Please use this identifier to cite or link to this item:
Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Cue combination of conflicting color and luminance edges
Author(s): Sharman, Rebecca J
McGraw, Paul V
Peirce, Jonathan W
Contact Email:
Keywords: Color
cue combination
Issue Date: Dec-2015
Date Deposited: 7-Jan-2016
Citation: Sharman RJ, McGraw PV & Peirce JW (2015) Cue combination of conflicting color and luminance edges. i-Perception, 6 (6), Art. No.: 2041669515621215.
Abstract: Abrupt changes in the color or luminance of a visual image potentially indicate object boundaries. Here, we consider how these cues to the visual “edge” location are combined when they conflict. We measured the extent to which localization of a compound edge can be predicted from a simple maximum likelihood estimation model using the reliability of chromatic (L−M) and luminance signals alone. Maximum likelihood estimation accurately predicted thepatternof results across a range of contrasts. Predictions consistently overestimated the relative influence of the luminance cue; although L−M is often considered a poor cue for localization, it was used more than expected. This need not indicate that the visual system is suboptimal but that its priors about which cue is moreusefulare not flat. This may be because, although strong changes in chromaticity typically represent object boundaries, changes in luminance can be caused by either a boundary or a shadow.
DOI Link: 10.1177/2041669515621215
Rights: This article is distributed under the terms of the Creative Commons Attribution 3.0 License ( which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (
Licence URL(s):

Files in This Item:
File Description SizeFormat 
Sharman2015.pdfFulltext - Published Version354.98 kBAdobe PDFView/Open

This item is protected by original copyright

A file in this item is licensed under a Creative Commons License Creative Commons

Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

The metadata of the records in the Repository are available under the CC0 public domain dedication: No Rights Reserved

If you believe that any material held in STORRE infringes copyright, please contact providing details and we will remove the Work from public display in STORRE and investigate your claim.