colour.CAM02LCD_to_XYZ¶
-
colour.
CAM02LCD_to_XYZ
(Jpapbp, **kwargs)[source]¶ Converts from Luo et al. (2006) CAM02-LCD colourspace \(J'a'b'\) array to CIE XYZ tristimulus values.
- Parameters
Jpapbp (array_like) – Luo et al. (2006) CAM02-LCD colourspace \(J'a'b'\) array.
- Other Parameters
**kwargs (dict, optional) – {
colour.CIECAM02_to_XYZ()
}, Please refer to the documentation of the previously listed definition. The default viewing conditions are that of IEC 61966-2-1:1999, i.e. sRGB 64 Lux ambiant illumination, 80 \(cd/m^2\), adapting field luminance about 20% of a white object in the scene.- Returns
CIE XYZ tristimulus values.
- Return type
ndarray
Warning
The
XYZ_w
parameter forcolour.XYZ_to_CAM16()
definition must be given in the same domain-range scale than theXYZ
parameter.Notes
LCD in CAM02-LCD stands for Large Colour Differences.
Domain
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
XYZ
[0, 1]
[0, 1]
References
Examples
>>> Jpapbp = np.array([46.61386154, 39.35760236, 15.96730435]) >>> CAM02LCD_to_XYZ(Jpapbp) array([ 0.2065400..., 0.1219722..., 0.0513695...])