[MATLAB] Gamma,Log and Negetive Trasformation Code

log_input=imread('fig3.jpg');

gamma_input=imread('fig6.jpg');

neg_input=imread('fig5.jpg');



%img=rgb2gray(inpt);

%imview(img);

[m n]=size(log_input);

[o p]=size(gamma_input);

[q r]=size(neg_input);



log_opt=zeros(m,n);

gamma_opt=zeros(o,p);

neg_opt=zeros(q,r);

for  k=1:m

    for l=1:n

        log_opt(k,l)=30*log(double(log_input(k,l)));

    end

end

for  k=1:o

    for l=1:p

        gamma_opt(k,l)=0.6*power(double(gamma_input(k,l)),0.98);

        end

end



for  k=1:q

    for l=1:r

        neg_opt(k,l)=255-neg_input(k,l);

    end

end



subplot(3,2,1);

imshow(uint8(log_input));

title('Original image');

subplot(3,2,2);

imshow(uint8(log_opt));

title('Log Transformation');

subplot(3,2,3);

imshow(uint8(gamma_input));

title('Original image');

subplot(3,2,4);

imshow(uint8(gamma_opt));

title('Gamma Transformation');

subplot(3,2,5);

imshow(uint8(neg_input));

title('Original image');

subplot(3,2,6);

imshow(uint8(neg_opt));

title('Negetive Transformation');