| # structure_data — unified-schema 3D reconstruction datasets |
| |
| Three datasets for image-to-3D structure prediction (SFT data for Qwen3-VL-4B-Instruct): |
| |
| - **v11canon** — single Infinigen objects (chairs, tables, cabinets, etc.) |
| - **scene_v3** — multi-object Infinigen scenes |
| - **physx_v11canon** — PartNet-Mobility articulated objects, rotated to v11 chirality |
| |
| ## Layout |
| |
| ``` |
| v11canon/ |
| train.jsonl # 7045 rows |
| test_seen.jsonl # 393 rows (held-out objects in seen categories) |
| test_unseen.jsonl # 390 rows (objects in unseen categories) |
| images/ # *.png referenced by jsonls |
| scene_v3/ |
| train.jsonl |
| test.jsonl |
| images/ |
| physx_v11canon/ |
| train.jsonl # 1818 rows |
| test.jsonl # 202 rows |
| images/ |
| ``` |
| |
| ## JSONL format |
| |
| Each row: |
| ```json |
| { |
| "image": ["v11canon/images/foo_canonical_view.png", |
| "v11canon/images/foo_canonical_seg.png", |
| "v11canon/images/foo_view9.png"], |
| "conversations": [ |
| {"from": "human", "value": "<prompt with <image> tokens>"}, |
| {"from": "gpt", "value": "<compact JSON: materials + nodes + relations>"} |
| ] |
| } |
| ``` |
| |
| GT JSON top-level fields: |
| - `materials`: dict of `{family, desc}` keyed by integer index. `family` is a closed |
| vocab: Wood|Metal|Plastic|Glass|Fabric|Leather|Ceramic|Stone|Rubber|Other. |
| Materials are deduplicated by `(family, desc)`. |
| - `nodes`: dict keyed by integer index (string). Each entry has `parent` (int or null), |
| `material` (int as string, key into `materials`), `centroid`, `extents`, and |
| optional `joint` `{type ∈ {hinge, slide}, axis, position, range}`. |
| - `relations`: list of `{type ∈ {symmetric, instance}, a, b, plane?}`. |
|
|
| ## Conventions |
|
|
| - Image 1: rendered view of the object/scene with full materials. |
| - Image 2: segmentation map at the SAME camera as Image 1. |
| - Images 3..N: extra views with possible articulation (no seg map). |
| - Coordinates: unit-cube-normalized (max extent = 1.0). Y-up, +X-front. |
| - PhysX OBJs are pre-rotated 90° around Y so +Z-front becomes +X-front. |
|
|
