7. ImageChops darker

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

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7.1. Darker

Use the ImageChops.darker(image1, image2) to compare the two images, pixel by pixel, and returns a new image containing the darker values.

out = min(image1, image2)

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.darker(im1, im2)
        im_out.save("chops/darker.png")