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Accurate digital twins of industrial assets, such as ships and offshore platforms, rely on the precise reconstruction of complex pipe networks. However, manual modelling of pipes from laser scan data is a time-consuming and labor-intensive…

计算机视觉与模式识别 · 计算机科学 2025-10-08 Antje Alex , Jannis Stoppe

We present a new approach for image reconstruction and weak lensing measurements with interferometers. Based on the shapelet formalism presented in Refregier (2001), object images are decomposed into orthonormal Hermite basis functions. The…

天体物理学 · 物理学 2009-11-06 Tzu-Ching Chang , Alexandre Refregier

We present the phase one report of the Bright Star Subtraction (BSS) pipeline for the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST). This pipeline is designed to create an extended PSF model by utilizing observed stars,…

天体物理仪器与方法 · 物理学 2024-08-09 Amir E. Bazkiaei , Lee S. Kelvin , Sarah Brough , Simon J. O'Toole , Aaron Watkins , Morgan A. Schmitz

The Subaru Strategic Program (SSP) is an ambitious multi-band survey using the Hyper Suprime-Cam (HSC) on the Subaru telescope. The Wide layer of the SSP is both wide and deep, reaching a detection limit of i~26.0 mag. At these depths, it…

The Infrared Spectrograph (IRS) is one of three science instruments on the Spitzer Space Telescope. The IRS comprises four separate spectrograph modules covering the wavelength range from 5.3 to 38micron with spectral resolutions, R \~90…

天体物理学 · 物理学 2011-05-05 J. R. Houck , the Spitzer/IRS team

We present the results of our investigations into options for the computing platform for the imaging pipeline in the CHILES project, an ultra-deep HI pathfinder for the era of the Square Kilometre Array. CHILES pushes the current computing…

The aim of the work presented in this paper is to test and optimise supernova detection methods based on the optimal image subtraction technique. The main focus is on applying the detection methods to wide field supernova imaging surveys…

天体物理学 · 物理学 2009-11-13 J. Melinder , S. Mattila , G. Östlin , L. Mencía Trinchant , C. Fransson

Purpose: To develop a truly calibrationless reconstruction method that derives ESPIRiT maps from uniformly-undersampled multi-channel MR data by deep learning. Methods: ESPIRiT, one commonly used parallel imaging reconstruction technique,…

信号处理 · 电气工程与系统科学 2022-10-28 Junhao Zhang , Zheyuan Yi , Yujiao Zhao , Linfang Xiao , Jiahao Hu , Christopher Man , Vick Lau , Shi Su , Fei Chen , Alex T. L. Leong , Ed X. Wu

We describe the infrastructure being developed to align and characterize the detectors for the Subaru Measurement of Images and Redshifts (SuMIRe) Prime Focus Spectrograph (PFS). PFS will employ four three-channel spectrographs with an…

天体物理仪器与方法 · 物理学 2015-06-22 Murdock Hart , Robert H. Barkhouser , Michael Carr , Mirek Golebiowski , James E. Gunn , Stephen C. Hope , Stephen A. Smee

All 21-cm signal experiments rely on electronic receivers that affect the data via both multiplicative and additive biases through the receiver's gain and noise temperature. While experiments attempt to remove these biases, the residuals of…

宇宙学与河外天体物理 · 物理学 2021-07-14 Keith Tauscher , David Rapetti , Bang D. Nhan , Alec Handy , Neil Bassett , Joshua Hibbard , David Bordenave , Richard F. Bradley , Jack O. Burns

The first six months of flight data from the Multiband Imaging Photometer for Spitzer (MIPS) were used to test MIPS reduction algorithms based on extensive preflight laboratory data and modeling. The underlying approach for the preflight…

We present the data processing pipeline to generate calibrated data products from the Spectral and Photometric Imaging Receiver (SPIRE) imaging Fourier Transform Spectrometer on the Herschel Space Observatory. The pipeline processes…

Spectral data reduction pipelines deal with a wide variety of challenges including masking cosmic rays, calibrating wavelength solutions, and estimating background noise while trying to remain model-agnostic. Traditional methods rely on…

天体物理仪器与方法 · 物理学 2025-11-24 Douglas P. Finkbeiner , Joshua S. Speagle , Tanveer Karim

The present paper introduces a method for substantial reduction of the number of diffusion encoding gradients required for reliable reconstruction of HARDI signals. The method exploits the theory of compressed sensing (CS), which…

信息论 · 计算机科学 2010-09-21 Oleg Michailovich , Yogesh Rathi , Sudipto Dolui

We present a grism extraction package (LINEAR) designed to reconstruct one-dimensional spectra from a collection of slitless spectroscopic images, ideally taken at a variety of orientations, dispersion directions, and/or dither positions.…

天体物理仪器与方法 · 物理学 2018-02-21 R. E. Ryan , S. Casertano , N. Pirzkal

We investigate super-resolution methods for image reconstruction from data provided by a family of scanning instruments like the Herschel observatory. To do this, we constructed a model of the instrument that faithfully reflects the…

宇宙学与河外天体物理 · 物理学 2015-05-27 F. Orieux , J. -F. Giovannelli , T. Rodet , A. Abergel , H. Ayasso , M. Husson

Aims: Integral Field Spectroscopy (IFS) is a powerful approach for the study of nearby galaxies since it enables a detailed analysis of their resolved physical properties. Here we present the sample of nearby galaxies selected to exploit…

Hyperspectral images are data cubes with two spatial dimensions and a third spectral dimension, providing a spectrum for each pixel, and thus allow the mapping of extended sources' physical properties. In this article, we present the…

天体物理仪器与方法 · 物理学 2024-06-19 Julia Lascar , Jérôme Bobin , Fabio Acero

Integral field spectroscopy (IFS) has been added as a new observation mode to the Robert Stobie Spectrograph (RSS), the workhorse multi-mode instrument on the Southern African Large Telescope. RSS operates as an imaging spectrograph…

天体物理仪器与方法 · 物理学 2026-03-25 Sabyasachi Chattopadhyay , Matthew A. Bershady , Michael P. Smith , Antoine Mahoro , Marsha J. Wolf

The FIBRE-pac (FMOS image-based reduction package) is an IRAF-based reduction tool for the fiber multiple-object spectrograph (FMOS) of the Subaru telescope. To reduce FMOS images, a number of special techniques are necessary because each…

天体物理仪器与方法 · 物理学 2015-06-03 F. Iwamuro , Y. Moritani , K. Yabe , M. Sumiyoshi , K. Kawate , N. Tamura , M. Akiyama , M. Kimura , N. Takato , P. Tait , K. Ohta , T. Totani , Y. Suzuki , M. Tonegawa