Lip2Vec: Efficient and Robust Visual Speech Recognition via Latent-to-Latent Visual to Audio Representation Mapping

This repository contains a PyTorch implementation and pretrained models for Lip2Vec, a novel method for Visual Speech Recognition. For a deeper understanding of the method, refer to the paper Lip2Vec: Efficient and Robust Visual Speech Recognition via Latent-to-Latent Visual to Audio Representation Mapping.

Lip2Vec Inference:

The video representations computed by the video encoder are input to our learned prior network, which synthesizes them to audio representations. These representations are then passed through the encoder and linear layer of the Wav2vec2.0 model to predict the text. Note that audio representations are not used at test time.

Pretrained models

arch	params	WER	Video backbone	download
Lip2Vec-Large Low-Ressources	43M	30.2	Av-HuBERT Large	weights
Lip2Vec-Base Low-Ressources	43M	42.6	Av-HuBERT Base	weights
Lip2Vec-Large High-Ressources	76M	26.0	Av-HuBERT Large	weights
Lip2Vec-Base High-Ressources	76M	34.9	Av-HuBERT Base	weights

Setup

clone the repo:

git clone https://github.com/YasserdahouML/Lip2Vec.git
cd Lip2Vec

Set up environment:

conda create -y -n lip2vec python=3.9.5
conda activate lip2vec

clone av-hubert repo and install fairseq:

git clone https://github.com/facebookresearch/av_hubert.git
cd avhubert
git submodule init
git submodule update
cd fairseq
pip install --editable ./

Install dependencies:

pip install -r requirements.txt

Download AV-Hubert weights :

For downloading AV-HuBERT weights, use this repo. Available weights:

• AV-HuBERT Large: LRS3 + VoxCeleb2 (En), No finetuning
• AV-HuBERT Base: LRS3 + VoxCeleb2 (En), No finetuning

Inference on LRS3

Use the following command to perform inference on the LRS3 dataset.

torchrun --nproc_per_node=4 main_test.py \
    --lrs3_path=[data_path] \
    --model_path=[prior_path] \
    --hub_path=[av-hubert_path] \

arguments:

• data_path: Directory to the LRS3 test set videos
• prior_path: Path to the prior network checkpoint
• av-hubert_path: Path to the AV-Hubert weights

Acknowledgement

The repository is based on av-hubert, vsr, detr

Citation

@inproceedings{djilali2023lip2vec,
  title={Lip2Vec: Efficient and Robust Visual Speech Recognition via Latent-to-Latent Visual to Audio Representation Mapping},
  author={Djilali, Yasser Abdelaziz Dahou and Narayan, Sanath and Boussaid, Haithem and Almazrouei, Ebtessam and Debbah, Merouane},
  booktitle={Proceedings of the IEEE/CVF International Conference on Computer Vision},
  pages={13790--13801},
  year={2023}
}