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High-resolution (HR) magnetic resonance images (MRI) provide detailed anatomical information important for clinical application and quantitative image analysis. However, HR MRI conventionally comes at the cost of longer scan time, smaller…

计算机视觉与模式识别 · 计算机科学 2018-06-12 Yuhua Chen , Feng Shi , Anthony G. Christodoulou , Zhengwei Zhou , Yibin Xie , Debiao Li

Multi-contrast MRI sequences allow for the acquisition of images with varying tissue contrast within a single scan. The resulting multi-contrast images can be used to extract quantitative information on tissue microstructure. To make such…

Multilook processing is a widely used speckle reduction approach in synthetic aperture radar (SAR) imaging. Conventionally, it is achieved by incoherently summing of some independent low-resolution images formulated from overlapping…

信息论 · 计算机科学 2013-10-29 Jian Fang , Zongben Xu , Bingchen Zhang , Wen Hong , Yirong Wu

High-resolution imagery is often hindered by limitations in sensor technology, atmospheric conditions, and costs. Such challenges occur in satellite remote sensing, but also with handheld cameras, such as our smartphones. Hence,…

计算机视觉与模式识别 · 计算机科学 2026-05-15 Sander Riisøen Jyhne , Christian Igel , Morten Goodwin , Per-Arne Andersen , Serge Belongie , Nico Lang

Recently, satellites with high temporal resolution have fostered wide attention in various practical applications. Due to limitations of bandwidth and hardware cost, however, the spatial resolution of such satellites is considerably low,…

计算机视觉与模式识别 · 计算机科学 2021-05-25 Jiaming Wang , Zhenfeng Shao , Tao Lu , Xiao Huang , Ruiqian Zhang , Yu Wang

Sparse learning has been shown to be effective in solving many real-world problems. Finding sparse representations is a fundamentally important topic in many fields of science including signal processing, computer vision, genome study and…

计算机视觉与模式识别 · 计算机科学 2018-07-30 Jun Cheng

Super-resolution (SR) is a technique that allows increasing the resolution of a given image. Having applications in many areas, from medical imaging to consumer electronics, several SR methods have been proposed. Currently, the best…

计算机视觉与模式识别 · 计算机科学 2019-12-02 Marija Vella , João F. C. Mota

Current CNN-based super-resolution (SR) methods process all locations equally with computational resources being uniformly assigned in space. However, since missing details in low-resolution (LR) images mainly exist in regions of edges and…

计算机视觉与模式识别 · 计算机科学 2021-04-02 Longguang Wang , Xiaoyu Dong , Yingqian Wang , Xinyi Ying , Zaiping Lin , Wei An , Yulan Guo

In this paper, we consider two challenging issues in reference-based super-resolution (RefSR), (i) how to choose a proper reference image, and (ii) how to learn real-world RefSR in a self-supervised manner. Particularly, we present a novel…

图像与视频处理 · 电气工程与系统科学 2022-07-21 Zhilu Zhang , Ruohao Wang , Hongzhi Zhang , Yunjin Chen , Wangmeng Zuo

The objective of image super-resolution is to reconstruct a high-resolution (HR) image with the prior knowledge from one or several low-resolution (LR) images. However, in the real world, due to the limited complementary information, the…

图像与视频处理 · 电气工程与系统科学 2024-12-16 Jing Sun , Qiangqiang Yuan , Huanfeng Shen , Jie Li , Liangpei Zhang

High resolution magnetic resonance (MR) imaging is desirable in many clinical applications due to its contribution to more accurate subsequent analyses and early clinical diagnoses. Single image super resolution (SISR) is an effective and…

计算机视觉与模式识别 · 计算机科学 2019-09-17 Xiaole Zhao , Yulun Zhang , Tao Zhang , Xueming Zou

Limited by the cost and technology, the resolution of depth map collected by depth camera is often lower than that of its associated RGB camera. Although there have been many researches on RGB image super-resolution (SR), a major problem…

计算机视觉与模式识别 · 计算机科学 2020-11-25 Chuhua Xian , Kun Qian , Zitian Zhang , Charlie C. L. Wang

In this paper, the problem of Magnetic Resonance (MR) image reconstruction from partial Fourier samples has been considered. To this aim, we leverage the evidence that MR images are sparser than their zero-filled reconstructed ones from…

信息论 · 计算机科学 2015-08-19 Fateme Ghayem , Farokh Marvasti

This paper presents a variational based approach to fusing hyperspectral and multispectral images. The fusion process is formulated as an inverse problem whose solution is the target image assumed to live in a much lower dimensional…

计算机视觉与模式识别 · 计算机科学 2023-07-19 Qi Wei , José Bioucas-Dias , Nicolas Dobigeon , Jean-Yves Tourneret

Medical image super-resolution (SR) is an active research area that has many potential applications, including reducing scan time, bettering visual understanding, increasing robustness in downstream tasks, etc. However, applying…

图像与视频处理 · 电气工程与系统科学 2022-10-12 Cheng Peng , S. Kevin Zhou , Rama Chellappa

Physics-driven deep learning (PD-DL) models have proven to be a powerful approach for improved reconstruction of rapid MRI scans. In order to train these models in scenarios where fully-sampled reference data is unavailable, self-supervised…

图像与视频处理 · 电气工程与系统科学 2025-09-08 Yaşar Utku Alçalar , Mehmet Akçakaya

Self-supervised methods have recently proved to be nearly as effective as supervised ones in various imaging inverse problems, paving the way for learning-based approaches in scientific and medical imaging applications where ground truth…

图像与视频处理 · 电气工程与系统科学 2026-01-30 Jérémy Scanvic , Mike Davies , Patrice Abry , Julián Tachella

Single image super resolution (SR), which refers to reconstruct a higher-resolution (HR) image from the observed low-resolution (LR) image, has received substantial attention due to its tremendous application potentials. Despite the…

计算机视觉与模式识别 · 计算机科学 2017-08-01 Yukai Shi , Keze Wang , Chongyu Chen , Li Xu , Liang Lin

The diagnostic quality of computed tomography (CT) scans is usually restricted by the induced patient dose, scan speed, and image quality. Sparse-angle tomographic scans reduce radiation exposure and accelerate data acquisition, but suffer…

计算机视觉与模式识别 · 计算机科学 2023-08-10 Fabian Wagner , Mareike Thies , Noah Maul , Laura Pfaff , Oliver Aust , Sabrina Pechmann , Christopher Syben , Andreas Maier

Depth estimation from a single image is an active research topic in computer vision. The most accurate approaches are based on fully supervised learning models, which rely on a large amount of dense and high-resolution (HR) ground-truth…

计算机视觉与模式识别 · 计算机科学 2021-09-27 Jialei Xu , Yuanchao Bai , Xianming Liu , Junjun Jiang , Xiangyang Ji