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dc.contributor.authorDövencioğlu, D.N.en_US
dc.contributor.authorWijntjes, M.W.A.en_US
dc.contributor.authorBen-Shahar O.en_US
dc.contributor.authorDoerschner, K.en_US
dc.date.accessioned2016-02-08T09:36:40Z
dc.date.available2016-02-08T09:36:40Z
dc.date.issued2015en_US
dc.identifier.issn0042-6989
dc.identifier.urihttp://hdl.handle.net/11693/20859
dc.description.abstractIn dynamic scenes, relative motion between the object, the observer, and/or the environment projects as dynamic visual information onto the retina (optic flow) that facilitates 3D shape perception. When the object is diffusely reflective, e.g. a matte painted surface, this optic flow is directly linked to object shape, a property found at the foundations of most traditional shape-from-motion (SfM) schemes. When the object is specular, the corresponding specular flow is related to shape curvature, a regime change that challenges the visual system to determine concurrently both the shape and the distortions of the (sometimes unknown) environment reflected from its surface. While human observers are able to judge the global 3D shape of most specular objects, shape-from-specular-flow (SFSF) is not veridical. In fact, recent studies have also shown systematic biases in the perceived motion of such objects. Here we focus on the perception of local shape from specular flow and compare it to that of matte-textured rotating objects. Observers judged local surface shape by adjusting a rotation and scale invariant shape index probe. Compared to shape judgments of static objects we find that object motion decreases intra-observer variability in local shape estimation. Moreover, object motion introduces systematic changes in perceived shape between matte-textured and specular conditions. Taken together, this study provides a new insight toward the contribution of motion and surface material to local shape perception. © 2015 The Authors.en_US
dc.language.isoEnglishen_US
dc.source.titleVision Researchen_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.visres.2015.01.008en_US
dc.subjectShape from motionen_US
dc.subjectShape from specular flowen_US
dc.subjectSurface materialsen_US
dc.subjectArticleen_US
dc.subjecthumanen_US
dc.subjecthuman experimenten_US
dc.subjectlocal second order shape perceptionen_US
dc.subjectnormal humanen_US
dc.subjectperceptionen_US
dc.subjectphysical parametersen_US
dc.subjectpriority journalen_US
dc.subjectretinaen_US
dc.subjectstimulus responseen_US
dc.subjectsurface reflectanceen_US
dc.subjecttask performanceen_US
dc.subjectvisual systemen_US
dc.titleEffects of surface reflectance on local second order shape estimation in dynamic scenesen_US
dc.typeArticleen_US
dc.departmentDepartment of Psychologyen_US
dc.citation.spage218en_US
dc.citation.epage230en_US
dc.citation.volumeNumber115en_US
dc.identifier.doi10.1016/j.visres.2015.01.008en_US
dc.publisherElsevier Ltden_US


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