pyxelsum.py

import hashlib

from wand.image import Image as wand_image
from PIL import Image as pillow_image


# Generate raw-pixels checksums to identify identical images
# ignoring different [JPG] metadata or [PNG] compression
# levels (i.e. binary different).

# Due to the different libraries, these two methods will not
# generate the same checksum for the same file!


def hash_image_wand(filename):
    with wand_image(filename=filename) as img:
        print(hashlib.sha256(img.make_blob('RGBA')).hexdigest())


def hash_image_pillow(filename):
    with pillow_image.open(filename) as img:
        print(hashlib.sha256(img.tobytes()).hexdigest())