=======
clear all;
close all;
clc;
I=imread('strawberries.jpg');
greenChannel=I(:,:,2);
Ia=I;
Ia(:,:,2)=imnoise(greenChannel,'salt & pepper',0.01);
imwrite(Ia,'./strawberries_noise1.jpg');
Ib=imread('./strawberries_noise1.jpg');
I1a=double(I(:,:,1))-double(Ia(:,:,1));
I2a=double(I(:,:,2))-double(Ia(:,:,2));
I3a=double(I(:,:,3))-double(Ia(:,:,3));
I1b=double(I(:,:,1))-double(Ib(:,:,1));
I2b=double(I(:,:,2))-double(Ib(:,:,2));
I3b=double(I(:,:,3))-double(Ib(:,:,3));
figure;
subplot(2,3,1);imshow(mat2gray(I1a));title('no noise on RED')
subplot(2,3,2);imshow(mat2gray(I2a));title('noise on GREEN')
subplot(2,3,3);imshow(mat2gray(I3a));title('no noise on BLUE')
subplot(2,3,4);imshow(mat2gray(I1b));
subplot(2,3,5);imshow(mat2gray(I2b));
subplot(2,3,6);imshow(mat2gray(I3b));
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