Erlang (Gamma) Noise With PDF In Digital Image Processing (CSE)
Erlang (Gamma) Noise With PDF In Digital Image Processing (CSE)
Erlang
(Gamma) Noise
The PDR of Erlang noise is given by
(1)
Where the
parameters are such that a>0, b is a positive integer and “!” indicates factorial.
The mean and variance of this density are given by
and
……(3)
fig. Gama noise
fig. shows a plot
of this density. Although equation (1) often is referred to as the gamma
density, strictly speaking this correct only when the denominator is the gamma
function Г(b). When the denominator is as shown, the density is more
approximately called the Erlang density.