Suprathreshold color-difference ellipsoids for surface colors
The RIT‐DuPont visual color‐difference data [Color Res. Appl. 16, 297–316 (1991)] have been used to estimate contours of equal color‐differences (ellipsoids) at 19 color centers, in CIELAB and x, y, Y/100 color spaces. The ellipsoid fits are better in the CIELAB space than in x, y, Y/100, since the...
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Published in | Color research and application Vol. 22; no. 3; pp. 148 - 155 |
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01.06.1997
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Abstract | The RIT‐DuPont visual color‐difference data [Color Res. Appl. 16, 297–316 (1991)] have been used to estimate contours of equal color‐differences (ellipsoids) at 19 color centers, in CIELAB and x, y, Y/100 color spaces. The ellipsoid fits are better in the CIELAB space than in x, y, Y/100, since the design of the RIT‐DuPont experiment emphasized directional balance in CIELAB. The ellipsoids estimated are hardly tilted with respect to L* or Y/100, and they appear to be in overall good agreement with those reported for object colors in recent publications. From the characteristics and accuracy of the RIT‐DuPont experiment, the current ellipsoids can be considered highly reliable and representative of color discrimination under the observational conditions employed, these closely following the “reference conditions” recently suggested by the CIE for industrial color‐difference evaluation [Color Res. Appl. 20, 399–403 (1995)]. © 1997 John Wiley & Sons, Inc. Col Res Appl, 22, 148–155, 1997 |
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AbstractList | The RIT‐DuPont visual color‐difference data [Color Res. Appl. 16, 297–316 (1991)] have been used to estimate contours of equal color‐differences (ellipsoids) at 19 color centers, in CIELAB and x, y, Y/100 color spaces. The ellipsoid fits are better in the CIELAB space than in x, y, Y/100, since the design of the RIT‐DuPont experiment emphasized directional balance in CIELAB. The ellipsoids estimated are hardly tilted with respect to L* or Y/100, and they appear to be in overall good agreement with those reported for object colors in recent publications. From the characteristics and accuracy of the RIT‐DuPont experiment, the current ellipsoids can be considered highly reliable and representative of color discrimination under the observational conditions employed, these closely following the “reference conditions” recently suggested by the CIE for industrial color‐difference evaluation [Color Res. Appl. 20, 399–403 (1995)]. © 1997 John Wiley & Sons, Inc. Col Res Appl, 22, 148–155, 1997 |
Author | Melgosa, M. Poza, A. J. Berns, Roy S. Hita, E. Alman, David H. |
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References_xml | – volume: 16 start-page: 297 year: 1991 end-page: 316 article-title: Visual determination of suprathreshold color‐difference tolerances using probit analysis publication-title: Color Res. Appl. – volume: 14 start-page: 139 year: 1989 end-page: 151 article-title: Performance testing of color‐difference metrics using a color tolerance dataset publication-title: Color Res. Appl. – volume: 19 start-page: 10 year: 1994 end-page: 18 article-title: Color‐discrimination thresholds translated from the CIE ( ) space to the CIE 1976( *, a*, b*) publication-title: Color Res. Appl. – start-page: 189 year: 1993 end-page: 192 – volume: 17 start-page: 6 year: 1992 end-page: 23 article-title: Discrimination ellipsoids of aperture and simulated surface colors by matching and paired comparison publication-title: Color Res. Appl. – volume: 16 start-page: 42 year: 1991 end-page: 56 article-title: Construction of discrimination ellipsoids for surface colors by the method of constant stimuli publication-title: Color Res. Appl. – volume: 9 start-page: 1247 year: 1992 end-page: 1253 article-title: Some classical color differences calculated with new formulas publication-title: J. Opt. Soc. Am. A – volume: 20 start-page: 399 year: 1995 end-page: 403 article-title: CIE guidelines for coordinated future work on industrial colour‐difference evaluation publication-title: Color Res. Appl. – volume: 103 start-page: 86 year: 1987 end-page: 94 article-title: BFD( ) colour‐difference formula. Part 1—‐Development of the formula publication-title: J. Soc. Dyers Colour. – year: 1995 – volume: 15 start-page: 189 year: 1990 end-page: 199 article-title: Parametric effects on surface color‐difference evaluation at threshold publication-title: Color Res. Appl. – volume: 3 start-page: 149 year: 1978 end-page: 151 article-title: CIE guidelines for coordinated research on colour‐difference evaluation publication-title: Color Res. Appl. – volume: 100 start-page: 128 year: 1984 end-page: 132 article-title: Modification to the JPC79 colour‐difference formulas publication-title: J. Soc. Dyers Colour. – volume: 11 start-page: 25 year: 1986 end-page: 42 article-title: Chromaticity‐discrimination ellipses for surface colours publication-title: Color Res. Appl. – volume: 11 start-page: 185 year: 1986 end-page: 195 article-title: Colour‐difference ellipsoids for five CIE colour centers publication-title: Color Res. Appl. |
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Snippet | The RIT‐DuPont visual color‐difference data [Color Res. Appl. 16, 297–316 (1991)] have been used to estimate contours of equal color‐differences (ellipsoids)... |
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Title | Suprathreshold color-difference ellipsoids for surface colors |
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