Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/22653
Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Cue combination of conflicting color and luminance edges
Authors: Sharman, Rebecca J
McGraw, Paul V
Peirce, Jonathan W
Contact Email: rebecca.sharman@stir.ac.uk
Keywords: Color
luminance
conflicting
edges
cue combination
Issue Date: Dec-2015
Publisher: SAGE
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.
Type: Journal Article
URI: http://hdl.handle.net/1893/22653
DOI Link: http://dx.doi.org/10.1177/2041669515621215
Rights: This article is distributed under the terms of the Creative Commons Attribution 3.0 License (http://www.creativecommons.org/licenses/by/3.0/) 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 (https://us.sagepub.com/en-us/nam/open-access-at-sage).
Affiliation: Psychology
University of Nottingham
University of Nottingham

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