How to find out by how many pixels photos differ from each other in python?

Question

Python

I want to compare images. If they do not match, output the number of different pixels.

Answer 1

Images

import base64
from io import BytesIO

from PIL import Image, ImageChops


a_base_64 = 'iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIAAAD91JpzAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DA' \
            'cdvqGQAAAAWSURBVBhXY3BwcGBgYGD8//8/AwMDABgGA7/DZDVsAAAAAElFTkSuQmCC'

b_base_64 = 'iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIAAAD91JpzAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DA' \
            'cdvqGQAAAAVSURBVBhXY/z//z8DAwMTEDMwMAAAJAYDAbrboo8AAAAASUVORK5CYII='


a = Image.open(BytesIO(base64.b64decode(a_base_64)))
b = Image.open(BytesIO(base64.b64decode(b_base_64)))

diff = ImageChops.difference(a, b).convert('L')
print(sum(diff.point(bool).getdata()))

OUT

2

Process finished with exit code 0