$ CV_{fg}$

$ CV_{fg}$ is the standard deviation, $ SD$, of the foreground pixels, $ F$, divided by the mean of the foreground pixels on each spot. That is:

$\displaystyle CV_{fg}=\frac{F_{SD}}{F_{mean}}.$    

According to [4], spots with irregular shapes or doughnut shapes, have a $ CV_{fg}$ value larger than $ 0.5$, while spots with good morphology range have a value of around $ 0.3$.



Bjørn Kåre Alsberg 2006-04-06