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:
“‘Twas mercy brought me from my Pagan land,
Taught my benighted soul to understand
That there’s a God, that there’s a Saviour too:
Once I redemption neither sought nor knew.
Some view our sable race with scornful eye,
“Their color is a diabolic die.”
Remember, Christians, Negroes, black as Cain,
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—Phillis Wheatley (c. 1753–1784)
“Obstinacy in a bad cause is but constancy in a good.”
—Thomas Browne (1605–1682)