L1=imread('portrait.jpg');
figure;
imshow(zeros(800,800));
L2 = fliplr(L1);
L3 = flipud(L1);
L4 = fliplr(L3);
subplot(3,2,[1 3 5]), subimage(L1);
axis off
subplot(3,2,2), subimage(L2);
axis off
subplot(3,2,4), subimage(L3);
axis off
subplot(3,2,6), subimage(L4);
axis off