colour.Nayatani95_Specification¶
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class
colour.
Nayatani95_Specification
[source]¶ Defines the Nayatani (1995) 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: - Lstar_P (numeric or array_like) – Correlate of achromatic Lightness \(L_p^\star\).
- C (numeric or array_like) – Correlate of chroma \(C\).
- h (numeric or array_like) – Hue angle \(\theta\) in degrees.
- s (numeric or array_like) – Correlate of saturation \(S\).
- Q (numeric or array_like) – Correlate of brightness \(B_r\).
- M (numeric or array_like) – Correlate of colourfulness \(M\).
- H (numeric or array_like) – Hue \(h\) quadrature \(H\).
- HC (numeric or array_like) – Hue \(h\) composition \(H_C\).
- Lstar_N (numeric or array_like) – Correlate of normalised achromatic Lightness \(L_n^\star\).
Notes
- This specification is the one used in the current model implementation.
References
Create new instance of Nayatani95_Specification(Lstar_P, C, h, s, Q, M, H, HC, Lstar_N)
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__init__
()¶ x.__init__(…) initializes x; see help(type(x)) for signature
Methods
count
(…)index
((value, [start, …)Raises ValueError if the value is not present.