Fix color check again

scikit-image · Mar 8, 2015 · 59fbc8d · 59fbc8d
1 parent aa52855
commit 59fbc8d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/skimage/exposure/exposure.py b/skimage/exposure/exposure.py
@@ -501,7 +501,7 @@ def is_low_contrast(image, fraction_threshold=0.05, lower_percentile=1,
     False
     """
     image = np.asanyarray(image)
-    if image.ndim == 3 and image.shape[3] in [3, 4]:
+    if image.ndim == 3 and image.shape[2] in [3, 4]:
         image = rgb2gray(image)
 
     dlimits = dtype_limits(image)