colour.LLAB_Specification¶
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class
colour.
LLAB_Specification
[source]¶ Defines the :math:`LLAB(l:c)` 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 \(L_L\).
C (numeric or array_like) – Correlate of chroma \(Ch_L\).
h (numeric or array_like) – Hue angle \(h_L\) in degrees.
s (numeric or array_like) – Correlate of saturation \(s_L\).
M (numeric or array_like) – Correlate of colourfulness \(C_L\).
HC (numeric or array_like) – Hue \(h\) composition \(H^C\).
a (numeric or array_like) – Opponent signal \(A_L\).
b (numeric or array_like) – Opponent signal \(B_L\).
Notes
This specification is the one used in the current model implementation.
References
Create new instance of LLAB_Specification(J, C, h, s, M, HC, a, b)
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__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 5
J
Alias for field number 0
M
Alias for field number 4
a
Alias for field number 6
b
Alias for field number 7
h
Alias for field number 2
s
Alias for field number 3