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Conference Paper: The effect of specular highlights on 3D shape discrimination for monocular and binocular images

TitleThe effect of specular highlights on 3D shape discrimination for monocular and binocular images
Authors
KeywordsPsychology
Issue Date2013
PublisherZhongguo Kexueyuan Xinli Yanjiuso. The Journal's web site is located at http://www.wiley.com/WileyCDA/WileyTitle/productCd-PCHJ.html
Citation
The 9th Asia-Pacific Conference on Vision (APCV 2013), Suzhou, China, 5-8 July 2013. In PsyCh Journal, 2013, v. 2 suppl. S1, p. 37-38, abstract D2-018 How to Cite?
AbstractSpecular highlights provide a source of information about the 3D shape of a shiny object, which can allow accurate 3D shape discrimination from a monocular image (Norman, Todd & Orban, 2004). However, highlights pose a challenge for analysis of stereo shape information because they have binocular disparity relative to the surface of an object. If highlights were misinterpreted as matte shading or surface texture, highlight disparities would indicate the wrong 3D shape. In this study, we tested whether highlights provide a similar benefit under binocular and monocular viewing conditions, and whether the effect of highlights is modulated by the presence of surface texture, which might help to identify highlights. Observers performed sequential 3D shape discrimination of random, smoothly-curved symmetric objects. To prevent a 2D strategy, comparison objects were rotated in depth by 10° and rendered with a different light source direction. Objects were presented monocularly or binocularly, and rendered with either: diffuse shading only, shading and highlights, shading and texture, or shading with texture and highlights. We found that highlights provided a similar benefit in both monocular and binocular conditions, and this benefit not modulated by the presence of surface texture. Stereo provided a similar benefit with and without highlights. There was no evidence that stereo viewing interfered with use of highlights, even when surface texture was absent, and the presence of highlights did not interfere with use of stereo information. Despite the geometric challenge posed by stereo highlights, the visual system appears to be able to make effective use of both sources of information.
DescriptionThis journal suppl. entitled: Special Issue: The 9th Asia-Pacific Conference on Vision (APCV 2013)
Persistent Identifierhttp://hdl.handle.net/10722/198216
ISSN

 

DC FieldValueLanguage
dc.contributor.authorSaunders, JAen_US
dc.contributor.authorLee, YLen_US
dc.date.accessioned2014-06-25T02:55:40Z-
dc.date.available2014-06-25T02:55:40Z-
dc.date.issued2013en_US
dc.identifier.citationThe 9th Asia-Pacific Conference on Vision (APCV 2013), Suzhou, China, 5-8 July 2013. In PsyCh Journal, 2013, v. 2 suppl. S1, p. 37-38, abstract D2-018en_US
dc.identifier.issn2046-0260-
dc.identifier.urihttp://hdl.handle.net/10722/198216-
dc.descriptionThis journal suppl. entitled: Special Issue: The 9th Asia-Pacific Conference on Vision (APCV 2013)-
dc.description.abstractSpecular highlights provide a source of information about the 3D shape of a shiny object, which can allow accurate 3D shape discrimination from a monocular image (Norman, Todd & Orban, 2004). However, highlights pose a challenge for analysis of stereo shape information because they have binocular disparity relative to the surface of an object. If highlights were misinterpreted as matte shading or surface texture, highlight disparities would indicate the wrong 3D shape. In this study, we tested whether highlights provide a similar benefit under binocular and monocular viewing conditions, and whether the effect of highlights is modulated by the presence of surface texture, which might help to identify highlights. Observers performed sequential 3D shape discrimination of random, smoothly-curved symmetric objects. To prevent a 2D strategy, comparison objects were rotated in depth by 10° and rendered with a different light source direction. Objects were presented monocularly or binocularly, and rendered with either: diffuse shading only, shading and highlights, shading and texture, or shading with texture and highlights. We found that highlights provided a similar benefit in both monocular and binocular conditions, and this benefit not modulated by the presence of surface texture. Stereo provided a similar benefit with and without highlights. There was no evidence that stereo viewing interfered with use of highlights, even when surface texture was absent, and the presence of highlights did not interfere with use of stereo information. Despite the geometric challenge posed by stereo highlights, the visual system appears to be able to make effective use of both sources of information.en_US
dc.languageengen_US
dc.publisherZhongguo Kexueyuan Xinli Yanjiuso. The Journal's web site is located at http://www.wiley.com/WileyCDA/WileyTitle/productCd-PCHJ.html-
dc.relation.ispartofPsyCh Journalen_US
dc.rightsAuthor holds the copyright-
dc.subjectPsychology-
dc.titleThe effect of specular highlights on 3D shape discrimination for monocular and binocular imagesen_US
dc.typeConference_Paperen_US
dc.identifier.emailSaunders, JA: jsaun@hku.hken_US
dc.identifier.emailLee, YL: younglee@hku.hk-
dc.identifier.authoritySaunders, JA=rp00638en_US
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1002/pchj.32-
dc.identifier.hkuros229481en_US
dc.identifier.volume2-
dc.identifier.issuesuppl. S1-
dc.identifier.spage37-
dc.identifier.epage38-
dc.publisher.placeChina-
dc.customcontrol.immutablesml 141212-

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