log_resample

Resample image using log-domain vector field transforms.

log_resample <input> <output.mnc> [options]

DESCRIPTION

log_resample resamples a MINC volume using a log-domain velocity field transform. The velocity field is exponentiated via scaling and squaring to produce the final deformation, and the input image is resampled accordingly. This tool is useful for applying diffeomorphic transformations stored in log-domain form, as produced by log-domain demons registration or the grid_2_log utility.

Interpolation order can be controlled, and the transform can optionally be inverted. For label images, nearest-neighbour interpolation should be used (see --labels).

OPTIONS

--verbose

Print progress information during processing.

--clobber

Overwrite the output file if it already exists.

--like file

Resample the output on the same grid as the specified MINC file.

--transform field

Specify the log-domain velocity field to use as the transform.

--order n

Set the spline interpolation order. Use 0 for nearest-neighbour, 1 for linear, or higher values for cubic and above.

--invert_transform

Invert the transform before applying it.

--labels

Use nearest-neighbour interpolation, appropriate for resampling label volumes.

--byte

Store output voxels as unsigned byte.

--short

Store output voxels as short integer.

--float

Store output voxels as single-precision floating point.

--double

Store output voxels as double-precision floating point.

EXAMPLES

# Resample an image using a log-domain velocity field
log_resample input.mnc output.mnc --transform velocity_field.mnc

# Resample with inversion and a reference grid
log_resample input.mnc output.mnc --transform velocity_field.mnc \
    --like template.mnc --invert_transform

# Resample a label volume
log_resample labels.mnc resampled_labels.mnc --transform velocity_field.mnc \
    --labels --short

AUTHOR

Vladimir S. Fonov - McConnell Brain Imaging Centre, Montreal Neurological Institute.

COPYRIGHTS

Copyright © 2009-2024 by Vladimir S. Fonov

SEE ALSO

itk_resample , grid_proc , grid_2_log