Upload README.md with huggingface_hub

README.md

@@ -1,3 +1,67 @@
 ---
-license: cc-by-nc-sa-4.0
+pretty_name: SignSparK Data (CSL-Daily & How2Sign SMPL-X pose features)
+license: other
+language:
+  - zh
+  - en
+tags:
+  - sign-language
+  - sign-language-production
+  - pose
+  - smpl-x
+  - flow-matching
+size_categories:
+  - 1K<n<10K
 ---
+
+# SignSparK Data
+
+Prebuilt LMDB datasets for **SignSparK: Efficient Multilingual Sign Language
+Production via Sparse Keyframe Learning** (ECCV 2026). Contains SMPL-X 6D pose
+features, spoken-language translations, glosses, and per-frame segment
+annotations for **CSL-Daily** and **How2Sign**, ready to train/sample with the
+[SignSparK code](https://github.com/JianHe0628/SignSparK).
+
+- 📄 Paper: https://arxiv.org/abs/2603.10446
+- 🌐 Project page: https://cogvis-cvssp.github.io/papers/signspark/
+
+## Contents
+
+```
+train/  CSL-Daily_reopt_train.lmdb   How2Sign_reopt_train.lmdb
+dev/    CSL-Daily_reopt_dev.lmdb     How2Sign_reopt_dev.lmdb
+test/   CSL-Daily_reopt_test.lmdb    How2Sign_reopt_test.lmdb
+```
+
+Each `.lmdb` holds one `__meta__` key (clip index) plus one in-memory `.npz`
+blob per clip with: `language`, `translation`, `gloss`, `segment` (per-frame
+{0,1,2}), and `left/right/body/face_features` (6D rotations). Full schema in the
+repo's [`DATA.md`](https://github.com/JianHe0628/SignSparK/blob/main/DATA.md).
+
+## Usage
+
+```bash
+python tools/download_data.py --datasets CSL-Daily How2Sign --dest ./data
+export DATA_ROOT=$(pwd)/data
+python tools/inspect_lmdb.py ${DATA_ROOT}/lmdb/train/CSL-Daily_reopt_train.lmdb
+```
+
+## License & terms
+
+These are SMPL-X pose features **derived from** the CSL-Daily and How2Sign
+corpora and are released for **non-commercial research use** under the terms of
+the original datasets. Obtain and comply with each source dataset's license:
+
+- CSL-Daily: https://ustc-slr.github.io/datasets/2021_csl_daily/
+- How2Sign: https://how2sign.github.io/
+
+## Citation
+
+```bibtex
+@inproceedings{low2026signspark,
+  title     = {SignSparK: Efficient Multilingual Sign Language Production via Sparse Keyframe Learning},
+  author    = {Low, Jianhe and Symeonidis-Herzig, Alexandre and Ivashechkin, Maksym and Sincan, {\"O}zge Mercano{\u{g}}lu and Bowden, Richard},
+  booktitle = {European Conference on Computer Vision (ECCV)},
+  year      = {2026}
+}
+```