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Stereoscopic Offset Makes Objects Easier to Recognize
Binocular vision is obviously useful for depth perception, but it might also enhance other components of visual processing, such as image segmentation. We used naturalistic images to determine whether giving an object a stereoscopic offset of 15-120 arcmin of crossed disparity relative to its backgr...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4469586/ https://www.ncbi.nlm.nih.gov/pubmed/26079788 http://dx.doi.org/10.1371/journal.pone.0129101 |
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author | Caziot, Baptiste Backus, Benjamin T. |
author_facet | Caziot, Baptiste Backus, Benjamin T. |
author_sort | Caziot, Baptiste |
collection | PubMed |
description | Binocular vision is obviously useful for depth perception, but it might also enhance other components of visual processing, such as image segmentation. We used naturalistic images to determine whether giving an object a stereoscopic offset of 15-120 arcmin of crossed disparity relative to its background would make the object easier to recognize in briefly presented (33-133 ms), temporally masked displays. Disparity had a beneficial effect across a wide range of disparities and display durations. Most of this benefit occurred whether or not the stereoscopic contour agreed with the object’s luminance contour. We attribute this benefit to an orienting of spatial attention that selected the object and its local background for enhanced 2D pattern processing. At longer display durations, contour agreement provided an additional benefit, and a separate experiment using random-dot stimuli confirmed that stereoscopic contours plausibly contributed to recognition at the longer display durations in our experiment. We conclude that in real-world situations binocular vision confers an advantage not only for depth perception, but also for recognizing objects from their luminance patterns and bounding contours. |
format | Online Article Text |
id | pubmed-4469586 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-44695862015-06-22 Stereoscopic Offset Makes Objects Easier to Recognize Caziot, Baptiste Backus, Benjamin T. PLoS One Research Article Binocular vision is obviously useful for depth perception, but it might also enhance other components of visual processing, such as image segmentation. We used naturalistic images to determine whether giving an object a stereoscopic offset of 15-120 arcmin of crossed disparity relative to its background would make the object easier to recognize in briefly presented (33-133 ms), temporally masked displays. Disparity had a beneficial effect across a wide range of disparities and display durations. Most of this benefit occurred whether or not the stereoscopic contour agreed with the object’s luminance contour. We attribute this benefit to an orienting of spatial attention that selected the object and its local background for enhanced 2D pattern processing. At longer display durations, contour agreement provided an additional benefit, and a separate experiment using random-dot stimuli confirmed that stereoscopic contours plausibly contributed to recognition at the longer display durations in our experiment. We conclude that in real-world situations binocular vision confers an advantage not only for depth perception, but also for recognizing objects from their luminance patterns and bounding contours. Public Library of Science 2015-06-16 /pmc/articles/PMC4469586/ /pubmed/26079788 http://dx.doi.org/10.1371/journal.pone.0129101 Text en https://creativecommons.org/publicdomain/zero/1.0/ This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. |
spellingShingle | Research Article Caziot, Baptiste Backus, Benjamin T. Stereoscopic Offset Makes Objects Easier to Recognize |
title | Stereoscopic Offset Makes Objects Easier to Recognize |
title_full | Stereoscopic Offset Makes Objects Easier to Recognize |
title_fullStr | Stereoscopic Offset Makes Objects Easier to Recognize |
title_full_unstemmed | Stereoscopic Offset Makes Objects Easier to Recognize |
title_short | Stereoscopic Offset Makes Objects Easier to Recognize |
title_sort | stereoscopic offset makes objects easier to recognize |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4469586/ https://www.ncbi.nlm.nih.gov/pubmed/26079788 http://dx.doi.org/10.1371/journal.pone.0129101 |
work_keys_str_mv | AT caziotbaptiste stereoscopicoffsetmakesobjectseasiertorecognize AT backusbenjamint stereoscopicoffsetmakesobjectseasiertorecognize |