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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 33, Iss. 7 — Jul. 1, 1943
  • pp: 385–411

Final Report of the O.S.A. Subcommittee on the Spacing of the Munsell Colors

SIDNEY M. NEWHALL, DOROTHY NICKERSON, and DEANE B. JUDD  »View Author Affiliations


JOSA, Vol. 33, Issue 7, pp. 385-411 (1943)
http://dx.doi.org/10.1364/JOSA.33.000385


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Abstract

This report presents the characteristics of a modified and enlarged Munsell solid which has been evolved from the 1940 visual estimates of the Munsell Book of Color samples. All three dimensions have been carefully reviewed and extensively revised. The newly defined loci of constant hue have been extended closer to the extremes of value while the loci of constant chroma have been extrapolated to the pigment maximum. The dimension of value has been redefined without substantial departure from the Munsell-Sloan-Godlove scale. By the above changes a solid is achieved which approaches more closely to A. H. Munsell’s dual ideal of psychological equispacing and precise applicability. The new solid is defined in terms of the I.C.I. standard coordinate system and Illuminant C.

Citation
SIDNEY M. NEWHALL, DOROTHY NICKERSON, and DEANE B. JUDD, "Final Report of the O.S.A. Subcommittee on the Spacing of the Munsell Colors," J. Opt. Soc. Am. 33, 385-411 (1943)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-33-7-385


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References

  1. This subcommittee was appointed by L. A. Jones in 1937 as a Subcommittee of the Colorimetry Committee of the Optical Society of America. It includes H. P. Gage, D. B. Judd, Dorothy Nickerson, W. B. VanArsdel, and S. M. Newhall, chairman. Dr. Gage and Mr. VanArsdel have been unable to participate in the work of reducing the data to this form, but both have indicated approval of the report.
  2. Italic numbers in parentheses refer to literature cited.
  3. This table can be used for plotting complete charts.
  4. The National Bureau of Standards and Glenn-Killian data provided a good check on the samples of the standard 20 hues. When there was doubt because of a large discrepancy, National Bureau of Standards data were used because special calibration precautions had been taken to obtain accurate wave-length and photometric values. The National Bureau of Standards data were used for all value conversions. For the 20 intermediate hues only one set of data was available. It is important to recognize that the table depends upon the accuracy of the I.C.I. colorimetric data supplied for the samples.
  5. These recommendations provide smoothed curves that supersede those given in references 10 and 11 in ASA War Standard (3).
  6. Refers to Munsell-Sloan-Godlove value-reflectance relation, since the new recommended value scale had not then been developed.

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