Scaling of saturation and hue

Indow, Tarow; Stevens, S. S.

doi:10.3758/bf03207390

Cited by 120 publications

(57 citation statements)

References 15 publications

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Stevens and Greenbaum (1966) cite a variety of experiments in which this "regression effect" has been found. Indow and Stevens (1966) have suggested that taking the geometric mean of the two slopes might be an appropriate way of averaging out the regression effect. In the present case, the geometric mean of 0.44 and 0.91 is 0.63.…”

Section: Apparatusmentioning

confidence: 99%

Validation of ratio scales of opinion by multimodality matching

Dawson

Brinker

1971

Perception & Psychophysics

View full text Add to dashboard Cite

Section: Apparatusmentioning

confidence: 99%

Validation of ratio scales of opinion by multimodality matching

Dawson

Brinker

1971

Perception & Psychophysics

View full text Add to dashboard Cite

“…Human data for the saturation of a 630-nm light obtained by the method of equisection also yield a scale of saturation that is linear with colorimetric purity (Indow, 1967). A similar finding has also been reported for other wavelengths (Indow & Stevens, 1966). In an equisection task, subjects are asked to adjust stimuli to produce equal differences in saturation.…”

Section: Comparisons With Human Datamentioning

confidence: 61%

“…For colorimetric purities near zero (a high proportion of white light to 630-nm light), the mixture will appear to be a highly desaturated red, while for colorimetric purities close to 1.0, the mixture will appear highly saturated (close to a pure red). Several studies involving humans as subjects have determined how the apparent saturation qf a light varies as a function of its colorimetric purity (e.g., Indow, 1967;Indow & Stevens, 1966;Panek & Stevens, 1966). The goal of the present study is to determine for pigeons how the apparent saturation of a red light varies as a function of its colorimetric purity.…”

mentioning

confidence: 99%

An interval scale of saturation for the pigeon

Schneider

1981

Perception & Psychophysics

View full text Add to dashboard Cite

Pigeons were required to discriminate between "identical" vs. "different" pairs of lights in a yes/no signal-detection task with Ii symmetrical payoff matrix. If the two lights projected on the two halves of the bipartite field constituting the center response key in a three-key chamber were identical in wavelength composition, then a single peck on the left key was reinforced with food. If the two lights differed in wavelength composition, then right-key pecks were reinforced. Each pigeon experienced all possible pairs (55)of 11 lights having the same dominant hue (630 urn) but differing in colorimetric purity. The percentage of correct responses was taken as a measure of the dissimilarity between the two lights constituting a pair. The rank-order information available in these dissimilarity measures was used to determine an interval scale of saturation in the pigeon. Saturation was found to be linearly related to colorimetric purity. Phenomenologically, colors are described with respect to the attributes of hue, saturation, and brightness. While hue and brightness have been the focus of many studies of color visionin pigeons (see Donovan, 1978, for a review), only two studies have attempted to measure saturation (the perceived chromatic content of a light or surface relative to an achromatic light or surface). Blough (1975) used generalization procedures in an attempt to determine the relative saturation of spectral lights. She assumed that the spectral lights most similar to white light, that is, those with the least degree-of saturation, should elicit more responses in the generalization test than the spectral lights which are more saturated and, therefore, appear to differ more from white. In two experiments, Blough found the spectral region between 550 and 600 nm to be the least saturated portion of the spectrum in the sense that there was a greater degree of generalization between a white light (color temperature = 3,050 0K) and spectral lights in this region than on either side of it. Romeskie and Yager (l976a, 1976b) inferred the relative saturation of monochromatic lights from measurements of the spectral photochromatic interval for the pigeon. The spectral photochromatic interval is the difference in intensity levels (expressed in log units) between a monochromatic light at absolute threshold and the intensity level at which it can be distinguished from an equally bright white light. Graham and Hsia (1969) have shown that for humans, wavelengths that appear strongly saturated have small photochromatic intervals, and those that appear weakly saturated have large photochromatic intervals. Hence, photochromatic interval can be used as an index of

show abstract

“…However, chroma is a subjective measure of saturation, and chroma levels for different colors represent different purity levels. Indow and Stevens (1966) found that the exponents (slopes) of the functions relating subjective to objective purity (colorimetric purity) differ according to hue. These exponents were yellow (2.9), red and green (1.7), and blue (1.4).…”

Section: Resultsmentioning

confidence: 99%

“…Pc and Pe are not linearly related, and the simple relationship found here for Pc does not hold for Pe. lt is worthwhile noting that Indow and Stevens (1966) found that their scaling data was also better fitted by Pclt would appear that the errors made in judging lightness come about solely from the distraction provided by the colorimetric purity of the color. The colorimetric purity of a sample is related to the amount of white in a mixture necessary to combine with a spectral color in order to obtain a match to that sample.…”

Section: Discussionmentioning

confidence: 99%

The psychological relationship between lightness and saturation

Davidoff

1974

Perception & Psychophysics

View full text Add to dashboard Cite

Lightness and saturation, though independent in a physical sense, have often been seen to be psychologically related. The first experiment uses a multidimensional scaling technique to again verify this nonindependence for untrained as. A further experiment, using a matching technique, quantifies this relationship, giving the extent of the error in lightness for varying levels of saturation. This relationship is found to be independent of hue if saturation is measured by the colorimetric purity of the hue. Errors in value (lightness on the Munsell system) were found to be linearly related to colorimetric purity.

show abstract

Scaling of saturation and hue

Cited by 120 publications

References 15 publications

Validation of ratio scales of opinion by multimodality matching

Validation of ratio scales of opinion by multimodality matching

An interval scale of saturation for the pigeon

The psychological relationship between lightness and saturation

Contact Info

Product

Resources

About