2.4.3 Line Filters [3]

Here is the same example tuned for width 3 lines:
-3222-3
-3222-3
-3222-3
-3222-3
-3222-3
-3-3-3-3-3
22222
22222
22222
-3-3-3-3-3
-3-2-222
-2-2222
-2222-2
222-2-2
22-2-2-3
22-2-2-3
222-2-2
-2222-2
-2-2222
-3-2-222



Original
To be less directional,
here is the average
of the above 4 images

Thresholded