| Simulating the detection of first-order optical flow components. | |
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MedLine Citation:
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PMID: 8977020 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Thresholds for the detection of rotation and divergence in the presence of a translational component in sparse random dot patterns are determined for human observers and two computer algorithms. The algorithms only make use of local velocity directions and not of local velocity magnitude (speed). The results show that psychophysical performance in this task can be well described without the need of specialized mechanisms tuned to either rotation or divergence. Possibly, integration of information over more than two frames occurs for low velocities. For high velocities the correspondence problem seems to limit performance. |
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Authors:
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A M Kappers; S F te Pas; J J Koenderink; A J van Doorn |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Vision research Volume: 36 ISSN: 0042-6989 ISO Abbreviation: Vision Res. Publication Date: 1996 Nov |
Date Detail:
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Created Date: 1997-01-21 Completed Date: 1997-01-21 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 3539-47 Citation Subset: IM |
Affiliation:
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Helmholtz Instituut, Utrecht, The Netherlands. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Algorithms Humans Pattern Recognition, Visual / physiology* Psychophysics Rotation Sensory Thresholds / physiology Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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