Image:Lightness approximations.svg

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Lightness_approximations.svg‎ (SVG file, nominally 600 × 480 pixels, file size: 21 KB)

[edit] Summary

Four Lightness scales plotted as functions of normalized luminance. Munsell Renotation; [1] a fifth-order polynomial in Munsell Value; Hunter's rational function; [2] Square Root; [3] and Ladd and Pinney's modified cube root[4] are shown. Ladd and Pinney's modified cube root is truncated (no negative values appear).

[edit] Licensing

Creative Commons: Some Rights Reserved
BYSA		 This work is licensed under the Creative Commons Attribution-ShareAlike 2.5 License.

[edit] References

  1. ^ S M Newhall, D Nickerson, D B Judd, "Final report of the OSA subcommittee on spacing of the Munsell colors." Journal of the Optical Society of America, 33:385 (1943).
  2. ^ Dorothy Nickerson, "Munsell renotation used to study color space of Hunter and Adams." Journal of the Optical Society of America, 40:1:85 (1950).
  3. ^ I G Priest, K S Gibson, H J McNichols, "An examination of the Munsell color system. I: spectral and total reflection and the Munsell scale of Value." Technical paper 167, United States Bureau of Standards, 1920.
  4. ^ J H Ladd and J E Pinney, "Empirical relationships with the Munsell Value scale." Proceedings of the Institute of Radio Engineers, 43:1137 (1955).

File history

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current22:58, 5 May 2007600×480 (21 KB)Lovibond (Talk | contribs) (Created by me, 2007-05-05.)

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