# IMPACT v1.1 Data Release

IMPACT is a synchronized five-view RGB-D dataset and benchmark for multi-granularity human procedural action understanding in industrial assembly. The release contains 112 trials from 13 participants and 39.5 video hours across one egocentric and four exocentric views.

- Project page: https://kratos-wen.github.io/IMPACT/
- Benchmark code: https://github.com/Kratos-Wen/IMPACT
- Hugging Face mirror: https://huggingface.co/datasets/KratosWen/IMPACT

## Release Update

In v1.1, all 560 TAS-B annotation files were revalidated and 117 of 560 RGB videos (20.9%) were updated. See `CHANGELOG.md` for the complete revision record.

## Archives

The release provides independent archives for annotations, RGB videos, depth streams, ego audio, eye tracking, and I3D, MViTv2, and VideoMAEv2 features. Every ZIP extracts into the same `IMPACT-v1.1/` root.

The quick-start sample is available at `sample/IMPACT-v1.1-sample.zip` and contains three complete executions with synchronized media, all released feature types, and corresponding task annotations.

Exact archive sizes are recorded in `MANIFEST.tsv`; SHA-256 checksums are recorded in `SHA256SUMS`; verification scope is recorded in `VERIFICATION.tsv`.

## Selective Download

The benchmark repository provides a Hugging Face downloader with automatic checksum verification:

```bash
git clone https://github.com/Kratos-Wen/IMPACT.git
cd IMPACT
python -m pip install -r requirements-tools.txt
python tools/download_impact.py --include sample --output downloads
python tools/verify_release.py downloads/v1.1/sample/IMPACT-v1.1-sample.zip
```

## License

Dataset assets and release documentation are licensed under CC BY-NC-SA 4.0. See `LICENSE-DATA` for scope and attribution guidance.