amend #931 and fix #927

nipreps · Jan 18, 2018 · 185ddc9 · 185ddc9
1 parent 4c57c59
commit 185ddc9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fmriprep/interfaces/freesurfer.py b/fmriprep/interfaces/freesurfer.py
@@ -357,7 +357,7 @@ def grow_mask(anat, aseg, ants_segs=None, ww=7, zval=2.0, bw=4):
         ]
         if np.any(window > 0):
             mu = window[window > 0].mean()
-            sigma = min(window[window > 0].std(), 1.e-5)
+            sigma = max(window[window > 0].std(), 1.e-5)
             zstat = abs(anat[tuple(pixel)] - mu) / sigma
             refined[tuple(pixel)] = int(zstat < zval)