Organize Track 2 trajectory variants
#4
by nv-shalinj - opened
This view is limited to 50 files because it contains too many changes. See the raw diff here.
- README.md +1 -118
- track_1/README.md +120 -52
- track_1/data/chunk-000/episode_000000.parquet +2 -2
- track_1/data/chunk-000/episode_000001.parquet +2 -2
- track_1/data/chunk-000/episode_000002.parquet +2 -2
- track_1/data/chunk-000/episode_000003.parquet +2 -2
- track_1/data/chunk-000/episode_000004.parquet +2 -2
- track_1/data/chunk-000/episode_000005.parquet +2 -2
- track_1/data/chunk-000/episode_000006.parquet +2 -2
- track_1/data/chunk-000/episode_000007.parquet +2 -2
- track_1/data/chunk-000/episode_000008.parquet +2 -2
- track_1/data/chunk-000/episode_000009.parquet +2 -2
- track_1/data/chunk-000/episode_000010.parquet +2 -2
- track_1/data/chunk-000/episode_000011.parquet +2 -2
- track_1/data/chunk-000/episode_000012.parquet +2 -2
- track_1/data/chunk-000/episode_000013.parquet +2 -2
- track_1/data/chunk-000/episode_000014.parquet +2 -2
- track_1/data/chunk-000/episode_000015.parquet +2 -2
- track_1/data/chunk-000/episode_000016.parquet +2 -2
- track_1/data/chunk-000/episode_000017.parquet +2 -2
- track_1/data/chunk-000/episode_000018.parquet +2 -2
- track_1/data/chunk-000/episode_000019.parquet +2 -2
- track_1/data/chunk-000/episode_000020.parquet +2 -2
- track_1/data/chunk-000/episode_000021.parquet +2 -2
- track_1/data/chunk-000/episode_000022.parquet +2 -2
- track_1/data/chunk-000/episode_000023.parquet +2 -2
- track_1/data/chunk-000/episode_000024.parquet +2 -2
- track_1/data/chunk-000/episode_000025.parquet +2 -2
- track_1/data/chunk-000/episode_000026.parquet +2 -2
- track_1/data/chunk-000/episode_000027.parquet +2 -2
- track_1/data/chunk-000/episode_000028.parquet +2 -2
- track_1/data/chunk-000/episode_000029.parquet +2 -2
- track_1/data/chunk-000/episode_000030.parquet +3 -0
- track_1/data/chunk-000/episode_000031.parquet +3 -0
- track_1/data/chunk-000/episode_000032.parquet +3 -0
- track_1/data/chunk-000/episode_000033.parquet +3 -0
- track_1/data/chunk-000/episode_000034.parquet +3 -0
- track_1/data/chunk-000/episode_000035.parquet +3 -0
- track_1/data/chunk-000/episode_000036.parquet +3 -0
- track_1/data/chunk-000/episode_000037.parquet +3 -0
- track_1/data/chunk-000/episode_000038.parquet +3 -0
- track_1/data/chunk-000/episode_000039.parquet +3 -0
- track_1/data/chunk-000/episode_000040.parquet +3 -0
- track_1/data/chunk-000/episode_000041.parquet +3 -0
- track_1/data/chunk-000/episode_000042.parquet +3 -0
- track_1/data/chunk-000/episode_000043.parquet +3 -0
- track_1/data/chunk-000/episode_000044.parquet +3 -0
- track_1/data/chunk-000/episode_000045.parquet +3 -0
- track_1/data/chunk-000/episode_000046.parquet +3 -0
- track_1/data/chunk-000/episode_000047.parquet +3 -0
README.md
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---
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license:
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pretty_name: Video to Data (V2D) Challenge Dataset
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tags:
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- robotics
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- robot-learning
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- manipulation
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- human-object-interaction
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- motion-capture
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- video
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- 4d-reconstruction
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- reinforcement-learning
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- egocentric-video
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---
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# Video to Data (V2D) Challenge Dataset
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## Dataset Description
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The **Video to Data (V2D) Challenge Dataset** is an NVIDIA-developed benchmark for studying the complete path from human demonstration video to physics-grounded robot behavior. It supports three coupled challenge tracks over shared manipulation tasks: **4D human-object interaction reconstruction**, **robotic grounding**, and **end-to-end egocentric transfer**.
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- [Challenge website](https://nvidia-isaac.github.io/video_to_data/v2d_challenge/)
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- [Starter toolkit](https://github.com/nvidia-isaac/video_to_data)
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- [Dataset repository](https://huggingface.co/datasets/nvidia/video_to_data_challenge)
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- Contact: [v2d_challenge@nvidia.com](mailto:v2d_challenge@nvidia.com)
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## Challenge Tracks
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| Track | Input | Goal | Evaluation summary |
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| --- | --- | --- | --- |
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| **Track 1: Reconstruction** | Monocular third-person RGB video | Recover the human, object pose, and object geometry as a metric 4D human-object interaction scene in a consistent world frame | Reconstruction accuracy and physical plausibility relative to the multi-view reference |
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| **Track 2: Robotic Grounding** | Third-person 4D human-object interaction trajectories at different input-noise tiers | Retarget the demonstration and learn an executable policy for the robotic embodiment and simulator | Object-tracking performance at each input tier |
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| **Track 3: Egocentric** | Egocentric human demonstration video | Produce an executable robot policy through either an explicit reconstruct-and-retarget pipeline or an implicit end-to-end method | Final results produced with the official evaluation script |
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### Track 1: Reconstruction
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Track 1 evaluates monocular 4D human-object interaction reconstruction under challenging conditions including occlusion, bimanual coordination, and long-horizon manipulation.
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Participants reconstruct:
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- the human body and hands;
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- object pose trajectories;
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- object geometry; and
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- metric scale.
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Track 1 is evaluated along two equally weighted axes:
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1. **Accuracy**
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- Chamfer distance to the multi-view human mesh
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- Chamfer distance to the multi-view object mesh
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2. **Physical plausibility**
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- Human-joint acceleration error
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- Object acceleration error
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- Contact penetration error
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### Track 2: Robotic Grounding
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Track 2 measures how upstream reconstruction quality affects human-to-robot transfer and downstream policy learning.
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The dataset provides three input tiers:
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1. **Tier 1 — Clean multi-view capture:** an upper-bound input for upstream reconstruction.
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2. **Tier 2 — Synthetic corruption:** trajectories with jitter, dropout, and contact errors sampled from Track 1 error distributions.
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3. **Tier 3 — Off-the-shelf reconstruction:** trajectories produced by current reconstruction methods.
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Each tier is scored separately. Metrics include **AUC**, **SP-SR**, **MP-SR**, and **MPPE**, as defined by the challenge evaluation protocol.
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### Track 3: Egocentric
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Track 3 evaluates the full pipeline from egocentric human video to robot behavior. The track is method-agnostic: participants may use an explicit reconstruction-and-retargeting pipeline, an end-to-end model, a pretrained vision-language-action model, a world-action model, or a hybrid approach.
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The NVIDIA-collected data includes human-object manipulation recordings and associated assets made available for development and evaluation. Depending on the released split, these assets may include:
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- egocentric videos;
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- motion-capture trajectories;
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- sequence metadata;
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- textured 3D object meshes; and
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- URDF object descriptions.
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Use `eval_e2e.py` from the starter toolkit to package the required reconstructions and recorded policy evaluations.
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## Download
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Install the Hugging Face Hub client:
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```bash
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python -m pip install -U "huggingface_hub"
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```
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Download the complete dataset repository while preserving its file structure:
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```bash
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hf download nvidia/video_to_data_challenge \
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--repo-type dataset \
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--local-dir ./video_to_data_challenge
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```
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If authentication is requested, first run:
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```bash
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hf auth login
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```
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The same operation can be performed from Python:
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```python
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from huggingface_hub import snapshot_download
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snapshot_download(
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repo_id="nvidia/video_to_data_challenge",
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repo_type="dataset",
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local_dir="./video_to_data_challenge",
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)
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```
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Large assets are stored using Hugging Face's large-file infrastructure. Make sure sufficient disk space is available before downloading the complete repository.
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## Support
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For challenge or dataset questions, contact [v2d_challenge@nvidia.com](mailto:v2d_challenge@nvidia.com). For software issues, use the issue tracker in the [Video to Data repository](https://github.com/nvidia-isaac/video_to_data/issues).
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license: apache-2.0
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track_1/README.md
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# Track 1
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| Episodes |
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| Frames |
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| Rate | 30 fps |
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| Tasks |
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| Cameras | 1 stream per episode,
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## Layout
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```
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track_1/
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├── data/chunk-000/episode_0000NN.parquet
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├── videos/chunk-000/observation.images.exo_camera/episode_0000NN.mp4
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└── meta/
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├── info.json
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├── episodes.jsonl episode lengths and
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├── episodes_metadata.jsonl sequence, camera,
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├── episodes_stats.jsonl
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└── tasks.jsonl
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```
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##
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- `camera`
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- `object`
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- `object_prompt`
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- `video_key`
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action description is resolved through the episode's `task_index` and
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`meta/tasks.jsonl`.
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##
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##
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- `task_index`
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# Track 1
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Single-view human-object interaction sequences from the FORM-HOI multiview export
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(rig `nova_hawk`, scene `sc_office_4exo_1`). Every episode has **one static third-person
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RGB video**, the full-body SOMA-X / MHR reconstruction, and the 6-DoF pose of one tracked
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object with a textured mesh. Object poses are **`world_T_object` in the source OpenCV world
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frame**, so placing the mesh at a logged pose recovers its reconstructed location.
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| Episodes | 67 |
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| Frames | 48,846 (245–1034 per episode, mean 729) |
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| Rate | 30 fps |
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| Tasks | 62 distinct instructions |
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| Cameras | 1 stream per episode, 67 clips, 4 distinct physical cameras |
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| Objects | 33, each with one textured mesh |
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| Subjects | 14 |
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## Layout
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```
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track_1/
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├── data/chunk-000/episode_0000NN.parquet human + object pose, one row per frame
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├── videos/chunk-000/observation.images.exo_camera/episode_0000NN.mp4
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├── mesh/<object>/<object>.glb textured mesh, one per object
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└── meta/
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├── info.json schema, feature shapes/names, counts, tasks, objects
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├── episodes.jsonl episode lengths and tasks
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├── episodes_metadata.jsonl episode → source sequence, camera, object, mesh, person
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├── episodes_stats.jsonl per-episode feature statistics
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└── tasks.jsonl task descriptions
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## Video
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Each episode ships exactly one camera under the single feature key `observation.images.exo_camera`
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(1536×1152, h264, yuv420p, 30 fps).
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Which physical camera it is varies per episode and is recorded in
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`meta/episodes_metadata.jsonl` (`camera`) and in every parquet's schema metadata (`camera`):
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| Camera | Episodes |
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| `back_stereo_camera_left` | 11 |
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| `front_stereo_camera_left` | 15 |
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| `left_stereo_camera_left` | 30 |
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| `right_stereo_camera_left` | 11 |
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Files are byte-identical copies of the source H.264 videos; no re-encoding was performed.
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Video is **frame-exact with the parquets**: row *i* is frame *i*, verified on every clip.
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No camera intrinsics or extrinsics are included. The source calibration sequence id is kept
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per episode (`calibration_sequence`) but is not a calibration matrix.
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## Parquet columns
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One row per frame. Fixed-size float32 lists; multi-dimensional tensors are flattened
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row-major and their shape is declared in `meta/info.json` under `features`.
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### Human, SOMA-X parameters
|
| 60 |
+
|
| 61 |
+
| Column | Shape | Meaning |
|
| 62 |
+
|---|---|---|
|
| 63 |
+
| `observation.human.pose` | 231 | SOMA-X local joint rotations, axis-angle radians, 77 joints x 3 |
|
| 64 |
+
| `observation.human.translation` | 3 | SOMA-X root translation, metres |
|
| 65 |
+
| `observation.human.identity_coeffs` | 45 | SOMA-X identity coefficients (MHR identity model) |
|
| 66 |
+
| `observation.human.scale_params` | 68 | SOMA-X scale parameters |
|
| 67 |
+
| `observation.human.bone_length_flexibles` | 6 | SOMA-X flexible bone lengths |
|
| 68 |
+
|
| 69 |
+
`observation.human.pose` holds 77 local joint rotation vectors (axis-angle, radians). The
|
| 70 |
+
joint order is the `names` list of that feature in `meta/info.json` (`<joint>.rx/.ry/.rz`).
|
| 71 |
+
|
| 72 |
+
### Human, MHR reconstruction outputs
|
| 73 |
+
|
| 74 |
+
| Column | Shape | Meaning |
|
| 75 |
+
|---|---|---|
|
| 76 |
+
| `observation.mhr.global_rot` | 3 | root orientation, axis-angle rotation vector (radians) |
|
| 77 |
+
| `observation.mhr.body_pose_params` | 133 | MHR body pose parameters |
|
| 78 |
+
| `observation.mhr.hand_pose_params` | 108 | MHR hand pose parameters (both hands) |
|
| 79 |
+
| `observation.mhr.scale_params` | 28 | MHR skeleton scale parameters |
|
| 80 |
+
| `observation.mhr.shape_params` | 45 | MHR identity/shape coefficients |
|
| 81 |
+
| `observation.mhr.model_params` | 204 | concatenated MHR model parameter vector as emitted by the reconstruction pipeline |
|
| 82 |
+
| `observation.mhr.cam_t` | 3 | predicted root translation in the source world frame (metres) |
|
| 83 |
+
| `observation.mhr.keypoints_3d` | 70x3 | 70 predicted 3D keypoints, xyz metres, source world frame |
|
| 84 |
+
| `observation.mhr.joint_coords` | 127x3 | 127 MHR joint positions, xyz metres, source world frame |
|
| 85 |
+
| `observation.mhr.joint_global_rots` | 127x3x3 | 127 MHR joint global rotation matrices, row-major |
|
| 86 |
+
|
| 87 |
+
Each feature entry in `meta/info.json` also records `source_key`, the key of the tensor in
|
| 88 |
+
the source `mhr_params_mv.pt` it was copied from.
|
| 89 |
|
| 90 |
+
### Object
|
| 91 |
|
| 92 |
+
| Column | Shape | Meaning |
|
| 93 |
+
|---|---|---|
|
| 94 |
+
| `observation.object.pose` | 7 | `[x, y, z, qw, qx, qy, qz]`, metres, **quaternion w-first**, `world_T_object` |
|
| 95 |
+
| `observation.object.visible` | 1 | false where the source pose was invalid; pose is then all zeros |
|
| 96 |
|
| 97 |
+
Each episode tracks exactly one object. Its name is in the parquet schema metadata
|
| 98 |
+
(`objects`, `object_mesh`) and in `meta/episodes_metadata.jsonl` (`object`, `mesh`). The
|
| 99 |
+
mesh is stored once per object: `white_desk` → `mesh/white_desk/white_desk.glb`. Frames with
|
| 100 |
+
an invisible object: episode 2 (1 frame), episode 47 (1 frame).
|
|
|
|
|
|
|
| 101 |
|
| 102 |
+
### Index columns
|
| 103 |
+
|
| 104 |
+
`timestamp` (float32, `frame_index / 30`), `frame_index`, `episode_index`, `index`
|
| 105 |
+
(global), `task_index`, `next.done` (true on the last frame of an episode).
|
| 106 |
+
|
| 107 |
+
## Quickstart
|
| 108 |
+
|
| 109 |
+
```python
|
| 110 |
+
import json
|
| 111 |
+
import numpy as np
|
| 112 |
+
import pyarrow.parquet as pq
|
| 113 |
+
|
| 114 |
+
t = pq.read_table("data/chunk-000/episode_000000.parquet")
|
| 115 |
+
md = {k.decode(): v.decode() for k, v in t.schema.metadata.items()}
|
| 116 |
+
print(md["camera"], md["objects"], md["object_mesh"])
|
| 117 |
+
|
| 118 |
+
def col(name): # (frames, D) float32
|
| 119 |
+
return t[name].combine_chunks().flatten().to_numpy().reshape(t.num_rows, -1)
|
| 120 |
+
|
| 121 |
+
obj_pose = col("observation.object.pose") # x y z qw qx qy qz
|
| 122 |
+
visible = t["observation.object.visible"].to_numpy(zero_copy_only=False)
|
| 123 |
+
human_pose = col("observation.human.pose").reshape(-1, 77, 3)
|
| 124 |
+
joint_rots = col("observation.mhr.joint_global_rots").reshape(-1, 127, 3, 3)
|
| 125 |
+
```
|
| 126 |
+
|
| 127 |
+
### Placing the mesh at a pose
|
| 128 |
+
|
| 129 |
+
```python
|
| 130 |
+
import trimesh
|
| 131 |
+
from scipy.spatial.transform import Rotation
|
| 132 |
+
|
| 133 |
+
mesh = trimesh.load(md["object_mesh"], process=False).to_geometry()
|
| 134 |
+
x, y, z, qw, qx, qy, qz = obj_pose[visible][100]
|
| 135 |
+
T = np.eye(4)
|
| 136 |
+
T[:3, :3] = Rotation.from_quat([qx, qy, qz, qw]).as_matrix() # scipy is xyzw
|
| 137 |
+
T[:3, 3] = [x, y, z]
|
| 138 |
+
mesh.apply_transform(T)
|
| 139 |
+
```
|
| 140 |
|
| 141 |
+
## Provenance
|
| 142 |
|
| 143 |
+
Built from the FORM-HOI `sc_office_4exo_1/data_export_3` export: `soma_params.npz`,
|
| 144 |
+
`mhr_params_mv.pt`, `poses.npy`, `pose_valid_mask.npy`, `object_mesh/output_aligned.glb`,
|
| 145 |
+
`hoi_metadata.yaml` and the selected `videos/<camera>.mp4` of each sequence. Every copied
|
| 146 |
+
file was verified against the sha256 in the source `commit.json`. Episode order follows the
|
| 147 |
+
selection list; `episodes_metadata.jsonl` maps each episode back to its source sequence id.
|
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