Despite its subjective and personal sensory nature, colour can be evaluated numerically. Among the various colour representation models, we use the CIE L*a*b* model, developed in 1976 by the International Commission on Illumination.
Colour measurement is important in countless industrial applications. In particular, we can mention controlling a surface treatment for aesthetic purposes, or inspecting the effect of solar radiation on the evolution of the colour of a material.
Some typical examples of applications: