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D. Macadam (1942)
Visual Sensitivities to Color Differences in DaylightJournal of the Optical Society of America, 32
Kuehni Kuehni (1971)
Acceptability contours and small color‐difference formulasJ. Color Appear., 1
Coates Coates, Provost Provost, Rigg Rigg (1972)
The measurement and assessment of colour differences for industrial use—IV—The accuracy of visual assessmentsJ. Soc. Dyers Colour., 88
Alder Alder (1981)
A Monte‐Carlo method for the validation of discrimination ellipse dataJ. Soc. Dyers Colour., 97
Coates Coates, Fong Fong, Rigg Rigg (1981)
Uniform lightness scalesJ. Soc. Dyers Colour., 97
Alder Alder, Chaing Chaing, Chong Chong, Coates Coates, Khalili Khalili, Rigg Rigg (1982)
Uniform chromaticity scales—new experimental dataJ. Soc. Dyers Colour., 98
Morley Morley, Munn Munn, Billmeyer Billmeyer (1975)
Small and moderate colour differences: II. The Morley dataJ. Soc. Dyers Colour., 91
R. Kuehni, R. Marcus (1979)
An Experiment in Visual Scaling of Small Color Differences*Color Research & Application
Friele Friele (1978)
Fine color metricColor Res. Appl., 3
D. Strocka, A. Brockes, W. Paffhausen (1983)
Influence of experimental parameters on the evaluation of color‐difference ellipsoidsColor Research and Application, 8
Kuehni Kuehni (1971)
Acceptability contours of selected textile matches in colour spaceText. Chem. Colorist, 3
Gill Gill, Murray Murray (1972)
Quasi‐Newton methods for unconstrained optimizationJ. Inst. Math. Appl., 9
H. Davidson, E. Friede (1953)
The size of acceptable color differences.Journal of the Optical Society of America, 43 7
Kuehni Kuehni (1972)
Color difference and objective acceptability evaluationJ. Color Appear., 1
Helson Helson, Judd Judd, Warren Warren (1952)
Object‐color changes from daylight to incandescent filament illuminationIllum. Eng., 47
R. Rich, F. Billmeyer, W. Howe (1975)
Method for deriving color-difference-perceptibility ellipses for surface-color samplesJournal of the Optical Society of America, 65
S. Jaeckel (1973)
Utility of color-difference formulas for match-acceptability decisions.Applied optics, 12 6
L. Friele (1978)
Fine color metric (FCM)Color Research and Application, 3
P. Gill, W. Murray (1972)
Quasi-Newton Methods for Unconstrained OptimizationIma Journal of Applied Mathematics, 9
Robertson Robertson (1978)
Guidelines for coordinated research on colour‐difference equationsColor Res. Appl., 3
C. Bartleson (1979)
Predicting corresponding colors with changes in adaptationColor Research and Application, 4
McDonald McDonald (1980)
Industrial pass/fail colour matching, part 1—Preparation of visual colour‐matching dataJ. Soc. Dyers Colour., 96
K. Witt, G. Döring (1983)
Parametric variations in a threshold color‐difference ellipsoid for green painted samplesColor Research and Application, 8
G. Wyszecki, G. Fielder (1971)
New color-matching ellipses.Journal of the Optical Society of America, 61 9
Available colour‐discrimination data for surface colours have been analysed to produce chromaticity‐discrimination ellipses for individual colour centres. Applying simulated errors showed that when the distribution of samples around a standard was unsatisfactory, the ellipses obtained were unreliable. A total of 132 reliable ellipses were obtained. The values of 6 and a/b varied systematically over the chro‐maticity diagram, the patterns from acceptability, perceptibility, textile, and non‐textile ellipses being very similar. New experimental data involving over 400 pairs of samples corresponding to 70 of the colour centres and assessed against a grey scale were used to adjust the relative sizes of the ellipses. Overall set factors were used to bring data from different sources onto a common scale. However, even after allowing for different lightness levels, the sizes of the ellipses still appeared to be irregular. Using the new results to adjust the sizes of the individual ellipses from any one group of data, e.g., BFD, DF, or MMB, gave ellipses forming a much more regular pattern. In contrast to the MacAdam ellipses, the smallest ellipses occurred in the blue‐grey region. Our results imply that the relative sizes of the ellipses from the same group of data are in error by a factor of two or more. Comparing colour differences for different colours appears to be much more difficult than has been previously realised. The problem appears to have affected all the major groups of published data.
Color Research & Application – Wiley
Published: Mar 1, 1986
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