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Perceived slant of binocularly-viewed large-scale surfaces: A common model from explicit and implicit measures

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Perceived slant of binocularly-viewed large-scale surfaces: A common model from explicit and implicit measures

Source :

Journal of vision [ 1534-7362 ] ; 2010.

RBID : PMC:3156410

Abstract

It is known that the perceived slants of large distal surfaces, such as hills, are exaggerated and that the exaggeration increases with distance. In a series of two experiments, we parametrically investigated the effect of viewing distance and slant on perceived slant using a high-fidelity virtual environment. An explicit numerical estimation method and an implicit aspect ratio approach were separately used to assess the perceived optical slant of simulated large-scale surfaces with different slants and viewing distances while gaze direction was fixed. The results showed that perceived optical slant increased logarithmically with viewing distance and the increase was proportionally greater for shallow slants. At each viewing distance, perceived optical slant could be approximately fit by linear functions of actual slant that were parallel across distances. These linear functions demonstrated a fairly constant gain of about 1.5 and an intercept that increased logarithmically with distance. A comprehensive three-parameter model based on the present data provides a good fit to a number of previous empirical observations measured in real environments.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3156410

PubMed: 21188784
PubMed Central: 3156410

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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Perceived slant of binocularly-viewed large-scale surfaces: A common model from explicit and implicit measures</title>
<author><name sortKey="Li, Zhi" sort="Li, Zhi" uniqKey="Li Z" first="Zhi" last="Li">Zhi Li</name>
</author>
<author><name sortKey="Durgin, Frank H" sort="Durgin, Frank H" uniqKey="Durgin F" first="Frank H." last="Durgin">Frank H. Durgin</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Perceived slant of binocularly-viewed large-scale surfaces: A common model from explicit and implicit measures</title>
<author><name sortKey="Li, Zhi" sort="Li, Zhi" uniqKey="Li Z" first="Zhi" last="Li">Zhi Li</name>
</author>
<author><name sortKey="Durgin, Frank H" sort="Durgin, Frank H" uniqKey="Durgin F" first="Frank H." last="Durgin">Frank H. Durgin</name>
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<series><title level="j">Journal of vision</title>
<idno type="eISSN">1534-7362</idno>
<imprint><date when="2010">2010</date>
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<front><div type="abstract" xml:lang="en"><p id="P1">It is known that the perceived slants of large distal surfaces, such as hills, are exaggerated and that the exaggeration increases with distance. In a series of two experiments, we parametrically investigated the effect of viewing distance and slant on perceived slant using a high-fidelity virtual environment. An explicit numerical estimation method and an implicit aspect ratio approach were separately used to assess the perceived optical slant of simulated large-scale surfaces with different slants and viewing distances while gaze direction was fixed. The results showed that perceived optical slant increased logarithmically with viewing distance and the increase was proportionally greater for shallow slants. At each viewing distance, perceived optical slant could be approximately fit by linear functions of actual slant that were parallel across distances. These linear functions demonstrated a fairly constant gain of about 1.5 and an intercept that increased logarithmically with distance. A comprehensive three-parameter model based on the present data provides a good fit to a number of previous empirical observations measured in real environments.</p>
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<pmc article-type="research-article" xml:lang="en"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
  <pmc-dir>properties manuscript</pmc-dir>
  <front><journal-meta><journal-id journal-id-type="nlm-journal-id">101147197</journal-id>
<journal-id journal-id-type="pubmed-jr-id">30247</journal-id>
<journal-id journal-id-type="nlm-ta">J Vis</journal-id>
<journal-title-group><journal-title>Journal of vision</journal-title>
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<article-id pub-id-type="manuscript">NIHMS316254</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Article</subject>
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<title-group><article-title>Perceived slant of binocularly-viewed large-scale surfaces: A common model from explicit and implicit measures</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Li</surname>
<given-names>Zhi</given-names>
</name>
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<contrib contrib-type="author"><name><surname>Durgin</surname>
<given-names>Frank H.</given-names>
</name>
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<aff id="A1">Department of Psychology, Swarthmore College</aff>
</contrib-group>
<author-notes><corresp id="cor1">Corresponding author: Frank H. Durgin., <email>fdurgin1@swarthmore.edu</email>
., Address: 500 College Ave, Swarthmore PA 19015</corresp>
</author-notes>
<pub-date pub-type="nihms-submitted"><day>4</day>
<month>8</month>
<year>2011</year>
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<pub-date pub-type="ppub"><year>2010</year>
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<pub-date pub-type="pmc-release"><day>16</day>
<month>8</month>
<year>2011</year>
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<volume>10</volume>
<issue>14</issue>
<fpage>13</fpage>
<lpage>13</lpage>
<abstract><p id="P1">It is known that the perceived slants of large distal surfaces, such as hills, are exaggerated and that the exaggeration increases with distance. In a series of two experiments, we parametrically investigated the effect of viewing distance and slant on perceived slant using a high-fidelity virtual environment. An explicit numerical estimation method and an implicit aspect ratio approach were separately used to assess the perceived optical slant of simulated large-scale surfaces with different slants and viewing distances while gaze direction was fixed. The results showed that perceived optical slant increased logarithmically with viewing distance and the increase was proportionally greater for shallow slants. At each viewing distance, perceived optical slant could be approximately fit by linear functions of actual slant that were parallel across distances. These linear functions demonstrated a fairly constant gain of about 1.5 and an intercept that increased logarithmically with distance. A comprehensive three-parameter model based on the present data provides a good fit to a number of previous empirical observations measured in real environments.</p>
</abstract>
<kwd-group><kwd>slant perception</kwd>
<kwd>exocentric distance perception</kwd>
<kwd>perceptual scale expansion</kwd>
<kwd>binocular disparity</kwd>
<kwd>virtual reality</kwd>
</kwd-group>
<funding-group><award-group><funding-source country="United States">National Eye Institute  : NEI</funding-source>
<award-id>R15 EY021026-01 || EY</award-id>
</award-group>
</funding-group>
</article-meta>
</front>
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Perceived slant of binocularly-viewed large-scale surfaces: A common model from explicit and implicit measures

Perceived slant of binocularly-viewed large-scale surfaces: A common model from explicit and implicit measures

Source :

Abstract

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