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Increasing demand for high field magnetic resonance (MR) scanner indicates the need for high-quality MR images for accurate medical diagnosis. However, cost constraints, instead, motivate a need for algorithms to enhance images from low…

计算机视觉与模式识别 · 计算机科学 2018-06-20 Aditya Sharma , Prabhjot Kaur , Aditya Nigam , Arnav Bhavsar

Low-field (LF) magnetic resonance imaging (MRI) improves accessibility and reduces costs but generally has lower signal-to-noise ratios and degraded contrast compared to high field (HF) MRI, limiting its clinical utility. Simulating LF MRI…

图像与视频处理 · 电气工程与系统科学 2026-03-27 Ziqi Gao , Nicha Dvornek , Xiaoran Zhang , Gigi Galiana , Hemant Tagare , Todd Constable

The recent introduction of portable, low-field MRI (LF-MRI) into the clinical setting has the potential to transform neuroimaging. However, LF-MRI is limited by lower resolution and signal-to-noise ratio, leading to incomplete…

Low-field (LF) MRI scanners (<1T) are still prevalent in settings with limited resources or unreliable power supply. However, they often yield images with lower spatial resolution and contrast than high-field (HF) scanners. This quality…

图像与视频处理 · 电气工程与系统科学 2023-11-14 Seunghoi Kim , Henry F. J. Tregidgo , Ahmed K. Eldaly , Matteo Figini , Daniel C. Alexander

1.5T or 3T scanners are the current standard for clinical MRI, but low-field (<1T) scanners are still common in many lower- and middle-income countries for reasons of cost and robustness to power failures. Compared to modern high-field…

Three-dimensional reconstruction of cortical surfaces from MRI for morphometric analysis is fundamental for understanding brain structure. While high-field MRI (HF-MRI) is standard in research and clinical settings, its limited availability…

Low-field (<1T) magnetic resonance imaging (MRI) scanners remain in widespread use in low- and middle-income countries (LMICs) and are commonly used for some applications in higher income countries e.g. for small child patients with…

The reconstruction of human visual inputs from brain activity, particularly through functional Magnetic Resonance Imaging (fMRI), holds promising avenues for unraveling the mechanisms of the human visual system. Despite the significant…

计算机视觉与模式识别 · 计算机科学 2024-04-09 Yujian Xiong , Wenhui Zhu , Zhong-Lin Lu , Yalin Wang

Low-dose CT (LDCT) imaging is widely used to reduce radiation exposure to mitigate high exposure side effects, but often suffers from noise and artifacts that affect diagnostic accuracy. To tackle this issue, deep learning models have been…

计算机视觉与模式识别 · 计算机科学 2025-11-04 Taifour Yousra , Beghdadi Azeddine , Marie Luong , Zuheng Ming

We present an unsupervised single image bidirectional Magnetic Resonance Image (MRI) synthesizer that synthesizes an Ultra-Low Field (ULF) like image from a High-Field (HF) magnitude image and vice-versa. Unlike existing MRI synthesis…

计算机视觉与模式识别 · 计算机科学 2025-11-20 Pranav Indrakanti , Ivor Simpson

Light Field (LF) offers unique advantages such as post-capture refocusing and depth estimation, but low-light conditions limit these capabilities. To restore low-light LFs we should harness the geometric cues present in different LF views,…

图像与视频处理 · 电气工程与系统科学 2020-12-29 Mohit Lamba , Kranthi Kumar , Kaushik Mitra

Hand-held light field (LF) cameras have unique advantages in computer vision such as 3D scene reconstruction and depth estimation. However, the related applications are limited by the ultra-small baseline, e.g., leading to the extremely low…

计算机视觉与模式识别 · 计算机科学 2022-02-01 Xiao Huo , Dongyang Jin , Saiping Zhang , Fuzheng Yang

Magnetic resonance imaging (MRI) is known to have reduced signal-to-noise ratios (SNR) at lower field strengths, leading to signal degradation when producing a low-field MRI image from a high-field one. Therefore, reconstructing a…

图像与视频处理 · 电气工程与系统科学 2023-05-05 Zhuo-Xu Cui , Congcong Liu , Chentao Cao , Yuanyuan Liu , Jing Cheng , Qingyong Zhu , Yanjie Zhu , Haifeng Wang , Dong Liang

Light field cameras capture the 3D information in a scene with a single exposure. This special feature makes light field cameras very appealing for a variety of applications: from post-capture refocus, to depth estimation and image-based…

计算机视觉与模式识别 · 计算机科学 2018-08-01 Mattia Rossi , Pascal Frossard

Ultrahigh-field (UHF) magnetic resonance imaging (MRI), i.e., 7T MRI, provides superior anatomical details of internal brain structures owing to its enhanced signal-to-noise ratio and susceptibility-induced contrast. However, the widespread…

计算机视觉与模式识别 · 计算机科学 2024-02-14 Kwanseok Oh , Jieun Lee , Da-Woon Heo , Dinggang Shen , Heung-Il Suk

Light field (LF) images containing information for multiple views have numerous applications, which can be severely affected by low-light imaging. Recent learning-based methods for low-light enhancement have some disadvantages, such as a…

计算机视觉与模式识别 · 计算机科学 2023-08-16 Shansi Zhang , Nan Meng , Edmund Y. Lam

Ultra-low-field (ULF) MRI offers portable and accessible neuroimaging but suffers from reduced signal-to-noise ratio and limited spatial resolution compared to high-field (HF) systems. Acquiring paired ULF-HF data for supervised enhancement…

计算机视觉与模式识别 · 计算机科学 2026-05-26 Toufiq Musah , Salvatore Calcagno , Federica Proietto Salanitri , Xiaomeng Li , Maruf Adewole , Marawan Elbatel

Ultra-low-field (ULF) MRI promises broader accessibility but suffers from low signal-to-noise ratio (SNR), reduced spatial resolution, and contrasts that deviate from high-field standards. Image-to-image translation can map ULF images to a…

图像与视频处理 · 电气工程与系统科学 2025-11-13 Felix F Zimmermann

Enhancing RAW images captured under low light conditions is a challenging task. Recent deep learning based RAW enhancement methods have shifted from using real paired data to relying on synthetic datasets. These synthetic datasets are…

图像与视频处理 · 电气工程与系统科学 2025-09-11 Juntai Zeng

Images captured under extremely low light conditions are noise-limited, which can cause existing robotic vision algorithms to fail. In this paper we develop an image processing technique for aiding 3D reconstruction from images acquired in…

机器人学 · 计算机科学 2021-08-24 Ahalya Ravendran , Mitch Bryson , Donald G. Dansereau
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