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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 53, Iss. 8 — Aug. 1, 1963
  • pp: 978–992

Color-Matching Responses to Red Light of Varying Luminance and Purity in Complex and Simple Images

LAWRENCE WHEELER  »View Author Affiliations

JOSA, Vol. 53, Issue 8, pp. 978-992 (1963)

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The parts of a complex, semirandom image containing 100 different mixtures of red and tungsten light were matched to Munsell color papers. Similar combinations of the two illuminants were matched separately as aperture colors (i.e., as isolated test patches in a dark surround) and also as test patches on eight homogeneous backgrounds containing mixtures of the two illuminants. A total of 3500 matches were obtained from 14 observers. The complex image and certain of the simple-image sets gave hue, lightness, and saturation patterns, over the sampled ranges of purity and luminance, that were almost identical, especially when compared with the aperture color responses. However, the results may support the possibility of a complex image that would produce “richer” hue characteristics than those generated by a set of simple images, if the latter were confined to a single background mixture of red and tungsten light.

LAWRENCE WHEELER, "Color-Matching Responses to Red Light of Varying Luminance and Purity in Complex and Simple Images," J. Opt. Soc. Am. 53, 978-992 (1963)

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  1. L. Wheeler, J. Opt. Soc. Am. 52, 1058 (1962). Complete data tables for the color-naming study referred to here and for the color-matching studies may be obtained from University Microfilms, Inc., Ann Arbor, Michigan, Document No. 62–5090 (a doctoral dissertation in psychology, Indiana University).
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  11. Munsell Color Company. Munsell system of color notation, publications, materials, and equipment, Baltimore, Maryland, 1960.
  12. Munsell Color Company. Constant hue loci chart set, OSA subcommittee on the spacing of the Munsell colors, J. Opt. Soc. Am. 33, 385 (1943).
  13. Eastman Kodak Company, Kodak Wratten Filters for Scientific And Technical Use, 19th ed., B-3 (1957).
  14. A similar observation is made in: M. S. Wilson and R. W. Brocklebank, J. Phot. Sci. 8, 141 (1960); an important description of color-naming responses to a variety of complex, synthetic images contrasted with responses to natural images; these investigators also conclude that the two types of image are, or can be, equivalent in variety of hue. The writer regrets that this study did not come to his attention prior to publication of his colornaming paper.1
  15. An uncertainty measure exists for comparing the differential "flatness" of two or more frequency distributions; e.g., C. E. Shannon, Bell System Tech. J. 27, 379 (1948). F. J. Restle directed the author's attention to this measure and also made technical suggestions that improved this section of the paper.
  16. See Ref. 14. Wilson and Brocklebank discuss the doubled density situation in greater detail than does the present report.

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