%Log transformation
clc;
clear all;
close all;
img1=imread('8.jpg');
%img1=imread('lena.bmp');
img1=rgb2gray(img1);
[r c]=size(img1);
figure(1);
subplot(2,2,1);
imshow(img1);
title('Input Image');
double_img=im2double(img1);
for c=1:3
logImg=c*log(1+double_img);
subplot(2,2,c+1);
imshow(logImg);
title(['Log Image c=',int2str(c)]);
end
