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 public static final enum ColorSpace.Adaptation 
   extends Enum<ColorSpace.Adaptation>   

List of adaptation matrices that can be used for chromatic adaptation using the von Kries transform. These matrices are used to convert values in the CIE XYZ space to values in the LMS space (Long Medium Short).

Given an adaptation matrix $$A$$, the conversion from XYZ to LMS is straightforward:

$$\left[ \begin{array}{c} L\\ M\\ S \end{array} \right] = A \left[ \begin{array}{c} X\\ Y\\ Z \end{array} \right]$$

The complete von Kries transform $$T$$ uses a diagonal matrix noted $$D$$ to perform the adaptation in LMS space. In addition to $$A$$ and $$D$$, the source white point $$W1$$ and the destination white point $$W2$$ must be specified:

\begin{align*} \left[ \begin{array}{c} L_1\\ M_1\\ S_1 \end{array} \right] &= A \left[ \begin{array}{c} W1_X\\ W1_Y\\ W1_Z \end{array} \right] \\ \left[ \begin{array}{c} L_2\\ M_2\\ S_2 \end{array} \right] &= A \left[ \begin{array}{c} W2_X\\ W2_Y\\ W2_Z \end{array} \right] \\ D &= \left[ \begin{matrix} \frac{L_2}{L_1} & 0 & 0 \\ 0 & \frac{M_2}{M_1} & 0 \\ 0 & 0 & \frac{S_2}{S_1} \end{matrix} \right] \\ T &= A^{-1}.D.A \end{align*}

As an example, the resulting matrix $$T$$ can then be used to perform the chromatic adaptation of sRGB XYZ transform from D65 to D50:

$$sRGB_{D50} = T.sRGB_{D65}$$

• ColorSpace.Connector
• connect(ColorSpace, ColorSpace)

Summary

Enum values

ColorSpace.Adaptation  BRADFORD

Bradford chromatic adaptation transform, as defined in the CIECAM97s color appearance model.

ColorSpace.Adaptation  CIECAT02

CIECAT02 chromatic adaption transform, as defined in the CIECAM02 color appearance model.

ColorSpace.Adaptation  VON_KRIES

Public methods

 static ColorSpace.Adaptation  valueOf(String name) 
 static final Adaptation[]  values() 

Inherited methods

From class  java.lang.Enum 
From class  java.lang.Object 
From interface  java.lang.Comparable 

Enum values

ColorSpace.Adaptation BRADFORD

Bradford chromatic adaptation transform, as defined in the CIECAM97s color appearance model.

CIECAT02

ColorSpace.Adaptation CIECAT02

CIECAT02 chromatic adaption transform, as defined in the CIECAM02 color appearance model.

VON_KRIES

ColorSpace.Adaptation VON_KRIES

Public methods

valueOf

ColorSpace.Adaptation valueOf (String name)

Parameters
name String

Returns
ColorSpace.Adaptation

values

Adaptation[] values ()

Returns
Adaptation[]

• Exceptions

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