BSD 3-Clause License

Copyright (c) 2025, University of Southampton
All rights reserved.

Redistribution and use in source and binary forms, with or without
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1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

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   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

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   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.

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================================================================================
                         THIRD-PARTY DEPENDENCY NOTICE
================================================================================

This software links against third-party libraries with their own licenses.
When distributing binaries that include these dependencies, you must comply
with their respective license terms:

GPL-LICENSED DEPENDENCIES (copyleft):
-------------------------------------
  * FFTW3 (http://www.fftw.org/) - GPL v2 or later
  * GNU Scientific Library (GSL) - GPL v3

  Binary distributions that link against FFTW3 or GSL must be distributed
  under GPL-compatible terms, unless you:
    - Obtain a commercial license from the FFTW authors, OR
    - Replace these libraries with alternatively-licensed implementations

PERMISSIVELY-LICENSED DEPENDENCIES:
-----------------------------------
  * NumPy - BSD 3-Clause
  * SciPy - BSD 3-Clause
  * OpenCV - Apache 2.0
  * And others (see NOTICE file for complete list)

If you wish to use PIVTools code in a proprietary product without GPL
obligations, you must replace the GPL-licensed dependencies (FFTW3, GSL)
with compatible alternatives.
