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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 57, Iss. 4 — Apr. 1, 1967
  • pp: 537–540

Optimization of the MacAdam-Modified 1965 Friele Color-Difference Formula

K. D. CHICKERING  »View Author Affiliations


JOSA, Vol. 57, Issue 4, pp. 537-540 (1967)
http://dx.doi.org/10.1364/JOSA.57.000537


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Abstract

The adjustable parameters in a MacAdam-modified version of Friele’s 1965 proposal for calculating color differences have been optimized, according to a criterion of MacAdam, to fit PGN experimental data. The mean-square error of fitting is 0.030. The distribution of the resulting color-metric coefficients more closely approximates those of the PGN data than do previous versions of Friele's proposals. The optimized primaries have chromaticity coordinates of x=0.74054, y= 0. 2 5946 for the red; x= -1.11696, y=2.11696 for the green; and x=0.13939, y= -0.03454 for the blue primary.

Citation
K. D. CHICKERING, "Optimization of the MacAdam-Modified 1965 Friele Color-Difference Formula," J. Opt. Soc. Am. 57, 537-540 (1967)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-57-4-537

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