Abstract

In previous papers a correlate for lightness (<i>L</i>) was found in terms of CIE-tristimulus values for colors of approximately constant luminous reflectance (<i>Y</i>). <i>L</i> could be expressed by a second degree equation with <i>X</i>, <i>Y</i>, <i>Z</i> as variables. In the present study about 100 samples were selected to cover the gamut of existing surface colors. The lightness-equivalent neutrals were estimated by three observers for these colors under the same conditions as described in a previous paper. The original type of equation could not be used to fit the observational data because of the large differences in luminous reflectance among the samples. However, the <i>L</i>/<i>Y</i> ratios could be expressed by a second degree equation with chromaticity coordinates <i>x</i>, <i>y</i> as variables. This type of equation appears to be valid for all reflecting surface colors.

PDF Article

References

  • View by:
  • |
  • |

  1. C. L. Sanders and G. Wyszecki, J. Opt. Soc. Am. 47, 398 (1957).
  2. G. Wyszecki and C. L. Sanders, J. Opt. Soc. Am. 47, 840 (1957).
  3. R. B. Bedford and G. Wyszecki, J. Opt. Soc. Am. (to be published).

Bedford, R. B.

R. B. Bedford and G. Wyszecki, J. Opt. Soc. Am. (to be published).

Sanders, C. L.

C. L. Sanders and G. Wyszecki, J. Opt. Soc. Am. 47, 398 (1957).

G. Wyszecki and C. L. Sanders, J. Opt. Soc. Am. 47, 840 (1957).

Wyszecki, G.

C. L. Sanders and G. Wyszecki, J. Opt. Soc. Am. 47, 398 (1957).

G. Wyszecki and C. L. Sanders, J. Opt. Soc. Am. 47, 840 (1957).

R. B. Bedford and G. Wyszecki, J. Opt. Soc. Am. (to be published).

Other (3)

C. L. Sanders and G. Wyszecki, J. Opt. Soc. Am. 47, 398 (1957).

G. Wyszecki and C. L. Sanders, J. Opt. Soc. Am. 47, 840 (1957).

R. B. Bedford and G. Wyszecki, J. Opt. Soc. Am. (to be published).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.