[Fix] The normalize function was dividing by 0 when min == max

aidge_export_cpp/export_utils.py

@@ -215,6 +215,8 @@ def normalize(array):
     """
     Normalize an input image between -1 and 1
     """
+    if array.max() == array.min():
+        return array/array.max()
     array = (array - array.min()) / (array.max() - array.min())
     return 2 * array - 1