colour.JMh_CIECAM02_to_CAM02LCD#

colour.JMh_CIECAM02_to_CAM02LCD(JMh: Domain100_100_360) → Range100[source]#

Convert from CIECAM02 \(JMh\) correlates array to Luo et al. (2006) CAM02-LCD colourspace \(J'a'b'\) array.

Parameters:: JMh (Domain100_100_360) – CIECAM02 correlates array \(JMh\).
Returns:: Luo et al. (2006) CAM02-LCD colourspace \(J'a'b'\) array.
Return type:: numpy.ndarray

Notes

LCD in CAM02-LCD stands for Large Colour Differences.

Domain	Scale - Reference	Scale - 1
`JMh`	`J` : 100 `M` : 100 `h` : 360	`J` : 1 `M` : 1 `h` : 1

Domain

Scale - Reference

Scale - 1

JMh

J : 100

M : 100

h : 360

J : 1

M : 1

h : 1

Range	Scale - Reference	Scale - 1
`Jpapbp`	100	1

References

[LCL06]

Examples

>>> from colour.appearance import (
...     VIEWING_CONDITIONS_CIECAM02,
...     XYZ_to_CIECAM02,
... )
>>> XYZ = np.array([19.01, 20.00, 21.78])
>>> XYZ_w = np.array([95.05, 100.00, 108.88])
>>> L_A = 318.31
>>> Y_b = 20.0
>>> surround = VIEWING_CONDITIONS_CIECAM02["Average"]
>>> specification = XYZ_to_CIECAM02(XYZ, XYZ_w, L_A, Y_b, surround)
>>> JMh = (specification.J, specification.M, specification.h)
>>> JMh_CIECAM02_to_CAM02LCD(JMh)
array([ 54.9043313...,  -0.0845039...,  -0.0685483...])

colour.JMh_CIECAM02_to_CAM02LCD#

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