# Human anatomy in OptoGuide

BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International.

- Dataset: https://dbarchive.biosciencedbc.jp/en/bodyparts3d/download.html
- Current licence statement: https://dbarchive.biosciencedbc.jp/en/bodyparts3d/lic.html
- Licence: https://creativecommons.org/licenses/by/4.0/
- Human Atlas by ashemag: https://github.com/ashemag/human-atlas/tree/1c38bf35c254a891200d3cedecfd57abebe83d8d
- Original code: MIT; full notice in HUMAN-ATLAS-LICENSE.txt.
- Upstream adaptations and publication: UPSTREAM-ATTRIBUTION.md.

OptoGuide preserves all 2,234 meshes and 3,432 concepts, with unchanged geometry buffers.
We adapted the interface, asset paths, camera handling and links into ocular teaching models. Runtime display-system corrections classify brain ventricles/choroid plexus as nervous, wrist flexor retinacula as connective tissue and lacrimal bones as skeletal; the original anatomical records and geometry remain unchanged.
This is an adult male reference with incomplete coverage of anatomical variation.
Attribution does not imply endorsement or independent clinical validation.
The dataset remains available under CC BY 4.0 independently of OptoGuide's application terms.

2026-09-28: OptoGuide added an original study workspace with dedicated model, system and inspection areas, body/neural/ocular study starting points, and direct Study hub collection links. Camera framing was adapted to the unobstructed stage. These interface changes do not alter the credited source geometry or imply endorsement by the original authors.

2026-09-28: Brain teaching adaptation expands the runtime Brain selection from 59 to 85 existing meshes, including omitted deep structures, white matter, CSF connections and visual landmarks. Seven OptoGuide study views and a labelled teaching-colour palette expose these structures; source asset records, names, identifiers and geometry buffers remain unchanged. Structure notes and evidence links are original OptoGuide additions, with clinical review pending.

2026-09-28: Whole-body teaching pass adds 57 sourced notes, 24 organ views, grouped part selection and explicit geometry limits. Runtime system corrections now total 54 (43 additional muscle, connective-tissue, oral, nasal and liver-tissue entries). The heart selection also includes its supplied ventricular wall. Heart cavity/valve colours are labelled teaching colours, not oxygenation. All source meshes and identifiers remain unchanged.

2026-09-28: Small-structure teaching adds 48 further original notes (105 body notes total) and six hand views (30 views total). Runtime hand selections restore eight existing carpals per side, without altering source geometry. Dated editorial source checks are distinct from independent clinical certification; detailed limits remain visible.

2026-09-29: OptoGuide visual identity and retrieval practice. The upstream stage (pedestal and rings) is replaced by an orientation floor marking the median and coronal planes, with a readout naming the current view (anterior, lateral, posterior) and the screen side of the body's right. The system palette is a new atlas-convention palette (arteries red, veins blue, nerves yellow, lymphoid tissue green) chosen for separability, and all system descriptions are rewritten in OptoGuide's own Australian-English wording. "Test yourself" adds find-it and name-it questions with left/right feedback; its cues are original OptoGuide teaching notes linked to OpenStax sources. Source meshes, names and identifiers remain unchanged, and the viewer states the Human Atlas (MIT) and BodyParts3D (CC BY 4.0) credit on screen.

2026-09-29: Delivery encoding. The viewer now downloads a compact encoding of the same geometry from opt/ (13.8 MB instead of 33.0 MB): vertices reordered, positions quantised to 16 bits per structure (worst 14 micrometres), normals stored as 8-bit octahedral pairs (worst 0.95 degrees), each stream meshopt-encoded. It is generated from the unchanged, checksum-pinned buffers in this folder, which remain the provenance record; the regression decodes every structure and compares it with the original.