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

# cmtk-probe(1)

Probe image data.

## NAME

probe - Probe image data.

## SYNOPSIS

**probe** InputImage

## DESCRIPTION

This tool prints pixel values or symbolic labels at a list of user-provided image coordinates.

## 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

- **--coordinates**

  Coordinate specification mode. Supported values: "absolute", "indexed", "relative", "physical", where the default is "absolute", or use one of the following:

  - **--absolute**

    Use absolute volume coordinates. For each dimension, the valid range is \[0,FOV\]. **\[This is the default\]**

  - **--indexed**

    Use grid indexes to specify coordinates. For each dimension, the valid value range is \[0,Dims-1\].

  - **--relative**

    Use relative volume coordinates. For each dimension, the valid range is \[0,1\].

  - **--physical**

    Use physical volume coordinates. Each given location is transformed into image coordinates via the inverse of the images's index-to-physical space matrix.

- **--interpolation**

  Image interpolation method. Supported values: "nn", "linear", "cubic", "pv", "sinc-cosine", "sinc-hamming", where the default is "nn", or use one of the following:

  - **--nn**

    Nearest neighbor interpolation **\[This is the default\]**

  - **--linear**

    Trilinear interpolation

  - **--cubic**

    Tricubic interpolation

  - **--pv**

    Partial volume interpolation

  - **--sinc-cosine**

    Sinc interpolation with cosine window

  - **--sinc-hamming**

    Sinc interpolation with Hamming window

- **--sinc-window-radius** *\<integer\>*

  Window radius for Sinc interpolation **\[Default: 3\]**

- **--no-reorient**

  Disable image reorientation into RAS alignment.

## 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.