utils/data_convert.py

import base64
from io import BytesIO

# pip3 install pillow
from PIL import Image
import re


def base64_to_image(base64_str):
    base64_data = re.sub('^data:image/.+;base64,', '', base64_str)
    byte_data = base64.b64decode(base64_data)
    image_data = BytesIO(byte_data)
    img = Image.open(image_data)

    return img