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All previous versions (V1, V2, etc.) have been deprecated and revoked. If you hold any earlier version, please cease use and delete it immediately.

🔒 访问与使用规范 / Access & Usage Policy

本数据集欢迎学术研究人员申请使用。为防止违规行为，请注意以下规定：

• 禁止再分发：未经作者书面授权，不得将本数据集（或其任何部分）以任何形式重新分发、上传至其他平台或共享给第三方。
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This dataset is now under a gated / request-based access policy. Please note:

• No Redistribution: Do not redistribute this dataset (in whole or in part) to any other platform or third party without explicit written permission.
• No Derivative Dataset Publication: Do not use this dataset to generate and publicly release new/derivative datasets without the authors' written consent.
• Academic Research Only: This dataset is licensed exclusively for non-commercial academic research under CC BY-NC 4.0.
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🔬 Data Provenance Statement

The publication date, version history, and authorship of this dataset are permanently and immutably recorded via DOI registration and the HuggingFace platform Git commit history. Any disputes regarding data provenance shall be resolved based on these third-party platform records.

如有任何疑问或版权相关事宜，欢迎随时联系沟通。 If you have any questions or concerns (including copyright issues), please feel free to reach out.

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OR-PAM-Reg-4K: A Benchmark Dataset for Bidirectional OR-PAM Registration

How to Request Access

If you need access to this dataset for academic or research purposes, please follow these steps:

1. Go to the Discussions tab of this repository.
2. Open a New Discussion with:
   • Your name and institutional affiliation
   • A brief description of your intended use case
   • Confirmation that you agree to the CC BY-NC 4.0 license terms
3. The maintainers will review your request and provide access instructions.

Dataset Summary

A benchmark dataset for evaluating image registration methods in bidirectional optical-resolution photoacoustic microscopy (OR-PAM). Contains 4,248 paired image samples of in vivo mouse brain vasculature.

Property	Value
Total Samples	4,248
Train / Val / Test	3,396 / 420 / 432
Image Shape	(1, 512, 256)
License	CC BY-NC 4.0
DOI	[10.57967/hf/7721

    ](https://doi.org/10.57967/hf/7721
    
    
    
    
    
    ) |

Citation

@misc{zhang2026orpamreg4k,
  author    = {Zhang, Tianyan and Yan, Chengliu and Lan, Xiangzhi},
  title     = {{OR-PAM-Reg-4K}: A Benchmark Dataset for Bidirectional {OR-PAM} Registration},
  year      = {2026},
  url       = {https://huggingface.co/datasets/chengliuyan/OR-PAM-Reg-4K},
  doi       = {10.57967/hf/7721},
  publisher = {Hugging Face}
}