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object DeltaE

Formulas for computation of color differences.

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  6. def cmc(referenceLab: Lab, sampleLab: Lab, l: Double, c: Double): Double

    Compute color deference between color using Delta CMC(l:c) formula, see http://www.brucelindbloom.com/Eqn_DeltaE_CMC.html

    Compute color deference between color using Delta CMC(l:c) formula, see http://www.brucelindbloom.com/Eqn_DeltaE_CMC.html

    referenceLab

    CIE L*a*b* reference

    sampleLab

    CIE L*a*b* sample

    l

    lightness weight, typically equal 1 (for imperceptibility) or 2 (for acceptability).

    c

    chroma weight, typically equal 1.

    See also

    #cmcAcceptability

    #cmcPerceptibility

  7. def cmc(referenceLab: Array[Double], sampleLab: Array[Double], l: Double, c: Double): Double

    Compute color deference between color using Delta CMC(l:c) formula, see http://www.brucelindbloom.com/Eqn_DeltaE_CMC.html

    Compute color deference between color using Delta CMC(l:c) formula, see http://www.brucelindbloom.com/Eqn_DeltaE_CMC.html

    referenceLab

    CIE L*a*b* reference

    sampleLab

    CIE L*a*b* sample

    l

    lightness weight, typically equal 1 (for imperceptibility) or 2 (for acceptability).

    c

    chroma weight, typically equal 1.

    See also

    #cmcAcceptability

    #cmcPerceptibility

  8. def cmcAcceptability(referenceLab: Array[Double], sampleLab: Array[Double]): Double

    Compute color deference between color using Delta CMC(2:1) formula "for acceptability", see http://www.brucelindbloom.com/Eqn_DeltaE_CMC.html

    Compute color deference between color using Delta CMC(2:1) formula "for acceptability", see http://www.brucelindbloom.com/Eqn_DeltaE_CMC.html

    referenceLab

    CIE L*a*b* reference

    sampleLab

    CIE L*a*b* sample

    See also

    #cmc

    #cmcPerceptibility

  9. def cmcPerceptibility(referenceLab: Array[Double], sampleLab: Array[Double]): Double

    Compute color deference between color using Delta CMC(1:c) formula "for imperceptibility", see http://www.brucelindbloom.com/Eqn_DeltaE_CMC.html

    Compute color deference between color using Delta CMC(1:c) formula "for imperceptibility", see http://www.brucelindbloom.com/Eqn_DeltaE_CMC.html

    referenceLab

    CIE L*a*b* reference

    sampleLab

    CIE L*a*b* sample

    See also

    #cmcAcceptability

    #cmc

  10. def e2000(lab1: Lab, lab2: Lab, kL: Double = 1.0, kC: Double = 1.0, kH: Double = 1.0): Double

    Compute color deference between color using CIE Delta E 200 formula.

    Compute color deference between color using CIE Delta E 200 formula. See http://www.brucelindbloom.com/Eqn_DeltaE_CIE2000.html

    lab1

    CIE L*a*b* sample 1

    lab2

    CIE L*a*b* sample 2

    returns

    delta E 2000

  11. def e2000(lab1: Array[Double], lab2: Array[Double]): Double

    Compute color deference between color using CIE Delta E 200 formula.

    Compute color deference between color using CIE Delta E 200 formula. See http://www.brucelindbloom.com/Eqn_DeltaE_CIE2000.html

    lab1

    CIE L*a*b* sample 1

    lab2

    CIE L*a*b* sample 2

    returns

    delta E 2000

  12. def e76(lab1: Lab, lab2: Lab): Double

    Compute color deference between color using CIE Delta E 1976 formula (equivalent to Euclidean distance in L*a*b* space).

    Compute color deference between color using CIE Delta E 1976 formula (equivalent to Euclidean distance in L*a*b* space). See http://www.brucelindbloom.com/index.html?Eqn_DeltaE_CIE94.html

    lab1

    CIE L*a*b* reference

    lab2

    CIE L*a*b* sample

    returns

    delta E

  13. def e76(lab1: Array[Double], lab2: Array[Double]): Double

    Compute color deference between color using CIE Delta E 1976 formula (equivalent to Euclidean distance in L*a*b* space).

    Compute color deference between color using CIE Delta E 1976 formula (equivalent to Euclidean distance in L*a*b* space). See http://www.brucelindbloom.com/index.html?Eqn_DeltaE_CIE94.html

    lab1

    CIE L*a*b* reference

    lab2

    CIE L*a*b* sample

    returns

    delta E

  14. def e94GraphicArts(referenceLab: Lab, sampleLab: Lab): Double

    Compute color deference between color using CIE Delta E 1994 formula, assuming graphic arts constants.

    Compute color deference between color using CIE Delta E 1994 formula, assuming graphic arts constants. See http://www.brucelindbloom.com/index.html?Eqn_DeltaE_CIE94.html

    referenceLab

    CIE L*a*b* reference

    sampleLab

    CIE L*a*b* sample

    returns

    delta E

    See also

    #e94Textiles

  15. def e94GraphicArts(referenceLab: Array[Double], sampleLab: Array[Double]): Double

    Compute color deference between color using CIE Delta E 1994 formula, assuming graphic arts constants.

    Compute color deference between color using CIE Delta E 1994 formula, assuming graphic arts constants. See http://www.brucelindbloom.com/index.html?Eqn_DeltaE_CIE94.html

    referenceLab

    CIE L*a*b* reference

    sampleLab

    CIE L*a*b* sample

    returns

    delta E

    See also

    #e94Textiles

  16. def e94Textiles(referenceLab: Lab, sampleLab: Lab): Double

    Compute color deference between color using CIE Delta E 1994 formula, assuming textile constants.

    Compute color deference between color using CIE Delta E 1994 formula, assuming textile constants. See http://www.brucelindbloom.com/index.html?Eqn_DeltaE_CIE94.html

    referenceLab

    CIE L*a*b* reference

    sampleLab

    CIE L*a*b* sample

    returns

    delta E

    See also

    #e94GraphicArts

  17. def e94Textiles(referenceLab: Array[Double], sampleLab: Array[Double]): Double

    Compute color deference between color using CIE Delta E 1994 formula, assuming textile constants.

    Compute color deference between color using CIE Delta E 1994 formula, assuming textile constants. See http://www.brucelindbloom.com/index.html?Eqn_DeltaE_CIE94.html

    referenceLab

    CIE L*a*b* reference

    sampleLab

    CIE L*a*b* sample

    returns

    delta E

    See also

    #e94GraphicArts

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