21. ImageChops subtract

See: https://pillow.readthedocs.io/en/stable/reference/ImageChops.html#PIL.ImageChops.subtract

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21.1. Subtract

Use the ImageChops.subtract(image1, image2, scale=1.0, offset=0) method subtracts two images, dividing the result by scale and adding the offset.

If omitted, scale defaults to 1.0, and offset to 0.0.

out = ((image1 - image2) / scale + offset)

from PIL import Image, ImageChops


with Image.open("test_images/crosses.png") as im1:
    with Image.open("test_images/circles.png") as im2:
        im_out = ImageChops.subtract(im1, im2, scale=1.0, offset=0)
        im_out.save("chops/subtract.png")