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Image restoration algorithms such as super resolution (SR) are indispensable pre-processing modules for object detection in low quality images. Most of these algorithms assume the degradation is fixed and known a priori. However, in…

Computer Vision and Pattern Recognition · Computer Science 2022-08-08 Ziteng Cui , Yingying Zhu , Lin Gu , Guo-Jun Qi , Xiaoxiao Li , Renrui Zhang , Zenghui Zhang , Tatsuya Harada

The capabilities of super-resolution reconstruction (SRR)---techniques for enhancing image spatial resolution---have been recently improved significantly by the use of deep convolutional neural networks. Commonly, such networks are learned…

Computer Vision and Pattern Recognition · Computer Science 2019-06-18 Michal Kawulok , Szymon Piechaczek , Krzysztof Hrynczenko , Pawel Benecki , Daniel Kostrzewa , Jakub Nalepa

Methods based on convolutional neural network (CNN) have demonstrated tremendous improvements on single image super-resolution. However, the previous methods mainly restore images from one single area in the low resolution (LR) input, which…

Computer Vision and Pattern Recognition · Computer Science 2017-05-16 Xiaoyi Jia , Xiangmin Xu , Bolun Cai , Kailing Guo

Surveillance scenarios are prone to several problems since they usually involve low-resolution footage, and there is no control of how far the subjects may be from the camera in the first place. This situation is suitable for the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-27 Angelo G. Menezes

Image restoration algorithms such as super resolution (SR) are indispensable pre-processing modules for object detection in degraded images. However, most of these algorithms assume the degradation is fixed and known a priori. When the real…

Image and Video Processing · Electrical Eng. & Systems 2022-01-10 Ziteng Cui , Yingying Zhu , Lin Gu , Guo-Jun Qi , Xiaoxiao Li , Peng Gao , Zenghui Zhang , Tatsuya Harada

Single image super-resolution (SISR), which aims to reconstruct a high-resolution (HR) image from a low-resolution (LR) observation, has been an active research topic in the area of image processing in recent decades. Particularly, deep…

Image and Video Processing · Electrical Eng. & Systems 2021-03-04 Honggang Chen , Xiaohai He , Linbo Qing , Yuanyuan Wu , Chao Ren , Ce Zhu

Deep convolutional neural networks (DCNNs) have recently demonstrated high-quality results in single-image super-resolution (SR). DCNNs often suffer from over-parametrization and large amounts of redundancy, which results in inefficient…

Computer Vision and Pattern Recognition · Computer Science 2018-12-18 Yinglan Ma , Hongyu Xiong , Zhe Hu , Lizhuang Ma

Super-resolution (SR) techniques have made major advances in reconstructing high-resolution images from low-resolution inputs. The increased resolution provides visual enhancement and utility for monitoring tasks. In particular, SR has been…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Zhili Li , Kangyang Chai , Zhihao Wang , Xiaowei Jia , Yanhua Li , Gengchen Mai , Sergii Skakun , Dinesh Manocha , Yiqun Xie

Currently, there are two popular approaches for addressing real-world image super-resolution problems: degradation-estimation-based and blind-based methods. However, degradation-estimation-based methods may be inaccurate in estimating the…

Computer Vision and Pattern Recognition · Computer Science 2023-05-31 Axi Niu , Kang Zhang , Trung X. Pham , Pei Wang , Jinqiu Sun , In So Kweon , Yanning Zhang

Existing diffusion-based super-resolution approaches often exhibit semantic ambiguities due to inaccuracies and incompleteness in their text conditioning, coupled with the inherent tendency for cross-attention to divert towards irrelevant…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Chen Chen , Majid Abdolshah , Violetta Shevchenko , Hongdong Li , Chang Xu , Pulak Purkait

In real-world scenarios, image recognition tasks, such as semantic segmentation and object detection, often pose greater challenges due to the lack of information available within low-resolution (LR) content. Image super-resolution (SR) is…

Computer Vision and Pattern Recognition · Computer Science 2024-04-05 Jaeha Kim , Junghun Oh , Kyoung Mu Lee

The most of CNN based super-resolution (SR) methods assume that the degradation is known (\eg, bicubic). These methods will suffer a severe performance drop when the degradation is different from their assumption. Therefore, some approaches…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Bin Xia , Yapeng Tian , Yulun Zhang , Yucheng Hang , Wenming Yang , Qingmin Liao

Deep learning-based image super-resolution (DL-SR) has shown great promise in medical imaging applications. To date, most of the proposed methods for DL-SR have only been assessed by use of traditional measures of image quality (IQ) that…

Image and Video Processing · Electrical Eng. & Systems 2021-07-07 Xiaohui Zhang , Varun A. Kelkar , Jason Granstedt , Hua Li , Mark A. Anastasio

In image Super-Resolution (SR), relying on large datasets for training is a double-edged sword. While offering rich training material, they also demand substantial computational and storage resources. In this work, we analyze dataset…

Image and Video Processing · Electrical Eng. & Systems 2024-06-11 Brian B. Moser , Federico Raue , Andreas Dengel

High resolution Magnetic Resonance (MR) images are desired for accurate diagnostics. In practice, image resolution is restricted by factors like hardware and processing constraints. Recently, deep learning methods have been shown to produce…

Image and Video Processing · Electrical Eng. & Systems 2020-01-08 Venkateswararao Cherukuri , Tiantong Guo , Steve. J. Schiff , Vishal Monga

Face super-resolution (FSR), also known as face hallucination, which is aimed at enhancing the resolution of low-resolution (LR) face images to generate high-resolution (HR) face images, is a domain-specific image super-resolution problem.…

Computer Vision and Pattern Recognition · Computer Science 2021-09-02 Junjun Jiang , Chenyang Wang , Xianming Liu , Jiayi Ma

Depth super-resolution (DSR) aims to recover a high-resolution (HR) depth map from its low-resolution (LR) counterpart. With color image guidance, this task is typically formulated as learning the residual between HR and LR in a…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Zhiqiang Yan , Zhengxue Wang , Jian Yang , Gim Hee Lee

Reference-based Image Super-Resolution (RefSR) aims to restore a low-resolution (LR) image by utilizing the semantic and texture information from an additional reference high-resolution (reference HR) image. Existing diffusion-based RefSR…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Zhenning Shi , Zizheng Yan , Yuhang Yu , Clara Xue , Jingyu Zhuang , Qi Zhang , Jinwei Chen , Tao Li , Qingnan Fan

High Resolution (HR) medical images provide rich anatomical structure details to facilitate early and accurate diagnosis. In MRI, restricted by hardware capacity, scan time, and patient cooperation ability, isotropic 3D HR image acquisition…

Image and Video Processing · Electrical Eng. & Systems 2022-12-01 Qing Wu , Yuwei Li , Yawen Sun , Yan Zhou , Hongjiang Wei , Jingyi Yu , Yuyao Zhang

Image Super-Resolution (SR) is an important class of image processing techniques to enhance the resolution of images and videos in computer vision. Recent years have witnessed remarkable progress of image super-resolution using deep…

Computer Vision and Pattern Recognition · Computer Science 2020-02-11 Zhihao Wang , Jian Chen , Steven C. H. Hoi