ABSTRACT
Color constancy is one of the most amazing features of the human visual system. When we look at objects under different illuminations, their colors stay relatively constant. This helps humans to identify objects conveniently. While the precise physiological mechanism is not fully known, it has been postulated that the eyes are responsible for capturing different wavelengths of the light reflected by an object, and the brain attempts to “discount” the contribution of the illumination so that the color perception matches more closely with the object reflectance, and therefore is mostly constant under different illuminations [1].
