VRT: A Video Restoration Transformer

Jingyun Liang, Jiezhang Cao, Yuchen Fan, Kai Zhang, Rakesh Ranjan, Yawei Li, Radu Timofte, Luc Van Gool

Computer Vision Lab, ETH Zurich & Meta Inc.

arxiv | supplementary | pretrained models | visual results

This repository is the official PyTorch implementation of "VRT: A Video Restoration Transformer" (arxiv, supp, pretrained models, visual results). VRT achieves state-of-the-art performance in

• video SR (REDS, Vimeo90K, Vid4, UDM10)                            :heart_eyes: + 0.33~0.51dB :heart_eyes:
• video deblurring (GoPro, DVD, REDS)                                 :heart_eyes:     + 1.47~2.15dB     :heart_eyes:
• video denoising (DAVIS, Set8)                                         :heart_eyes:         + 1.56~2.16dB         :heart_eyes:
• video frame interpolation (Vimeo90K, UCF101, DAVIS)     :heart_eyes:     + 0.28~0.45dB     :heart_eyes:
• space-time video SR (Vimeo90K, Vid4)                                  :heart_eyes: + 0.26~1.03dB :heart_eyes:

:rocket: :rocket: :rocket: News:

• Oct. 4, 2022: See the Recurrent Video Restoration Transformer (RVRT, NeurlPS2022) with more balanced model size, testing memory and runtime.
• Jun. 15, 2022: Add results on video frame interpolation and space-time video SR.
• Jan. 26, 2022: See our previous works on

Topic	Title	Badge
transformer-based image restoration	SwinIR: Image Restoration Using Swin Transformer:fire:
real-world image SR	Designing a Practical Degradation Model for Deep Blind Image Super-Resolution, ICCV2021
normalizing flow-based image SR and image rescaling	Hierarchical Conditional Flow: A Unified Framework for Image Super-Resolution and Image Rescaling, ICCV2021
blind image SR	Mutual Affine Network for Spatially Variant Kernel Estimation in Blind Image Super-Resolution, ICCV2021
blind image SR	Flow-based Kernel Prior with Application to Blind Super-Resolution, CVPR2021

Video restoration (e.g., video super-resolution) aims to restore high-quality frames from low-quality frames. Different from single image restoration, video restoration generally requires to utilize temporal information from multiple adjacent but usually misaligned video frames. Existing deep methods generally tackle with this by exploiting a sliding window strategy or a recurrent architecture, which either is restricted by frame-by-frame restoration or lacks long-range modelling ability. In this paper, we propose a Video Restoration Transformer (VRT) with parallel frame prediction and long-range temporal dependency modelling abilities. More specifically, VRT is composed of multiple scales, each of which consists of two kinds of modules: temporal mutual self attention (TMSA) and parallel warping. TMSA divides the video into small clips, on which mutual attention is applied for joint motion estimation, feature alignment and feature fusion, while self-attention is used for feature extraction. To enable cross-clip interactions, the video sequence is shifted for every other layer. Besides, parallel warping is used to further fuse information from neighboring frames by parallel feature warping. Experimental results on three tasks, including video super-resolution, video deblurring and video denoising, demonstrate that VRT outperforms the state-of-the-art methods by large margins (up to 2.16 dB) on nine benchmark datasets.

Contents

1. Requirements
2. Quick Testing
3. Training
4. Results
5. Citation
6. License and Acknowledgement

Requirements

• Python 3.8, PyTorch >= 1.9.1
• Requirements: see requirements.txt
• Platforms: Ubuntu 18.04, cuda-11.1

Quick Testing

Following commands will download pretrained models and test datasets automatically (except Vimeo-90K testing set). If out-of-memory, try to reduce --tile at the expense of slightly decreased performance.

You can also try to test it on Colab , but the results may be slightly different due to --tile difference.

# download code
git clone https://github.com/JingyunLiang/VRT
cd VRT
pip install -r requirements.txt

# 001, video sr trained on REDS (6 frames), tested on REDS4
python main_test_vrt.py --task 001_VRT_videosr_bi_REDS_6frames --folder_lq testsets/REDS4/sharp_bicubic --folder_gt testsets/REDS4/GT --tile 40 128 128 --tile_overlap 2 20 20

# 002, video sr trained on REDS (16 frames), tested on REDS4
python main_test_vrt.py --task 002_VRT_videosr_bi_REDS_16frames --folder_lq testsets/REDS4/sharp_bicubic --folder_gt testsets/REDS4/GT --tile 40 128 128 --tile_overlap 2 20 20

# 003, video sr trained on Vimeo (bicubic), tested on Vid4 and Vimeo
python main_test_vrt.py --task 003_VRT_videosr_bi_Vimeo_7frames --folder_lq testsets/Vid4/BIx4 --folder_gt testsets/Vid4/GT --tile 32 128 128 --tile_overlap 2 20 20
python main_test_vrt.py --task 003_VRT_videosr_bi_Vimeo_7frames --folder_lq testsets/vimeo90k/vimeo_septuplet_matlabLRx4/sequences --folder_gt testsets/vimeo90k/vimeo_septuplet/sequences --tile 8 0 0 --tile_overlap 0 20 20

# 004, video sr trained on Vimeo (blur-downsampling), tested on Vid4, UDM10 and Vimeo
python main_test_vrt.py --task 004_VRT_videosr_bd_Vimeo_7frames --folder_lq testsets/Vid4/BDx4 --folder_gt testsets/Vid4/GT --tile 32 128 128 --tile_overlap 2 20 20
python main_test_vrt.py --task 004_VRT_videosr_bd_Vimeo_7frames --folder_lq testsets/UDM10/BDx4 --folder_gt testsets/UDM10/GT --tile 32 128 128 --tile_overlap 2 20 20
python main_test_vrt.py --task 004_VRT_videosr_bd_Vimeo_7frames --folder_lq testsets/vimeo90k/vimeo_septuplet_BDLRx4/sequences --folder_gt testsets/vimeo90k/vimeo_septuplet/sequences --tile 8 0 0 --tile_overlap 0 20 20

# 005, video deblurring trained and tested on DVD
python main_test_vrt.py --task 005_VRT_videodeblurring_DVD --folder_lq testsets/DVD10/test_GT_blurred --folder_gt testsets/DVD10/test_GT --tile 12 256 256 --tile_overlap 2 20 20

# 006, video deblurring trained and tested on GoPro
python main_test_vrt.py --task 006_VRT_videodeblurring_GoPro --folder_lq testsets/GoPro11/test_GT_blurred --folder_gt testsets/GoPro11/test_GT --tile 18 192 192 --tile_overlap 2 20 20

# 007, video deblurring trained on REDS, tested on REDS4
python main_test_vrt.py --task 007_VRT_videodeblurring_REDS --folder_lq testsets/REDS4/blur --folder_gt testsets/REDS4/GT --tile 12 256 256 --tile_overlap 2 20 20

# 008, video denoising trained on DAVIS (noise level 0-50), tested on Set8 and DAVIS
python main_test_vrt.py --task 008_VRT_videodenoising_DAVIS --sigma 10 --folder_lq testsets/Set8 --folder_gt testsets/Set8 --tile 12 256 256 --tile_overlap 2 20 20
python main_test_vrt.py --task 008_VRT_videodenoising_DAVIS --sigma 10  --folder_lq testsets/DAVIS-test --folder_gt testsets/DAVIS-test --tile 12 256 256 --tile_overlap 2 20 20

# 009, video frame interpolation trained on Vimeo (single frame interpolation), tested on Viemo, UCF101 and DAVIS-train
python main_test_vrt.py --task 009_VRT_videofi_Vimeo_4frames --folder_lq testsets/vimeo90k/vimeo_septuplet/sequences --folder_gt testsets/vimeo90k/vimeo_septuplet/sequences --tile 0 0 0 --tile_overlap 0 0 0
python main_test_vrt.py --task 009_VRT_videofi_Vimeo_4frames --folder_lq testsets/UCF101 --folder_gt testsets/UCF101 --tile 0 0 0 --tile_overlap 0 0 0
python main_test_vrt.py --task 009_VRT_videofi_Vimeo_4frames --folder_lq testsets/DAVIS-train --folder_gt testsets/DAVIS-train --tile 0 256 256 --tile_overlap 0 20 20

# 010, space-time video sr, using pretrained models from 003 and 009, tested on Vid4 and Viemo
# Please refer to 003 and 009

# test on your own datasets (an example)
python main_test_vrt.py --task 001_VRT_videosr_bi_REDS_6frames --folder_lq testsets/your/own --tile 40 128 128 --tile_overlap 2 20 20

All visual results of VRT can be downloaded here.

Training

The training and testing sets are as follows (see the supplementary for a detailed introduction of all datasets). For better I/O speed, use create_lmdb.py to convert .png datasets to .lmdb datasets.

Note: You do NOT need to prepare the datasets if you just want to test the model. main_test_vrt.py will download the testing set automaticaly.

The training code is at KAIR.

Results

We achieved state-of-the-art performance on video SR, video deblurring and video denoising. Detailed results can be found in the paper.

Video Super-Resolution

Video Deblurring

Video Denoising

Video Frame Interpolation

Space-Time Video Super-Resolution

Citation

@article{liang2022vrt,
    title={VRT: A Video Restoration Transformer},
    author={Liang, Jingyun and Cao, Jiezhang and Fan, Yuchen and Zhang, Kai and Ranjan, Rakesh and Li, Yawei and Timofte, Radu and Van Gool, Luc},
    journal={arXiv preprint arXiv:2201.12288},
    year={2022}
}

License and Acknowledgement

This project is released under the CC-BY-NC license. We refer to codes from KAIR, BasicSR, Video Swin Transformer and mmediting. Thanks for their awesome works. The majority of VRT is licensed under CC-BY-NC, however portions of the project are available under separate license terms: KAIR is licensed under the MIT License, BasicSR, Video Swin Transformer and mmediting are licensed under the Apache 2.0 license.