colour.XYZ_to_CAM02LCD#

colour.XYZ_to_CAM02LCD(XYZ: ArrayLike, **kwargs: Any) → numpy.ndarray[source]#

Convert from CIE XYZ tristimulus values to Luo et al. (2006) CAM02-LCD colourspace \(J'a'b'\) array.

Parameters

XYZ (ArrayLike) – CIE XYZ tristimulus values.
kwargs (Any) – {colour.XYZ_to_CIECAM02()}, See the documentation of the previously listed definition. The default viewing conditions are that of IEC 61966-2-1:1999, i.e. sRGB 64 Lux ambient illumination, 80 \(cd/m^2\), adapting field luminance about 20% of a white object in the scene.

Returns

Luo et al. (2006) CAM02-LCD colourspace \(J'a'b'\) array.

Return type

numpy.ndarray

Warning

The XYZ_w parameter for colour.XYZ_to_CAM16() definition must be given in the same domain-range scale than the XYZ parameter.

Notes

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

Range	Scale - Reference	Scale - 1
`Jpapbp`	`Jp` : [0, 100] `ap` : [-100, 100] `bp` : [-100, 100]	`Jp` : [0, 1] `ap` : [-1, 1] `bp` : [-1, 1]

Range

Scale - Reference

Scale - 1

Jpapbp

Jp : [0, 100]

ap : [-100, 100]

bp : [-100, 100]

Jp : [0, 1]

ap : [-1, 1]

bp : [-1, 1]

References

Examples

>>> XYZ = np.array([0.20654008, 0.12197225, 0.05136952])
>>> XYZ_to_CAM02LCD(XYZ)  
array([ 46.6138615...,  39.3576023...,  15.9673043...])

colour.CAM02UCS_to_JMh_CIECAM02

colour.CAM02LCD_to_XYZ