The following files are from different authors and have their own licenses

nifti.h, nifti1_io.h/nifti1_io_core.cpp is public domain
  http://niftilib.sourceforge.net
  http://sourceforge.net/projects/niftilib/files/latest/download
ujpeg.h/ujpeg.cpp uses the MIT license (see file for license text)
  http://keyj.emphy.de/nanojpeg/
miniz.c is optional, it is public domain (http://unlicense.org)
 https://github.com/richgel999/miniz
OpenJpeg is optional, it uses a BSD license
 https://github.com/uclouvain/openjpeg/blob/master/LICENSE
CharLS is optional, it uses a BSD license
 https://github.com/team-charls/charls/blob/master/LICENSE.md
zlib is optional and includes a simple license
 https://www.zlib.net/zlib_license.html
Jasper is optional and provides its own license
 https://github.com/mdadams/jasper/blob/master/LICENSE

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The Software has been developed for research purposes only and is not a clinical tool
Copyright (c) 2014-2021 Chris Rorden. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright owner nor the name of this project
   (dcm2niix) may be used to endorse or promote products derived from this
   software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT OWNER ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
