diff --git a/fourcell/apply_image.py b/fourcell/apply_image.py
index 3c389bc..0935635 100644
--- a/fourcell/apply_image.py
+++ b/fourcell/apply_image.py
@@ -116,6 +116,8 @@ dst = cv2.warpAffine(target, M, (cols, rows),
 	borderMode = cv2.BORDER_CONSTANT, 
 	borderValue = [0, 0, 0, 0])
 
+#mask = cv2.inRange(dst, [0, 0, 0, 0], [0, 0, 0, 0])
+
 output[0:rows, 0:cols] = dst
 
 display(output)