I1=imread('butterfly.tif');
I2=imread('butterfly_binary.tif');
figure;
imshow(I1);
figure;
imshow(I2);
I116=uint16(I1);
I216=uint16(I2);
J=immultiply(I116,I216);
figure;
imshow(J);
K=double(J);
m=max(max(K));
n=min(min(K));
K=uint8((K-n).*255/(m-n));
figure;
imshow(K);
imwrite(K,'cha2_2_5_2,bmp','bmp');