# Brain anatomy assets

BodyParts3D, Copyright (c) 2008 Database Center for Life Science (DBCLS),
licensed under Creative Commons Attribution-ShareAlike 2.1 Japan.

- Original dataset: https://lifesciencedb.jp/bp3d/
- Original license notice: https://lifesciencedb.jp/bp3d/info/license/index.html
- License: https://creativecommons.org/licenses/by-sa/2.1/jp/
- GLB conversion: https://github.com/toby-bridges/brain-architecture-studio
- Pinned source commit: 0e01760e2a1ab6f7a0a3c861125802c6d3633f92
- Source folder: public/models/regions/
- Conversion pipeline: BodyParts3D 4.0 OBJ dataset, converted with obj2gltf.

39 FJ*.glb files here are redistributed unchanged from that source.
Six additional surfaces (FJ1793, FJ1794, FJ1837, FJ1838, FJ1839, FJ1840)
were converted from the official OBJ archive with Three.js OBJLoader and
GLTFExporter; their geometry is not otherwise edited. They complete the orbital
gyri and the anterior/posterior superior temporal gyri omitted by the initial
selection.

Version 2 adds 23 more structures from the same official archive, converted by
the same script: FJ1739, FJ1740 (cingulate gyri); FJ1748, FJ1749 (insulae);
FJ1759, FJ1807 (hippocampi); FJ1753, FJ1829 (amygdalae); FJ1782, FJ1827
(thalami); FJ1760, FJ1808 (hypothalami); FJ1754, FJ1802 (caudate nuclei);
FJ1776, FJ1823 (putamina); FJ1757, FJ1805 (globus pallidus); FJ1742 (corpus
callosum); FJ1767, FJ1814, FJ1730, FJ1731 (ventricular spaces). The previously
included cerebral aqueduct, FJ1738, is now grouped with the ventricular system
rather than brainstem tissue. There are 68 GLB files in total.

- Official archive: https://dbarchive.biosciencedbc.jp/data/bodyparts3d/LATEST/isa_BP3D_4.0_obj_99.zip
- Part mapping: https://dbarchive.biosciencedbc.jp/data/bodyparts3d/LATEST/isa_element_parts.txt
- Reproduction script: scripts/prepare-brain-extras.mjs in the website repository.

The viewer applies a rigid coordinate rotation, uniform scaling, and educational
colors and transparency at runtime. The optional exploded view translates
anatomical groups rigidly for visibility; it does not deform the source meshes,
and its separated positions are not anatomically accurate. These are selected cortical and internal
structures, not a complete atlas. Ventricular meshes depict spaces, not tissue.
Anatomical meshes and adaptations of them retain CC BY-SA 2.1 Japan. Rendered
anatomical illustrations, including the preview image, are shared on the same terms.
This asset license does not relicense the surrounding website code or prose.