Write
a MATLAB code to perform the following gray level transformation and display
original image and resultant image.
a.
Identity image
b.
Image negative
c.
Log transformation
d. Power
law transformation
CODE:
clear all;
close all;
clc;
a=imread('cameraman.tif');
for i=1:256
for j=1:256
t(i,j)=a(i,j);
end
end
for i=1:256
for j=1:256
n(i,j)=255-a(i,j);
end
end
d=im2double(a);
l=d;
for i=1:256
for j=1:256
l(i,j)=log10(1+d(i,j));
end
end
for i=1:256
for j=1:256
p(i,j)=power(a(i,j),2);
end
end
subplot(2,3,1);
imshow(a);
title('image of
cameramen','color','r');
subplot(2,3,2);
imshow(t);
title('image after
identity transformation','color','m');
subplot(2,3,3);
imshow(n);
title('image after
negative transformation','color','r');
subplot(2,3,4);
imshow(l);
title('image after
log transformation','color','m');
subplot(2,3,5);
imshow(p);
title('image after
power law transformation','color','m');
OUTPUT:
