Independent mechanisms for bright and dark image features in a stereo correspondence task

A pioneering study by J. M. Harris and A. J. Parker (1995) found that disparity judgments using random-dot stereograms were better for stimuli composed of mixed bright and dark dots than when the dots were all bright or all dark. They attribute this to an improvement in stereo correspondence. This r...

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Detalles Bibliográficos
Autores: Read, Jenny C A, Vaz, Xavier A, Serrano Pedraza, Ignacio
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/44952
Acceso en línea:https://hdl.handle.net/20.500.14352/44952
Access Level:acceso abierto
Palabra clave:159.9.07
159.93
535
Stereopsis
Binocular vision
Stereo correspondence
Occlusion
Efficiency
Ideal observer
Signal detection theory
Energy models
Psicología experimental
Percepción
Óptica oftálmica
6106 Psicología Experimental
6106.09 Procesos de Percepción
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oai_identifier_str oai:docta.ucm.es:20.500.14352/44952
network_acronym_str ES
network_name_str España
repository_id_str
spelling Independent mechanisms for bright and dark image features in a stereo correspondence taskRead, Jenny C AVaz, Xavier ASerrano Pedraza, Ignacio159.9.07159.93535StereopsisBinocular visionStereo correspondenceOcclusionEfficiencyIdeal observerSignal detection theoryEnergy modelsPsicología experimentalPercepciónÓptica oftálmica6106 Psicología Experimental6106.09 Procesos de PercepciónA pioneering study by J. M. Harris and A. J. Parker (1995) found that disparity judgments using random-dot stereograms were better for stimuli composed of mixed bright and dark dots than when the dots were all bright or all dark. They attribute this to an improvement in stereo correspondence. This result is hard to explain within current models of how stereo correspondence is achieved. However, their experiment varied task difficulty by adding disparity noise. We wondered if this might challenge mechanisms subsequent to the solution of the correspondence problem rather than mechanisms that solve the correspondence problem itself. If so, this would avoid the need to modify current models of stereo correspondence. We therefore repeated Harris and Parker's experiment using interocular decorrelation to vary task difficulty. This technique is believed to probe stereo correspondence more specifically. We observed the efficiency increase reported by Harris and Parker for mixed-polarity dots both using their original technique of disparity noise and using interocular decorrelation. We show that this effect cannot be accounted for by the stereo energy or by simple modifications of it. Our results confirm Harris and Parker's original conclusion that mixed-polarity dots specifically benefit stereo correspondence and point up the challenge to current models of this process.Universidad Complutense de Madrid20112011-01-0120112011-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/44952reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/449522026-06-02T12:44:21Z
dc.title.none.fl_str_mv Independent mechanisms for bright and dark image features in a stereo correspondence task
title Independent mechanisms for bright and dark image features in a stereo correspondence task
spellingShingle Independent mechanisms for bright and dark image features in a stereo correspondence task
Read, Jenny C A
159.9.07
159.93
535
Stereopsis
Binocular vision
Stereo correspondence
Occlusion
Efficiency
Ideal observer
Signal detection theory
Energy models
Psicología experimental
Percepción
Óptica oftálmica
6106 Psicología Experimental
6106.09 Procesos de Percepción
title_short Independent mechanisms for bright and dark image features in a stereo correspondence task
title_full Independent mechanisms for bright and dark image features in a stereo correspondence task
title_fullStr Independent mechanisms for bright and dark image features in a stereo correspondence task
title_full_unstemmed Independent mechanisms for bright and dark image features in a stereo correspondence task
title_sort Independent mechanisms for bright and dark image features in a stereo correspondence task
dc.creator.none.fl_str_mv Read, Jenny C A
Vaz, Xavier A
Serrano Pedraza, Ignacio
author Read, Jenny C A
author_facet Read, Jenny C A
Vaz, Xavier A
Serrano Pedraza, Ignacio
author_role author
author2 Vaz, Xavier A
Serrano Pedraza, Ignacio
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 159.9.07
159.93
535
Stereopsis
Binocular vision
Stereo correspondence
Occlusion
Efficiency
Ideal observer
Signal detection theory
Energy models
Psicología experimental
Percepción
Óptica oftálmica
6106 Psicología Experimental
6106.09 Procesos de Percepción
topic 159.9.07
159.93
535
Stereopsis
Binocular vision
Stereo correspondence
Occlusion
Efficiency
Ideal observer
Signal detection theory
Energy models
Psicología experimental
Percepción
Óptica oftálmica
6106 Psicología Experimental
6106.09 Procesos de Percepción
description A pioneering study by J. M. Harris and A. J. Parker (1995) found that disparity judgments using random-dot stereograms were better for stimuli composed of mixed bright and dark dots than when the dots were all bright or all dark. They attribute this to an improvement in stereo correspondence. This result is hard to explain within current models of how stereo correspondence is achieved. However, their experiment varied task difficulty by adding disparity noise. We wondered if this might challenge mechanisms subsequent to the solution of the correspondence problem rather than mechanisms that solve the correspondence problem itself. If so, this would avoid the need to modify current models of stereo correspondence. We therefore repeated Harris and Parker's experiment using interocular decorrelation to vary task difficulty. This technique is believed to probe stereo correspondence more specifically. We observed the efficiency increase reported by Harris and Parker for mixed-polarity dots both using their original technique of disparity noise and using interocular decorrelation. We show that this effect cannot be accounted for by the stereo energy or by simple modifications of it. Our results confirm Harris and Parker's original conclusion that mixed-polarity dots specifically benefit stereo correspondence and point up the challenge to current models of this process.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-01-01
2011
2011-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/44952
url https://hdl.handle.net/20.500.14352/44952
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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