# CM-EVS License Matrix

CM-EVS combines redistributable synthetic frames, license-aware adapter scripts, and metadata derived from upstream datasets that have their own access terms. **This release is mixed-license.** Please consult the per-component table below before redistribution or commercial use.

| Component | Source license | CM-EVS release license | Notes |
| --- | --- | --- | --- |
| Blender indoor frames (`blender_indoor/scenes/`) | CC0 / CC-BY 4.0 source assets | **CC-BY 4.0** | Redistributable. Includes RGB, range-depth, pose, and metadata for 374 scene instances / 13,631 frames. |
| HM3D adapter (`adapters/hm3d/`) | code: original; metadata: Matterport / HM3D EULA | **MIT** (code) + upstream EULA (scene ids and any HM3D-derived metadata) | No derived RGB-D frames are redistributed. Users must independently accept HM3D's EULA before running the adapter. |
| ScanNet++ adapter (`adapters/scannetpp/`) | code: original; metadata: ScanNet++ ToS | **MIT** (code) + upstream ToS (scan ids and any ScanNet++-derived metadata) | No derived RGB-D frames are redistributed. Users must accept the ScanNet++ ToS. |
| OB3D adapter (`adapters/ob3d/`) | code: original; metadata: per upstream OB3D | **MIT** (code) + upstream license (any OB3D-derived metadata) | Outdoor re-encoding adapter. No data redistributed. |
| TartanGround adapter (`adapters/tartanground/`) | code: original; metadata: per upstream TartanGround / TartanAir | **MIT** (code) + upstream license (any TartanGround-derived metadata) | Outdoor re-encoding adapter. No data redistributed. |
| Curator source code (`code/`) | original | **MIT** | Includes core modules, scripts, tools, metadata schemas, tiny example. |
| Documentation (`README.md`, `LICENSE.md`, `CHANGELOG.md`, `TODO.md`, `*/README.md`) | original | **CC-BY 4.0** | Datasheet, Croissant metadata, and per-source READMEs. |
| Croissant metadata (`croissant.json`) | original | **CC-BY 4.0** | MLCommons Croissant v1.0; passes mlcroissant 1.1 validator. |

## Important constraints

- **Blender indoor**: CC-BY 4.0 — attribution required if redistributed or used commercially. Cite the dataset paper (see `README.md`).
- **HM3D / ScanNet++ / TartanGround / OB3D**: regenerated frames produced by running the adapters here remain bound by the **upstream license** of each source. The MIT license on the adapter code does **not** override upstream terms for those frames.
- **Synthetic-real gap**: this dataset includes synthetic Blender renders. Synthetic-only results should not be used as evidence for real-scan performance without further validation; see paper §6 limitations.

## Attribution

If you use the Blender indoor data or curator code, please cite:

```bibtex
@inproceedings{cmevs2026,
  title={{CM-EVS}: A Coverage-Curated Panoramic {RGB-D} Dataset for Indoor Scene Understanding},
  author={Anonymous Author(s)},
  booktitle={NeurIPS 2026 Datasets and Benchmarks Track (under review)},
  year={2026}
}
```

For full text of the licenses referenced above, see:
- CC-BY 4.0: <https://creativecommons.org/licenses/by/4.0/legalcode>
- MIT: <https://opensource.org/licenses/MIT>
- HM3D EULA: <https://aihabitat.org/datasets/hm3d/>
- ScanNet++ ToS: <https://kaldir.vc.in.tum.de/scannetpp/>