% Logarithmic Transformation of an image

i=imread(‘asd.jpg’);

g=rgb2gray(i);

c=input('Enter the constant value, c = ');

[M,N]=size(g);

        for x = 1:M

            for y = 1:N

                m=double(g(x,y));

                z(x,y)=c.*log10(1+m);

            end

        end

subplot(1,2,1),imshow(i);

subplot(1,2,2), imshow(z);