colour.difference.JND_CIE1976

colour.difference.JND_CIE1976 = 2.3

Just Noticeable Difference (JND) according to CIE 1976 colour difference formula, i.e. Euclidean distance in CIE L*a*b* colourspace.

Notes

A standard observer sees the difference in colour as follows:

  • 0 < \(\Delta E^*_{ab}\) < 1 : Observer does not notice the difference.

  • 1 < \(\Delta E^*_{ab}\) < 2 : Only experienced observer can notice the difference.

  • 2 < \(\Delta E^*_{ab}\) < 3:5 : Unexperienced observer also notices the difference.

  • 3:5 < \(\Delta E^*_{ab}\) < 5 : Clear difference in colour is noticed.

  • 5 < \(\Delta E^*_{ab}\) : Observer notices two different colours.

References

[MT11]

JND_CIE1976 : numeric