%() Error: Illegal use of reserved keyword "end".

clc;
clearvars;
close all;
% % % % % % %
 % % % % % %
I =imread("moon.tif");
I=imresize(I,[512,512]);
% I=rgb2gray(I);
figure(1);
imshow(I);

% % % % % % % % %
% % % % % % % % Fourth Order PDEs % % % % % % % % % %
T=1.0;
I1=fpdepyou(I,T);

figure; imshow(I,[]); title('Original image');

N = 50; % Number of contaminated realizations
Ic = NaN(size(I,1),size(I,2),N); % 3D matrix that holds the 'N' realizations
sigma = 1.5; % Strandart deviation of the Gaussian distributions
Mult_noise = NaN(size(I)); % Multiplicative noise
%% Contamination of the 'N' realizations:
for ID_realz = 1:N
    rng('shuffle');
    Mult_noise = (sigma*randn(size(I)))+((1j)*(sigma*randn(size(I)))); 
    Ic(:,:,ID_realz) = abs(I.*Mult_noise);  
    
    clear('Mult_noise');
end;

Error using .*
Complex integer arithmetic is not supported.

Answer 1

[Sulaymon Eshkabilov]

Here is the corrected part of your code:

...
    for ID_realz = 1:N
    rng('shuffle');
    Mult_noise = (sigma*randn(size(I)))+((1j)*(sigma*randn(size(I)))); 
    Ic(:,:,ID_realz) = double(I).*abs(Mult_noise);  
    
    clear('Mult_noise');
    end

[Sheri]

Unable to perform assignment

because the size of the left

side is 512-by-512 and the size

of the right side is

512-by-512-by-3.

[Sheri]

Unable to perform assignment

because the size of the left

side is 512-by-512 and the size

of the right side is

512-by-512-by-3.

Error in six_ferb_4th_OPDE (line 34)

Ic(:,:,ID_realz) = double(I).*abs(Mult_noise);

>>