From cf264353c13112a2cc9e789396b7a8e1f96ef218 Mon Sep 17 00:00:00 2001
From: "Josh Warner (Mac)" <warner.joshua@mayo.edu>
Date: Tue, 9 Apr 2013 19:37:09 -0500
Subject: [PATCH] FIX use specific structuring element in Canny

---
 skimage/filter/_canny.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/skimage/filter/_canny.py b/skimage/filter/_canny.py
index 8be77894..904919be 100644
--- a/skimage/filter/_canny.py
+++ b/skimage/filter/_canny.py
@@ -254,7 +254,8 @@ def canny(image, sigma=1., low_threshold=.1, high_threshold=.2, mask=None):
     # Segment the low-mask, then only keep low-segments that have
     # some high_mask component in them
     #
-    labels, count = label(low_mask, np.ndarray((3, 3), bool))
+    strel = np.ones((3, 3), bool)
+    labels, count = label(low_mask, strel)
     if count == 0:
         return low_mask