagram as well as the a*, b* diagram.
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Effect of Printed Color Sample Separation and Color-Difference Magnitude on Perceived Color Difference

2019
460 pairs of printed samples, around 5 CIE recommended color centers, with/without gap, and 4 color-difference magnitudes of 1, 2, 4 and 8 in CIELAB units, were employed to study the effects of separation and color-difference magnitude on perceived color difference.
Ting Xu, Guihua Cui, Lan Jiang, Ming Ronnier Luo, Fereshteh Mirjalili, Jan Morovic   +5 more
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The measurement of color and color differences

2009
SIW '86 : Suga International Weathering Symposium : proceedings, November 25, 1986, Tokyo ...
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