OPPONENT CHROMATIC MECHANISMS

RELATION TO PHOTOPIGMENTS AND HUE NAMING.

John S Werner, B. R. Wooten

Research output: Contribution to journalArticle

123 Citations (Scopus)

Abstract

Opponent chromatic response functions were determined for monochromatic, equal-luminance stimuli from 400 to 700 nm for three observers using a hue cancellation procedure. The same observers scaled the hue of the stimuli using the terms red, green, yellow, and blue. The results showed that the hue scaling was accurately predicted from the cancellation functions using the model of Hurvich and Jameson. Theoretical curves were generated to fit the chromatic response functions with a linear combination of three cone photopigments. The theoretical photopigments were based on an iodopsin nomogram with lambda //m//a//x at alpha equals 435, beta equals 530, and gamma equals 562 nm. An estimate of the density of each observer's preretinal optic media was obtained in order to relate the photopigment absorption spectra to the psychophysical data. Good linear fits were obtained for each observer's red-green curve, but not for the yellow-blue curves. A nonlinear model with an expansive exponent was used to fit the yellow-blue response functions with the three theoretical photopigments.

Original languageEnglish (US)
Pages (from-to)422-434
Number of pages13
JournalJ Opt Soc Am
Volume69
Issue number3
StatePublished - Mar 1979
Externally publishedYes

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Color
Nomograms
Nonlinear Dynamics
Cones
Absorption spectra
Luminance
Optics
iodopsin

ASJC Scopus subject areas

  • Engineering(all)
  • Medicine(all)

Cite this

OPPONENT CHROMATIC MECHANISMS : RELATION TO PHOTOPIGMENTS AND HUE NAMING. / Werner, John S; Wooten, B. R.

In: J Opt Soc Am, Vol. 69, No. 3, 03.1979, p. 422-434.

Research output: Contribution to journalArticle

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