diff --git a/core/imagelib/estimate_sharpness.py b/core/imagelib/estimate_sharpness.py
index 8401c91..e4b3e2d 100644
--- a/core/imagelib/estimate_sharpness.py
+++ b/core/imagelib/estimate_sharpness.py
@@ -269,9 +269,10 @@ def get_block_contrast(block):
 
 
 def estimate_sharpness(image):
-    height, width = image.shape[:2]
-
     if image.ndim == 3:
-        image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
-
+        if image.shape[2] > 1:
+            image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
+        else:
+            image = image[...,0]
+        
     return compute(image)
diff --git a/mainscripts/Sorter.py b/mainscripts/Sorter.py
index f04409a..179fc53 100644
--- a/mainscripts/Sorter.py
+++ b/mainscripts/Sorter.py
@@ -33,6 +33,10 @@ class BlurEstimatorSubprocessor(Subprocessor):
                 return [ str(filepath), 0 ]
             else:
                 image = cv2_imread( str(filepath) )
+                
+                face_mask = LandmarksProcessor.get_image_hull_mask (image.shape, dflimg.get_landmarks())
+                image = (image*face_mask).astype(np.uint8)
+            
                 return [ str(filepath), estimate_sharpness(image) ]
 
 
@@ -448,7 +452,8 @@ class FinalLoaderSubprocessor(Subprocessor):
                     source_rect = dflimg.get_source_rect()
                     sharpness = mathlib.polygon_area(np.array(source_rect[[0,2,2,0]]).astype(np.float32), np.array(source_rect[[1,1,3,3]]).astype(np.float32))
                 else:
-                    sharpness = estimate_sharpness(gray)
+                    face_mask = LandmarksProcessor.get_image_hull_mask (gray.shape, dflimg.get_landmarks())                
+                    sharpness = estimate_sharpness( (gray*face_mask).astype(np.uint8) )
 
                 pitch, yaw, roll = LandmarksProcessor.estimate_pitch_yaw_roll ( dflimg.get_landmarks(), size=dflimg.get_shape()[1] )