Features

SurfArea

Estimated as a number of boundary voxel faces as surface area.

Volume

Note: Biomass

Convex_volume

Solidity

Volume ÷ Convex_volume

MedR

Median number of roots among all horizontal slices. (I.e., the number of connected components per slice)

MaxR

Max number of roots among all horizontal slices

Bushiness

MaxR ÷ MedR

Depth

HorEqDiameter(Max Network Width)

Max horizontal distance = equivalent diameter of the convex hull

TotalLength

Root length is approximated by the number of voxels in the skeleton

SRL

TotalLength ÷ Volume

Length_Distr

Length Distribution root feature. It is defined as the ratio of root length in the upper ⅓ of the volume to the root length in the lower ⅔ of the volume.

W_D_ratio

HorEqDiameter ÷ Depth

Number_bif_cl

Number of bifurcation clusters

Av_size_bif_cl

Average size of the bifurcation clusters

Edge_num

Number of skeleton edges

Av_Edge_length

Average length of skeleton clusters

number_tips

volume

surface_area

av_radius