Role of color memory in successive color constancy.

Full Abstract

We investigate color constancy for real 2D paper samples using a successive matching paradigm in which the observer memorizes a reference surface color under neutral illumination and after a temporal interval selects a matching test surface under the same or different illumination. We find significant effects of the illumination, reference surface, and their interaction on the matching error. We characterize the matching error in the absence of illumination change as the "pure color memory shift" and introduce a new index for successive color constancy that compares this shift against the matching error under changing illumination. The index also incorporates the vector direction of the matching errors in chromaticity space, unlike the traditional constancy index. With this index, we find that color constancy is nearly perfect.

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Author information

Author/s: Ling, Yazhu (Y); Hurlbert, Anya (A);

Affiliation: Institute of Neuroscience, Newcastle University, Framlington Place, Newcastle upon Tyne, NE2 4HH, UK. yazhu.ling(-atsign-)ncl.ac.uk

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: Journal of the Optical Society of America. A, Optics, image science, and vision (J Opt Soc Am A Opt Image Sci Vis), published in United States. (Language: eng)

Reference: 2008-Jun; vol 25 (issue 6) : pp 1215-26

Dates: Created 2008/06/02; Completed 2008/08/01;

PMID: 18516130, status: MEDLINE (last retrieval date: 11/6/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adaptation, Ocular - physiology
Color
Color Perception - physiology

Humans
Lighting
Memory, Short-Term - physiology

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