colour.CAM_Specification_Hellwig2022#
- class colour.CAM_Specification_Hellwig2022(J: float | NDArrayFloat | None = <factory>, C: float | NDArrayFloat | None = <factory>, h: float | NDArrayFloat | None = <factory>, s: float | NDArrayFloat | None = <factory>, Q: float | NDArrayFloat | None = <factory>, M: float | NDArrayFloat | None = <factory>, H: float | NDArrayFloat | None = <factory>, HC: float | NDArrayFloat | None = <factory>, J_HK: float | NDArrayFloat | None = <factory>, Q_HK: float | NDArrayFloat | None = <factory>)[source]#
Define the Hellwig and Fairchild (2022) colour appearance model specification.
This specification supports the Helmholtz-Kohlrausch effect extension from [HSF22].
- Parameters:
J (float | NDArrayFloat | None) – Correlate of Lightness \(J\).
C (float | NDArrayFloat | None) – Correlate of chroma \(C\).
h (float | NDArrayFloat | None) – Hue angle \(h\) in degrees.
s (float | NDArrayFloat | None) – Correlate of saturation \(s\).
Q (float | NDArrayFloat | None) – Correlate of brightness \(Q\).
M (float | NDArrayFloat | None) – Correlate of colourfulness \(M\).
H (float | NDArrayFloat | None) – Hue \(h\) quadrature \(H\).
HC (float | NDArrayFloat | None) – Hue \(h\) composition \(H^C\).
J_HK (float | NDArrayFloat | None) – Correlate of Lightness \(J_{HK}\) accounting for Helmholtz-Kohlrausch effect.
Q_HK (float | NDArrayFloat | None) – Correlate of brightness \(Q_{HK}\) accounting for Helmholtz-Kohlrausch effect.
References
- __init__(J: float | NDArrayFloat | None = <factory>, C: float | NDArrayFloat | None = <factory>, h: float | NDArrayFloat | None = <factory>, s: float | NDArrayFloat | None = <factory>, Q: float | NDArrayFloat | None = <factory>, M: float | NDArrayFloat | None = <factory>, H: float | NDArrayFloat | None = <factory>, HC: float | NDArrayFloat | None = <factory>, J_HK: float | NDArrayFloat | None = <factory>, Q_HK: float | NDArrayFloat | None = <factory>) None #
- Parameters:
J (float | NDArrayFloat | None)
C (float | NDArrayFloat | None)
h (float | NDArrayFloat | None)
s (float | NDArrayFloat | None)
Q (float | NDArrayFloat | None)
M (float | NDArrayFloat | None)
H (float | NDArrayFloat | None)
HC (float | NDArrayFloat | None)
J_HK (float | NDArrayFloat | None)
Q_HK (float | NDArrayFloat | None)
- Return type:
None
Methods
__init__
([J, C, h, s, Q, M, H, HC, J_HK, Q_HK])arithmetical_operation
(a, operation[, in_place])Perform given arithmetical operation with \(a\) operand on the
dataclass
-like class.Attributes
fields
Getter property for the fields of the
dataclass
-like class.items
Getter property for the
dataclass
-like class items, i.e., the field names and values.keys
Getter property for the
dataclass
-like class keys, i.e., the field names.values
Getter property for the
dataclass
-like class values, i.e., the field values.J
C
h
s
Q
M
H
HC
J_HK
Q_HK