Essay Concerning Color Constancy

Jameson, Dorothea; Hurvich, Leo M.

doi:10.1146/annurev.ps.40.020189.000245

Cited by 256 publications

(53 citation statements)

References 38 publications

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“…This result indicates reliable perceptual contrast (cf. Abramov & Gordon, 1994;Jameson & Hurvich, 1989). Most important, the interaction, F(1, 15) ϭ 15.48, p Ͻ .001, reveals that the direction of change of the context hue affected detection of the target hue change in the embedded condition, but not in the separated condition.…”

Section: Resultsmentioning

confidence: 94%

“…We have argued that this dissimilarity-based contrast effect occurs at a decision-making stage and results from the influence of the context stimulus on categorization of the target stimulus (Stewart & Brown, 2004). However, the observed contrast effect could instead involve more low-level perceptual mechanisms, reflecting the well-established color contrast effect (e.g., for review, see Abramov & Gordon, 1994;Jameson & Hurvich, 1989). Thus, the purpose of Experiment 4 was to test whether the effect obtained in the preceding experiments may have been attributable to a lowlevel perceptual contrast.…”

Section: Methodsmentioning

confidence: 99%

“…In this task, perceptual contrast would be manifest as a more accurate detection of a change in target hue when the context hue changed in the opposite direction, as the opposing change in the context hue would make the target hue change more apparent (see Abramov & Gordon, 1994;Jameson & Hurvich, 1989). Thus, if the results of the preceding experiments were attributable to perceptual contrast, then hue change direction should affect accuracy in both the embedded and the separated presentation conditions (i.e., a main effect).…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Comparison and Contrast in Perceptual Categorization.

Hampton

Estes

Simmons

2005

Journal of Experimental Psychology: Learning, Memory, and Cogni

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People categorized pairs of perceptual stimuli that varied in both category membership and pairwise similarity. Experiments 1 and 2 showed categorization of 1 color of a pair to be reliably contrasted from that of the other. This similarity-based contrast effect occurred only when the context stimulus was relevant for the categorization of the target (Experiment 3). The effect was not simply owing to perceptual color contrast (Experiment 4), and it extended to pictures from common semantic categories (Experiment 5). Results were consistent with a sign-and-magnitude version of N. Stewart and G. D. A. Brown's (2005) similarity-dissimilarity generalized context model, in which categorization is affected by both similarity to and difference from target categories. The data are also modeled with criterion setting theory (M. Treisman & T. C. Williams, 1984), in which the decision criterion is systematically shifted toward the mean of the current stimuli.

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Section: Resultsmentioning

confidence: 94%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Comparison and Contrast in Perceptual Categorization.

Hampton

Estes

Simmons

2005

Journal of Experimental Psychology: Learning, Memory, and Cogni

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“…From that point of view, it may be irrelevant whether the colour appearance of an object does or does not change under a change in illuminant, providing that any changes that do occur can be correctly attributed. Indeed, Jameson and Hurvich (1989) have argued that eliminating the effects of differing illuminants could actually be disadvantageous: the changing colours of a scene could be useful cues to (for example) the weather and the time of day. Some compensation for the colour of the illuminant would be useful, but complete invariance of surface colour may be not only unnecessary, but also possibly undesirable.…”

Section: Discussionmentioning

confidence: 99%

An operational approach to colour constancy

1992

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Colour constancy is traditionally defined as the invariance of perceived surface colours under changes in the spectral composition of the illuminant. Existing quantitative studies show that, by this definition, human subjects show poor colour constancy. A different and complementary aspect of colour constancy is considered which is concerned with the ability of a subject to attribute correctly changes in the colour appearance of a scene either to changes in reflecting properties of the surfaces that make up the scene, or to changes in the spectral composition of the illuminant. Data are presented showing that, if the changes in the appearance of a scene were sufficiently great, subjects were capable of making the required discriminations highly reliably, and without scrutiny.

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“…Models from this paradigm, in general, describe a fast multiplicative process and both a slow and a fast subtractive process, followed by a static and compressive nonlinearity (e.g., Adelson, 1982;Hayhoe et al, 1987). Also, evidence for both multiplicative and subtractive processes in color appearance have been proposed by studies measuring the effect of the background on a target (induction; Jameson & Hurvich, 1989;Shevell, 1978;Walraven, 1976).…”

Section: Discussionmentioning

confidence: 99%

Effects of luminance oscillations on simulated lightness discriminations

Shimozaki

Thomas

Eckstein

2001

Perception & Psychophysics

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The speed of processes underlying lightness constancy was studied by having observers discriminate small differences in simulated lightness under an oscillating illumination. The period of oscillation varied from 0.25 to 120 sec. The target was a 1º square which appeared for 150 msec at random intervals either directly against a uniform background or separated from the background by a 1º dark gap. When the target and background were adjacent to each other, discrimination accuracy approached control levels (fixed illumination) at all but the shortest periods of oscillation. When the gap was introduced, accuracy increased as the period of oscillation increased, but never approached control levels. The results suggest that a fast local contrast mechanism is the primary mediator of lightness constancy for this task, but that there is also a slower mechanism that may be related to adaptation.

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Essay Concerning Color Constancy

Cited by 256 publications

References 38 publications

Comparison and Contrast in Perceptual Categorization.

Comparison and Contrast in Perceptual Categorization.

An operational approach to colour constancy

Effects of luminance oscillations on simulated lightness discriminations

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