Abstract
This study presents data on the luminance difference at which a hue difference is first perceived between two identical spectral lights. Thresholds were obtained for both luminance increments and decrements from a 2.00 log troland standard for wavelengths between 470 nm and 690 nm. A predicted luminance threshold for each wavelength was calculated based on wavelength discrimination data and the Purdy constant hue contours; i.e. that luminance at which the constant hue contour intersects the wavelength discrimination bound for a given wavelength. A generally good agreement was obtained between observed and predicted values.
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This document is Technical Report No. 41, of Contract No. 266(46), between Columbia University and the Office of Naval Research. The work is part of the program of Project No. 142-404. Reproduction in whole or in part is permitted for any purpose of the United States government.Support has also been provided by the Institutional Scientific Research Pool of Columbia University. This study was performed in the laboratory of Clarence H. Graham. We should like to thank him for his advice and for his critical reading of the manuscript.
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Smith, V.C., Pokorny, J., Cohen, J. et al. Luminance thresholds for the Bezold-Brücke hue shift. Perception & Psychophysics 3, 306–310 (1968). https://doi.org/10.3758/BF03212751
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DOI: https://doi.org/10.3758/BF03212751