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Image restoration is the task of recovering a clean image from a degraded version. In most cases, the degradation is spatially varying, and it requires the restoration network to both localize and restore the affected regions. In this…

Image and Video Processing · Electrical Eng. & Systems 2022-01-04 Maitreya Suin , Kuldeep Purohit , A. N. Rajagopalan

Restoration of images contaminated by different adverse weather conditions such as fog, snow, and rain is a challenging task due to the varying nature of the weather conditions. Most of the existing methods focus on any one particular…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 Kotha Kartheek , Lingamaneni Gnanesh Chowdary , Snehasis Mukherjee

Despite the significant progress made by all-in-one models in universal image restoration, existing methods suffer from a generalization bottleneck in real-world scenarios, as they are mostly trained on small-scale synthetic datasets with…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Hao Li , Xiang Chen , Jiangxin Dong , Jinhui Tang , Jinshan Pan

It is well-known that in inverse problems, end-to-end trained networks overfit the degradation model seen in the training set, i.e., they do not generalize to other types of degradations well. Recently, an approach to first map images…

Image and Video Processing · Electrical Eng. & Systems 2021-06-02 Cansu Korkmaz , A. Murat Tekalp , Zafer Dogan

Many studies have been conducted so far on image restoration, the problem of restoring a clean image from its distorted version. There are many different types of distortion which affect image quality. Previous studies have focused on…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Masanori Suganuma , Xing Liu , Takayuki Okatani

Despite the great advances in visual recognition, it has been witnessed that recognition models trained on clean images of common datasets are not robust against distorted images in the real world. To tackle this issue, we present a…

Computer Vision and Pattern Recognition · Computer Science 2020-07-27 Taeyoung Son , Juwon Kang , Namyup Kim , Sunghyun Cho , Suha Kwak

Image rescaling is a commonly used bidirectional operation, which first downscales high-resolution images to fit various display screens or to be storage- and bandwidth-friendly, and afterward upscales the corresponding low-resolution…

Image and Video Processing · Electrical Eng. & Systems 2022-10-11 Mingqing Xiao , Shuxin Zheng , Chang Liu , Zhouchen Lin , Tie-Yan Liu

Deep learning based single image super-resolution models have been widely studied and superb results are achieved in upscaling low-resolution images with fixed scale factor and downscaling degradation kernel. To improve real world…

Image and Video Processing · Electrical Eng. & Systems 2022-03-09 Zhihong Pan , Baopu Li , Dongliang He , Mingde Yao , Wenhao Wu , Tianwei Lin , Xin Li , Errui Ding

Adaptive image restoration models can restore images with different degradation levels at inference time without the need to retrain the model. We present an approach that is highly accurate and allows a significant reduction in the number…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Shai Aharon , Gil Ben-Artzi

Image restoration aims to recover a high-quality clean image from its degraded version. Recent progress in image restoration has demonstrated the effectiveness of All-in-One image restoration models in addressing various unknown…

Computer Vision and Pattern Recognition · Computer Science 2024-11-20 Jin Cao , Yi Cao , Li Pang , Deyu Meng , Xiangyong Cao

The employment of convolutional neural networks has achieved unprecedented performance in the task of image restoration for a variety of degradation factors. However, high-performance networks have been specifically designed for a single…

Computer Vision and Pattern Recognition · Computer Science 2020-01-22 Xing Liu , Masanori Suganuma , Xiyang Luo , Takayuki Okatani

Image restoration is a fundamental problem that involves recovering a high-quality clean image from its degraded observation. All-In-One image restoration models can effectively restore images from various types and levels of degradation…

Computer Vision and Pattern Recognition · Computer Science 2024-09-27 Marcos V. Conde , Gregor Geigle , Radu Timofte

Ultra-high-definition (UHD) image restoration aims to specifically solve the problem of quality degradation in ultra-high-resolution images. Recent advancements in this field are predominantly driven by deep learning-based innovations,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Liyan Wang , Weixiang Zhou , Cong Wang , Kin-Man Lam , Zhixun Su , Jinshan Pan

We develop a novel transfer learning framework to tackle the challenge of limited training data in image reconstruction problems. The proposed framework consists of two training steps, both of which are formed as bi-level optimizations. In…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Yunmei Chen , Chi Ding , Xiaojing Ye

We introduce SUPIR (Scaling-UP Image Restoration), a groundbreaking image restoration method that harnesses generative prior and the power of model scaling up. Leveraging multi-modal techniques and advanced generative prior, SUPIR marks a…

Computer Vision and Pattern Recognition · Computer Science 2024-04-04 Fanghua Yu , Jinjin Gu , Zheyuan Li , Jinfan Hu , Xiangtao Kong , Xintao Wang , Jingwen He , Yu Qiao , Chao Dong

In endoscopic surgery, a clear and high-quality visual field is critical for surgeons to make accurate intraoperative decisions. However, persistent visual degradation, including smoke generated by energy devices, lens fogging from thermal…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Jialun Pei , Diandian Guo , Donghui Yang , Zhixi Li , Yuxin Feng , Long Ma , Bo Du , Pheng-Ann Heng

Video imaging is often affected by complex degradations such as blur, noise, and compression artifacts. Traditional restoration methods follow a "single-task single-model" paradigm, resulting in poor generalization and high computational…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Shuning Sun , Yu Zhang , Chen Wu , Dianjie Lu , Dianjie Lu , Guijuan Zhan , Yang Weng , Zhuoran Zheng

High-resolution digital images are usually downscaled to fit various display screens or save the cost of storage and bandwidth, meanwhile the post-upscaling is adpoted to recover the original resolutions or the details in the zoom-in…

Image and Video Processing · Electrical Eng. & Systems 2020-05-13 Mingqing Xiao , Shuxin Zheng , Chang Liu , Yaolong Wang , Di He , Guolin Ke , Jiang Bian , Zhouchen Lin , Tie-Yan Liu

This paper presents a new variational inference framework for image restoration and a convolutional neural network (CNN) structure that can solve the restoration problems described by the proposed framework. Earlier CNN-based image…

Image and Video Processing · Electrical Eng. & Systems 2022-07-20 Jae Woong Soh , Nam Ik Cho

Despite the significant progress in diffusion prior-based image restoration, most existing methods apply uniform processing to the entire image, lacking the capability to perform region-customized image restoration according to user…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Shuaizheng Liu , Jianqi Ma , Lingchen Sun , Xiangtao Kong , Lei Zhang