scale.py

from PIL import Image


def add_whitespaces(image, max_size):
    """
    Adds white spaces until the image reaches the desired max_size.
    Forked from: https://gist.github.com/fabeat/6621507
    :param image: Image
    :param max_size: [ W , H ]
    :return: Image
    """
    offset = (((max_size[0] - image.size[0]) / 2), ((max_size[1] - image.size[1]) / 2))
    back = Image.new("RGB", max_size, "white")
    back.paste(image, offset)
    return back