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In real-world applications, such as sharing photos on social media platforms, images are always not only sub-sampled but also heavily compressed thus often containing various artefacts. Simple methods for enhancing the resolution of such…

Image and Video Processing · Electrical Eng. & Systems 2022-11-23 Hongming Luo , Fei Zhou , Guangsen Liao , Guoping Qiu

Non-local self-similarity in natural images has been well studied as an effective prior in image restoration. However, for single image super-resolution (SISR), most existing deep non-local methods (e.g., non-local neural networks) only…

Computer Vision and Pattern Recognition · Computer Science 2020-10-21 Shangchen Zhou , Jiawei Zhang , Wangmeng Zuo , Chen Change Loy

In this paper, we propose an efficient self-supervised arbitrary-scale super-resolution (SR) framework to reconstruct isotropic magnetic resonance (MR) images from anisotropic MRI inputs without involving external training data. The…

Image and Video Processing · Electrical Eng. & Systems 2023-05-03 Haonan Zhang , Yuhan Zhang , Qing Wu , Jiangjie Wu , Zhiming Zhen , Feng Shi , Jianmin Yuan , Hongjiang Wei , Chen Liu , Yuyao Zhang

Recent progress in single-image super-resolution (SISR) has achieved remarkable performance, yet the computational costs of these methods remain a challenge for deployment on resource-constrained devices. In particular, transformer-based…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Gang Wu , Junjun Jiang , Junpeng Jiang , Xianming Liu

In recent times, the need for effective super-resolution (SR) techniques has surged, especially for large-scale images ranging 2K to 8K resolutions. For DNN-based SISR, decomposing images into overlapping patches is typically necessary due…

Computer Vision and Pattern Recognition · Computer Science 2024-08-01 Jinho Jeong , Jinwoo Kim , Younghyun Jo , Seon Joo Kim

Image Super-Resolution (SR) provides a promising technique to enhance the image quality of low-resolution optical sensors, facilitating better-performing target detection and autonomous navigation in a wide range of robotics applications.…

Computer Vision and Pattern Recognition · Computer Science 2020-12-08 Fan Wang , Jiangxin Yang , Yanlong Cao , Yanpeng Cao , Michael Ying Yang

Conventional social media platforms usually downscale the HR images to restrict their resolution to a specific size for saving transmission/storage cost, which leads to the super-resolution (SR) being highly ill-posed. Recent invertible…

Computer Vision and Pattern Recognition · Computer Science 2022-03-10 Jinbo Xing , Wenbo Hu , Tien-Tsin Wong

While super-resolution (SR) methods based on diffusion models exhibit promising results, their practical application is hindered by the substantial number of required inference steps. Recent methods utilize degraded images in the initial…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Yufei Wang , Wenhan Yang , Xinyuan Chen , Yaohui Wang , Lanqing Guo , Lap-Pui Chau , Ziwei Liu , Yu Qiao , Alex C. Kot , Bihan Wen

For Image Super-Resolution (SR), it is common to train and evaluate scale-specific models composed of an encoder and upsampler for each targeted scale. Consequently, many SR studies encounter substantial training times and complex…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Dongheon Lee , Seokju Yun , Youngmin Ro

When a high-resolution (HR) image is degraded into a low-resolution (LR) image, the image loses some of the existing information. Consequently, multiple HR images can correspond to the LR image. Most of the existing methods do not consider…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Hanbyel Cho , Yekang Lee , Jaemyung Yu , Junmo Kim

Single image super-resolution (SR) is an established pixel-level vision task aimed at reconstructing a high-resolution image from its degraded low-resolution counterpart. Despite the notable advancements achieved by leveraging deep neural…

Image and Video Processing · Electrical Eng. & Systems 2024-05-28 Shijie Liu , Kang Yan , Feiwei Qin , Changmiao Wang , Ruiquan Ge , Kai Zhang , Jie Huang , Yong Peng , Jin Cao

Confocal fluorescence microscopy is one of the most accessible and widely used imaging techniques for the study of biological processes at the cellular and subcellular levels. Scanning confocal microscopy allows the capture of high-quality…

Image and Video Processing · Electrical Eng. & Systems 2024-11-01 Soufiane Belharbi , Mara KM Whitford , Phuong Hoang , Shakeeb Murtaza , Luke McCaffrey , Eric Granger

In spite of the success on benchmark datasets, most advanced face super-resolution models perform poorly in real scenarios since the remarkable domain gap between the real images and the synthesized training pairs. To tackle this problem,…

Computer Vision and Pattern Recognition · Computer Science 2021-12-21 Xianfang Zeng , Jiangning Zhang , Liang Liu , Guangzhong Tian , Yong Liu

Super-resolution (SR), the process of obtaining high-resolution images from one or more low-resolution observations of the same scene, has been a very popular topic of research in the last few decades in both signal processing and image…

Image and Video Processing · Electrical Eng. & Systems 2022-02-25 Bahattin Can Maral

Conventional supervised super-resolution (SR) approaches are trained with massive external SR datasets but fail to exploit desirable properties of the given test image. On the other hand, self-supervised SR approaches utilize the internal…

Computer Vision and Pattern Recognition · Computer Science 2020-08-26 Seobin Park , Jinsu Yoo , Donghyeon Cho , Jiwon Kim , Tae Hyun Kim

Single-image super-resolution (SISR) remains challenging due to the inherent difficulty of recovering fine-grained details and preserving perceptual quality from low-resolution inputs. Existing methods often rely on limited image priors,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Kangfu Mei , Hossein Talebi , Mojtaba Ardakani , Vishal M. Patel , Peyman Milanfar , Mauricio Delbracio

Face super-resolution (FSR) is a critical technique for enhancing low-resolution facial images and has significant implications for face-related tasks. However, existing FSR methods are limited by fixed up-sampling scales and sensitivity to…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Yi Ting Tsai , Yu Wei Chen , Hong-Han Shuai , Ching-Chun Huang

Diffusion models have become a leading paradigm for image super-resolution (SR), but existing methods struggle to guarantee both the high-frequency perceptual quality and the low-frequency structural fidelity of generated images. Although…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Hexin Zhang , Dong Li , Jie Huang , Bingzhou Wang , Xueyang Fu , Zhengjun Zha

In this work, we propose using a unified representation, termed Factorized Features, for low-level vision tasks, where we test on Single Image Super-Resolution (SISR) and \textbf{Image Compression}. Motivated by the shared principles…

Image and Video Processing · Electrical Eng. & Systems 2025-11-04 Yang-Che Sun , Cheng Yu Yeo , Ernie Chu , Jun-Cheng Chen , Yu-Lun Liu

A light-weight super-resolution (LSR) method from a single image targeting mobile applications is proposed in this work. LSR predicts the residual image between the interpolated low-resolution (ILR) and high-resolution (HR) images using a…

Image and Video Processing · Electrical Eng. & Systems 2023-02-28 Wei Wang , Xuejing Lei , Yueru Chen , Ming-Sui Lee , C. -C. Jay Kuo