return nan in surface metrics for empty labels

pyplati · Feb 1, 2022 · a32080b · a32080b
1 parent 0b5eba7
commit a32080b
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/platipy/imaging/label/comparison.py b/platipy/imaging/label/comparison.py
@@ -237,7 +237,7 @@ def compute_metric_masd(label_a, label_b, auto_crop=True):
         sitk.GetArrayViewFromImage(label_a).sum() == 0
         or sitk.GetArrayViewFromImage(label_b).sum() == 0
     ):
-        return -1
+        return np.nan
 
     if auto_crop:
         largest_region = (label_a + label_b) > 0
@@ -278,7 +278,7 @@ def compute_metric_hd(label_a, label_b, auto_crop=True):
         sitk.GetArrayViewFromImage(label_a).sum() == 0
         or sitk.GetArrayViewFromImage(label_b).sum() == 0
     ):
-        return -1
+        return np.nan
     if auto_crop:
         largest_region = (label_a + label_b) > 0
         crop_box_size, crop_box_index = label_to_roi(largest_region)