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license: cc-by-nc-4.0
library_name: torch-pointcloud
tags:
- point-cloud
- 3d
- pytorch
- torch-pointcloud
- utonia
- self-supervised
---
# Model card for utonia.pretrain.pointcept
A Utonia self-supervised pretraining model (single encoder across point cloud domains).
> **Non-commercial.** These weights are released by [Pointcept/Utonia](https://github.com/Pointcept/Utonia) under CC BY-NC 4.0 and may be used for research and evaluation only.
## Model Details
- **Model Type:** Self-supervised pretraining
- **Model Stats:**
- Params (M): 137.3
- Input channels: 9
- **Paper:** [Utonia: Toward One Encoder for All Point Clouds](https://arxiv.org/abs/2603.03283)
- **Converted from:** [Pointcept/Utonia](https://github.com/Pointcept/Utonia) (CC-BY-NC-4.0)
- **Library:** [torch-pointcloud](https://github.com/arthurdjn/pytorch-pointcloud)
## Install
```bash
pip install torch-pointcloud
```
This checkpoint also needs `spconv` and `flash-attn`, which need a build matching your torch and CUDA: see the [installation guide](https://pytorch-pointcloud.org/installation/).
## Usage
```python
import torch
import torch_pointcloud as tp
from torch_pointcloud.utils.data import collate
model, info = tp.create_model(
"utonia.pretrain.pointcept",
task="base",
pretrained=True,
return_info=True,
)
model = model.cuda().eval() # GPU-only kernels
# synthetic sample with the keys a dataset provides
num_points = 8192
sample = {
"pos": torch.randn(num_points, 3),
"color": torch.rand(num_points, 3) * 255,
"normal": torch.randn(num_points, 3),
"segment": torch.zeros(num_points, dtype=torch.long),
"instance": torch.zeros(num_points, dtype=torch.long),
}
data = info["transform"](sample)
data = collate([data])
data = {key: value.cuda() for key, value in data.items()}
with torch.no_grad():
out = model(data.get("x"), data["pos_grid"], data["batch"], pos=data["pos"])
```
## Citation
```bibtex
@article{utonia2026,
title = {Utonia: Toward One Encoder for All Point Clouds},
author = {Yujia Zhang and Xiaoyang Wu and Yunhan Yang and Xianzhe Fan and Han Li and Yuechen Zhang and Zehao Huang and Naiyan Wang and Hengshuang Zhao},
journal = {arXiv preprint arXiv:2603.03283},
year = {2026}
}
@software{dujardin2026pytorchpointcloud,
author = {Arthur Dujardin},
title = {PyTorch PointCloud},
year = {2026},
doi = {10.5281/zenodo.22159632},
url = {https://github.com/arthurdjn/pytorch-pointcloud},
}
```
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