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相关论文: Improving Radio Interferometry Imaging by Explicit…

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We report on a broader evaluation of statistical bootstrap resampling methods as a tool for pixel-level calibration and imaging fidelity assessment in radio interferometry. Pixel-level imaging fidelity assessment is a challenging problem,…

天体物理仪器与方法 · 物理学 2015-05-14 Athol Kemball , Adam Martinsek , Modhurita Mitra , Hsin-Fang Chiang

Remote-sensing (RS) Change Detection (CD) aims to detect "changes of interest" from co-registered bi-temporal images. The performance of existing deep supervised CD methods is attributed to the large amounts of annotated data used to train…

计算机视觉与模式识别 · 计算机科学 2022-04-22 Wele Gedara Chaminda Bandara , Vishal M. Patel

Hyperspectral imaging has become a significant source of valuable data for astronomers over the past decades. Current instrumental and observing time constraints allow direct acquisition of multispectral images, with high spatial but low…

计算机视觉与模式识别 · 计算机科学 2019-12-30 Claire Guilloteau , Thomas Oberlin , Olivier Berné , Nicolas Dobigeon

Cardiac magnetic resonance imaging (CMR) is vital for diagnosing heart diseases, but long scan time remains a major drawback. To address this, accelerated imaging techniques have been introduced by undersampling k-space, which reduces the…

计算机视觉与模式识别 · 计算机科学 2025-02-24 Donghang Lyu , Chinmay Rao , Marius Staring , Matthias J. P. van Osch , Mariya Doneva , Hildo J. Lamb , Nicola Pezzotti

The technique of non-redundant masking (NRM) transforms a conventional telescope into an interferometric array. In practice, this provides a much better constrained point spread function than a filled aperture and thus higher resolution…

天体物理仪器与方法 · 物理学 2017-11-29 Steph Sallum , Josh Eisner

Recovering 3D geometry and textures of individual objects is crucial for many robotics applications, such as manipulation, pose estimation, and autonomous driving. However, decomposing a target object from a complex background is…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Jun Wu , Sicheng Li , Sihui Ji , Yifei Yang , Yue Wang , Rong Xiong , Yiyi Liao

The large-scale structure is a major source of cosmological information. However, next-generation photometric galaxy surveys will only provide a distorted view of cosmic structures due to large redshift uncertainties. To address the need…

宇宙学与河外天体物理 · 物理学 2023-01-10 Eleni Tsaprazi , Jens Jasche , Guilhem Lavaux , Florent Leclercq

The detection and characterisation of extra-solar planets is a major theme driving modern astronomy, with the vast majority of such measurements being achieved by Doppler radial-velocity and transit observations. Another technique -- direct…

Imaging in radio astronomy is usually carried out with a single-dish radio telescope doing a raster scan of a region of the sky or with an interferometer that samples the visibility function of the sky brightness. Mosaic observations are…

天体物理仪器与方法 · 物理学 2019-06-12 Urvashi Rau , Nikhil Naik , Timothy Braun

Multi-modality (or multi-channel) imaging is becoming increasingly important and more widely available, e.g. hyperspectral imaging in remote sensing, spectral CT in material sciences as well as multi-contrast MRI and PET-MR in medicine.…

图像与视频处理 · 电气工程与系统科学 2020-12-25 Leon Bungert , Matthias J. Ehrhardt

Incorporating wide-field considerations in interferometric imaging is of increasing importance for next-generation radio telescopes. Compressed sensing techniques for interferometric imaging have been extended to wide fields recently,…

天体物理仪器与方法 · 物理学 2011-08-29 J. D. McEwen , Y. Wiaux

Inferring sky surface brightness distributions from noisy interferometric data in a principled statistical framework has been a key challenge in radio astronomy. In this work, we introduce Imaging for Radio Interferometry with Score-based…

天体物理仪器与方法 · 物理学 2025-01-07 Noé Dia , M. J. Yantovski-Barth , Alexandre Adam , Micah Bowles , Laurence Perreault-Levasseur , Yashar Hezaveh , Anna Scaife

Compressed Sensing (CS) significantly speeds up Magnetic Resonance Image (MRI) processing and achieves accurate MRI reconstruction from under-sampled k-space data. According to the current research, there are still several problems with…

图像与视频处理 · 电气工程与系统科学 2023-10-24 Junpeng Tan , Chunmei Qing , Xiangmin Xu

A key processing step in ground-based astronomy involves combining multiple noisy and blurry exposures to produce an image of the night sky with an improved signal-to-noise ratio. Typically, this is achieved via image coaddition, and can be…

天体物理仪器与方法 · 物理学 2025-09-15 Yashil Sukurdeep , Tamás Budavári , Andrew J. Connolly , Fausto Navarro

Quality control (QC) of medical images is essential to ensure that downstream analyses such as segmentation can be performed successfully. Currently, QC is predominantly performed visually at significant time and operator cost. We aim to…

图像与视频处理 · 电气工程与系统科学 2020-02-03 Richard Shaw , Carole H. Sudre , Sebastien Ourselin , M. Jorge Cardoso

Change detection (CD) aims to identify surface changes from multi-temporal remote sensing imagery. In real-world scenarios, Pixel-level change labels are expensive to acquire, and existing models struggle to adapt to scenarios with diverse…

计算机视觉与模式识别 · 计算机科学 2026-04-24 Kaixuan Jiang , Chen Wu , Zhenghui Zhao , Chengxi Han , Haonan Guo , Hongruixuan Chen

The inverse imaging task in radio interferometry is a key limiting factor to retrieving Bayesian uncertainties in radio astronomy in a computationally effective manner. We use a score-based prior derived from optical images of galaxies to…

Dynamic contrast-enhanced magnetic resonance imaging (DCE- MRI) is a widely used multi-phase technique routinely used in clinical practice. DCE and similar datasets of dynamic medical data tend to contain redundant information on the…

While Computed Tomography (CT) reconstruction from X-ray sinograms is necessary for clinical diagnosis, iodine radiation in the imaging process induces irreversible injury, thereby driving researchers to study sparse-view CT reconstruction,…

图像与视频处理 · 电气工程与系统科学 2021-11-29 Ce Wang , Kun Shang , Haimiao Zhang , Qian Li , Yuan Hui , S. Kevin Zhou