From 3c14b965d63789edc75f7c33a48913474c08f82a Mon Sep 17 00:00:00 2001
From: Stefan van der Walt <stefan@sun.ac.za>
Date: Tue, 8 Jun 2010 20:06:41 -0600
Subject: [PATCH] Allow PIL plugin to read grey-level images with alpha layer.

---
 scikits/image/io/_plugins/pil_plugin.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/scikits/image/io/_plugins/pil_plugin.py b/scikits/image/io/_plugins/pil_plugin.py
index a36b0257..5b87b34b 100644
--- a/scikits/image/io/_plugins/pil_plugin.py
+++ b/scikits/image/io/_plugins/pil_plugin.py
@@ -21,9 +21,12 @@ def imread(fname, as_grey=False, dtype=None):
             im = im.convert('RGB')
 
     if as_grey and not \
-           im.mode in ('1', 'L', 'I', 'F', 'I;16', 'I;16L', 'I;16B'):
+           im.mode in ('1', 'L', 'I', 'F', 'I;16', 'I;16L', 'I;16B', 'LA'):
         im = im.convert('F')
 
+    if 'A' in im.mode:
+        im = im.convert('RGBA')
+
     return np.array(im, dtype=dtype)
 
 def _palette_is_grayscale(pil_image):