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license: apache-2.0
task_categories:
- robotics
tags:
- robotics
- lerobot
- bimanual
- deformable-object-manipulation
- cloth
- simulation
---
# flatten_tshirt — bimanual t-shirt flattening
A dual-arm Piper flattens a crumpled t-shirt on a table. Success combines a coverage signal (catches 'still crumpled') with a shape-distance signal against a canonical flat pose (catches 'spread out but still folded').
Part of a bimanual deformable-object (cloth / bag) manipulation benchmark. Physics is a GPU
cloth solver co-simulated with the robot in a single model; observations are rendered with a
photorealistic renderer.
## Contents
| | |
|---|---|
| Format | LeRobot `v3.0` (parquet + mp4, compacted) |
| Robot | `sim_dual_piper_deformable` |
| Episodes | 200 |
| Frames | 41,464 |
| Tasks | 1 |
| Control rate | 25 fps |
| Cameras | `static_cam`, `right_hand_cam`, `left_hand_cam` |
| Video | 1280×720, H264 |
| State / action | 14-D each (left 6 joints + gripper, right 6 joints + gripper) |
## Usage
```python
from lerobot.datasets.lerobot_dataset import LeRobotDataset
ds = LeRobotDataset("hwk0809/flatten-tshirt")
```
If your `torchcodec` build cannot decode these videos, pass `video_backend="pyav"`.
## License
Apache-2.0.
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