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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 19, Iss. 6 — Jun. 1, 2002
  • pp: 1084–1095

Psychophysical model of chromatic perceptual transparency based on substractive color mixture

Franz Faul and Vebjørn Ekroll  »View Author Affiliations

JOSA A, Vol. 19, Issue 6, pp. 1084-1095 (2002)

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Variants of Metelli’s episcotister model, which are based on additive color mixture, have been found to describe the luminance conditions for perceptual transparency very accurately. However, the findings in the chromatic domain are not that clear-cut, since there exist chromatic stimuli that conform to the additive model but do not appear transparent. We present evidence that such failures are of a systematic nature, and we propose an alternative psychophysical model based on subtractive color mixture. Results of a computer simulation revealed that this model approximately describes color changes that occur when a surface is covered by a filter. We present the results of two psychophysical experiments with chromatic stimuli, in which we directly compared the predictions of the additive model and the predictions of the new model. These results show that the color relations leading to the perception of a homogeneous transparent layer conform very closely to the predictions of the new model and deviate systematically from the predictions of the additive model.

© 2002 Optical Society of America

OCIS Codes
(330.1690) Vision, color, and visual optics : Color
(330.1710) Vision, color, and visual optics : Color, measurement
(330.1720) Vision, color, and visual optics : Color vision
(330.7310) Vision, color, and visual optics : Vision

Original Manuscript: August 10, 2001
Revised Manuscript: December 12, 2001
Manuscript Accepted: December 12, 2001
Published: June 1, 2002

Franz Faul and Vebjørn Ekroll, "Psychophysical model of chromatic perceptual transparency based on substractive color mixture," J. Opt. Soc. Am. A 19, 1084-1095 (2002)

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