9
The RGGROW
Algorithm
• Let R be the N pixel region so far and P be a
neighboring
pixel
with gray tone y.
• Define the mean X and scatter S (sample variance) by
X = 1/N å I(r,c)
S = å
(I(r,c) - X)
2
2
(r,c) Î R
(r,c) Î R
2
