Small changes made to g_stabilize.m

src/g_stabilize/g_stabilize.m

@@ -111,6 +111,8 @@ im2 = imread(img_ref_fname);
 % Convert into gray scale if not already a B/W image
 if size(im2,3) ~= 1
     im2_BW = g_rgb2gray(im2);
+else
+    im2_BW = im2;
 end
 
 im2_BW_cooked = im2_BW;
@@ -140,7 +142,6 @@ end
 
 frames(2).im = im2_BW_cooked;
 
-
 %% Some figures to make sure everything is ok
 figure(1);
 imagesc(im2_BW);
@@ -219,6 +220,8 @@ for i = 1:N
     % Convert into gray scale if not already a B/W image
     if size(im1,3) ~= 1
         im1_BW = g_rgb2gray(im1);
+    else
+        im1_BW = im1;
     end
     
     im1_BW_cooked = im1_BW;