Color vision in the comb frequency domain

In 1982, Horace Barlow considered the question of human trichromacy in the context of information theory: according to the Sampling Theorem, three types of receptors covering the visible spectrum (400- -700 nm) might be sufficient to reconstruct the color signal. Although Barlow was led to reject th...

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Autores principales:	BONNARDEL,VALÈRIE, VARELA,FRANCISCO J.
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2003
Materias:	Color vision color dimensionality, comb-filtered spectra color constancy Fourier analysis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602003000100011
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spelling	oai:scielo:S0716-976020030001000112003-08-18Color vision in the comb frequency domainBONNARDEL,VALÈRIEVARELA,FRANCISCO J. Color vision color dimensionality, comb-filtered spectra color constancy Fourier analysis In 1982, Horace Barlow considered the question of human trichromacy in the context of information theory: according to the Sampling Theorem, three types of receptors covering the visible spectrum (400- -700 nm) might be sufficient to reconstruct the color signal. Although Barlow was led to reject the direct application of the Sampling Theorem to explain color dimensionality, the theoretical framework offers a fresh point of view for analyzing the color system in conjunction with the physical characteristics of natural color signals. This review aims to illustrate that if the strict mathematical reconstruction (as implied by the Sampling Theorem) is replaced by a pragmatic approximation of color signals, then trichromacy, with its subsequent opponent-color process, could be regarded as an optimization of color constancy abilities in the spectral environment of primates. Higher dimension systems (tetrachromacy) found in other species can also serve the purpose of color constancy optimization in environments where color signals exhibit a finer spectral structure.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.36 n.1 20032003-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602003000100011en10.4067/S0716-97602003000100011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Color vision color dimensionality, comb-filtered spectra color constancy Fourier analysis
spellingShingle	Color vision color dimensionality, comb-filtered spectra color constancy Fourier analysis BONNARDEL,VALÈRIE VARELA,FRANCISCO J. Color vision in the comb frequency domain
description	In 1982, Horace Barlow considered the question of human trichromacy in the context of information theory: according to the Sampling Theorem, three types of receptors covering the visible spectrum (400- -700 nm) might be sufficient to reconstruct the color signal. Although Barlow was led to reject the direct application of the Sampling Theorem to explain color dimensionality, the theoretical framework offers a fresh point of view for analyzing the color system in conjunction with the physical characteristics of natural color signals. This review aims to illustrate that if the strict mathematical reconstruction (as implied by the Sampling Theorem) is replaced by a pragmatic approximation of color signals, then trichromacy, with its subsequent opponent-color process, could be regarded as an optimization of color constancy abilities in the spectral environment of primates. Higher dimension systems (tetrachromacy) found in other species can also serve the purpose of color constancy optimization in environments where color signals exhibit a finer spectral structure.
author	BONNARDEL,VALÈRIE VARELA,FRANCISCO J.
author_facet	BONNARDEL,VALÈRIE VARELA,FRANCISCO J.
author_sort	BONNARDEL,VALÈRIE
title	Color vision in the comb frequency domain
title_short	Color vision in the comb frequency domain
title_full	Color vision in the comb frequency domain
title_fullStr	Color vision in the comb frequency domain
title_full_unstemmed	Color vision in the comb frequency domain
title_sort	color vision in the comb frequency domain
publisher	Sociedad de Biología de Chile
publishDate	2003
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602003000100011
work_keys_str_mv	AT bonnardelvalerie colorvisioninthecombfrequencydomain AT varelafranciscoj colorvisioninthecombfrequencydomain
_version_	1718441350430457856

Color vision in the comb frequency domain

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