Table 1.

Illustration of edge weights introduced in the graph for voxel pairs

Voxel pairs (i, j)	i ~ j, i ≇ j	i ≁ j, i ≅ j	i ~ j, i ≅ j
(vi → vj), (v̄j → v̄i)	$\frac{1}{2}{c}_{\mathit{ij}}$	0	$\frac{1}{2}{c}_{\mathit{ij}}$
(vj → vi), (v̄i → v̄j)	$\frac{1}{2}{c}_{\mathit{ij}}$	0	$\frac{1}{2}{c}_{\mathit{ij}}$
(v̄j → vi), (v̄i → vj)	0	$\frac{1}{2}\mathrm{\lambda }$	$\frac{1}{2}\mathrm{\lambda }$