Document Detail


Perception of surface contours and surface shape: from computation to psychophysics.
MedLine Citation:
PMID:  1527648     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Contours projected from surface markings provide information for the perception of surface shape. The nature of this information depends on how the shapes of surface marking are constrained relative to the shapes of the surfaces upon which they lie. A natural constraint is that of figural regularity relative to the shape of an underlying surface. Such a constraint would be expressed in terms of the geodesic curvature of a marking, with markings having zero geodesic curvature (geodesics of a surface) being the prototypic regular figures. I propose a number of forms for a geodesic constraint and present psychophysical evidence from a contour-labeling experiment that the human visual system implicitly incorporates a geodesic constraint in the processing of reflectance contours.
Authors:
D C Knill
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics and image science     Volume:  9     ISSN:  0740-3232     ISO Abbreviation:  J Opt Soc Am A     Publication Date:  1992 Sep 
Date Detail:
Created Date:  1992-10-16     Completed Date:  1992-10-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8402086     Medline TA:  J Opt Soc Am A     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1449-64     Citation Subset:  IM    
Affiliation:
Department of Psychology, University of Minnesota, Minneapolis 55455.
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MeSH Terms
Descriptor/Qualifier:
Computer Simulation
Form Perception / physiology*
Humans
Mathematics
Psychophysics

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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