Depth compression based on mis-scaling of binocular disparity may contribute to angular expansion in perceived optical slant
Identifieur interne : 002991 ( Ncbi/Curation ); précédent : 002990; suivant : 002992Depth compression based on mis-scaling of binocular disparity may contribute to angular expansion in perceived optical slant
Auteurs : Zhi Li [États-Unis] ; Frank H. Durgin [États-Unis]Source :
- Journal of Vision [ 1534-7362 ] ; 2013.
Abstract
Three studies, involving a total of 145 observers examined quantitative theories of the overestimation of perceived optical slant. The first two studies investigated the depth/width anisotropies on positive and negative slant in both pitch and yaw at 2 and 8 m using calibrated immersive virtual environments. Observers made judgments of the relative lengths of extents that were frontal with those that were in depth. The physical aspect ratio that was perceived as 1:1 was determined for each slant. The observed anisotropies can be modeled by assuming overestimation in perceived slant. Three one-parameter slant perception models (angular expansion, affine depth compression caused by mis-scaling of binocular disparity, and intrinsic bias) were compared. The angular expansion and the affine depth compression models provided significantly better fits to the aspect ratio data than the intrinsic bias model did. The affine model required depth compression at the 2 m distance; however, that was much more than the depth compression measured directly in the third study using the same apparatus. The present results suggest that depth compression based on mis-scaling of binocular disparity may contribute to slant overestimation, especially as viewing distance increases, but also suggest that a functional rather than mechanistic account may be more appropriate for explaining biases in perceived slant in near space.
Url:
DOI: 10.1167/13.12.3
PubMed: 24097046
PubMed Central: 3791958
Links toward previous steps (curation, corpus...)
- to stream Pmc, to step Corpus: Pour aller vers cette notice dans l'étape Curation :001488
- to stream Pmc, to step Curation: Pour aller vers cette notice dans l'étape Curation :001488
- to stream Pmc, to step Checkpoint: Pour aller vers cette notice dans l'étape Curation :001328
- to stream Ncbi, to step Merge: Pour aller vers cette notice dans l'étape Curation :002991
Links to Exploration step
PMC:3791958Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Depth compression based on mis-scaling of binocular disparity may contribute to angular expansion in perceived optical slant</title>
<author><name sortKey="Li, Zhi" sort="Li, Zhi" uniqKey="Li Z" first="Zhi" last="Li">Zhi Li</name>
<affiliation wicri:level="2"><nlm:aff id="aff1">Psychology Department, Swarthmore College, Swarthmore, PA, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Psychology Department, Swarthmore College, Swarthmore, PA</wicri:regionArea>
<placeName><region type="state">Pennsylvanie</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Durgin, Frank H" sort="Durgin, Frank H" uniqKey="Durgin F" first="Frank H." last="Durgin">Frank H. Durgin</name>
<affiliation wicri:level="2"><nlm:aff id="aff1">Psychology Department, Swarthmore College, Swarthmore, PA, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Psychology Department, Swarthmore College, Swarthmore, PA</wicri:regionArea>
<placeName><region type="state">Pennsylvanie</region>
</placeName>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PMC</idno>
<idno type="pmid">24097046</idno>
<idno type="pmc">3791958</idno>
<idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3791958</idno>
<idno type="RBID">PMC:3791958</idno>
<idno type="doi">10.1167/13.12.3</idno>
<date when="2013">2013</date>
<idno type="wicri:Area/Pmc/Corpus">001488</idno>
<idno type="wicri:Area/Pmc/Curation">001488</idno>
<idno type="wicri:Area/Pmc/Checkpoint">001328</idno>
<idno type="wicri:Area/Ncbi/Merge">002991</idno>
<idno type="wicri:Area/Ncbi/Curation">002991</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Depth compression based on mis-scaling of binocular disparity may contribute to angular expansion in perceived optical slant</title>
<author><name sortKey="Li, Zhi" sort="Li, Zhi" uniqKey="Li Z" first="Zhi" last="Li">Zhi Li</name>
<affiliation wicri:level="2"><nlm:aff id="aff1">Psychology Department, Swarthmore College, Swarthmore, PA, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Psychology Department, Swarthmore College, Swarthmore, PA</wicri:regionArea>
<placeName><region type="state">Pennsylvanie</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Durgin, Frank H" sort="Durgin, Frank H" uniqKey="Durgin F" first="Frank H." last="Durgin">Frank H. Durgin</name>
<affiliation wicri:level="2"><nlm:aff id="aff1">Psychology Department, Swarthmore College, Swarthmore, PA, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Psychology Department, Swarthmore College, Swarthmore, PA</wicri:regionArea>
<placeName><region type="state">Pennsylvanie</region>
</placeName>
</affiliation>
</author>
</analytic>
<series><title level="j">Journal of Vision</title>
<idno type="eISSN">1534-7362</idno>
<imprint><date when="2013">2013</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass></textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en"><p>Three studies, involving a total of 145 observers examined quantitative theories of the overestimation of perceived optical slant. The first two studies investigated the depth/width anisotropies on positive and negative slant in both pitch and yaw at 2 and 8 m using calibrated immersive virtual environments. Observers made judgments of the relative lengths of extents that were frontal with those that were in depth. The physical aspect ratio that was perceived as 1:1 was determined for each slant. The observed anisotropies can be modeled by assuming overestimation in perceived slant. Three one-parameter slant perception models (angular expansion, affine depth compression caused by mis-scaling of binocular disparity, and intrinsic bias) were compared. The angular expansion and the affine depth compression models provided significantly better fits to the aspect ratio data than the intrinsic bias model did. The affine model required depth compression at the 2 m distance; however, that was much more than the depth compression measured directly in the third study using the same apparatus. The present results suggest that depth compression based on mis-scaling of binocular disparity may contribute to slant overestimation, especially as viewing distance increases, but also suggest that a functional rather than mechanistic account may be more appropriate for explaining biases in perceived slant in near space.</p>
</div>
</front>
</TEI>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Ticri/CIDE/explor/HapticV1/Data/Ncbi/Curation
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 002991 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Ncbi/Curation/biblio.hfd -nk 002991 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Ticri/CIDE |area= HapticV1 |flux= Ncbi |étape= Curation |type= RBID |clé= PMC:3791958 |texte= Depth compression based on mis-scaling of binocular disparity may contribute to angular expansion in perceived optical slant }}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Ncbi/Curation/RBID.i -Sk "pubmed:24097046" \ | HfdSelect -Kh $EXPLOR_AREA/Data/Ncbi/Curation/biblio.hfd \ | NlmPubMed2Wicri -a HapticV1
![]() | This area was generated with Dilib version V0.6.23. | ![]() |