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Image super-resolution has been an important subject in image processing and recognition. Here, we present an attention-aided convolutional neural network (CNN) for solar image super-resolution. Our method, named SolarCNN, aims to enhance…

太阳与恒星天体物理 · 物理学 2024-03-28 Chunhui Xu , Jason T. L. Wang , Haimin Wang , Haodi Jiang , Qin Li , Yasser Abduallah , Yan Xu

The spatial properties of the solar magnetic field are crucial to decoding the physical processes in the solar interior and their interplanetary effects. However, observations from older instruments, such as the Michelson Doppler Imager…

太阳与恒星天体物理 · 物理学 2025-06-11 Francesco Pio Ramunno , Paolo Massa , Vitaliy Kinakh , Brandon Panos , André Csillaghy , Slava Voloshynovskiy

Research on the solar magnetic field and its effects on solar dynamo mechanisms and space weather events has benefited from the continual improvements in instrument resolution and measurement frequency. The augmentation and assimilation of…

太阳与恒星天体物理 · 物理学 2024-04-10 Ying Qin , Kai-Fan Ji , Hui Liu , Xiao-Guang Yu

Solar activity is usually caused by the evolution of solar magnetic fields. Magnetic field parameters derived from photospheric vector magnetograms of solar active regions have been used to analyze and forecast eruptive events such as solar…

太阳与恒星天体物理 · 物理学 2023-07-26 Haodi Jiang , Qin Li , Zhihang Hu , Nian Liu , Yasser Abduallah , Ju Jing , Genwei Zhang , Yan Xu , Wynne Hsu , Jason T. L. Wang , Haimin Wang

Public satellite missions are commonly bound to a trade-off between spatial and temporal resolution as no single sensor provides fine-grained acquisitions with frequent coverage. This hinders their potential to assist vegetation monitoring…

图像与视频处理 · 电气工程与系统科学 2020-11-20 Shahine Bouabid , Maxim Chernetskiy , Maxime Rischard , Jevgenij Gamper

Solar activity is one of the main drivers of variability in our solar system and the key source of space weather phenomena that affect Earth and near Earth space. The extensive record of high resolution extreme ultraviolet (EUV)…

计算机视觉与模式识别 · 计算机科学 2023-04-17 Mehdi Cherti , Alexander Czernik , Stefan Kesselheim , Frederic Effenberger , Jenia Jitsev

The variation of solar irradiance is one of the natural forcing mechanisms of the terrestrial climate. Hence, the time-dependent solar irradiance is an important input parameter for climate modelling. The solar surface magnetic field is a…

太阳与恒星天体物理 · 物理学 2015-05-11 Omar Ashamari , Rami Qahwaji , Stan Ipson , Micha Scholl , Omar Nibouche , Margit Haberreiter

Magnetic resonance imaging (MRI) provides high spatial resolution and excellent soft-tissue contrast without using harmful ionising radiation. Dynamic MRI is an essential tool for interventions to visualise movements or changes of the…

We applied Deep Learning algorithm known as Generative Adversarial Networks (GANs) to perform solar image-to-image translation. That is, from Solar Dynamics Observatory (SDO)/Helioseismic and Magnetic Imager(HMI) line of sight magnetogram…

计算机视觉与模式识别 · 计算机科学 2021-06-08 Ankan Dash , Junyi Ye , Guiling Wang

High-resolution (HR) MRI scans obtained from research-grade medical centers provide precise information about imaged tissues. However, routine clinical MRI scans are typically in low-resolution (LR) and vary greatly in contrast and spatial…

图像与视频处理 · 电气工程与系统科学 2023-08-25 Jueqi Wang , Jacob Levman , Walter Hugo Lopez Pinaya , Petru-Daniel Tudosiu , M. Jorge Cardoso , Razvan Marinescu

Super Resolution (SR) plays a critical role in computer vision, particularly in medical imaging, where hardware and acquisition time constraints often result in low spatial and temporal resolution. While diffusion models have been applied…

图像与视频处理 · 电气工程与系统科学 2024-11-01 Vishal Dubey

The Helioseismic and Magnetic Imager (HMI) provides continuum images and magnetograms with a cadence better than one per minute. It has been continuously observing the Sun 24 hours a day for the past 7 years. The obvious trade-off between…

太阳与恒星天体物理 · 物理学 2018-06-06 C. J. Diaz Baso , A. Asensio Ramos

Purpose: To propose a domain-conditioned and temporal-guided diffusion modeling method, termed dynamic Diffusion Modeling (dDiMo), for accelerated dynamic MRI reconstruction, enabling diffusion process to characterize spatiotemporal…

图像与视频处理 · 电气工程与系统科学 2025-01-17 Liping Zhang , Iris Yuwen Zhou , Sydney B. Montesi , Li Feng , Fang Liu

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

Multimodal synthetic data generation is crucial in domains such as autonomous driving, robotics, augmented/virtual reality, and retail. We propose a novel approach, GenMM, for jointly editing RGB videos and LiDAR scans by inserting…

计算机视觉与模式识别 · 计算机科学 2024-06-18 Bharat Singh , Viveka Kulharia , Luyu Yang , Avinash Ravichandran , Ambrish Tyagi , Ashish Shrivastava

The rapid advancement of deep generative models (DGMs) has significantly advanced research in computer vision, providing a cost-effective alternative to acquiring vast quantities of expensive imagery. However, existing methods predominantly…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Chuang Yang , Bingxuan Zhao , Qing Zhou , Qi Wang

Investigating the solar magnetic field is crucial to understand the physical processes in the solar interior as well as their effects on the interplanetary environment. We introduce a novel method to predict the evolution of the solar…

This paper develops a generative deep learning model for the synthesis of multiple-input multiple-output (MIMO) active sensing waveforms with desired properties, including constant modulus and a user-defined beampattern. The proposed…

信号处理 · 电气工程与系统科学 2024-12-31 Vesa Saarinen , Robin Rajamäki , Visa Koivunen

Deep learning (DL) models in medical imaging face challenges in generalizability and robustness due to variations in image acquisition parameters (IAP). In this work, we introduce a novel method using conditional denoising diffusion…

图像与视频处理 · 电气工程与系统科学 2024-11-01 Pedro Morão , Joao Santinha , Yasna Forghani , Nuno Loução , Pedro Gouveia , Mario A. T. Figueiredo

Medical image data is less accessible than in other domains due to privacy and regulatory constraints. In addition, labeling requires costly, time-intensive manual image annotation by clinical experts. To overcome these challenges,…

图像与视频处理 · 电气工程与系统科学 2025-07-11 Fangyijie Wang , Kevin Whelan , Félix Balado , Kathleen M. Curran , Guénolé Silvestre
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