Context-dependent judgments of color that might allow color constancy in scenes with multiple regions of illumination.
J Opt Soc Am A Opt Image Sci Vis
; 29(2): A247-57, 2012 Feb 01.
Article
in En
| MEDLINE
| ID: mdl-22330386
ABSTRACT
For a color-constant observer, a change in the spectral composition of the illumination is accompanied by a corresponding change in the chromaticity associated with an achromatic percept. However, maintaining color constancy for different regions of illumination within a scene implies the maintenance of multiple perceptual references. We investigated the features of a scene that enable the maintenance of separate perceptual references for two displaced but overlapping chromaticity distributions. The time-averaged, retinotopically localized stimulus was the primary determinant of color appearance judgments. However, spatial separation of test samples additionally served as a symbolic cue that allowed observers to maintain two separate perceptual references.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Lighting
/
Color Perception
/
Judgment
Limits:
Female
/
Humans
/
Male
Language:
En
Journal:
J Opt Soc Am A Opt Image Sci Vis
Journal subject:
OFTALMOLOGIA
Year:
2012
Type:
Article
Affiliation country:
United kingdom