colour.models.oetf_H273_LogSqrt#

colour.models.oetf_H273_LogSqrt(L_c)[source]#

Define Recommendation ITU-T H.273 opto-electronic transfer function (OETF) for logarithmic encoding (100*Sqrt(10):1 range).

Parameters:: L_c – Scene Luminance \(L_c\).
Returns:: Corresponding electrical signal \(V\).
Return type:: numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
`L_c`	[0, 1]	[0, 1]

Range	Scale - Reference	Scale - 1
`V`	[0, 1]	[0, 1]

References

[InternationalTUnion21]

Warning

The function is clamped to domain [colour.models.oetf_H273_LogSqrt() (sqrt(10) / 1000), np.inf].

Examples

>>> oetf_H273_LogSqrt(0.18)  
0.702109002041...
>>> oetf_H273_LogSqrt(0.003162277660168)  
0.0
>>> oetf_H273_LogSqrt(0.0001)  
0.0
>>> oetf_H273_LogSqrt(1.0)  
1.0