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ISO 11664-4:2008 (CIE S 014-4/E:2007)
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Colorimetry -- Part 4: CIE 1976 L*a*b* Colour space

This standard was last reviewed* in 2012.

*ISO standards are reviewed every five years.

Abstract

ISO 11664-4:2008 specifies the method of calculating the coordinates of the CIE 1976 L*a*b* colour space including correlates of lightness, chroma and hue. It includes two methods for calculating Euclidean distances in this space to represent the perceived magnitude of colour differences.

ISO 11664-4:2008 is applicable to tristimulus values calculated using colour-matching functions of the CIE 1931 standard colorimetric system or the CIE 1964 standard colorimetric system. ISO 11664-4:2008 may be used for the specification of colour stimuli perceived as belonging to a reflecting or transmitting object, where a three-dimensional space more uniform than tristimulus space is required. It does not apply to colour stimuli perceived as belonging to an area that appears to be emitting light as a primary light source, or that appears to be specularly reflecting such light. ISO 11664-4:2008 does apply to self-luminous displays, like cathode ray tubes, if they are being used to simulate reflecting or transmitting objects and if the stimuli are appropriately normalized.

 

  • Document published on: 2008-11-01
    Edition: 1 (Monolingual) ICS: 17.180.20
    Status: Published Stage: 90.93 (2012-03-17)
    TC/SC: ISO/TC 274 Number of Pages: 8
  • No revision information available

  • No corrigenda or amendments available

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