Color constancy is the phenomenon that allows human vision to perceive the right color of an object or of a scene despite the scene is enlighted by a non neutral illuminant that leads to a biased reflection of the light on the object. The stake of White Balance Correction is to make an estimation of the scene illuminant and to correct the image. This illuminant is generally estimated with referenced grey objects placed on the scene, the measured chromaticity of these objects is then considered as the chromaticity of the global illuminant of the scene. This method gives a consistent neutral chromaticity on grey objects but may not give the desired result on colored objects.