Ricco's Law
From Wikipedia, the free encyclopedia
 |
This article requires authentication or verification by an expert. Please assist in recruiting an expert or improve this article yourself. See the talk page for details. This article has been tagged since April 2007. |
 |
The introduction to this June 2007 provides insufficient context for those unfamiliar with the subject. Please help improve the article with a good introductory style. |
 |
This article does not cite any references or sources. (August 2006) Please help improve this article by adding citations to reliable sources. Unverifiable material may be challenged and removed. |
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.
