---
license: other
license_name: license
license_link: https://github.com/TQTQliu/Light-X/blob/master/LICENSE
tags:
- computer-vision
- video-generation
- video-editing
- 4d
- relighting
- camera-control
---

# Light-Syn Dataset

📄 **[Paper](https://arxiv.org/abs/2512.05115)**  |  🚀 **[Project Page](https://lightx-ai.github.io/)**  |  💻 **[GitHub](https://github.com/TQTQliu/Light-X)**


## Introduction

**Light-Syn** is a synthetic dataset designed for learning **controllable video generation** under varying **camera viewpoints** and **illumination conditions**.  
It is constructed via a synthetic data generation pipeline that produces **paired video samples** with controlled viewpoint and lighting variations from monocular visual inputs, and is introduced as training data for the **Light-X** framework, which enables joint control of camera motion and illumination in generative video models.

> **Release Note**  
> The current public release of **Light-Syn** includes only the **static scene subset**, due to copyright and data usage constraints.  
> For access to the complete dataset (e.g., dynamic scenes), please contact **Tianqi Liu (tq_liu at hust.edu.cn)**.

---

## Dataset Structure

The dataset is organized as a collection of **per-sample folders**, where each folder corresponds to one scene and contains paired videos, text prompts, and lighting conditions.

A high-level directory structure is as follows:

```
Light-Syn/
├── scene0/
│   ├── input.mp4          # Input video
│   ├── target.mp4         # Target video under new view / lighting
│   ├── render.mp4         # Rendered result
│   ├── mask.mp4           # Rendered valid-region mask
│   ├── relit_render.mp4   # Relit rendering result
│   ├── prompt.txt         # Text prompt describing the scene
│   ├── id.txt             # Reference frame index (integer)
│   ├── ref_light.png      # Reference lighting image (required for reference-based relighting)
│   └── scene_000.exr      # HDR environment map (required for HDR-based relighting)
├── scene1/
│   └── ...
```

## Citation
If you find our work useful for your research, please consider citing our paper:
```
@article{liu2025light,
  title={Light-X: Generative 4D Video Rendering with Camera and Illumination Control},
  author={Liu, Tianqi and Chen, Zhaoxi and Huang, Zihao and Xu, Shaocong and Zhang, Saining and Ye, Chongjie and Li, Bohan and Cao, Zhiguo and Li, Wei and Zhao, Hao and others},
  journal={arXiv preprint arXiv:2512.05115},
  year={2025}
}
```