From c42b3d656dc31f86338d3066c49be276730d06ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Johannes=20Sch=C3=B6nberger?= <hannesschoenberger@gmail.com>
Date: Fri, 7 Sep 2012 18:11:48 +0200
Subject: [PATCH] Fix wrong factor in pyramid_expand

---
 skimage/transform/pyramids.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/skimage/transform/pyramids.py b/skimage/transform/pyramids.py
index 5c0a7905..e5507460 100644
--- a/skimage/transform/pyramids.py
+++ b/skimage/transform/pyramids.py
@@ -121,8 +121,8 @@ def pyramid_expand(image, factor=2, sigma=None, order=1,
 
     rows = image.shape[0]
     cols = image.shape[1]
-    out_rows = 2 * rows
-    out_cols = 2 * cols
+    out_rows = math.ceil(factor * rows)
+    out_cols = math.ceil(factor * cols)
 
     if sigma is None:
         # automatically determine sigma which covers > 99% of distribution