close all
clear
clc
disp('====E4_3_15.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;

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 OR B');