Document Detail


Color signals in natural scenes: characteristics of reflectance spectra and effects of natural illuminants.
MedLine Citation:
PMID:  10680623     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Multispectral images of natural scenes were collected from both forests and coral reefs to represent typical, complex scenes that might be viewed by modern animals. Both reflectance spectra and modeled visual color signals in these scenes were decorrelated spectrally by principal-component analysis. Nearly 98% of the variance of reflectance spectra and color signals can be described by the first three principal components for both forest and coral reef scenes, which implies that three well-designed visual channels can recover almost all of the spectral information of natural scenes. A variety of natural illuminants affects color signals of forest scenes only slightly, but the variation in ambient irradiance spectra that is due to the absorption of light by water has dramatic influences on the spectral characteristics of coral reef scenes.
Authors:
C C Chiao; T W Cronin; D Osorio
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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, image science, and vision     Volume:  17     ISSN:  1084-7529     ISO Abbreviation:  J Opt Soc Am A Opt Image Sci Vis     Publication Date:  2000 Feb 
Date Detail:
Created Date:  2000-03-02     Completed Date:  2000-03-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9800943     Medline TA:  J Opt Soc Am A Opt Image Sci Vis     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  218-24     Citation Subset:  IM    
Affiliation:
Department of Biological Sciences, University of Maryland-Baltimore County, Baltimore, Maryland 21250, USA. chiao@umbc.edu
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MeSH Terms
Descriptor/Qualifier:
Animals
Color*
Environment*
Light*
Models, Theoretical*
Scattering, Radiation

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


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