clear all;
close all;

[I1, lut2]=imread('lena.tif');
figure
image(I1);
colormap('gray');
lut1=colormap;
figure;
plot(lut1);
hold on;
plot(lut2, 'r');
figure(1)
colormap(lut2) %c'est une lutte de requantification

[I2, lut3] = imread('eight.tif');
figure
image(I2);
colormap(lut3);
lut4=1-lut3;


I3 = imread('mire_nb.tif');
figure
imshow(I3);
