Pad an image to increase the FOV


mrpad [ options ]  image_in image_out
  • image_in: the image to be padded
  • image_out: the output path for the resulting padded image


  • -uniform number pad the input image by a uniform number of voxels on all sides (in 3D)
  • -axis index lower upper pad the input image along the provided axis (defined by index). Lower and upper define the number of voxels to add to the lower and upper bounds of the axis

Standard options

  • -info display information messages.
  • -quiet do not display information messages or progress status. Alternatively, this can be achieved by setting the MRTRIX_QUIET environment variable to a non-empty string.
  • -debug display debugging messages.
  • -force force overwrite of output files. Caution: Using the same file as input and output might cause unexpected behaviour.
  • -nthreads number use this number of threads in multi-threaded applications (set to 0 to disable multi-threading).
  • -help display this information page and exit.
  • -version display version information and exit.

Author: David Raffelt (

Copyright: Copyright (c) 2008-2018 the MRtrix3 contributors.

This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, you can obtain one at

MRtrix3 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

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