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Third-Party Code Attribution

This project uses code from the following open-source projects. All copyright notices are preserved in the source files.

1. Quaternion Operations

File: utils/math/quaternion.py
Source: Facebook Research - VideoPose3D
Repository: https://github.com/facebookresearch/VideoPose3D
License: BSD-3-Clause
Modifications: Adaption for numpy

Copyright notice from file:

Copyright (c) 2018-present, Facebook, Inc. All rights reserved.
This source code is licensed under the license found in the
LICENSE file in the root directory of this source tree.

2. Alibaba WAN Model Components

Files:

  • models/tools/t5.py
  • models/tools/wan_model.py
  • models/tools/wan_model_cross_rope.py
  • models/tools/wan_vae.py
  • models/tools/wan_vae_1d.py
  • models/tools/attention.py
  • models/tools/tokenizers.py

Source: Alibaba Wan Team
Repository: https://github.com/Wan-Video/Wan2.2 License: Apache 2.0
Modifications: Modified for streaming motion generation (causal attention, stream mode, context length handling)

Copyright notice from files:

Copyright 2024-2025 The Alibaba Wan Team Authors. All rights reserved.

Note: t5.py is also based on Hugging Face Transformers (Apache 2.0):

Copyright 2018 Mesh TensorFlow authors, T5 Authors and HuggingFace Inc. team.
Licensed under the Apache License, Version 2.0

3. Text-to-Motion Evaluation Metrics

Files:

  • metrics/tools/t2m_evaluator.py
  • metrics/tools/utils.py
  • metrics/tools/word_vectorizer.py

Source: text-to-motion
Repository: https://github.com/EricGuo5513/text-to-motion
License: MIT
Modifications: Adapted for this project's evaluation pipeline

These files implement standard text-to-motion metrics: R-precision, FID, diversity, and multimodality.

License Compatibility

All third-party licenses are compatible with this project's Apache 2.0 License:

Component License Compatible
Facebook quaternion.py BSD-3-Clause ✓
Alibaba WAN Apache 2.0 ✓
HumanML3D metrics MIT ✓

Legal Notice

  • The Apache 2.0 License of this project applies only to original code by Shanda AI Research Tokyo
  • Third-party code remains under its original license
  • All copyright notices are preserved in source files
  • Modifications to third-party code are documented in file headers

For questions, open an issue in the project repository.