# Atlas asset licensing

The MIT License in `LICENSE` applies to Vanatome viewer software and repository
documentation authored for Vanatome. It does not relicense third-party or
adapted anatomy assets.

The `.glb` atlas files and associated manifest under `public/models/` are
browser-oriented adaptations of material from:

- **Z-Anatomy — The libre 3D atlas of anatomy**
- Primary creators credited by the project: Gauthier Kervyn (design, 3D,
  anatomy) and Marcin Zielinski (Python script)
- Additional contributors and upstream sources are documented by Z-Anatomy
- Source: <https://github.com/Z-Anatomy/Models>
- License: [Creative Commons Attribution-ShareAlike 4.0 International][cc]

Z-Anatomy also documents material derived from BodyParts3D, which has its own
attribution and source history. See
<https://dbarchive.biosciencedbc.jp/en/bodyparts3d/download.html> and the
Z-Anatomy repository for those notices.

Vanatome’s adaptations include web export, structure selection identifiers,
material adjustments, curve-to-mesh conversion, and geometry optimization.
When redistributing the adapted atlas material, preserve the relevant
attribution, identify modifications, include a link to the license, and follow
the applicable ShareAlike terms. This summary is provided to make provenance
visible; the linked license and upstream notices are authoritative.

[cc]: https://creativecommons.org/licenses/by-sa/4.0/

## Medi.kharousi modifications (2026-10-07, release 2k.6)

Made on top of the Vanatome adaptation, for the stomach, liver and urinary bladder only:

- **Stomach:** closed a 49 mm round hole in the anterior wall (an export/simplification defect; the real wall is
  continuous) with a smooth patch, then smoothed the surface (Taubin, rims of the cardia and pylorus openings kept in
  place; mean change 0.2 mm, max 1.3 mm). The two natural openings were kept.
- **Urinary bladder:** one Loop subdivision + Taubin smoothing to remove faceting (mean change 0.03 mm, max 2.4 mm,
  volume −0.3 %).
- **Liver:** geometry unchanged.
- **All three:** baked ambient occlusion from each organ's own shape, stored as vertex colour (COLOR_0), and natural base
  colours/roughness in their glTF materials.
- No anatomical structures were added. The rest of `atlas.glb` is unchanged.
- Script: `organs/rebuild_glb.py` in the Medi.kharousi source backup.

These modified assets remain under CC BY-SA 4.0.