---
license: cc-by-nc-4.0
task_categories:
- image-to-3d
tags:
- 3D
- GaussianSplatting
- NovelViewSynthesis
viewer: false
---


# 🌱 PhysGaia: A Physics-Aware Dataset of Multi-Body Interactions for Dynamic Novel View Synthesis
PhysGaia is a pioneering physics-aware dataset for dynamic novel view synthesis aiming beyond **photorealism** toward **physical realism**! 

[[ Project Page](https://cv.snu.ac.kr/research/PhysGaia/index.html#) |  arXiv |  [Github](https://github.com/mjmjeong/PhysGaia)]






## **⭐️ Key Highlights**
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- **💥 Multi-body interaction**
- **💎 Various materials** across all modalities: Liquid, Gas, Viscoelastic substance, and Textile
- **✏️ Physical evaluation**: physics parameters & ground-truth 3D trajectories
- **😀 Research friendly!!**
    - Providing codes for recent Dynamic Novel View Synthesis (DyNVS) models
    - Supporting **diverse training setting**: both monocular & multiview reconstruction

## **📂 Dataset Structure**
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Each folder is corresponding to each scene, containing the following files: 

```bash
{material_type}_{scene_name}.zip
│
├── render/                              # Generated images (e.g., avatar renderings)
│   ├── train/                           # Images for training
│   └── test/                            # Images for evaluation
│
├── point_cloud.ply                      # COLMAP initialization (PatchMatch & downsampling)
├── camera_info_test.json                # Monocular camera info for test
├── camera_info_train_mono.json          # Monocular camera info for training
├── camera_info_train_multi.json         # Multi-view camera info for training
│
├── {scene_name}.hipnc                   # Houdini source file (simulation or scene setup)
├── particles/                           # Ground-truth trajectories
```

## **👩🏻‍💻 Code implementation**

Please check each branch for integrated code for recent DyNVS methods. 

- **Shape-of-motion (arXiv 24.07):** https://github.com/mjmjeong/PhysGaia/tree/SOM
- **4DGS (CVPR 24):** https://github.com/mjmjeong/PhysGaia/tree/4DGS_hex
- **STG (CVPR 24):** https://github.com/mjmjeong/PhysGaia/tree/spacetime
- **D-3DGS (CVPR 24):** https://github.com/mjmjeong/PhysGaia/tree/deformable

## **🔥 Ideal for “Next” Research**
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- 🧠 **Physical reasoning in dynamic scenes**
- 🤝 **Multi-body physical interaction modeling**
- 🧪 **Material-specific physics solver integration**
- 🧬 **Compatibility with existing DyNVS models**





## **💳 Citation**

```bash
TBD
```

## 🤝 Contributing
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We welcome contributions to expand the dataset (additional modality for new downstream tasks, , implementation for other models, etc.)
Reach out via opening an issue/discussion in the repo.

## 📬 Contact
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**Author**: Mijeong Kim & Gunhee Kim  
📧 Email: [mijeong.kim@snu.ac.kr](mailto:mijeong.kim@snu.ac.kr) & [gunhee2001@snu.ac.kr](mailto:gunhee2001@snu.ac.kr)  
🌐 LinkedIn: [Mijeong Kim](https://www.linkedin.com/in/mjmjeong) & [Gunhee Kim](https://www.linkedin.com/in/gunhee-kim-4072362b3/)


## 🛠️ Future Plans
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- Update fidelity of the generated scenes
- Add more easier scenes: providing more accessible starting points
- Add guidelines using Houdini source files: ex) How to obtain a flow field?

## **💳 License**
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This project is released under the Creative Commons Attribution-NonCommercial 4.0 license.
*✅ Free to use, share, and adapt for non-commercial research*