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Article: Do humans optimally integrate stereo and texture information for judgments of surface slant?

TitleDo humans optimally integrate stereo and texture information for judgments of surface slant?
Authors
Issue Date2003
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/visres
Citation
Vision Research, 2003, v. 43 n. 24, p. 2539-2558 How to Cite?
AbstractAn optimal linear system for integrating visual cues to 3D surface geometry weights cues in inverse proportion to their uncertainty. The problem of integrating texture and stereo information for judgments of planar surface slant provides a strong test of optimality in human perception. Since the accuracy of slant from texture judgments changes by an order of magnitude from low to high slants, optimality predicts corresponding changes in cue weights as a function of surface slant. Furthermore, since humans show significant individual differences in their abilities to use both texture and stereo information for judgments of 3D surface geometry, the problem admits the stronger test that individual differences in subjects' thresholds for discriminating slant from the individual cues should predict individual differences in cue weights. We tested both predictions by measuring slant discrimination thresholds and stereo/texture cue weights as a function of surface slant for multiple subjects. The results bear out both predictions of optimality, with the exception of an apparent slight under-weighting of texture information. This may be accounted for by factors specific to the stimuli used to isolate stereo information in the experiments. Taken together, the results are consistent with the hypothesis that humans optimally combine the two cues to surface slant, with cue weights proportional to the subjective reliability of the cues. © 2003 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/168974
ISSN
2015 Impact Factor: 1.776
2015 SCImago Journal Rankings: 0.957
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorKnill, DCen_US
dc.contributor.authorSaunders, JAen_US
dc.date.accessioned2012-10-08T03:40:20Z-
dc.date.available2012-10-08T03:40:20Z-
dc.date.issued2003en_US
dc.identifier.citationVision Research, 2003, v. 43 n. 24, p. 2539-2558en_US
dc.identifier.issn0042-6989en_US
dc.identifier.urihttp://hdl.handle.net/10722/168974-
dc.description.abstractAn optimal linear system for integrating visual cues to 3D surface geometry weights cues in inverse proportion to their uncertainty. The problem of integrating texture and stereo information for judgments of planar surface slant provides a strong test of optimality in human perception. Since the accuracy of slant from texture judgments changes by an order of magnitude from low to high slants, optimality predicts corresponding changes in cue weights as a function of surface slant. Furthermore, since humans show significant individual differences in their abilities to use both texture and stereo information for judgments of 3D surface geometry, the problem admits the stronger test that individual differences in subjects' thresholds for discriminating slant from the individual cues should predict individual differences in cue weights. We tested both predictions by measuring slant discrimination thresholds and stereo/texture cue weights as a function of surface slant for multiple subjects. The results bear out both predictions of optimality, with the exception of an apparent slight under-weighting of texture information. This may be accounted for by factors specific to the stimuli used to isolate stereo information in the experiments. Taken together, the results are consistent with the hypothesis that humans optimally combine the two cues to surface slant, with cue weights proportional to the subjective reliability of the cues. © 2003 Elsevier Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/visresen_US
dc.relation.ispartofVision Researchen_US
dc.subject.meshCuesen_US
dc.subject.meshDepth Perception - Physiologyen_US
dc.subject.meshForm Perception - Physiologyen_US
dc.subject.meshHumansen_US
dc.subject.meshJudgment - Physiologyen_US
dc.subject.meshOptical Illusionsen_US
dc.subject.meshOrientation - Physiologyen_US
dc.subject.meshPattern Recognition, Visual - Physiologyen_US
dc.subject.meshVisual Fieldsen_US
dc.titleDo humans optimally integrate stereo and texture information for judgments of surface slant?en_US
dc.typeArticleen_US
dc.identifier.emailSaunders, JA:jsaun@hkucc.hku.hken_US
dc.identifier.authoritySaunders, JA=rp00638en_US
dc.description.naturelink_to_OA_fulltexten_US
dc.identifier.doi10.1016/S0042-6989(03)00458-9en_US
dc.identifier.pmid13129541-
dc.identifier.scopuseid_2-s2.0-0642341849en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0642341849&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume43en_US
dc.identifier.issue24en_US
dc.identifier.spage2539en_US
dc.identifier.epage2558en_US
dc.identifier.isiWOS:000185577700006-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridKnill, DC=7003848696en_US
dc.identifier.scopusauthoridSaunders, JA=7402341514en_US
dc.identifier.citeulike5452712-

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