Table 2.

3D histogram-of-oriented-gradients (3DHOG) and feature dimensionality for ${20}^3$, ${30}^3$, ${40}^3$ voxel grids.

Voxel Grid	${20}^3$	${30}^3$	${40}^3$
$N_{Blocks}$	1	8	27
$N_{Cells}$	8	8	8
$N_{Features}$	1296	10,368	34,992