File size: 2,043 Bytes
ee936d6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | # 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.
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