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LICENSE.md

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SOFTWARE DISCLAIMER / RELEASE

This software was developed by employees of the National Telecommunications and Information Administration (NTIA), an agency of the Federal Government and is provided to you as a public service. Pursuant to Title 15 United States Code Section 105, works of NTIA employees are not subject to copyright protection within the United States.

The software is provided by NTIA “AS IS.” NTIA MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT AND DATA ACCURACY. NTIA does not warrant or make any representations regarding the use of the software or the results thereof, including but not limited to the correctness, accuracy, reliability or usefulness of the software.

To the extent that NTIA holds rights in countries other than the United States, you are hereby granted the non-exclusive irrevocable and unconditional right to print, publish, prepare derivative works and distribute the NTIA software, in any medium, or authorize others to do so on your behalf, on a royalty-free basis throughout the World.

You may improve, modify, and create derivative works of the software or any portion of the software, and you may copy and distribute such modifications or works. Modified works should carry a notice stating that you changed the software and should note the date and nature of any such change.

You are solely responsible for determining the appropriateness of using and distributing the software and you assume all risks associated with its use, including but not limited to the risks and costs of program errors, compliance with applicable laws, damage to or loss of data, programs or equipment, and the unavailability or interruption of operation. This software is not intended to be used in any situation where a failure could cause risk of injury or damage to property.

Please provide appropriate acknowledgments of NTIA’s creation of the software in any copies or derivative works of this software.

The algorithms contained within this software were previously covered by two (now expired) U.S. Patents:

  • U.S. Patent Number 5,446,492, entitled "A Perception-based Video Quality Measurement System," issued on August 29, 1995 (expired January 19, 2013).

  • U.S. Patent Number 6,496,221, entitled "In-Service Video Quality Measurement System Utilizing an Arbitrary Bandwidth Ancillary Data Channel," issued December 17, 2002 (expired November 1, 2019).