Abstract

The rationale for color opponency is investigated. A principle of optimal discrimination of visual information is introduced: If two visual variables are kept fixed, the third one, left free, must vary as much as possible. We prove that, if satisfied, the principle requires the existence of two chromatic functions, which are under the reference source E (corresponding to the equal-energy spectral distribution function), orthogonal with respect to a certain inner product, so that given one function, the other one is determined, apart from a multiplicative constant. Experimental chromatic functions are recovered. Two almost-illuminant-independent chromatic variables, η and ζ, are constructed from the achromatic variables in the companion paper.

© 1997 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Visual system-response functions and estimating reflectance

C. van Trigt
J. Opt. Soc. Am. A 14(4) 741-755 (1997)

Metameric blacks and estimating reflectance

C. van Trigt
J. Opt. Soc. Am. A 11(3) 1003-1024 (1994)

Open problems in color constancy: discussion

C. van Trigt
J. Opt. Soc. Am. A 31(2) 338-347 (2014)

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 (2)

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 (68)

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

Metrics

You do not have subscription access to this journal. Article level metrics 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