Hue-Discrimination Thresholds and Hue-Coefficients

Twelve sets of directly obtained hue-discrimination thresholds, from König up to Weale, were plotted in a figure and a representative curve as a function of wavelength was determined. With this curve, 3 sets of theoretical thresholds were compared, one derived from multidimensional scaling by Shepard with Ekman's data, one from multidimensional scaling by Shepard and Carroll with Boynton and Gordon's data, the other from the opponent-colors theory by Hurvich and Jameson. Except for a few points, those indirectly obtained thresholds were in good agreement with the representative curve. The same kind of comparison was made in regard to hue-coefficients, according to the terminology of Hurvich and Jameson. Seven sets of hue-coefficient curves, each consisting of 4 curves for red, yellow, green, and blue, and also the theoretical curves of the opponent-colors theory were plotted in a figure. The 7 sets consisted of the curves derived from some of the above-mentioned experimental data and of the curves obtained in color naming experiments by Schouten. Though it was rather difficult to assess the agreement among the sets, all exhibited about the same patterns

Function (biology) · Geometry · Hue · Scaling · Statistics · Artificial Intelligence · Color perception and design · Color Science and Applications · Computer Science · Mathematics · Sensory Analysis and Statistical Methods

• The Analysis of Proximities

  Open Access•Roger N Shepard•Psychometrika•1962

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