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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 10, Iss. 1 — Jan. 1, 1971
  • pp: 14–18

Adjustment of the Munsell-Value and W*-Scales to Uniform Lightness Steps for Various Background Reflectances

C. C. Semmelroth  »View Author Affiliations


Applied Optics, Vol. 10, Issue 1, pp. 14-18 (1971)
http://dx.doi.org/10.1364/AO.10.000014


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Abstract

For background reflectances taken equal to, or slightly lower than, the specimen reflectances, the Munsell-value, V, and the CIE 1964, W*, scales are found to be essentially linear with a power formulation for lightness previously shown to accord with lightness-spacing data for a wide variety of specimen and background reflectances. Adjustments required to make the Munsell-value function accord precisely with the power formulation for this background condition are all less than 0.2 of a Munsell-value step between 1/ and 9/. The power formulation is used to construct a table to show in Munsell terms the influence of background reflectance on perceived lightness for all combinations of specimen and background reflectance including Takasaki crispening for specimen reflectance approaching that of the background.

© 1971 Optical Society of America

History
Original Manuscript: July 27, 1970
Published: January 1, 1971

Citation
C. C. Semmelroth, "Adjustment of the Munsell-Value and W*-Scales to Uniform Lightness Steps for Various Background Reflectances," Appl. Opt. 10, 14-18 (1971)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-10-1-14


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References

  1. CIE Proc. 1963, Vienna (Paris, Bureau Central CIE, 1964), p. 113.
  2. J. H. Ladd, J. E. Pinney, Proc. IRE 43, 1137 (1955).
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  8. T. Kaneko, Acta Chromatica 1, 103 (1963).
  9. D. B. Judd, ‘Palette,’ No. 29, (1968)/30, (1968)/31, (1969); Color Eng. 8, No. 2, 36 (1970).
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  11. S. S. Stevens, J. C. Stevens, Harvard University Psychophysical Project Report PPR-246, Cambridge, Massachusetts (1960).

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