.TH levelset "1" "Jan 25 2019" "CMTK 3.3.1p1" "The Computational Morphometry Toolkit"
.SH NAME
levelset \- Levelset segmentation
.SH SYNOPSIS
\fBlevelset\fR InputImage OutputImage 
.SH DESCRIPTION
Levelset-type segmentation of foreground/background using minimum regional variance energy
.SH OPTIONS
.SS Global Toolkit Options (these are shared by all CMTK tools)
.TP 5
\fB\-\-help\fR
Write list of basic command line options to standard output.
.TP 5
\fB\-\-help-all\fR
Write complete list of basic and advanced command line options to standard output.
.TP 5
\fB\-\-wiki\fR
Write list of command line options to standard output in MediaWiki markup.
.TP 5
\fB\-\-man\fR
Write man page source in 'nroff' markup to standard output.
.TP 5
\fB\-\-xml\fR
Write command line syntax specification in XML markup (for Slicer integration).
.TP 5
\fB\-\-version\fR
Write toolkit version to standard output.
.TP 5
\fB\-\-echo\fR
Write the current command line to standard output.
.TP 5
\fB\-\-verbose-level\fR \fI<integer>\fR
Set verbosity level.
.TP 5
\fB\-\-verbose\fR, \fB\-v\fR
Increment verbosity level by 1 (deprecated; supported for backward compatibility).
.TP 5
\fB\-\-threads\fR \fI<integer>\fR
Set maximum number of parallel threads (for POSIX threads and OpenMP).
.SS Main Options
.TP 5
\fB\-\-binarize\fR, \fB\-b\fR
Binarize levelset and write as byte mask, rather than write floating-point levelset function itself.
.SS These parameters control the initialization of the levelset function
.TP 5
\fB\-\-scale-initial-sphere\fR \fI<double>\fR
Scale factor to reduce or increase the size of the initial foreground region sphere.
.B [Default: 1]
.SS These parameters control the evolution of the levelset function
.TP 5
\fB\-\-iterations\fR \fI<integer>\fR, \fB\-n\fR \fI<integer>\fR
Maximum number of iterations
.B [Default: 100]
.TP 5
\fB\-\-force-iterations\fR, \fB\-f\fR
Force given number of iterations, even when convergence has been detected
.TP 5
\fB\-\-filter-sigma\fR \fI<double>\fR, \fB\-s\fR \fI<double>\fR
Gaussian filter sigma in world coordinate units (e.g., mm)
.B [Default: 2]
.TP 5
\fB\-\-delta\fR \fI<double>\fR, \fB\-d\fR \fI<double>\fR
Time constant for levelset evolution; must be > 0; larger is faster
.B [Default: 0.1]
.TP 5
\fB\-\-levelset-threshold\fR \fI<double>\fR, \fB\-t\fR \fI<double>\fR
Levelset threshold: levelset function is truncated at +/- this value
.B [Default: 1]
.SS Image/Transformation Database
.TP 5
\fB\-\-db\fR \fI<string>\fR
Path to image/transformation database that should be updated with the newly created image.
.B [Default: NONE]
.SH AUTHORS
Torsten Rohlfing, with contributions from Michael P. Hasak, Greg Jefferis, Calvin R. Maurer, Daniel B. Russakoff, and Yaroslav Halchenko
.SH LICENSE
http://www.fsf.org/licensing/licenses/gpl.html
.SH BUGS
Report bugs at http://nitrc.org/projects/cmtk/
.SH ACKNOWLEDGMENTS
CMTK is developed with support from the NIAAA under Grant AA021697, National Consortium on Alcohol and Neurodevelopment in Adolescence (N-CANDA): Data Integration Component. From April 2009 through September 2011, CMTK development and maintenance was supported by the NIBIB under Grant EB008381.