Editing Color vision (section)

=== Chromatic adaptation ===
{{Main|Chromatic adaptation}}

In color vision, chromatic adaptation refers to [[color constancy]]; the ability of the visual system to preserve the appearance of an object under a wide range of light sources.<ref name="Fairchild_2005">{{cite book| vauthors = Fairchild MD |title=Color Appearance Models|publisher=Wiley|year=2005|isbn=978-0-470-01216-1|page=146|chapter=8. Chromatic Adaptation|chapter-url=https://books.google.com/books?id=8_TxzK2B-5MC&q=%22chromatic+adaptation%22&pg=PA146}}</ref> For example, a white page under blue, pink, or purple light will reflect mostly blue, pink, or purple light to the eye, respectively; the brain, however, compensates for the effect of lighting (based on the color shift of surrounding objects) and is more likely to interpret the page as white under all three conditions, a phenomenon known as [[color constancy]].

In color science, chromatic adaptation is the estimation of the representation of an object under a different light source from the one in which it was recorded. A common application is to find a ''chromatic adaptation transform'' (CAT) that will make the recording of a neutral object appear neutral ([[color balance]]), while keeping other colors also looking realistic.<ref>{{cite web | vauthors = Süsstrunk S | url = http://ivrgwww.epfl.ch/research/past_topics/chromatic_adaptation.html | title = Chromatic Adaptation | archive-url = https://web.archive.org/web/20110818184220/http://ivrgwww.epfl.ch/research/past_topics/chromatic_adaptation.html| archive-date = 2011-08-18 | work = The Image and Visual Representation Lab (IVRL) }}</ref> For example, chromatic adaptation transforms are used when converting images between [[ICC profile]]s with different [[white point]]s. [[Adobe Photoshop]], for example, uses the Bradford CAT.<ref>{{cite web | vauthors = Lindbloom B | url = http://www.brucelindbloom.com/Eqn_ChromAdapt.html | title = Chromatic Adaptation | archive-url = https://web.archive.org/web/20110926223613/http://www.brucelindbloom.com/Eqn_ChromAdapt.html| archive-date=2011-09-26 | work = Lindbloom.com }}</ref>