“Colour constancy” in Mondrian patterns: A partial cancellation of physical chromaticity shifts by simultaneous contrast

Valberg, Arne; Lange-Malecki, Bettina

doi:10.1016/0042-6989(90)90079-z

Cited by 121 publications

(71 citation statements)

References 17 publications

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“…All three subjects showed very weak colour constancy if they were instructed to match the colours of lights rather than papers. Similar results have been reported by other investigators using similar techniques (Tiplitz Blackwell & Buchsbaum, 1988;Valberg & Lange-Malecki, 1990). These results are evidence against the notion of colour constancy as an automatic, low-level, and complete compensation for changes in the composition of an illuminant.…”

Section: Vision Research Author Manuscriptsupporting

confidence: 92%

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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Section: Vision Research Author Manuscriptsupporting

confidence: 92%

An operational approach to colour constancy

1992

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“…Until now, the matching method has been used most often because very accurate results about the degree of compensation can be obtained (as expressed, for example, by the Brunswik ratio that was described in Part 1). In our view, the relatively low degree of color constancy reported in this paper (exact-matching conditions) and elsewhere (e.g., Arend & Reeves, 1986;Valberg & Lange-Malecki, 1990) implies the absence of appropriate compensatory mechanisms. However, unlike Valberg and Lange-Malecki (1990), we do not wish to conclude that color constancy is a nonexistent phenomenon.…”

Section: Constancycontrasting

confidence: 47%

Naming versus matching in color constancy

Troost

Weert

1991

Perception & Psychophysics

139

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In this paper, a replication of the color-constancy study of Arend and Reeves (1986) is reported. and an alternative method is presented that can be used for the study of higher order aspects of color constancy, such as memory, familiarity, and perceptual organization. Besides a simultaneous presentation of standard and test illuminants, we also carried out an experiment in which the illuminants were presented successively. The results were similar to Arend and Reeves's; however, in the object-matching condition of the successive experiment, we found an overestimation, instead of an underestimation, of the illuminant component. Because the results of matching experiments are difficult to interpret, mainly due to their sensitivity to instruction effects, we introduced another type of color-constancy task. In this task, subjects simply named the color of a simulated patch. It was found that, by applying such a task, a reliable measure of the degree of identification of object color can be obtained.Color constancy is the phenomenon that the color appearance of objects is invariant, notwithstanding variations in illumination. In real-life situations, variations in illumination occur very often. For example, the spectral composition of daylight changes with the weather, the season, and the time of the day. The artificial lights in our environment have many different spectral characteristics as well. In all these cases, the visual system tends to perceive objects with constant colors.Color constancy poses a problem, because the object component and the illuminant component of the light that reaches the eye are not separately available to the observer. In recent attempts to model color constancy (e.g.,

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“…In addition, natural images tend to contain luminance information at several spatial scales that is not conveyed in simplified surrounds such as those investigated here. These differences may account for the results reported by Valberg and Lange-Malecki (1990), whose reported equivalent backgrounds were consistent with spatial averaging. However, they used a chromatic Mondrian containing several patches ofdifferent colors.…”

Section: Surround Complexitymentioning

confidence: 67%

“…More direct evidence for spatial averaging was recently provided by an observation reported by Valberg and Lange-Malecki (1990). They placed an achromatic surface in the middle of a surround containing many other colors and then compared it with another central surface surrounded by a single adjustable gray background.…”

Section: Equivalent Backgroundsmentioning

confidence: 95%

Lightness, equivalent backgrounds, and anchoring

Bruno

Bernardis

Schirillo

1997

Perception & Psychophysics

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Observers compared two center/surround configurations haploscopically. One configuration consisted of a standard surface surrounded by two, three, or four surfaces, each with a different luminance. The other configuration consisted of a comparison surface surrounded by a single annulus that varied in luminance. Center surfaces always had the same luminance but only appeared to have the same lightness with certain annuli (equivalent backgrounds). For most displays, the luminance needed to obtain an equivalent background was close to the highest luminance in the standard surround configuration. Models based on the space-average luminance or the space-average contrast of the standard surround configuration yielded poorer fits. Implications for computational models of lightness and for candidate solutions to the anchoring problem are discussed.

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“Colour constancy” in Mondrian patterns: A partial cancellation of physical chromaticity shifts by simultaneous contrast

Cited by 121 publications

References 17 publications

An operational approach to colour constancy

An operational approach to colour constancy

Naming versus matching in color constancy

Lightness, equivalent backgrounds, and anchoring

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