mask_volume

mask a MINC volume by setting voxels outside a specified mask range

mask_volume input.mnc mask_volume.mnc output.mnc [min] [max] [value_to_set]

DESCRIPTION

mask_volume modifies voxels in the input volume based on a mask volume. A voxel is changed to value_to_set if the corresponding voxel in the mask volume does not have a value between min and max.

By default, min is set so that the mask selects voxels with values greater than zero, max is effectively unbounded, and value_to_set defaults to the volume minimum. This means that by default, voxels where the mask is zero or negative are replaced with the volume minimum.

OPTIONS

min

Minimum mask value for a voxel to be preserved. Default: values > 0 are preserved.

max

Maximum mask value for a voxel to be preserved.

value_to_set

Value assigned to masked-out voxels. Default: volume minimum.

EXAMPLES

Mask a volume using default settings (preserve where mask > 0):

mask_volume brain.mnc mask.mnc output.mnc

Mask with explicit range and replacement value:

mask_volume brain.mnc mask.mnc output.mnc 0.5 1.5 0

SEE ALSO

mincmask, mask_values, mincmath

AUTHOR

David MacDonald - McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University.

COPYRIGHTS

Copyright © 1996 by David MacDonald