Colour Difference¶
Delta E¶
colour
delta_E (a, b[, method]) |
Returns the difference \(\Delta E_{ab}\) between two given CIE L*a*b* or \(J'a'b'\) colourspace arrays using given method. |
DELTA_E_METHODS |
Supported \(\Delta E_{ab}\) computations methods. |
CIE 1976¶
colour.difference
delta_E_CIE1976 (Lab_1, Lab_2) |
Returns the difference \(\Delta E_{76}\) between two given CIE L*a*b* colourspace arrays using CIE 1976 recommendation. |
CIE 1994¶
colour.difference
delta_E_CIE1994 (Lab_1, Lab_2[, textiles]) |
Returns the difference \(\Delta E_{94}\) between two given CIE L*a*b* colourspace arrays using CIE 1994 recommendation. |
CIE 2000¶
colour.difference
delta_E_CIE2000 (Lab_1, Lab_2[, textiles]) |
Returns the difference \(\Delta E_{00}\) between two given CIE L*a*b* colourspace arrays using CIE 2000 recommendation. |
CMC¶
colour.difference
delta_E_CMC (Lab_1, Lab_2[, l, c]) |
Returns the difference \(\Delta E_{CMC}\) between two given CIE L*a*b* colourspace arrays using Colour Measurement Committee recommendation. |
Luo, Cui and Li (2006)¶
colour.difference
delta_E_CAM02LCD (Jpapbp_1, Jpapbp_2) |
Returns the difference \(\Delta E'\) between two given Li et al.(2017) CAM16-LCD colourspaces \(J'a'b'\) arrays.. |
delta_E_CAM02SCD (Jpapbp_1, Jpapbp_2) |
Returns the difference \(\Delta E'\) between two given Li et al.(2017) CAM16-SCD colourspaces \(J'a'b'\) arrays.. |
delta_E_CAM02UCS (Jpapbp_1, Jpapbp_2) |
Returns the difference \(\Delta E'\) between two given Li et al.(2017) CAM16-UCS colourspaces \(J'a'b'\) arrays.. |
Li, Li, Wang, Zu, Luo, Cui, Melgosa, Brill and Pointer (2017)¶
colour.difference
delta_E_CAM16LCD (Jpapbp_1, Jpapbp_2) |
Returns the difference \(\Delta E'\) between two given Li et al.(2017) CAM16-LCD colourspaces \(J'a'b'\) arrays.. |
delta_E_CAM16SCD (Jpapbp_1, Jpapbp_2) |
Returns the difference \(\Delta E'\) between two given Li et al.(2017) CAM16-SCD colourspaces \(J'a'b'\) arrays.. |
delta_E_CAM16UCS (Jpapbp_1, Jpapbp_2) |
Returns the difference \(\Delta E'\) between two given Li et al.(2017) CAM16-UCS colourspaces \(J'a'b'\) arrays.. |
DIN99¶
colour.difference
delta_E_DIN99 (Lab_1, Lab_2[, textiles]) |
Returns the difference \(\Delta E_{DIN99}\) between two given CIE L*a*b* colourspace arrays using DIN99 formula. |