nlfit_l
non-linear fitting at large/coarse resolution step
nlfit_l <source.mnc> <target.mnc> <input.xfm> <output.xfm> [options]
DESCRIPTION
nlfit_l is a Perl wrapper script for performing non-linear registration using minctracc at a large (coarse) resolution step. It is part of the hierarchical nlfit suite that performs non-linear registration in a coarse-to-fine progression.
The large resolution step uses the widest deformation grid spacing, capturing only broad global shape differences between the source and target volumes. This is typically the first non-linear step run after an initial linear registration, and its output serves as the starting point for the standard (nlfit_s) and fine (nlfit_f) resolution steps.
The script takes a source volume, a target volume, an initial transformation (typically a linear transform), and produces a coarse non-linear transformation.
OPTIONS
Options are passed through to minctracc. Common options include:
-verbose- Print progress information during fitting.
-clobber- Overwrite existing output files.
<source.mnc>- Source MINC volume to be registered.
<target.mnc>- Target MINC volume to register to.
<input.xfm>- Input transformation file (typically a linear registration).
<output.xfm>- Output coarse non-linear transformation file.
EXAMPLES
Run large-resolution non-linear fitting from an initial linear transform:
nlfit_l source.mnc target.mnc linear.xfm nlfit_l_output.xfm
AUTHOR
Vladimir S. Fonov - McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University.
COPYRIGHTS
Copyright © 2009 by Vladimir S. Fonov