---
license: cc-by-4.0
size_categories:
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task_categories:
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configs:
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    path: data/all-*
---

# LychSim Scenes Dataset

[Project Page](https://lychsim.github.io/) | [Paper](https://huggingface.co/papers/2605.12449) | [GitHub](https://github.com/wufeim/LychSim)

LychSim is a highly controllable and interactive simulation framework built upon Unreal Engine 5 for vision research. This dataset contains scene-level procedural rules for the simulator.

## Description

For each scene, we capture structural priors — navigable floor spaces, road areas, pedestrian walks, and dynamic vehicle / pedestrian trajectories — as structured records keyed to the underlying placed actors. These spatial priors guide the procedural generation process, ensuring that newly synthesized layouts remain faithful to the original scene semantics.

## Sample Usage

You can load the dataset using the Hugging Face `datasets` library:

```python
from datasets import load_dataset

scenes = load_dataset("wufeim/lychsim_scenes")
```

## Citation

If you find our work useful for your research, please consider citing our work:

```bibtex
@article{ma2026lychsim,
  title={LychSim: A Controllable and Interactive Simulation Framework for Vision Research},
  author={Ma, Wufei and Wang, Chloe and Chen, Siyi and Peng, Jiawei and Li, Patrick and Yuille, Alan},
  journal={arXiv preprint arXiv:2605.12449},
  year={2026}
}
```

## License

This dataset is released under the Creative Commons Attribution 4.0 International license (CC BY 4.0).