Color constancy is an example of subjective constancy and a feature of the human color perception system which ensures that the perceived color of objects remains relatively constant under varying illumination conditions. A green apple for instance looks green to us at midday, when the main illumination is white sunlight, and also at sunset, when the main illumination is red. This helps us identify objects.
Read more about Color Constancy: Color Vision, Physiological Basis, Retinex Theory
Famous quotes containing the words color and/or constancy:
“Rain falls into the open eyes of the dead
Again again with its pointless sound
When the moon finds them they are the color of everything”
—William Stanley Merwin (b. 1927)
“The constancy of the wise is nothing else but the knack of concealing their passion and trouble.”
—François, Duc De La Rochefoucauld (1613–1680)