---
name: "cmtk-overlap"
section: "1"
platform: "linux"
package: "cmtk"
version: "3.3.1p2+dfsg-3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/cmtk-overlap"
---

# cmtk-overlap(1)

Overlap computation

## NAME

overlap - Overlap computation

## SYNOPSIS

overlap \[options\] image0 image1 \[image2 ...\]

## DESCRIPTION

Compute overlap measures between two or more images

## 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.

- **--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).

### Main Options

- **--pad-in** *\<double\>*, **-p** *\<double\>*

  Define padding value for input images **\[Default: disabled\]**

- **--mask** *\<string\>*, **-m** *\<string\>*

  Mask file for optional region-based analysis **\[Default: NONE\]**

- **--num-labels** *\<integer\>*, **-N** *\<integer\>*

  Number of label values \[default: autodetect\] **\[Default: 0\]**

- **--first-label** *\<integer\>*, **-f** *\<integer\>*

  Index of first label value \[default: 0\]; labels below this one are ignored **\[Default: 0\]**

- **--by-label**

  Analysis by label, i.e., separately for each label in given (detected) range

## AUTHORS

Torsten Rohlfing, with contributions from Michael P. Hasak, Greg Jefferis, Calvin R. Maurer, Daniel B. Russakoff, and Yaroslav Halchenko

## LICENSE

http://www.fsf.org/licensing/licenses/gpl.html

## BUGS

Report bugs at http://nitrc.org/projects/cmtk/

## 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.