---
language: en
license: apache-2.0
tags:
- open-vocabulary
- semantic-segmentation
base_model:
- timm/vit_large_patch14_dinov2.lvd142m
- timm/vit_base_patch14_dinov2.lvd142m
---

<div align="center">
<h2>
<span style="color: #FF0078;">Free</span><span style="color: #00509A;">DA</span>: Training-Free Open-Vocabulary Segmentation with Offline Diffusion-Augmented Prototype Generation (CVPR 2024) <br>
</h2>
<p></p>

<p></p>

<h3>
<a href="https://lucabarsellotti.github.io//">Luca Barsellotti*</a>&ensp;
<a href="https://www.robertoamoroso.it//">Roberto Amoroso*</a>&ensp;
<a href="https://aimagelab.ing.unimore.it/imagelab/person.asp?idpersona=90/">Marcella Cornia</a>&ensp;
<a href="https://www.lorenzobaraldi.com//">Lorenzo Baraldi</a>&ensp;
<a href="https://aimagelab.ing.unimore.it/imagelab/person.asp?idpersona=1">Rita Cucchiara</a>&ensp;
</h3>


[Project Page](https://aimagelab.github.io/freeda/) | [Paper](https://arxiv.org/abs/2404.06542) | [Code](https://github.com/aimagelab/freeda)

</div>

<div align="center">
<figure>
  <img alt="Qualitative results" src="./src/assets/qualitatives1.png">
</figure>
</div>

## Method

<div align="center">
<figure>
  <img alt="FreeDA method" src="./src/assets/inference.png">
</figure>
</div>

<br/>

<details>
<summary> Additional qualitative examples </summary>
<p align="center">
  <img alt="Additional qualitative results" src="./src/assets/qualitatives.png" width="800" />
</p>
</details>

<details>
<summary> Additional examples <i>in-the-wild</i> </summary>
<p align="center">
  <img alt="In-the-wild examples" src="./src/assets/into_the_wild.png" width="800" />
</p>
</details>

## Installation

```
conda create --name freeda python=3.9
conda activate freeda
conda install pytorch torchvision torchaudio pytorch-cuda=11.8 -c pytorch -c nvidia
pip install -r requirements.txt
```

## How to use

```python
import freeda
from PIL import Image
import requests
from io import BytesIO

if __name__ == "__main__":
    fr = freeda.load("dinov2_vitb_clip_vitb")
    response1 = requests.get("https://farm9.staticflickr.com/8306/7926031760_b313dca06a_z.jpg")
    img1 = Image.open(BytesIO(response1.content))
    response2 = requests.get("https://farm3.staticflickr.com/2207/2157810040_4883738d2d_z.jpg")
    img2 = Image.open(BytesIO(response2.content))
    fr.set_categories(["cat", "table", "pen", "keyboard", "toilet", "wall"])
    fr.set_images([img1, img2])
    segmentation = fr()
    fr.visualize(segmentation, ["plot.png", "plot1.png"])
```

If you find FreeDA useful for your work please cite:
```
@inproceedings{barsellotti2024training
  title={Training-Free Open-Vocabulary Segmentation with Offline Diffusion-Augmented Prototype Generation},
  author={Barsellotti, Luca and Amoroso, Roberto and Cornia, Marcella and Baraldi, Lorenzo and Cucchiara, Rita},
  booktitle={Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition},
  year={2024}
}
```