Visualizing 3D objects from 2D cross sectional images displayed in-situ versus ex-situ
Identifieur interne : 001C79 ( Pmc/Checkpoint ); précédent : 001C78; suivant : 001C80Visualizing 3D objects from 2D cross sectional images displayed in-situ versus ex-situ
Auteurs : Bing Wu ; Roberta L. Klatzky ; George StettenSource :
- Journal of experimental psychology. Applied [ 1076-898X ] ; 2010.
Abstract
The present research investigates how mental visualization of a 3D object from 2D cross sectional images is influenced by displacing the images from the source object, as is customary in medical imaging. Three experiments were conducted to assess people’s ability to integrate spatial information over a series of cross sectional images, in order to visualize an object posed in 3D space. Participants used a hand-held tool to reveal a virtual rod as a sequence of cross-sectional images, which were displayed either directly in the space of exploration (
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DOI: 10.1037/a0018373
PubMed: 20350043
PubMed Central: 2862280
Affiliations:
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versus <italic>ex-situ</italic>
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<author><name sortKey="Wu, Bing" sort="Wu, Bing" uniqKey="Wu B" first="Bing" last="Wu">Bing Wu</name>
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<author><name sortKey="Klatzky, Roberta L" sort="Klatzky, Roberta L" uniqKey="Klatzky R" first="Roberta L." last="Klatzky">Roberta L. Klatzky</name>
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<author><name sortKey="Klatzky, Roberta L" sort="Klatzky, Roberta L" uniqKey="Klatzky R" first="Roberta L." last="Klatzky">Roberta L. Klatzky</name>
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<front><div type="abstract" xml:lang="en"><p id="P1">The present research investigates how mental visualization of a 3D object from 2D cross sectional images is influenced by displacing the images from the source object, as is customary in medical imaging. Three experiments were conducted to assess people’s ability to integrate spatial information over a series of cross sectional images, in order to visualize an object posed in 3D space. Participants used a hand-held tool to reveal a virtual rod as a sequence of cross-sectional images, which were displayed either directly in the space of exploration (<italic>in-situ</italic>
) or displaced to a remote screen (<italic>ex-situ</italic>
). They manipulated a response stylus to match the virtual rod’s pitch (vertical slant), yaw (horizontal slant), or both. Consistent with the hypothesis that spatial co-location of image and source object facilitates mental visualization, we found that although single dimensions of slant were judged accurately with both displays, judging pitch and yaw simultaneously produced differences in systematic error between <italic>in-situ</italic>
and <italic>ex-situ</italic>
displays. <italic>Ex-situ</italic>
imaging also exhibited errors such that the magnitude of the response was approximately correct but the direction was reversed. Regression analysis indicated that the <italic>in-situ</italic>
judgments were primarily based on spatio-temporal visualization, while the <italic>ex-situ</italic>
judgments relied on an ad hoc, screen-based heuristic. These findings suggest that <italic>in-situ</italic>
displays may be useful in clinical practice by reducing error and facilitating the ability of radiologists to visualize 3D anatomy from cross sectional images.</p>
</div>
</front>
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<journal-id journal-id-type="nlm-ta">J Exp Psychol Appl</journal-id>
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<article-categories><subj-group subj-group-type="heading"><subject>Article</subject>
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<title-group><article-title>Visualizing 3D objects from 2D cross sectional images displayed <italic>in-situ</italic>
versus <italic>ex-situ</italic>
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<contrib-group><contrib contrib-type="author"><name><surname>Wu</surname>
<given-names>Bing</given-names>
</name>
<aff id="A1">Department of Psychology and Robotics Institute, Carnegie Mellon University, Pittsburgh</aff>
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<contrib contrib-type="author"><name><surname>Klatzky</surname>
<given-names>Roberta L.</given-names>
</name>
<aff id="A2">Department of Psychology and Human-Computer Interaction Institute, Carnegie Mellon University, Pittsburgh</aff>
</contrib>
<contrib contrib-type="author"><name><surname>Stetten</surname>
<given-names>George</given-names>
</name>
<aff id="A3">Robotics Institute, Carnegie Mellon University, Pittsburgh and Department of Biomedical Engineering, University of Pittsburgh, Pittsburgh</aff>
</contrib>
</contrib-group>
<author-notes><corresp id="cor1">Correspondence concerning this article should be addressed to Bing Wu, Department of Psychology, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, PA 15213, USA. <email>bingwu@andrew.cmu.edu</email>
</corresp>
</author-notes>
<pub-date pub-type="nihms-submitted"><day>24</day>
<month>3</month>
<year>2010</year>
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<pub-date pub-type="ppub"><month>3</month>
<year>2010</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>1</day>
<month>3</month>
<year>2011</year>
</pub-date>
<volume>16</volume>
<issue>1</issue>
<fpage>45</fpage>
<lpage>59</lpage>
<abstract><p id="P1">The present research investigates how mental visualization of a 3D object from 2D cross sectional images is influenced by displacing the images from the source object, as is customary in medical imaging. Three experiments were conducted to assess people’s ability to integrate spatial information over a series of cross sectional images, in order to visualize an object posed in 3D space. Participants used a hand-held tool to reveal a virtual rod as a sequence of cross-sectional images, which were displayed either directly in the space of exploration (<italic>in-situ</italic>
) or displaced to a remote screen (<italic>ex-situ</italic>
). They manipulated a response stylus to match the virtual rod’s pitch (vertical slant), yaw (horizontal slant), or both. Consistent with the hypothesis that spatial co-location of image and source object facilitates mental visualization, we found that although single dimensions of slant were judged accurately with both displays, judging pitch and yaw simultaneously produced differences in systematic error between <italic>in-situ</italic>
and <italic>ex-situ</italic>
displays. <italic>Ex-situ</italic>
imaging also exhibited errors such that the magnitude of the response was approximately correct but the direction was reversed. Regression analysis indicated that the <italic>in-situ</italic>
judgments were primarily based on spatio-temporal visualization, while the <italic>ex-situ</italic>
judgments relied on an ad hoc, screen-based heuristic. These findings suggest that <italic>in-situ</italic>
displays may be useful in clinical practice by reducing error and facilitating the ability of radiologists to visualize 3D anatomy from cross sectional images.</p>
</abstract>
<kwd-group><kwd>visualization</kwd>
<kwd>integration</kwd>
<kwd>spatio-temporal</kwd>
<kwd>anorthoscopic</kwd>
<kwd>cross sections</kwd>
</kwd-group>
<contract-num rid="EB1">R01 EB000860-01
||EB</contract-num>
<contract-sponsor id="EB1">National Institute of Biomedical Imaging and Bioengineering : NIBIB</contract-sponsor>
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<name sortKey="Wu, Bing" sort="Wu, Bing" uniqKey="Wu B" first="Bing" last="Wu">Bing Wu</name>
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