| --- |
| pretty_name: Diogenes Megacity Metro Multicamera Archive v01 |
| license: other |
| license_name: original-capture-archive-terms |
| license_link: https://huggingface.co/datasets/DiogenesLab/Diogenes_Megacity_Multicamera_Archive_v01/blob/main/NOTICE.md |
| tags: |
| - video |
| - camera-pose |
| - archival |
| - non-trainable |
| size_categories: |
| - n<1K |
| --- |
| |
| # Diogenes Megacity Metro Multicamera Archive v01 |
|
|
| The Diogenes project has closed. This public archive preserves original capture artifacts and historical limitations for inspection and reproducibility. **This archive manifest is fully transferred and verified.** `ARCHIVE_INDEX.json` lists the exact tar files and fixed verification revisions. This update's verified manifest covers **48 objects / 1,089,301,193 public bytes**, with **3 explicitly marked path-redacted copies**. All listed public members have passed source/archive SHA-256, pinned Hugging Face LFS size/hash, and anonymous download checks. |
|
|
| ## Scope and historical status |
|
|
| Three 60-second four-camera validation groups: two camera-path groups from 2026-08-04 and one director-mode group from 2026-08-05. Original plans, dynamic-object/co-visibility measurements, the available QC report and camera/system metadata accompany the rendered video. No Unity scene source, meshes or project assets are distributed here. |
|
|
| Historical provenance says `UCL-internal-validation-only`; that label remains unchanged. The Unity Companion License permits authored-content distribution subject to its conditions, while this archive makes no unrestricted model-training or underlying-asset grant. Copyright 2024 Unity Technologies ApS and the UCL notice are retained. |
|
|
| The validation scene has obvious geometric/visibility defects in some sampled views, including obstructed or effectively blank frames. Player fields may mirror camera 1 because no separate player character existed; they must not be treated as independently measured human motion. Euler rotation order was not confirmed with the original delivery requester. Preserve these limitations when interpreting the technical measurements. |
|
|
| ## Reading the archive |
|
|
| Files are grouped into ordinary uncompressed TAR shards under `archive/`. Each tar preserves the listed relative paths and ends with its own `MANIFEST.jsonl` containing exact member sizes and SHA-256. The repository-level `MANIFEST.jsonl` now contains the verified SHA-256 of every public member. `ARCHIVE_INDEX.json` records each tar hash, size, member count and fixed verification revision. |
|
|
| Use `tarfile.open(path, "r:")` and `extractfile(member)` to read a member without extracting paths. Four-camera packages contain `video_1..4.mp4`, `action_camera_1..4.json` and `systeminfo_1..4.json`. The action-camera files are **JSON arrays**, not JSON Lines. Row `frame` and `time` identify the time sample; camera position, quaternion and intrinsics retain the original conventions. Technical systeminfo files describe the capture surface, not a physical-device identity. |
|
|
| Historical SHA/QC files are source records, not a new certification. A `.public-copy.*` suffix identifies a small derivative with operator-private paths removed; its source digest is retained separately, and original attestations must not be applied to its changed bytes. No numeric measurements, failed-QC results or eligibility markers were upgraded. |
|
|
| ## Review and limits |
|
|
| All structured JSON/JSONL metadata in the source scope was read, including all rows, and checked for account/contact/credential identifiers and operator-private paths. Archive directories and representative media/container metadata were inspected. Visual review samples frames; it is not exhaustive frame annotation or semantic audio review. Original media bytes are preserved and checked against available source SHA lists during transfer. Pinned Hugging Face LFS size/hash verification precedes source deletion. |
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|
| This is an owner-authorized public project-closeout archive for inspecting capture quality, schemas and reproducibility. It is **not certified or newly authorized model-training data**. Original `non_trainable`, `internal-validation`, licence and QC statements are preserved; absent fields remain absent. Public access does not grant third-party game or asset rights. See `NOTICE.md` and the accompanying upstream notices. |
|
|
| Source and schema code: [CuddlerAI/Diogenes-Archive](https://github.com/CuddlerAI/Diogenes-Archive). |
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|
