colour.difference.delta_E_HyAB#

Compute the colour difference between two CIE L*a*b* colourspace arrays using a combination of a Euclidean metric in hue and chroma with a city-block metric to incorporate lightness differences.

This metric is intended for large colour differences, on the order of 10 CIE L*a*b* units or greater.

Parameters:

Lab_1 (Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 100]) – CIE L*a*b* colourspace array 1.
Lab_2 (Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 100]) – CIE L*a*b* colourspace array 2.

Returns:

Colour difference \(\Delta E_{HyAB}\).

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
`Lab_1`	100	1
`Lab_2`	100	1

References

[AATF20]

Examples

>>> Lab_1 = np.array([39.91531343, 51.16658481, 146.12933781])
>>> Lab_2 = np.array([53.12207516, -39.92365056, 249.54831278])
>>> delta_E_HyAB(Lab_1, Lab_2)
151.0215481...

colour.difference.delta_E_HyAB#

This Page