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# Learning Enriched Features for Fast Image Restoration and Enhancement (TPAMI 2022)
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[Syed Waqas Zamir](https://scholar.google.es/citations?user=WNGPkVQAAAAJ&hl=en), [Aditya Arora](https://adityac8.github.io/), [Salman Khan](https://salman-h-khan.github.io/), [Munawar Hayat](https://scholar.google.com/citations?user=Mx8MbWYAAAAJ&hl=en), [Fahad Shahbaz Khan](https://scholar.google.es/citations?user=zvaeYnUAAAAJ&hl=en), [Ming-Hsuan Yang](https://scholar.google.com/citations?user=p9-ohHsAAAAJ&hl=en), and [Ling Shao](https://scholar.google.com/citations?user=z84rLjoAAAAJ&hl=en)
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[![paper](https://img.shields.io/badge/arXiv-Paper-<COLOR>.svg)](https://arxiv.org/abs/2111.09881)
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# Code will be released before April 20.
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<hr />
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> **Abstract:** *Given a degraded input image, image restoration aims to recover the missing high-quality image content. Numerous
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applications demand effective image restoration, e.g., computational photography, surveillance, autonomous vehicles, and remote
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sensing. Significant advances in image restoration have been made in recent years, dominated by convolutional neural networks
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(CNNs). The widely-used CNN-based methods typically operate either on full-resolution or on progressively low-resolution
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representations. In the former case, spatial details are preserved but the contextual information cannot be precisely encoded. In the
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latter case, generated outputs are semantically reliable but spatially less accurate. This paper presents a new architecture with a
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holistic goal of maintaining spatially-precise high-resolution representations through the entire network, and receiving complementary
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contextual information from the low-resolution representations. The core of our approach is a multi-scale residual block containing the
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following key elements: (a) parallel multi-resolution convolution streams for extracting multi-scale features, (b) information exchange
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across the multi-resolution streams, (c) non-local attention mechanism for capturing contextual information, and (d) attention based
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multi-scale feature aggregation. Our approach learns an enriched set of features that combines contextual information from multiple
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scales, while simultaneously preserving the high-resolution spatial details. Extensive experiments on six real image benchmark
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datasets demonstrate that our method, named as MIRNet-v2 , achieves state-of-the-art results for a variety of image processing tasks,
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including defocus deblurring, image denoising, super-resolution, and image enhancement.*
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<hr />
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## Citation
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If you use MIRNet_v2, please consider citing:
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@article{Zamir2022MIRNetv2,
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title={Restormer: Efficient Transformer for High-Resolution Image Restoration},
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author={Syed Waqas Zamir and Aditya Arora and Salman Khan and Munawar Hayat
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and Fahad Shahbaz Khan, Ming-Hsuan Yang, and Ling Shao},
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journal={IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI)},
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year={2022}
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}
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## Contact
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Should you have any question, please contact waqas.zamir@inceptioniai.org
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**Acknowledgment:** This code is based on the [BasicSR](https://github.com/xinntao/BasicSR) toolbox.
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## Our Related Works
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- Restormer: Efficient Transformer for High-Resolution Image Restoration, CVPR 2022. [Paper](https://arxiv.org/abs/2111.09881) | [Code](https://github.com/swz30/Restormer)
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- Multi-Stage Progressive Image Restoration, CVPR 2021. [Paper](https://arxiv.org/abs/2102.02808) | [Code](https://github.com/swz30/MPRNet)
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- Learning Enriched Features for Real Image Restoration and Enhancement, ECCV 2020. [Paper](https://arxiv.org/abs/2003.06792) | [Code](https://github.com/swz30/MIRNet)
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- CycleISP: Real Image Restoration via Improved Data Synthesis, CVPR 2020. [Paper](https://arxiv.org/abs/2003.07761) | [Code](https://github.com/swz30/CycleISP)

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