Daylight, biochrome surfaces, and human chromatic response in the Fourier domain.
J Opt Soc Am A Opt Image Sci Vis
; 17(4): 677-86, 2000 Apr.
Article
em En
| MEDLINE
| ID: mdl-10757175
ABSTRACT
We first report Fourier analyses of a collection of 348 daylight spectral power distributions and 1,695 biochrome surface reflectance functions. The power spectra of the daylights are low pass with more than 99% of spectral power below 1 cycle/300 nm and 99.9% below 3 cycles/300 nm. The power spectra of reflectance functions are also low pass with more than 99% of spectral power below 4 cycles/300 nm and 99.9% below 11 cycles/300 nm. Consequently, the resulting color signals are typically low pass with, for our samples, an estimated frequency cutoff of 5 cycles/300 nm. Theoretical and experimental data concerning human chromatic response in the frequency domain show that this limit corresponds to the highest frequency that the color system can resolve. The implications for normal and abnormal human color vision are discussed.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Luz Solar
/
Cor
/
Percepção de Cores
/
Modelos Biológicos
/
Modelos Teóricos
Limite:
Humans
Idioma:
En
Revista:
J Opt Soc Am A Opt Image Sci Vis
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Reino Unido