colour.XYZ_to_ICaCb

colour.XYZ_to_ICaCb(XYZ)[source]

Converts from CIE XYZ tristimulus values to \(IC_AC_B\) colourspace.

Parameters

XYZ (array_like) – CIE XYZ tristimulus values.

Returns

\(IC_AC_B\) colourspace array.

Return type

ndarray

Notes

Domain

Scale - Reference

Scale - 1

XYZ

[0, 1]

[0, 1]

Range

Scale - Reference

Scale - 1

ICaCb

I : [0, 1]

Ca : [-1, 1]

Cb : [-1, 1]

I : [0, 1]

Ca: [-1, 1]

Cb: [-1, 1]

  • Input CIE XYZ tristimulus values must be adapted to CIE Standard Illuminant D Series D65.

References

[Frohlich17]

Examples

>>> XYZ = np.array([0.20654008, 0.12197225, 0.05136952])
>>> XYZ_to_ICaCb(XYZ)
array([ 0.06875297,  0.05753352,  0.02081548])