Workbench Command is a set of command-line tools that can be used to perform simple and complex operations within Connectome Workbench.
ERODE A VOLUME FILE
wb_command -volume-erode
<volume> - the volume to erode
<distance> - distance in mm to erode
<volume-out> - output - the output volume
[-roi] - assume voxels outside this roi are nonzero
<roi-volume> - volume file, positive values denote voxels that have
data
[-subvolume] - select a single subvolume to dilate
<subvol> - the subvolume number or name
Around each voxel with a value of zero, set surrounding voxels to zero.
The surrounding voxels are all face neighbors and all voxels within the
specified distance (center to center).