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Previous approaches for blind image super-resolution (SR) have relied on degradation estimation to restore high-resolution (HR) images from their low-resolution (LR) counterparts. However, accurate degradation estimation poses significant…

Image and Video Processing · Electrical Eng. & Systems 2024-03-13 Haochen Sun , Yan Yuan , Lijuan Su , Haotian Shao

Existing unified methods typically treat multi-degradation image restoration as a multi-task learning problem. Despite performing effectively compared to single degradation restoration methods, they overlook the utilization of commonalities…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Cheng Zhang , Dong Gong , Jiumei He , Yu Zhu , Jinqiu Sun , Yanning Zhang

This paper is concerned with contrastive learning (CL) for low-level image restoration and enhancement tasks. We propose a new label-efficient learning paradigm based on residuals, residual contrastive learning (RCL), and derive an…

Computer Vision and Pattern Recognition · Computer Science 2022-04-28 Nanqing Dong , Matteo Maggioni , Yongxin Yang , Eduardo Pérez-Pellitero , Ales Leonardis , Steven McDonagh

The goal of image restoration (IR), a fundamental issue in computer vision, is to restore a high-quality (HQ) image from its degraded low-quality (LQ) observation. Multiple HQ solutions may correspond to an LQ input in this poorly posed…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Zeyu Xiao , Jiawang Bai , Zhihe Lu , Zhiwei Xiong

Image degradation caused by complex lighting conditions such as low-light and backlit scenarios is commonly encountered in real-world environments, significantly affecting image quality and downstream vision tasks. Most existing methods…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Ziang Wang , Xiaoqin Wang , Dingyi Wang , Qiang Li , Shushan Qiao

Designing single-task image restoration models for specific degradation has seen great success in recent years. To achieve generalized image restoration, all-in-one methods have recently been proposed and shown potential for multiple…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Hang Guo , Tao Dai , Yuanchao Bai , Bin Chen , Xudong Ren , Zexuan Zhu , Shu-Tao Xia

In recent years, learned image compression (LIC) methods have achieved significant performance improvements. However, obtaining a more compact latent representation and reducing the impact of quantization errors remain key challenges in the…

Image and Video Processing · Electrical Eng. & Systems 2025-02-24 Shiqi Jiang , Hui Yuan , Shuai Li , Raouf Hamzaoui , Xu Wang , Junyan Huo

Convolutional layers in Artificial Neural Networks (ANN) treat the channel features equally without feature selection flexibility. While using ANNs for image denoising in real-world applications with unknown noise distributions,…

Image and Video Processing · Electrical Eng. & Systems 2020-12-24 Huayu Li , Haiyu Wu , Xiwen Chen , Hanning Zhang , Abolfazl Razi

Removing noise from images, a.k.a image denoising, can be a very challenging task since the type and amount of noise can greatly vary for each image due to many factors including a camera model and capturing environments. While there have…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Changjin Kim , Tae Hyun Kim , Sungyong Baik

Great successes have been achieved using deep learning techniques for image super-resolution (SR) with fixed scales. To increase its real world applicability, numerous models have also been proposed to restore SR images with arbitrary scale…

Image and Video Processing · Electrical Eng. & Systems 2022-09-28 Zhihong Pan , Baopu Li , Dongliang He , Wenhao Wu , Errui Ding

Image denoising aims to restore a clean image from an observed noisy image. The model-based image denoising approaches can achieve good generalization ability over different noise levels and are with high interpretability. Learning-based…

Image and Video Processing · Electrical Eng. & Systems 2022-07-13 Jun-Jie Huang , Pier Luigi Dragotti

Recovering high-frequency details and textures from low-resolution images remains a fundamental challenge in super-resolution (SR), especially when real-world degradations are complex and unknown. While GAN-based methods enhance realism,…

Image and Video Processing · Electrical Eng. & Systems 2025-03-12 Cansu Korkmaz , Nancy Mehta , Radu Timofte

Although image restoration has advanced significantly, most existing methods target only a single type of degradation. In real-world scenarios, images often contain multiple degradations simultaneously, such as rain, noise, and haze,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Hu Gao , Xiaoning Lei , Xichen Xu , Depeng Dang , Lizhuang Ma

Transformer-based Super-Resolution (SR) methods have demonstrated superior performance compared to convolutional neural network (CNN)-based SR approaches due to their capability to capture long-range dependencies. However, their high…

Computer Vision and Pattern Recognition · Computer Science 2025-02-05 Karam Park , Jae Woong Soh , Nam Ik Cho

We propose Adaptive Integrated Layered Attention (AILA), a neural network architecture that combines dense skip connections with different mechanisms for adaptive feature reuse across network layers. We evaluate AILA on three challenging…

Machine Learning · Computer Science 2025-05-14 William Claster , Suhas KM , Dhairya Gundechia

Self-attention mechanism is the key of the Transformer but often criticized for its computation demands. Previous token pruning works motivate their methods from the view of computation redundancy but still need to load the full network and…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Sihao Lin , Pumeng Lyu , Dongrui Liu , Tao Tang , Xiaodan Liang , Andy Song , Xiaojun Chang

Vision Transformer (ViT) has shown great potential for various visual tasks due to its ability to model long-range dependency. However, ViT requires a large amount of computing resource to compute the global self-attention. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2023-04-10 Gaojie Wu , Wei-Shi Zheng , Yutong Lu , Qi Tian

In the practical applications of computed tomography imaging, the projection data may be acquired within a limited-angle range and corrupted by noises due to the limitation of scanning conditions. The noisy incomplete projection data…

Image and Video Processing · Electrical Eng. & Systems 2022-08-02 Qifeng Gao , Rui Ding , Linyuan Wang , Bin Xue , Yuping Duan

Transformer-based approaches have achieved superior performance in image restoration, since they can model long-term dependencies well. However, the limitation in capturing local information restricts their capacity to remove degradations.…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Shihao Zhou , Duosheng Chen , Jinshan Pan , Jufeng Yang

Window-based transformers have demonstrated outstanding performance in super-resolution tasks due to their adaptive modeling capabilities through local self-attention (SA). However, they exhibit higher computational complexity and inference…

Computer Vision and Pattern Recognition · Computer Science 2024-09-27 Zhenyu Hu , Wanjie Sun