Ricco's Law

Ricco's Law

Ricco's Law explains the visual relationship between a target area and target contrast required for detection. It is shown below

log (Contrast) = K - log(Area)

Ricco's Law is applicable for regions where the target being detected is unresolved. This region is variable based on the amount of background luminance. Ricco's Law is based on the fact that the 'Signal' of the target being detected is proportional to the threshold contrast multiplied by the area. Therefore, the contrast threshold required for detection is proportional to the signal to noise ratio multiplied by the noise divided by the area. This leads to the above equation.

ee also

*Spatial Summation


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Ricco's law — Ric·co s law rik ōz n a statement in physiology: when a light source of a given size and intensity is just capable of producing visual sensation, reduction of either size or intensity will make it invisible Ric·cò rēk kō Annibale (1844 1919)… …   Medical dictionary

  • ricco's law — ˈri(ˌ)kōz noun Usage: usually capitalized R Etymology: after Ricco, its formulator : a statement in physiology: when a light source of a given size and intensity is just capable of producing visual sensation reduction of either size or intensity… …   Useful english dictionary

  • law — 1. A principle or rule. 2. A statement of fact detailing a sequence or relation of phenomena that is invariable under given conditions. SEE ALSO: principle, rule, theorem. [A.S. lagu] Alexander l. states that a jerky nystagmus becomes worse when… …   Medical dictionary

  • Ricco — Annibale, Italian astrophysicist, 1844–1919. See R. law …   Medical dictionary

  • eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

  • закон Рикко — закономерность, открытая в 1877 г., согласно коей такие характеристики раздражителя порогового, как яркость и угловая площадь воздействия, находятся в обратно пропорциональной зависимости. Этот закон действен для раздражителей световых небольших… …   Большая психологическая энциклопедия

  • 2008 Tour de France — Infobox Cycling race report name = 2008 Tour de France image caption = Tour de France 2008 Course Outline date = July 5 ndash;July 27 stages = 21 distance = 3559 unit = km time = 87h 52 52 speed = 40.50 first = Carlos Sastre first nat = Spain… …   Wikipedia

  • List of doping cases in cycling — The following is an incomplete list of doping cases in cycling, where doping means use of physiological substances or abnormal method to obtain an artificial increase of performance . It is neither a list of shame nor a list of illegality, as the …   Wikipedia

  • Gambino crime family — Gambino Family redirects here. For the hip hop group, see Gambino Family (group). Gambino crime family Carlo Gambino, the boss of the family during 1957–1976. In New York City, New York Founded by …   Wikipedia

  • Dean Martin — This article is about the American singer and actor. For the Arizona politician, see Dean Martin (politician). Dean Martin Dean Martin in the film Rio Bravo (1959) Background information …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”