Critical review of definitions of metamerism

Robertson, Alan R.

doi:10.1002/col.5080080313

Cited by 14 publications

(4 citation statements)

References 5 publications

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“…Therefore, a general index of metamerism, MI (RD) was proposed on the basis on the square-root of the sum of the squares of the residual difference, similar to the Bridgeman's index (Bridgeman and Hudson, 1969) based on refl ectance differences. Robertson (1983) stated that colour constancy and metamerism are related. Metamerism may result from the failure of the colour constancy of one of the members of a pair of matched samples.…”

Section: Residual Differencementioning

confidence: 98%

“…Some proposals (Robertson, 1983;Fairman, 1991) were made to rename the cases where colour differences exist under reference illuminant as paramerism, para-chromism, pseudo-metamerism, near-metamerism or approximate-metamerism, but none have been accepted universally. CIE (1971) advised to take suitable account of this difference -but no specifi c suggestion has been made.…”

Section: Cie Special Index Of Metamerismmentioning

confidence: 99%

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Metamerism and shade sorting

Choudhury

2015

Principles of Colour and Appearance Measurement

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Section: Residual Differencementioning

confidence: 98%

Section: Cie Special Index Of Metamerismmentioning

confidence: 99%

Metamerism and shade sorting

Choudhury

2015

Principles of Colour and Appearance Measurement

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“…An illuminant metameric pair is a pair of objects illuminated by a given reference illuminant, which reflects stimuli of different spectral power distributions and produces the same colour under the same viewing conditions, but will produce different colour sensations under the test illuminants [1]. From an industrial point of view, an exact match can never be achieved in practice, thus an approximate metameric match can be acceptable to the colour industry [2].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the reliability of metameric indices using visual assessment

Chow

Chan

Chong

et al. 1999

Coloration Technology

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Fifty‐five metameric sample pairs were prepared using computer‐predicted recipes from six different colour centres using cotton knit fabric. The colour difference of each sample pair was measured spectrophotometrically and was assessed visually by a panel of observers against a grey scale under three illuminants: reference illuminant D65, test illuminant A and TL84. In general, there was a positive agreement between observers' assessments although there was some variation due to the spread of ages. The results of illuminant‐specific special indices, CMC(2:1), were better than others, which included CIELAB, CMC(1:1), CIE94(1:1:1) and CIE94(2:1:1). In general, the performance of these five special indices was acceptable. The results of illuminant‐independent general indices failed to show any significant correlation. The effect of residual colour difference under the reference illuminant affected the performance of the special indices to a certain degree, but this was not true of general indices.

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“…An illuminant metameric pair is a pair of objects illuminated by a given reference illuminant, which reflects stimuli of different spectral power distributions and produces the same colour under the same viewing conditions, but will produce different colour sensations under the test illuminants [1]. The colour difference of a sample pair under the test illuminants is formed from three different components i.e.…”

Section: Introductionmentioning

confidence: 99%

Colour Difference Of Illuminant Metamerism

Chow

Chan²,

Chong³

1998

Research Journal of Textile and Apparel

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Fifty-five metameric sample pairs were prepared using computer-predicted recipes from six different colour centres using cotton knit fabric. The colour difference of each sample pairs was measured using a datacolour Elrepho 2000 under the reference illuminant D6s, and test illuminant A and TL84. The colour difference of a sample pair under a specific illuminant is formed from three different components i.e. lightness, chroma and a* b* difference. Metameric colour difference should be attributed to the CIELAB a* b* difference and to a less extend of chroma difference but not to the lightness L* difference under the test illuminants.

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Critical review of definitions of metamerism

Cited by 14 publications

References 5 publications

Metamerism and shade sorting

Metamerism and shade sorting

Evaluation of the reliability of metameric indices using visual assessment

Colour Difference Of Illuminant Metamerism

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