matlab code gamma transformations

matlab code gamma transformations

a=imread('Penguins.jpg');
subplot(2,2,1);
imshow(a);
title 'Original Image';
b=im2double(a);
a1=input('enter value a');
ga1=input('enter value gamma');
s=(a1*(b.^ga1))*256;
s1=uint8(s);
subplot(2,2,2);
imshow(s1);
title 'Image 1';

a2=input('enter value a');
ga2=input('enter value gamma');
sp=(a2*(b.^ga2))*256;
s2=uint8(sp);
subplot(2,2,3);
imshow(s2);
title 'Image 2';


a3=input('enter value a');
ga3=input('enter value gamma');
sp2=(a3*(b.^ga3))*256;
s3=uint8(sp2);
subplot(2,2,4);
imshow(s3);
title 'Image 3';