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Intensity mapping has emerged as a promising tool to probe the three-dimensional structure of the universe. The traditional approach of galaxy redshift surveys is based on individual galaxy detection, typically performed by thresholding and…

Cosmology and Nongalactic Astrophysics · Physics 2019-06-11 Yun-Ting Cheng , Roland de Putter , Tzu-Ching Chang , Olivier Dore

We present a new non-parametric deprojection algorithm DOPING (Deprojection of Observed Photometry using and INverse Gambit), that is designed to extract the three dimensional luminosity density distribution $\rho$, from the observed…

Astrophysics · Physics 2009-06-23 Dalia Chakrabarty , Laura Ferrarese

This paper presents a new algorithm for autonomous multitarget tracking of resident space objects using optical angles-only measurements from a spaceborne observer. To enable autonomous angles-only navigation of spacecraft swarms, an…

Signal Processing · Electrical Eng. & Systems 2021-10-04 Justin Kruger , Simone D'Amico

Groups and clusters of galaxies are a current focus of astronomical research owing to their role in determining the environmental effects on galaxies and the constraints they provide to cosmology. The eROSITA X-ray telescope on board the…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-02 A. Finoguenov , A. Merloni , J. Comparat , K. Nandra , M. Salvato , E. Tempel , A. Raichoor , J. Richard , J. -P. Kneib , A. Pillepich , M. Sahlén , P. Popesso , P. Norberg , R. McMahon

Multi-view Synthetic Aperture Radar (SAR) imaging can effectively enhance the performance of tasks such as automatic target recognition and image information fusion. Unmanned aerial vehicles (UAVs) have the advantages of flexible deployment…

Systems and Control · Electrical Eng. & Systems 2025-05-23 Deyu Song , Xiangyin Zhang , Zipei Yu , Kaiyu Qin

The European Southern Observatory's (ESO) Visible and Infrared Survey Telescope for Astronomy (VISTA) is a 4-m class survey telescope for wide-field near-infrared imaging. VISTA is currently running a suite of six public surveys, which will…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 J. R. Findlay , W. J. Sutherland , B. P. Venemans , C. Reyle , A. C. Robin , D. G. Bonfield , V. A. Bruce , M. J. Jarvis

Fast radio transient search algorithms identify signals of interest by iterating and applying a threshold on a set of matched filters. These filters are defined by properties of the transient such as time and dispersion. A real transient…

We present a conceptual design for a fiber positioning system for multi-object high-resolution spectroscopy, designed to be compatible with the upcoming large telescopes with a wide field of view. The design incorporates multiple…

Instrumentation and Methods for Astrophysics · Physics 2025-09-23 Manjunath Bestha , T. Sivarani , Arun Surya , Sudharsan Yadav , Athira Unni , Parvathy M , Devika Divakar , S. Sriram , Ajin Prakash , Amirul Hasan

Optical interferometers provide multiple wavelength measurements. In order to fully exploit the spectral and spatial resolution of these instruments, new algorithms for image reconstruction have to be developed. Early attempts to deal with…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 Éric Thiébaut , Ferréol Soulez , Loïc Denis

Masked Image Modeling (MIM) is a technique in self-supervised learning that focuses on acquiring detailed visual representations from unlabeled images by estimating the missing pixels in randomly masked sections. It has proven to be a…

Computer Vision and Pattern Recognition · Computer Science 2024-12-16 Khanh-Binh Nguyen , Chae Jung Park

We develop an optimization algorithm, using simulated annealing for the quantification of patterns in astronomical data based on techniques developed for robotic vision applications. The methodology falls in the category of cost…

Instrumentation and Methods for Astrophysics · Physics 2020-09-09 Maria Chira , Manolis Plionis

We present a modified adaptive matched filter algorithm designed to identify clusters of galaxies in wide-field imaging surveys such as the Sloan Digital Sky Survey. The cluster-finding technique is fully adaptive to imaging surveys with…

Astrophysics · Physics 2009-11-13 Feng Dong , Elena Pierpaoli , James E. Gunn , Risa H. Wechsler

In beyond 5G and 6G network scenarios, the use of satellites has been actively discussed for extending target monitoring areas, even for extreme circumstances, where the monitoring functionalities can be realized due to the usage of…

Systems and Control · Electrical Eng. & Systems 2021-08-03 Joongheon Kim , Yunseok Kwak , Soyi Jung , Jae-Hyun Kim

The optimization of Kernel-Target Alignment (TA) has been recently proposed as a way to reduce the number of hardware resources in quantum classifiers. It allows to exchange highly expressive and costly circuits to moderate size, task…

Computer Vision and Pattern Recognition · Computer Science 2023-06-28 Artur Miroszewski , Jakub Mielczarek , Filip Szczepanek , Grzegorz Czelusta , Bartosz Grabowski , Bertrand Le Saux , Jakub Nalepa

Multiplexed surveys have the ambition to grow larger for the next generation of focal plane instruments. Future projects such as Spec-S5, MUST, and WST have an ever-growing need for multi-object spectroscopy (13,000 - 20,000 simultaneous…

Instrumentation and Methods for Astrophysics · Physics 2024-08-30 Maxime Rombach , Xiangyu Xu , Ricardo Araujo , Markus Thurneysen , Stefane Caseiro , Corentin Magnenat , Joseph H. Silber , Malak Galal , David Schlegel , Jean-Paul Kneib

NMR experiments, indispensable to chemists in many areas of research, are often run with generic, unoptimised experimental parameters. This approach makes robust and automated acquisition on different samples and instruments extremely…

Systems and Control · Electrical Eng. & Systems 2021-08-17 Jonathan R. J. Yong , Mohammadali Foroozandeh

Spectral imaging is a method in medical x-ray imaging to extract information about the object constituents by the material-specific energy dependence of x-ray attenuation. Contrast-enhanced spectral imaging has been thoroughly investigated,…

Medical Physics · Physics 2021-01-26 Erik Fredenberg , Magnus Aslund , Bjorn Cederstrom , Mats Lundqvist , Mats Danielsson

Automotive cameras, particularly surround-view cameras, tend to get soiled by mud, water, snow, etc. For higher levels of autonomous driving, it is necessary to have a soiling detection algorithm which will trigger an automatic cleaning…

Computer Vision and Pattern Recognition · Computer Science 2020-07-03 Arindam Das , Pavel Krizek , Ganesh Sistu , Fabian Burger , Sankaralingam Madasamy , Michal Uricar , Varun Ravi Kumar , Senthil Yogamani

Most existing approaches address multi-view subspace clustering problem by constructing the affinity matrix on each view separately and afterwards propose how to extend spectral clustering algorithm to handle multi-view data. This paper…

Computer Vision and Pattern Recognition · Computer Science 2017-08-30 Maria Brbic , Ivica Kopriva

Consider convex optimization problems subject to a large number of constraints. We focus on stochastic problems in which the objective takes the form of expected values and the feasible set is the intersection of a large number of convex…

Machine Learning · Statistics 2015-11-13 Mengdi Wang , Yichen Chen , Jialin Liu , Yuantao Gu