---
name: "mincblob"
section: "1"
platform: "linux"
package: "minc-tools"
version: "2.3.00+dfsg-12"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/mincblob"
---

# mincblob(1)

calculate blobs from minc deformation grids

## NAME

mincblob - calculate blobs from minc deformation grids

## SYNOPSIS

**mincblob** \[\<options\>\] \<in1\>.mnc

## DESCRIPTION

*mincblob* will calculate simple statistical metrics of a minc deformation grid file related to local volume change. The input deformation grid files are typically produced by minctracc.

There are currently 4 deformation grid metrics to choose from: trace,  determinant, translation and magnitude. The first two relate to different  estimates of local volume change the third is a measure of how consistent  movement is in a direction but without a local change in volume. The last  calcuates the magnitude of the local deformation vector. These metrics are all  calculated with respect to a vectors immediate neighbours. No smoothing of the  field is performed as part of this calculation so if a smooth results is desired input grid files should be first smoothed or blurred.

## OPTIONS

Note that options can be specified in abbreviated form (as long as they are unique) and can be given anywhere on the command line.

## General options

- **-clobber**

  Overwrite an existing file.

- **-noclobber**

  Don't overwrite an existing file (default).

- **-verbose**

  Print out extra information (more than the default).

  **-trace** Compute the areas within the deformation field that equate to volume increase or decrease (+ve or -ve dilation) Dilation is defined as the trace of the deformation field Thus it should range between -1..1 with -1 being compression and 1 being dilation. This measure while fast is essentially a sum of partial derivatives in all three directions.

- **-determinant**

  This computes the same metric as -trace but with greater accuracy as the local Jacobian matrix is first estimated. The first order determinant of the Jacobian is then returned.

- **-translation**

  Compute the areas within the deformation field that equate to translation Translation is defined as: trans = arccos( A.B / \|A\|.\|B\| ) \* e^- (\|A\|-\|B\|) Thus it should range between 0..1 with 1 being "translation".

- **-magnitude**

  Compute the magnitude of the local deformation vector.

## Generic options for all commands:

- **-help**

  Print summary of command-line options and exit.

- **-version**

  Print the program's version number and exit.

## AUTHOR

Andrew Janke

## COPYRIGHTS

Program: Copyright © 2000 by Andrew Janke

Man page: Copyright © 2001 by Peter Neelin