close all
clear
clc
disp('====E4_3_14.m====');

X=uint8([0  0  1  1
         0  0  2  3])
Y=uint8([0  1  0  1
         0  2  0  3])
Z=X&Y

I1=imread('A.bmp');
I2=imread('B.bmp');
I3=im2bw(I1);
I4=im2bw(I2);
I5=I3&I4;    % Óï¾ä1

subplot(1,3,1),imshow(I3),xlabel('(a)A');
subplot(1,3,2),imshow(I4),xlabel('(b)B');
subplot(1,3,3),imshow(I5),xlabel('(c)A AND B');