% For each cell in an image

for Vp ∈ p

% Copy previous state

$l_p^{t+1}=l_p^t$;

${\theta }_p^{t+1}={\theta }_p^t$;

% Neighbors try to attack current cell

for Vq ∈ N(p)

if $g\left({\Vert {\stackrel{\rightharpoonup }{C}}_p-{\stackrel{\rightharpoonup }{C}}_q\Vert }_2\right)\cdot {\theta }_q^t>{\theta }_p^t$

$l_p^{t+1}=l_p^t$

${\theta }_p^{t+1}=g\left({\Vert {\stackrel{\rightharpoonup }{C}}_p-{\stackrel{\rightharpoonup }{C}}_q\Vert }_2\right)\cdot {\theta }_q^t$

end if

end for

end for