| A model for simultaneous computation of heading and depth in the presence of rotations. | |
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MedLine Citation:
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PMID: 17935750 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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When an observer moves through the world, the motions of images on the retina provide information about the direction of observer motion, or "heading", and about the relative distance to surfaces in the scene. While it is simple to compute these quantities when the observer moves in a straight line, the computation becomes substantially more difficult when the observer also undergoes a rotation. Here, we examine a model that uses operators with spatially extended, direction-tuned, center-surround receptive fields to compute heading in the presence of rotations. We show that this model can simultaneously locate edges between surfaces and provide an estimate of the change in relative depth between those surfaces. We further show that the incorporation of speed tuning in this model does not appreciably affect the results. |
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Authors:
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Constance S Royden; Laura J Picone |
Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Vision research Volume: 47 ISSN: 0042-6989 ISO Abbreviation: Vision Res. Publication Date: 2007 Nov |
Date Detail:
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Created Date: 2007-10-29 Completed Date: 2008-02-25 Revised Date: - |
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: 3025-40 Citation Subset: IM |
Affiliation:
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Department of Mathematics and Computer Science, P.O. Box 116A, College of the Holy Cross, Worcester, MA 01610, USA. croyden@mathcs.holycross.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Depth Perception* Humans Models, Psychological* Motion Perception* Pattern Recognition, Visual Rotation |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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