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Existing InterAct SMPL-H parameters
This repository organizes existing SMPL-H parameters recovered from InterAct processing assets. It is an independent research preparation, not an official InterAct release. The repository page is public; file downloads require manual approval.
Included data
| Subset | Parameter records | Summed file frames | Representation |
|---|---|---|---|
| BEHAVE | 1,766 | 439,454 | SMPL-H, 10 shape coefficients; corrected pairs preferred |
| GRAB | 1,085 | 255,760 | Existing SMPL-X-to-SMPL-H fits, framewise 10 shape coefficients |
| NeuralDome / HODome | 1,491 | 408,733 | Native SMPL-H, 16 shape coefficients |
| IMHD | 595 | 162,978 | Native SMPL-H, 16 shape coefficients |
| Total | 4,937 | 1,266,925 |
Each record includes the author's full human parameters, paired object track, and text. Object geometry and associated textures/materials are also included. Files are preserved byte for byte in uncompressed tar shards. Record counts and frame sums include parent clips and their segments; they are not counts of unique capture sessions or deduplicated duration.
NeuralDome and IMHD store gender=neutral and use 16 shape coefficients.
BEHAVE and the existing GRAB fits retain their stored male/female models.
These are existing parameters with their original gender and shape. A new
conversion to neutral SMPL-H with a static fitted shape per sequence has not
been run. No fitting quality claim is made by this packaging step.
Layout
raw_data/Data_release/
behave/
sequences/part-00000.tar
objects/part-00000.tar
grab/
sequences/part-00000.tar
objects/part-00000.tar
neuraldome/
sequences/part-00000.tar
objects/part-00000.tar
imhd/
sequences/part-00000.tar
objects/part-00000.tar
metadata/
behave-sequences.jsonl
grab-sequences.jsonl
neuraldome-sequences.jsonl
imhd-sequences.jsonl
summary.json
After approval, authenticate with hf auth login, download the desired subset,
and extract every sequence and object shard into the same subset directory:
hf download guand1/interact-smplh --type dataset \
--include 'raw_data/Data_release/neuraldome/*' 'metadata/*' \
--local-dir interact-smplh
mkdir -p extracted/neuraldome
for archive in interact-smplh/raw_data/Data_release/neuraldome/{sequences,objects}/*.tar; do
tar -xf "$archive" -C extracted/neuraldome
done
The resulting layout is:
neuraldome/
sequences_canonical/<sequence_id>/{human.npz,object.npz,text.txt}
objects/<object_name>/...
Parameter conventions
NeuralDome and IMHD human.npz store poses[T,156], trans[T,3],
betas[16], and gender.
The pose order is root axis-angle (3), body axis-angle (63), left hand
axis-angle (45), right hand axis-angle (45). Use the corresponding extended
SMPL-H model with 16 shape directions and the stored gender. Hand rotations are
absolute axis angles; use flat_hand_mean=True when loading with the SMPL-X
Python package. Retain all 16 shape coefficients. A 10-beta model or an
arbitrarily substituted neutral model will reconstruct a different body.
BEHAVE uses the same packed pose layout with betas[10]. The 1,763 corrected
records are paired with their corrected object tracks and use absolute hand
rotations (flat_hand_mean=True). Three records retain the original uncorrected
human/object pair and mean-offset hand convention (flat_hand_mean=False).
The per-record manifest identifies these cases; do not apply one hand convention
to every BEHAVE record.
GRAB contains only the 1,085 SMPL-H fits already available from the former
conversion. These are split fields: global_orient[T,3], body_pose[T,63],
left_hand_pose[T,45], right_hand_pose[T,45], transl[T,3],
betas[T,10], and gender. Use absolute hand rotations with
flat_hand_mean=True. Preserve the full framewise betas array: its rows may
vary. These are not raw GRAB SMPL-X parameters and have not been newly refitted
or certified by this packaging step. The other 262 canonical GRAB sources
have no existing SMPL-H fit and are absent from this package.
Human and object tracks share the author's canonical coordinate frame. Keep them paired. Frame rate is not encoded in these NPZ files; the manifest leaves it unspecified rather than assigning an inferred rate. Licensed SMPL/MANO model files and model-transfer matrices are not included.
Access conditions and pending sources
The GRAB license and BEHAVE license require prior written permission for sharing with third parties. A Hugging Face access request does not replace that permission. These assets are stored behind manual access review at the repository owner's request. A repository approval grants access to all four subsets. Reviewers must ensure the original permissions cover that sharing and use; agreement to these repository terms alone is insufficient.
CHAIRS and corrected OMOMO are available as SMPL-X sources and are pending the new SMPL-H conversion, so they are also absent from this existing-SMPL-H package.
License and attribution
NeuralDome, IMHD and InterAct annotations use CC BY-NC-SA 4.0. GRAB and BEHAVE retain their linked original custom licenses, including their redistribution restrictions. There is no blanket CC license for the combined repository. Preserve attribution, use only for permitted non-commercial purposes, indicate modifications, and apply the applicable source license to adaptations. Packaging changes directory layout and adds manifests; the included motion/geometry file bytes are unchanged.
Please cite InterAct and each source dataset used, following their original citation instructions:
No endorsement by the source dataset authors is implied.
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