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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Wed Feb 21 13:34:32 2018
# quality metrics
@authors: Daniil Kazantsev, Edoardo Pasca
"""
import numpy as np
def nrmse(im1, im2):
rmse = np.sqrt(np.sum((im2 - im1) ** 2) / float(im1.size))
max_val = max(np.max(im1), np.max(im2))
min_val = min(np.min(im1), np.min(im2))
return 1 - (rmse / (max_val - min_val))
def rmse(im1, im2):
rmse = np.sqrt(np.sum((im1 - im2) ** 2) / float(im1.size))
return rmse
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