Image Quantizer Demo

Shows the effect of different levels of quantizaiton on an RGB image in time lapse.

clf;
for (truncate = 0:8)
x = imread('aqua.jpg');
subplot(2,2,1);
imshow(x);
subplot(2,2,2);
x_t = (x/2^truncate) * 2^truncate;
%if above line doesn't work your MATLAB is old! use next line:
% x_t = uint8(double(uint8((double(x)/2^truncate))) * 2^truncate);
imshow(x_t);
subplot(2,2,3);
imshow(uint8(abs(double(x_t) - double(x))));
pause(0.5);
end