1 files changed, 18 insertions, 0 deletions
diff --git a/demos/qualitymetrics.py b/demos/qualitymetrics.py
new file mode 100644
index 0000000..850829e
--- /dev/null
+++ b/demos/qualitymetrics.py
@@ -0,0 +1,18 @@
+#!/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