Perceptual learning of categorical color constancy and the role of illuminant familiarity

J. A. Richardson; Ian R. L. Davies

doi:10.1117/12.206552

10 April 1995 Perceptual learning of categorical color constancy and the role of illuminant familiarity

J. A. Richardson, Ian R. L. Davies

Proceedings Volume 2414, Device-Independent Color Imaging II; (1995) https://doi.org/10.1117/12.206552
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1995, San Jose, CA, United States

Abstract

It is known that colour constancy is more robust when the changes in illumination are restricted to the phases of daylight than it is for changes in most arti ficial 1 ight sources, suggesting that the ability to correctly identify surface colours may depend in part, on the observers familiarity with the light source. The present study examines whether a relatively short period of practice in judging surface colours under different illuminants leads to an improvement in colour constancy, and if so whether the improvement is restricted to the illuminants under which the judgeinents were made. Five subjects were asked to identify by name (chosen from 11 basic colour terms) a total of 70 colour patches under 4 different broad band illuininants. Subjects then named each colour patch a further 20 times distributed over a 2 week period, 10 times under each of two of the broad band illuminants. Finally, subjects again named the patches under all 4 illuminants. It was found that the degree of categorical colour constancy under broad band illumination was significantly better after the learning trials, and that the improvement was greater for the illuminants used in the learning trials.

Citation Download Citation

J. A. Richardson and Ian R. L. Davies "Perceptual learning of categorical color constancy and the role of illuminant familiarity", Proc. SPIE 2414, Device-Independent Color Imaging II, (10 April 1995); https://doi.org/10.1117/12.206552

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available