Chamfer Mask:
( 1,  0,   5)
( 1,  1,   7)
( 2,  1,  11)

Computed Lut Mask:
( 1,  0,   5)
( 1,  1,   7)
( 2,  1,  11)

Look-Up Table: values which differ from LMC (L = 500, R <= 2489)
Lut[][    5 ] =     6     8    12 
Lut[][    7 ] =    11    12    17 
Lut[][   10 ] =    12    15    19 
Lut[][   11 ] =          17       
Lut[][   14 ] =    17    19    23 
Lut[][   15 ] =    19             
Lut[][   16 ] =          22       
Lut[][   18 ] =    22    23    28 
Lut[][   20 ] =    23    26    30 
Lut[][   21 ] =          27       
Lut[][   25 ] =    28    30    34 
Lut[][   27 ] =          33       
Lut[][   28 ] =          34       
Lut[][   29 ] =    33             
Lut[][   30 ] =    34             
Lut[][   31 ] =          37       
Lut[][   32 ] =          38       
Lut[][   35 ] =    39    41    45 
Lut[][   38 ] =          44       
Lut[][   39 ] =          45       
Lut[][   40 ] =    44             
Lut[][   42 ] =          48       
Lut[][   46 ] =          52       
Lut[][   49 ] =          55       
Lut[][   53 ] =          59       
Lut[][   60 ] =          66