symplx(1) The Computational Morphometry Toolkit symplx(1)
NAME
symplx - Symmetry plane computation
SYNOPSIS
symplx InputImage
DESCRIPTION
Compute the approximate symmetry plane of an image to determine, for example, the mid-sagittal plane in human brain images. Various forms
of output are supported, e.g., writing the input image with the symmetry plane drawn into it, or the input image realigned along the symme-
try plane.
OPTIONS
Global Toolkit Options (these are shared by all CMTK tools)
--help
Write list of basic command line options to standard output.
--help-all
Write complete list of basic and advanced command line options to standard output.
--wiki
Write list of command line options to standard output in MediaWiki markup.
--man
Write man page source in 'nroff' markup to standard output.
--xml
Write command line syntax specification in XML markup (for Slicer integration).
--version
Write toolkit version to standard output.
--echo
Write the current command line to standard output.
--verbose-level <integer>
Set verbosity level.
--verbose, -v
Increment verbosity level by 1 (deprecated; supported for backward compatibility).
--threads <integer>
Set maximum number of parallel threads (for POSIX threads and OpenMP).
Optimization
--accuracy <double>, -a <double>
Accuracy (final optimization step size in [mm]. [Default: 0.1]
--sampling <double>, -s <double>
Resampled image resolution. This is the resolution [in mm] of the first (finest) resampled image in the multi-scale pyramid, which is
derived directly from the original full-resolution images. [Default: 1]
--levels <integer>, -l <integer>
Number of resolution levels. The algorithm will create (levels-1) resampled images with increasingly coarse resolution and use these
in successive order of increasing resolution before using the original images at the final level. [Default: 4]
--fix-offset
Fix symmetry plane offset. Reduces computation time and forces symmetry plane to cross center of mass, but may lead to less-than-accu-
rate result.
Initial approximate symmetry plane orientation
--initial-plane
Initial orientation of symmetry plane. This should be the closest orthogonal plane to the expected actual symmetry plane. Supported
values: "initial-axial", "initial-coronal", "initial-sagittal", "initial-xy", "initial-xz", "initial-yz", where the default is "ini-
tial-sagittal", or use one of the following:
--initial-axial
Approximately axial symmetry
--initial-coronal
Approximately coronal symmetry
--initial-sagittal
Approximately sagittal symmetry [This is the default]
--initial-xy
Approximately XY plane symmetry
--initial-xz
Approximately XZ plane symmetry
--initial-yz
Approximately YZ plane symmetry [This is the default]
Pre-computed symmetry
--output-only <string>
Give symmetry parameters [Rho Theta Phi] as option, skip search. [Default: disabled]
--output-only-file <string>
Read symmetry parameters from file, skip search. [Default: disabled]
Data pre-processing
--min-value <float>
Force minumum data value. [Default: disabled]
--max-value <float>
Force maximum data value. [Default: disabled]
Output of Images
--interpolation
Interpolation method used for reformatted output data Supported values: "linear", "cubic", "sinc", where the default is "linear", or
use one of the following:
--linear, -L
Use linear image interpolation for output. [This is the default]
--cubic, -C
Use cubic image interpolation for output.
--sinc, -S
Use cosine-windowed sinc image interpolation for output.
--pad-out <double>, -P <double>
Padding value for output images. [Default: disabled]
--mark-value <double>
Data value to mark (draw) symmetry plane. [Default: 4095]
--write-marked <image-path>
File name for output image with marked symmetry plane. [Default: NONE]
--write-aligned <image-path>
File name for symmetry plane-aligned output image. [Default: NONE]
--mark-aligned
Mark symmetry plane in aligned output image.
--write-subtract <image-path>
File name for mirror subtraction image. [Default: NONE]
--write-mirror <image-path>
File name for image mirrored w.r.t. symmetry plane. [Default: NONE]
Output of Parameters
--outfile <path>, -o <path>
File name for symmetry plane parameter output. [Default: NONE]
--write-xform <transformation-path>
Write affine alignment transformation to file [Default: NONE]
AUTHORS
Torsten Rohlfing, with contributions from Michael P. Hasak, Greg Jefferis, Calvin R. Maurer, and Daniel B. Russakoff
LICENSE
http://www.fsf.org/licensing/licenses/gpl.html
BUGS
Report bugs at http://nitrc.org/projects/cmtk/
ACKNOWLEDGMENTS
From April 2009 through September 2011, CMTK Development and Maintenance was supported by the National Institute of Biomedical Imaging and
Bioengineering under Grant No.R01 EB008381 (PI: Torsten Rohlfing).
CMTK 2.2.2 Jul 20 2012 symplx(1)