Request research access
Download requests are reviewed manually. Original dataset licenses continue to apply.
Provide your research purpose and evidence of the required original dataset permissions. GRAB and BEHAVE remain under their original restrictive licenses. Approval does not grant rights beyond those licenses.
Log in or Sign Up to review the conditions and access this dataset content.
InterAct SMPL-H parameters
This repository organizes existing SMPL-H parameters recovered from InterAct processing assets and the 6,654 newly fitted records completed on 2026-10-14. It is an independent research preparation, not an official InterAct release. The repository page is public; file downloads require manual approval.
Included data
| Subset | Existing records | Newly fitted records | Total records | Summed file frames |
|---|---|---|---|---|
| BEHAVE | 1,766 | 0 | 1,766 | 439,454 |
| GRAB | 1,085 | 262 | 1,347 | 402,819 |
| NeuralDome / HODome | 1,491 | 0 | 1,491 | 408,733 |
| IMHD | 595 | 0 | 595 | 162,978 |
| CHAIRS | 0 | 1,502 | 1,502 | 399,762 |
| OMOMO corrected v2 | 0 | 4,890 | 4,890 | 904,129 |
| Total | 4,937 | 6,654 | 11,591 | 2,717,875 |
The original 4,937 records include human parameters, paired object tracks, text, and object geometry. Existing files retain their original bytes. The new 6,654-record release contains fitted human parameters and necessary per-record metadata; paired objects, text and new object geometry are not part of this addition. Match the sequence IDs to the authorized InterAct source data when using the new parameters for human-object interaction. All files are stored 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.
The original 4,937 records retain their stored gender, shape and hand convention.
Only the newly added 6,654 records use neutral SMPL-H with one fitted static
10-coefficient shape per sequence. The combined repository shares SMPL-H52
topology but has multiple gender, shape and storage conventions. Read the
per-record manifests when choosing a reconstruction model.
Layout
raw_data/Data_release/
behave/
sequences/part-00000.tar
objects/part-00000.tar
grab/
sequences/part-00000.tar
sequences/neutral-static-v1-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
chairs/
sequences/neutral-static-v1-part-00000.tar
omomo/
sequences/neutral-static-v1-part-00000.tar
metadata/
behave-sequences.jsonl
grab-sequences.jsonl
neuraldome-sequences.jsonl
imhd-sequences.jsonl
chairs-sequences.jsonl
omomo-sequences.jsonl
new-neutral-smplh-v1-sequences.jsonl
neutral-static-v1-release.json
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's 1,085 legacy SMPL-H fits use 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 are
included in the new neutral/static-shape release described below.
Newly fitted neutral/static-shape records
The new release contains GRAB 262, CHAIRS 1,502 and corrected-v2 OMOMO 4,890:
6,654 sequences / 1,450,950 summed file frames. Its human.npz stores
poses[T,156], trans[T,3], betas[10], fit_betas[10], gender=neutral,
and source/target convention metadata. Shapes are fixed across each sequence.
Pose channels are root (3), body (63), left hand (45), right hand (45), all
absolute axis angles. Reconstruct with neutral SMPL-H, 10 shape coefficients,
use_pca=False, and flat_hand_mean=True, or convert rotations to matrices
for SMPLHLayer. These conventions differ from the legacy GRAB split-field,
framewise-shape files, which remain available unchanged.
The conversion reconstructs each original SMPL-X source using its source gender, beta dimensions and hand convention. GRAB uses PCA24 hands and its personalized template; CHAIRS uses 10 source betas; corrected OMOMO uses all 16 source betas. The official SMPL-X-to-SMPL-H correspondence defines target vertices. Static shape is fitted on keyframes, followed by full-length windowed pose/translation fitting with hand weighting and source-relative temporal continuity. The fitted human and original paired objects retain the source canonical world frame. Additional contact correction is not applied.
The new per-record manifests include the method version, source provenance and source/target parameter conventions. Detailed fitting reports remain in the processing project. Native SMPL-X and SMPL-H joint regressors differ. OMOMO's corrected hand articulation is author-generated correction data rather than newly observed finger capture. Source train/test labels are retained where available. These are parameter archives; training features and new mean/std statistics are not included.
New tar shards contain only sequences_canonical/<sequence_id>/human.npz.
Extract them into the same subset directory as the legacy shards.
The combined grab-sequences.jsonl covers all 1,347 GRAB records;
new-neutral-smplh-v1-sequences.jsonl selects only the new 6,654 records.
The existing GRAB object geometry archive remains available. Obtain the
new sequences' paired object/text data and CHAIRS/OMOMO geometry from the
authorized upstream release when needed.
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
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 included 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 derived from the authorized InterAct author release. Their original source and annotation terms continue to apply to the derived SMPL-H files.
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. Existing motion and geometry remain unchanged. New fitted human parameters are explicitly identified as modifications. No additional paired object, text or geometry payload is included in this addition.
Please cite InterAct and each source dataset used, following their original citation instructions:
- InterAct repository and license
- InterAct license document
- HODome / NeuralDome
- IMHD / I'M HOI
- OMOMO
- InterAct author data and source attribution for CHAIRS
No endorsement by the source dataset authors is implied.
- Downloads last month
- 19