Document Detail

The three dimensions of human visual sensitivity to first-order contrast statistics.
MedLine Citation:
PMID:  17619044     Owner:  NLM     Status:  MEDLINE    
This work studies the preattentive discrimination of achromatic textures composed of mixtures of different (Weber) contrasts. These textures differ not at all in local spatial structure, but only in the relative proportions of different contrasts they comprise. It is shown that, like chromatic discrimination, preattentive discrimination of such textures is three-dimensional. The current results do not uniquely determine the characteristics of the three texture filters mediating human discrimination of these textures; they do, however, define the space of textures with 4th-order polynomial histograms to which human vision is sensitive. Three real-valued functions of contrast that collectively capture human sensitivity to the textures in this space are presented.
Charles Chubb; Jong-Ho Nam; Daniel R Bindman; George Sperling
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Publication Detail:
Type:  Journal Article     Date:  2007-07-09
Journal Detail:
Title:  Vision research     Volume:  47     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-07-31     Completed Date:  2007-10-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  2237-48     Citation Subset:  IM    
Department of Cognitive Sciences and Institute for Mathematical Behavioral Sciences, University of California at Irvine, Irvine, CA 92697-5100, USA.
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MeSH Terms
Contrast Sensitivity*
Discrimination (Psychology)*
Pattern Recognition, Visual*
Photic Stimulation / methods

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

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