import numpy as np
from skimage.color import rgb2gray
from skimage.exposure import match_histograms
from skimage.metrics import structural_similarity

def find_difference(image1, image2):
    assert image1.shape == image2.shape, 'Especify 2 imagens whit de same shape.'
    gray_image1 = rgb2gray(image1)
    gray_image2 = rgb2gray(image2)
    (score, difference_image) = structural_similarity(gray_image2, gray_image2, full=True)
    print('Similarity of the images: ', score)
    normalized_diferrence_image = (difference_image-np.min(difference_image))/(np.max(difference_image)-np.min(difference_image))
    return normalized_diferrence_image

def transfer_histogram(image1, image2):
    matched_image = match_histograms(image1, image2, multichannel=True)
    return matched_image