colour.XYZ_to_IGPGTG

colour.XYZ_to_IGPGTG(XYZ)

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

Parameters

XYZ (array_like) – CIE XYZ tristimulus values.

Returns

\(I_GP_GT_G\) colourspace array.

Return type

ndarray

Notes

Domain	Scale - Reference	Scale - 1
XYZ	[0, 1]	[0, 1]

Range	Scale - Reference	Scale - 1
IGPGTG	IG : [0, 1] PG : [-1, 1] TG : [-1, 1]	IG : [0, 1] PG : [-1, 1] TG : [-1, 1]

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

References

[]

Examples

>>> XYZ = np.array([0.20654008, 0.12197225, 0.05136952])
>>> XYZ_to_IGPGTG(XYZ)  
array([ 0.4242125...,  0.1863249...,  0.1068922...])