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| %Require: Fix the number of clusters C,
%the degree of fuzziness m > 1,
%parameters in table 1,
%initialize randomly position (c(0) ij ) and velocity of each particle.
Calculate the filtered image ¯ X of the image X
Calculate the membership degrees (u(0) ij ) by equation (9) using the Euclidian distance.
for k = 1 to nbmaxiter do
for each particle do
Calculate the Mahalanobis distance using U(k−1) in equation (10), (11) and (12)
Calculate U(k) using equation (9)
Calculate the fitness function based on the Mahalanobis distance, using equation (7)
Update the individual best solution pbest and find the global best solution gbest
Calculate the velocity and position of particle using equations (3) and (4)
end for
if condition (5) then
Go to 15
end if
end for
return ci the centers of clusters (positions of particles) and the membership degrees uij |
