if input spacing same as resampling spacing then skip resampling

wasserth · Jan 23, 2024 · 40427de · 40427de
1 parent 9c35040
commit 40427de
Show file tree

Hide file tree

Showing 2 changed files with 5 additions and 0 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,6 +6,7 @@
 * add `--fastest` argument
 * allow `mps` as device (but not working yet)
 * add inline python version requirement for `requests` package
+* if input spacing same as resampling spacing then skip resampling
 
 
 ## Release 2.0.5

diff --git a/totalsegmentator/resampling.py b/totalsegmentator/resampling.py
@@ -171,6 +171,10 @@ def change_spacing(img_in, new_spacing=1.25, target_shape=None, order=0, nr_cpus
     else:
         zoom = img_spacing / new_spacing
 
+    if np.array_equal(img_spacing, new_spacing):
+        # print("Input spacing is equal to new spacing. Return image without resampling.")
+        return img_in
+
     # copy very important; otherwise new_affine changes will also be in old affine
     new_affine = np.copy(img_in.affine)