colour.Hunt_Specification

class colour.Hunt_Specification[source]

Defines 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 (numeric or array_like) – Correlate of Lightness \(J\).

  • C (numeric or array_like) – Correlate of chroma \(C_94\).

  • h (numeric or array_like) – Hue angle \(h_S\) in degrees.

  • s (numeric or array_like) – Correlate of saturation \(s\).

  • Q (numeric or array_like) – Correlate of brightness \(Q\).

  • M (numeric or array_like) – Correlate of colourfulness \(M_94\).

  • H (numeric or array_like) – Hue \(h\) quadrature \(H\).

  • HC (numeric or array_like) – Hue \(h\) composition \(H_C\).

Notes

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

References

[Fai13f], [Hun04]

Create new instance of Hunt_Specification(J, C, h, s, Q, M, H, HC)

__init__()

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__

Initialize self.

count(value)

index(value, [start, [stop]])

Raises ValueError if the value is not present.

Attributes

C

Alias for field number 1

H

Alias for field number 6

HC

Alias for field number 7

J

Alias for field number 0

M

Alias for field number 5

Q

Alias for field number 4

h

Alias for field number 2

s

Alias for field number 3