colour.RLAB_Specification¶
-
class
colour.
RLAB_Specification
[source]¶ Defines the RLAB colour appearance model specification.
This specification has field names consistent with the remaining colour appearance models in
colour.appearance
but diverge from Fairchild (2013) reference.- Parameters
J (numeric or array_like) – Correlate of Lightness \(L^R\).
C (numeric or array_like) – Correlate of achromatic chroma \(C^R\).
h (numeric or array_like) – Hue angle \(h^R\) in degrees.
s (numeric or array_like) – Correlate of saturation \(s^R\).
HC (numeric or array_like) – Hue \(h\) composition \(H^C\).
a (numeric or array_like) – Red-green chromatic response \(a^R\).
b (numeric or array_like) – Yellow-blue chromatic response \(b^R\).
Notes
This specification is the one used in the current model implementation.
References
Create new instance of RLAB_Specification(J, C, h, s, HC, a, b)
-
__init__
()¶ Initialize self. See help(type(self)) for accurate signature.
Methods
Initialize self.
count
(value)index
(value, [start, [stop]])Raises ValueError if the value is not present.
Attributes
C
Alias for field number 1
HC
Alias for field number 4
J
Alias for field number 0
a
Alias for field number 5
b
Alias for field number 6
h
Alias for field number 2
s
Alias for field number 3