---
name: "mia-2dfluid"
section: "1"
platform: "linux"
package: "mia-tools"
version: "2.4.7-11+b1"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/mia-2dfluid"
---

# mia-2dfluid(1)

Fluid dynamic 2D registration

## NAME

mia-2dfluid - Fluid dynamic 2D registration

## SYNOPSIS

**mia-2dfluid -i \<in-image\> -r \<ref-image\> \[options\]**

## DESCRIPTION

**mia-2dfluid** This program is used for non-rigid registration based on fluid dynamics. For reference see

Wollny, G. and Kruggel, F., 'Computational cost of non-rigid registration algorithms  based on fluid dynamics', IEEE Transactions on Medical Imaging, 11(8), pp. 946-952, 2002. ⟨https://doi.org/10.1109/TMI.2002.803113⟩

It uses SSD as the sole registration criterion.

## OPTIONS

### File-IO

- \-i --in-image=(input, required); io

  input (test) image to be registered\
    For supported file types see PLUGINS:2dimage/io

- \-r --ref-image=(input, required); io

  reference image\
    For supported file types see PLUGINS:2dimage/io

- \-o --out-transformation=(output); io

  output transformation comprising the registration\
    For supported file types see PLUGINS:2dvf/io

- \-d --out-image=(output); io

  output image deformed according to the transformation\
    For supported file types see PLUGINS:2dimage/io

### Help & Info

- \-V --verbose=warning

  verbosity of output, print messages of given level and higher priorities. Supported priorities starting at lowest level are:

  *trace* ‐ Function call trace

  *debug* ‐ Debug output

  *info* ‐ Low level messages

  *message* ‐ Normal messages

  *warning* ‐ Warnings

  *fail* ‐ Report test failures

  *error* ‐ Report errors

  *fatal* ‐ Report only fatal errors

- \--copyright

  print copyright information

- \-h --help

  print this help

- \-? --usage

  print a short help

- \--version

  print the version number and exit

### Processing

- \--threads=-1

  Maxiumum number of threads to use for processing,This number should be lower or equal to the number of logical processor cores in the machine. (-1: automatic estimation).

### Registration parameters

- \-m --mgstart=16

  multigrid start size

- \-e --epsilon=0.001

  optimization breaking condition

- \--mu=1

  elasticity parameter

- \--lambda=1

  elasticity parameter

- \--elastic

  use elastic registration

## PLUGINS: 2dimage/io

- **bmp**

  BMP 2D-image input/output support. The plug-in supports reading and writing of binary images and 8-bit gray scale images. read-only support is provided for 4-bit gray scale images. The color table is ignored and the pixel values are taken as literal gray scale values.

Recognized file extensions:  .BMP, .bmp

Supported element types:

binary data, unsigned 8 bit

- **datapool**

  Virtual IO to and from the internal data pool

Recognized file extensions:  .@

- **dicom**

  2D image io for DICOM

Recognized file extensions:  .DCM, .dcm

Supported element types:

signed 16 bit, unsigned 16 bit

- **exr**

  a 2dimage io plugin for OpenEXR images

Recognized file extensions:  .EXR, .exr

Supported element types:

unsigned 32 bit, floating point 32 bit

- **jpg**

  a 2dimage io plugin for jpeg gray scale images

Recognized file extensions:  .JPEG, .JPG, .jpeg, .jpg

Supported element types:

unsigned 8 bit

- **png**

  a 2dimage io plugin for png images

Recognized file extensions:  .PNG, .png

Supported element types:

binary data, unsigned 8 bit, unsigned 16 bit

- **raw**

  RAW 2D-image output support

Recognized file extensions:  .RAW, .raw

Supported element types:

binary data, signed 8 bit, unsigned 8 bit, signed 16 bit, unsigned 16 bit, signed 32 bit, unsigned 32 bit, floating point 32 bit, floating point 64 bit

- **tif**

  TIFF 2D-image input/output support

Recognized file extensions:  .TIF, .TIFF, .tif, .tiff

Supported element types:

binary data, unsigned 8 bit, unsigned 16 bit, unsigned 32 bit

- **vista**

  a 2dimage io plugin for vista images

Recognized file extensions:  .-, .V, .VISTA, .v, .vista

Supported element types:

binary data, signed 8 bit, unsigned 8 bit, signed 16 bit, unsigned 16 bit, signed 32 bit, unsigned 32 bit, floating point 32 bit, floating point 64 bit

## PLUGINS: 2dvf/io

- **datapool**

  Virtual IO to and from the internal data pool

Recognized file extensions:  .@

- **exr**

  a 2dvf io plugin for OpenEXR vfs

Recognized file extensions:  .EXR, .exr

Supported element types:

unsigned 32 bit, floating point 32 bit

- **vista**

  a 2d vector field io plugin for vista

Recognized file extensions:  .V, .VF, .v, .vf

Supported element types:

floating point 32 bit

## EXAMPLE

Register image test.v to image ref.v and write the deformation vector field regfield.v. Start registration at the smallest size above 16 pixel.

mia-2dfluid -i test.v -r ref.v -o regfield.v -s 16

## AUTHOR(s)

Gert Wollny

## COPYRIGHT

This software is Copyright (c) 1999‐2015 Leipzig, Germany and Madrid, Spain. It comes  with  ABSOLUTELY  NO WARRANTY  and  you  may redistribute it under the terms of the GNU  GENERAL PUBLIC LICENSE Version 3 (or later). For more  information run the program with the option '--copyright'.