A Comparison of the MacAdam and the Adams-Nickerson Indexes of Color Differences

Ingle, George W.; Rudick, L.

doi:10.1364/josa.43.000501

Cited by 8 publications

(1 citation statement)

References 4 publications

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“…To compare the values for colorimeter precision quoted in the literature, it is necessary for the colour differences calculated using any particular colour-difference equation to be converted approximately to CIE colour-difference units by the use of a suitable conversion factor. Although this procedure is not generally valid (13)(14)(15)(16)(17)(18)(19) it is satisfactory for making rough comparisons of averages of colour differences, as in the present context. It has been assumed that 1 CIE unit is approximately equivalent to 1 ACV or 1 J-H (old NBS) unit or 1 -8 MFC units.…”

Section: Ceramic Tilesmentioning

confidence: 94%

Measurement and Assessment of Colour Differences for Industrial Use I—The Reproducibility and Repeatability of Colour‐difference Measurements

Coates

Day

Durrans

et al. 1971

Journal of the Society of Dyers and Colourists

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The precision of measurements obtainable with several types of colorimeter (Colormaster Marks IV and V, Small Sphere Color‐Eye DI, Colorcord Mk IIA, Harrison 61 and Harrison 70) for several substrates (ceramic tiles, fabrics, yarns and threads, loose stock, slubbing and plain carpet) has been studied. Several methods of preparation and presentation of the sample to an instrument are considered and the results are compared in terms of standard deviations in 1964 (CIE) units. For textile samples the most generally satisfactory technique is to present the prepared sample behind glass in a rotating head. Under these conditions a wide range of fabrics can be measured with approximately the same precision (0<1 CIE) as ceramics. For yarns and threads, carefully wound on formers, the precision is approximately 0<3 CIE, and a slightly better precision can be obtained for carpets. Values of < 0<3 have been obtained for loose stock using a special rotating head, but values for slubbing are somewhat worse (0<8–1<0). Except for the Colorcord, good between‐instrument reproducibility (< 0<3 CIE) can be obtained for measurements of colour differences. For a given sample the absolute values (X, Y, Z) vary considerably with the instrument, the differences between pairs of instruments being equivalent to several CIE units and up to 19 when the Harrison 70 is used, even for measurements on a ceramic tile.

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Section: Ceramic Tilesmentioning

confidence: 94%

Measurement and Assessment of Colour Differences for Industrial Use I—The Reproducibility and Repeatability of Colour‐difference Measurements

Coates

Day

Durrans

et al. 1971

Journal of the Society of Dyers and Colourists

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Significance of Some Receiver Errors to Color Reproduction

Weiss

1954

Proc. IRE

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Utility of Color-Difference Formulas for Match-Acceptability Decisions

Jaeckel

1973

Appl. Opt.

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Pass-fail decisions for three groups of textile patterns around twelve color centers were correlated statistically with color differences, from filter-colorimeter measurements, according to twenty formulas. Almost completely acceptable or unacceptable patterns were omitted, leaving 854 involving over 37,000 decisions. A more balanced selection of 589 patterns involved nearly 28,000 decisions. Adams Chromatic Value type formulas, especially the Morton and the Glasser Cube Root versions, performed significantly better both than most others and than assessors too severe or too lenient and no worse than assessors of correct severity. Problems are discussed.

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A Comparison of the MacAdam and the Adams-Nickerson Indexes of Color Differences

Cited by 8 publications

References 4 publications

Measurement and Assessment of Colour Differences for Industrial Use I—The Reproducibility and Repeatability of Colour‐difference Measurements

Measurement and Assessment of Colour Differences for Industrial Use I—The Reproducibility and Repeatability of Colour‐difference Measurements

Significance of Some Receiver Errors to Color Reproduction

Utility of Color-Difference Formulas for Match-Acceptability Decisions

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