Seeing through transparent layers

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buir.contributor.authorDövencioğlu, Dicle N.
buir.contributor.authorDoerschner, Katja
dc.citation.epage19en_US
dc.citation.issueNumber9en_US
dc.citation.spage1en_US
dc.citation.volumeNumber18en_US
dc.contributor.authorDövencioğlu, Dicle N.en_US
dc.contributor.authorVan Doorn, A.en_US
dc.contributor.authorKoenderink, J.en_US
dc.contributor.authorDoerschner, Katjaen_US
dc.date.accessioned2019-02-21T16:07:00Z
dc.date.available2019-02-21T16:07:00Z
dc.date.issued2018en_US
dc.departmentDepartment of Psychologyen_US
dc.departmentNational Magnetic Resonance Research Center (UMRAM)en_US
dc.description.abstractThe human visual system is remarkably good at decomposing local and global deformations in the flow of visual information into different perceptual layers, a critical ability for daily tasks such as driving through rain or fog or catching that evasive trout. In these scenarios, changes in the visual information might be due to a deforming object or deformations due to a transparent medium, such as structured glass or water, or a combination of these. How does the visual system use image deformations to make sense of layering due to transparent materials? We used eidolons to investigate equivalence classes for perceptually similar transparent layers. We created a stimulus space for perceptual equivalents of a fiducial scene by systematically varying the local disarray parameters reach and grain. This disarray in eidolon space leads to distinct impressions of transparency, specifically, high reach and grain values vividly resemble water whereas smaller grain values appear diffuse like structured glass. We asked observers to adjust image deformations so that the objects in the scene looked like they were seen (a) under water, (b) behind haze, or (c) behind structured glass. Observers adjusted image deformation parameters by moving the mouse horizontally (grain) and vertically (reach). For two conditions, water and glass, we observed high intraobserver consistency: responses were not random. Responses yielded a concentrated equivalence class for water and structured glass.
dc.description.provenanceMade available in DSpace on 2019-02-21T16:07:00Z (GMT). No. of bitstreams: 1 Bilkent-research-paper.pdf: 222869 bytes, checksum: 842af2b9bd649e7f548593affdbafbb3 (MD5) Previous issue date: 2018en
dc.description.sponsorshipThis research was supported by a Sofja Kovalevskaja Award to KD from the Alexander von Humboldt Foundation, sponsored by the German Federal Ministry for Education and Research.
dc.identifier.doi10.1167/18.9.25
dc.identifier.issn1534-7362
dc.identifier.urihttp://hdl.handle.net/11693/50341
dc.language.isoEnglish
dc.publisherAssociation for Research in Vision and Ophthalmology
dc.relation.isversionofhttps://doi.org/10.1167/18.9.25
dc.relation.projectAlexander von Humboldt-Stiftung
dc.rightsinfo:eu-repo/semantics/openAccess
dc.source.titleJournal of Visionen_US
dc.subjectEidolon factoryen_US
dc.subjectImage disarrayen_US
dc.subjectImage distortionen_US
dc.subjectLayer decompositionen_US
dc.subjectSurface reflectanceen_US
dc.subjectTransparencyen_US
dc.titleSeeing through transparent layersen_US
dc.typeArticleen_US

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