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%read an image in matrix I %read an image in matrix m,n,c I=imread("peppers.png"); [m,n,c]=size(1); 3=zeros(m,n); %creating zero matrix of size m x n 31=zeros(m, n); %initalizing the values in the zero matrix J and J1 for i=1:m J(i,j)=(I(i,j,1)+I(i,j,2)+I(i,j,3))/3; J1(i,j)=(0.299*1(i,j,1)+0.587*1(i,j,2)+0.114*1(i,j,3))/3; 1 2 3 4 5 6 7 8 9 10 11 for j=1:n 12 13 14 end; 15 end; 16 17 figure; 18 subplot(2,2,1); 19 imshow(I); 20 title("original"); 21 subplot(2,2,2); 22 imshow(3,[]); 23 title(""); 24 subplot(2,2,3); 25 imshow(31,[]);
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