Difference Between 2 image and exctrat difference

i have a projet and i want to get the difference between 2 images and extract the difference in other windows plzz

Answer 1

[Walter Roberson]

difference_image = double(firstImage) - double(SecondImage);

[Image Analyst]

figure; % Open up another figure window.
imshow(difference_image, []); % Display the difference image.