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A grand challenge of the 21st century cosmology is to accurately estimate the cosmological parameters of our Universe. A major approach to estimating the cosmological parameters is to use the large-scale matter distribution of the Universe.…

Cosmology and Nongalactic Astrophysics · Physics 2017-11-07 Siamak Ravanbakhsh , Junier Oliva , Sebastien Fromenteau , Layne C. Price , Shirley Ho , Jeff Schneider , Barnabas Poczos

Resolving high-contrast targets is a fundamental yet highly challenging task in astronomy. Using quantum estimation theory, we demonstrate that the ultimate limit for estimating the separation between two unequal-brightness thermal sources…

Instrumentation and Methods for Astrophysics · Physics 2025-09-17 Chenyu Hu , Ben Wang , Jiandong Zhang , Kunxu Wang , Huigen Liu , Jilin Zhou , Lijian Zhang

Separating an audio scene into isolated sources is a fundamental problem in computer audition, analogous to image segmentation in visual scene analysis. Source separation systems based on deep learning are currently the most successful…

Sound · Computer Science 2018-11-07 Prem Seetharaman , Gordon Wichern , Jonathan Le Roux , Bryan Pardo

From the nature of dark matter to the rate of expansion of our Universe, observations of distant galaxies distorted through strong gravitational lensing have the potential to answer some of the major open questions in astrophysics. Modeling…

Cosmology and Nongalactic Astrophysics · Physics 2022-10-18 Siddharth Mishra-Sharma , Ge Yang

The light we receive from distant astrophysical objects carries information about their origins and the physical mechanisms that power them. The study of these signals, however, is complicated by the fact that observations are often a…

We study the attribution problem [28] for deep networks applied to perception tasks. For vision tasks, attribution techniques attribute the prediction of a network to the pixels of the input image. We propose a new technique called…

Computer Vision and Pattern Recognition · Computer Science 2020-04-09 Shawn Xu , Subhashini Venugopalan , Mukund Sundararajan

Angular differential imaging (ADI) (Marois et al. 2006) is an observational technique in high contrast imaging where the telescope is used in pupil tracking mode so that the image of the sky rotates with respect to the optical surfaces.…

Earth and Planetary Astrophysics · Physics 2017-11-28 Michael Bottom , Garreth Ruane , Dimitri Mawet

Image attribution analysis seeks to highlight the feature representations learned by visual models such that the highlighted feature maps can reflect the pixel-wise importance of inputs. Gradient integration is a building block in the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-26 Róisín Luo , James McDermott , Colm O'Riordan

Segmenting objects in images and separating sound sources in audio are challenging tasks, in part because traditional approaches require large amounts of labeled data. In this paper we develop a neural network model for visual object…

Computer Vision and Pattern Recognition · Computer Science 2019-04-22 Andrew Rouditchenko , Hang Zhao , Chuang Gan , Josh McDermott , Antonio Torralba

Survey telescopes such as the Vera C. Rubin Observatory and the Square Kilometre Array will discover billions of static and dynamic astronomical sources. Properly mined, these enormous datasets will likely be wellsprings of rare or unknown…

Instrumentation and Methods for Astrophysics · Physics 2021-10-07 Michelle Lochner , Bruce A. Bassett

For high-redshift submillimetre or millimetre sources detected with single dish telescopes, interferometric follow-up has shown that many are multiple submm galaxies blended together. Confusion-limited Herschel observations of such targets…

Astrophysics of Galaxies · Physics 2016-09-21 Todd MacKenzie , Douglas Scott , Mark Swinbank

Medical image diagnosis can be achieved by deep neural networks, provided there is enough varied training data for each disease class. However, a hitherto unknown disease class not encountered during training will inevitably be…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Mohammadreza Mohseni , Jordan Yap , William Yolland , Majid Razmara , M Stella Atkins

Computer-aided diagnostics has benefited from the development of deep learning-based computer vision techniques in these years. Traditional supervised deep learning methods assume that the test sample is drawn from the identical…

Computer Vision and Pattern Recognition · Computer Science 2024-07-04 Zesheng Hong , Yubiao Yue , Yubin Chen , Lele Cong , Huanjie Lin , Yuanmei Luo , Mini Han Wang , Weidong Wang , Jialong Xu , Xiaoqi Yang , Hechang Chen , Zhenzhang Li , Sihong Xie

Within the last years, the classification of variable stars with Machine Learning has become a mainstream area of research. Recently, visualization of time series is attracting more attention in data science as a tool to visually help…

Instrumentation and Methods for Astrophysics · Physics 2019-03-13 Christian Pieringer , Karim Pichara , Márcio Catelán , Pavlos Protopapas

The detection limit of astronomical imaging observations is limited by several noise sources. Some of that noise is correlated between neighbouring image pixels and exposures, so in principle could be learned and corrected. We present an…

Instrumentation and Methods for Astrophysics · Physics 2026-05-04 Yuduo Guo , Hao Zhang , Mingyu Li , Fujiang Yu , Yunjing Wu , Yuhan Hao , Song Huang , Yongming Liang , Xiaojing Lin , Xinyang Li , Jiamin Wu , Zheng Cai , Qionghai Dai

Deconvolution of large survey images with millions of galaxies requires to develop a new generation of methods which can take into account a space variant Point Spread Function (PSF) and have to be at the same time accurate and fast. We…

Instrumentation and Methods for Astrophysics · Physics 2020-09-16 Florent Sureau , Alexis Lechat , Jean-Luc Starck

Traditionally source identification is solved using threshold based energy detection algorithms. These algorithms frequently sum up the activity in regions, and consider regions above a specific activity threshold to be sources. While these…

Sound · Computer Science 2022-11-03 Luke Wood , Kevin Anderson , Peter Gerstoft , Richard Bell , Raghab Subbaraman , Dinesh Bharadia

An intriguing challenge in observational astronomy is the separation signals in areas where multiple signals intersect. A typical instance of this in very-high-energy (VHE, E$\gtrsim$100 GeV) gamma-ray astronomy is the issue of residual…

High Energy Astrophysical Phenomena · Physics 2025-01-14 Marion Ullmo , Emmanuel Moulin

The next generation of telescopes will acquire terabytes of image data on a nightly basis. Collectively, these large images will contain billions of interesting objects, which astronomers call sources. The astronomers' task is to construct…

Applications · Statistics 2009-10-29 David A. Friedenberg , Christopher R. Genovese

The study on point sources in astronomical images is of special importance, since most energetic celestial objects in the Universe exhibit a point-like appearance. An approach to recognize the point sources (PS) in the X-ray astronomical…

Computer Vision and Pattern Recognition · Computer Science 2018-06-04 Zhixian Ma , Weitian Li , Lei Wang , Haiguang Xu , Jie Zhu