---
license: cc-by-nc-4.0
task_categories:
  - image-segmentation
tags:
  - mirror-detection
  - video-understanding
  - video-mirror-detection
  - scene-understanding
  - pytorch
pretty_name: VMD-Net (Video Mirror Detection Network)
---

# VMD-Net — Video Mirror Detection Network

Pre-trained weights for **VMD-Net**, introduced in:

> **Learning to Detect Mirrors from Videos via Dual Correspondences**  
> Jiaying Lin\*, Xin Tan\*, Rynson W. H. Lau  
> CVPR 2023  
> [Paper](https://openaccess.thecvf.com/content/CVPR2023/papers/Lin_Learning_To_Detect_Mirrors_From_Videos_via_Dual_Correspondences_CVPR_2023_paper.pdf) · [Project Page](https://jiaying.link/cvpr2023-vmd/) · [Dataset (VMD-D)](https://huggingface.co/datasets/garrying/VMD-D)

## Model Summary

VMD-Net detects mirrors in video sequences by exploiting **dual correspondences** — both intra-frame (spatial) and inter-frame (temporal) — via a Relation Attention module built on a DeepLabV3 encoder backbone. This design lets the model handle frames where intra-frame mirror cues are weak or absent, producing accurate and temporally consistent segmentation masks.

| File | Description |
|------|-------------|
| `best.pth` | Best checkpoint (714 MB), saved as `{'model': state_dict, ...}` |
| `results/results.zip` | VMD-Net predictions on the VMD-D test set |
| `results/baseline_results.zip` | Baseline method predictions for comparison |

## Loading the Weights

```python
import torch
from networks.VMD_network import VMD_Network   # from the code release

model = VMD_Network()
checkpoint = torch.load("best.pth", map_location="cpu")
model.load_state_dict(checkpoint["model"])
model.eval()
```

Download the checkpoint:
```bash
huggingface-cli download garrying/VMD-Net best.pth --local-dir ./weights
```

## Training Dataset

This model was trained and evaluated on **VMD-D**, the first large-scale video mirror detection dataset:
- 14,987 frames from 269 videos with manually annotated binary masks
- Available at [garrying/VMD-D](https://huggingface.co/datasets/garrying/VMD-D)

## Citation

```bibtex
@InProceedings{Lin_2023_CVPR,
  author    = {Lin, Jiaying and Tan, Xin and Lau, Rynson W.H.},
  title     = {Learning To Detect Mirrors From Videos via Dual Correspondences},
  booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
  month     = {June},
  year      = {2023},
  pages     = {9109-9118}
}
```

## License

Non-commercial use only — [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/).