colour.CAM_Specification_Hunt

class colour.CAM_Specification_Hunt(J: Optional[FloatingOrNDArray] = <factory>, C: Optional[FloatingOrNDArray] = <factory>, h: Optional[FloatingOrNDArray] = <factory>, s: Optional[FloatingOrNDArray] = <factory>, Q: Optional[FloatingOrNDArray] = <factory>, M: Optional[FloatingOrNDArray] = <factory>, H: Optional[FloatingOrNDArray] = <factory>, HC: Optional[FloatingOrNDArray] = <factory>)[source]

Define the Hunt 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 (Optional[FloatingOrNDArray]) – Correlate of Lightness \(J\).

  • C (Optional[FloatingOrNDArray]) – Correlate of chroma \(C_94\).

  • h (Optional[FloatingOrNDArray]) – Hue angle \(h_S\) in degrees.

  • s (Optional[FloatingOrNDArray]) – Correlate of saturation \(s\).

  • Q (Optional[FloatingOrNDArray]) – Correlate of brightness \(Q\).

  • M (Optional[FloatingOrNDArray]) – Correlate of colourfulness \(M_94\).

  • H (Optional[FloatingOrNDArray]) – Hue \(h\) quadrature \(H\).

  • HC (Optional[FloatingOrNDArray]) – Hue \(h\) composition \(H_C\).

Return type

None

Notes

  • This specification is the one used in the current model implementation.

References

[Fai13f], [Hun04]

__init__(J: Optional[FloatingOrNDArray] = <factory>, C: Optional[FloatingOrNDArray] = <factory>, h: Optional[FloatingOrNDArray] = <factory>, s: Optional[FloatingOrNDArray] = <factory>, Q: Optional[FloatingOrNDArray] = <factory>, M: Optional[FloatingOrNDArray] = <factory>, H: Optional[FloatingOrNDArray] = <factory>, HC: Optional[FloatingOrNDArray] = <factory>) → None
Parameters

  • J (Optional[FloatingOrNDArray]) –

  • C (Optional[FloatingOrNDArray]) –

  • h (Optional[FloatingOrNDArray]) –

  • s (Optional[FloatingOrNDArray]) –

  • Q (Optional[FloatingOrNDArray]) –

  • M (Optional[FloatingOrNDArray]) –

  • H (Optional[FloatingOrNDArray]) –

  • HC (Optional[FloatingOrNDArray]) –

Return type

None

Methods

__init__([J, C, h, s, Q, M, H, HC])

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

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colour.XYZ_to_Hunt

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colour.VIEWING_CONDITIONS_HUNT