Abstract

The color-matching property of lamps was appraised by use of Wyszecki’s 12 gray object colors that are metameric with respect to CIE standard illuminant C and the CIE 1931 color-matching functions. The color-matching property of a test source was assessed in terms of its failure to preserve the metameric match between the 12 gray object colors. The purpose of this study is to investigate whether these 12 gray object colors are sufficiently representative of the infinite number of metameric grays that are conceivable with respect to the same conditions. By use of reconstituted spectral distributions of fluorescent lamps with different values of the general color-rendering index but with the same chromaticities as CIE standard source C, the failure to preserve the metameric match was analyzed for the infinite number of metameric grays. The effective radius RC of the computed confidence ellipsoid (a reasonable index of the color-matching property of a given test lamp derived in the present study) has an extremely high correlation with the color-matching property of the test lamp assessed by use of the 12 gray object colors. This confirms the effectiveness of Wyszecki’s 12 metameric gray object colors for appraising the color-matching property of light sources.

© 1972 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Counting Metameric Object Colors

W. S. Stiles and G. W. Wyszecki
J. Opt. Soc. Am. 52(3) 313-328 (1962)

A Measure for the Total Difference of Two Sets of Color-Mixture Functions

Günter Wyszecki
J. Opt. Soc. Am. 49(8) 811-814 (1959)

Differential color thresholds from metameric matches: experimental results concerning failures of colorimetric additivity

E. Hita, L. Jiménez del Barco, and J. Romero
J. Opt. Soc. Am. A 3(8) 1203-1209 (1986)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (16)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription