Chamfer Mask:
( 1,  0,  0,   3)
( 1,  1,  0,   4)
( 1,  1,  1,   5)
( 2,  1,  1,   7)

Computed Lut Mask:
( 1,  0,  0,   3)
( 1,  1,  0,   4)
( 1,  1,  1,   5)
( 2,  1,  1,   7)

Look-Up Table: values which differ from LMC (L = 200, R <= 593)
Lut[][    3 ] =     4     5     6     8 
Lut[][    4 ] =                 8       
Lut[][    6 ] =     8                   
Lut[][    7 ] =                11