colour.difference.delta_E_CAM16UCS

colour.difference.delta_E_CAM16UCS(Jpapbp_1, Jpapbp_2)

Return the difference \(\Delta E'\) between two given Li et al. (2017) CAM16-UCS colourspaces \(J'a'b'\) arrays.

Parameters:

• Jpapbp_1 – Standard / reference Li et al. (2017) CAM16-UCS colourspaces \(J'a'b'\) array.

• Jpapbp_2 – Sample / test Li et al. (2017) CAM16-UCS colourspaces \(J'a'b'\) array.

Returns:

Colour difference \(\Delta E'\).

Return type:

numpy.ndarray

Warning

The \(J'a'b'\) array should have been computed with a Li et al. (2017) CAM16-LCD, CAM16-SCD, or CAM16-UCS colourspace and not with the CIE L*a*b* colourspace.

Notes

Domain	Scale - Reference	Scale - 1
Jpapbp_1	Jp_1 : [0, 100] ap_1 : [-100, 100] bp_1 : [-100, 100]	Jp_1 : [0, 1] ap_1 : [-1, 1] bp_1 : [-1, 1]
Jpapbp_2	Jp_2 : [0, 100] ap_2 : [-100, 100] bp_2 : [-100, 100]	Jp_2 : [0, 1] ap_2 : [-1, 1] bp_2 : [-1, 1]

References

[LLW+17]