CODE:
clear all;
close all;
clc;
a=imread('cameraman.tif');
a=double(a);
so=[-1,-2,-1;0,0,0;1,2,1];
lo=[1,1,1;1,-8,1;1,1,1];
l=[];
s=[];
for m=2:255
for n=2:255
s(m,n)=a(m+1,n+1)*so(1,1) +
a(m+1,n)*so(1,2) + a(m+1,n-1)*so(1,3) + a(m,n+1)*so(2,1) + a(m,n)*so(2,2) +
a(m,n-1)*so(2,3) + a(m-1,n+1)*so(3,1) + a(m-1,n)*so(3,2) + a(m-1,n-1)*so(3,3);
end
end
for m=2:255
for n=2:255
l(m,n)=a(m+1,n+1)*lo(1,1) +
a(m+1,n)*lo(1,2) + a(m+1,n-1)*lo(1,3) + a(m,n+1)*lo(2,1) + a(m,n)*lo(2,2) +
a(m,n-1)*lo(2,3) + a(m-1,n+1)*lo(3,1) + a(m-1,n)*lo(3,2) + a(m-1,n-1)*lo(3,3);
end
end
subplot(1,3,1);
imshow(uint8(a));
title('image of cameramen','color','r');
subplot(1,3,2);
imshow(uint8(s));
title('image-SOBEL ','color','r');
subplot(1,3,3);
imshow(uint8(l));
title('image-LAPLACIAN','color','r');
OUTPUT:
