allietran/LSC26

Dataset Card for Lifelog Search Challenge (LSC)

This is a private, large-scale multimodal lifelogging dataset. It contains approximately 1.75 million images captured over 4 years (1,200 images/day) via a wearable camera. This version of the dataset stores images in their raw format for direct access and integration with the Hugging Face ecosystem.

Dataset Structure

The images are bundled into monthly AES-256 encrypted archives to ensure privacy while maintaining a manageable file count on the Hub.

.
├── metadata.json.bz2    # Centralized metadata (Bzip2 compressed)
├── .gitattributes       # LFS tracking for zips and metadata
├── 2019/                # Yearly folders
│   └── 2019-01.zip      # Monthly archive (Encrypted)
│   └── 2019-02.zip
│   └── ...
├── 2020/
└── README.md

After unzipping it should look like this:

.
├── metadata.json        # Centralized metadata for all images
├── .gitattributes       
├── 2019/                # Yearly folders
│   └── 01/              # Monthly folders
│       └── 01/          # Daily folders
│           └── YYYYMMDD_HHMMSS.webp
├── 2020/
├── 2021/
└── 2022/

Data Synchronization & Integrity

Metadata as the Source of Truth: The metadata.json.bz2 file serves as the definitive file list for the dataset.

Forced Updates: This dataset is actively maintained. If an image is removed from the source database for privacy or curation reasons, it will be removed from the next sync.

Cleanup Requirement: If you have previously downloaded or extracted the data, you must synchronize your local files with the current metadata.json. Any local images not present in the latest metadata file should be considered deleted and must be removed from your local storage to remain compliant with the dataset's privacy policy.

Access & Licensing

How to Request Access

This dataset contains sensitive personal data and is not public. To request access, please follow these steps:

1. Official Website: Visit the LSC Data Page to review the data usage agreements.
2. Hugging Face Request: Click the "Request Access" button on this Hugging Face repository.
3. Formal Application: Send an email to [Your Email/Contact] with the subject LSC Dataset Access Request - [Your Institution]. You must provide:
   • Your name and institutional affiliation.
   • A brief description of your research purpose.
   • A signed copy of the Data Use Agreement (available on the website).

License

This dataset is provided under a Custom Research License.

• Permitted Use: Strictly for non-commercial academic research and participation in the Lifelog Search Challenge (LSC).
• Prohibitions: You may not redistribute the raw images, use the data for commercial purposes, or attempt to de-anonymize individuals captured in the images.
• Attribution: Any publication using this data must cite the official LSC papers.