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Digital PID control requires a differencing operation to implement the D gain. In order to suppress the effects of noisy data, the traditional approach is to filter the data, where the frequency response of the filter is adjusted manually…

系统与控制 · 电气工程与系统科学 2024-07-02 Shashank Verma , Brian Lai , Dennis S. Bernstein

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.…

地球与行星天体物理 · 物理学 2017-11-28 Michael Bottom , Garreth Ruane , Dimitri Mawet

Multispectral Optoacoustic Tomography (MSOT) uniquely enables spatial mapping in high resolution of oxygen saturation (SO$_2$), with potential applications in studying pathological complications and therapy efficacy. MSOT offers seamless…

First-shot (FS) unsupervised anomalous sound detection (ASD) is a brand-new task introduced in DCASE 2023 Challenge Task 2, where the anomalous sounds for the target machine types are unseen in training. Existing methods often rely on the…

声音 · 计算机科学 2024-03-12 Hejing Zhang , Qiaoxi Zhu , Jian Guan , Haohe Liu , Feiyang Xiao , Jiantong Tian , Xinhao Mei , Xubo Liu , Wenwu Wang

Superconducting transition-edge sensors (TESs) carried by X-ray telescopes are powerful tools for the study of neutron stars and black holes. Several methods, such as optimal filtering or principal component analysis, have already been…

天体物理仪器与方法 · 物理学 2021-04-12 Paul Ripoche , Jeremy Heyl

Akinetic swept-sources are essential for high-speed optical coherence tomography (OCT) imaging. Time-stretched supercontinuum (TSSC) lasers have proven to be efficient for multi-MHz swept-sources. However, lack of low-noise broadband lasers…

Near-infrared array detectors, like the \JWST NIRSpec's Teledyne's H2RGs, often provide reference pixels and a reference output. These are used to remove correlated noise. Improved Reference Sampling and Subtraction (\IRSSquare, pronounced…

Although mainstream unsupervised anomaly detection (AD) (including image-level classification and pixel-level segmentation)algorithms perform well in academic datasets, their performance is limited in practical application due to the ideal…

计算机视觉与模式识别 · 计算机科学 2025-01-14 Chengjie Wang , Xi Jiang , Bin-Bin Gao , Zhenye Gan , Yong Liu , Feng Zheng , Lizhuang Ma

We study an inverse initial source problem that models Photoacoustic tomography measurements with array detectors, and introduce a method that can be viewed as a modification of the so called back and forth nudging method. We show that the…

偏微分方程分析 · 数学 2016-11-23 Olga Chervova , Lauri Oksanen

Quantum-intensity-correlated twin beams of light can be used to measure absorption with precision beyond the classical shot-noise limit. The degree to which this can be achieved with a given estimator is defined by the quality of the…

量子物理 · 物理学 2020-08-26 Jason D. Mueller , Nigam Samantaray , Jonathan C. F. Matthews

For a sound field observed on a sensor array, compressive sensing (CS) reconstructs the direction-of-arrival (DOA) of multiple sources using a sparsity constraint. The DOA estimation is posed as an underdetermined problem by expressing the…

统计理论 · 数学 2023-07-19 Peter Gerstoft , Angeliki Xenaki , Christoph F. Mecklenbräuker

Mitigating bias in machine learning models is a critical endeavor for ensuring fairness and equity. In this paper, we propose a novel approach to address bias by leveraging pixel image attributions to identify and regularize regions of…

计算机视觉与模式识别 · 计算机科学 2025-07-08 Sander De Coninck , Sam Leroux , Pieter Simoens

Aims. In astronomy, machine learning has been successful in various tasks such as source localisation, classification, anomaly detection, and segmentation. However, feature regression remains an area with room for improvement. We aim to…

We explore means to advance source camera identification based on sensor noise in a data-driven framework. Our focus is on improving the sensor pattern noise (SPN) extraction from a single image at test time. Where existing works suppress…

计算机视觉与模式识别 · 计算机科学 2020-02-10 Matthias Kirchner , Cameron Johnson

Transmission spectroscopy, which consists of measuring the wavelength-dependent absorption of starlight by a planet's atmosphere during a transit, is a powerful probe of atmospheric composition. However, the expected signal is typically…

地球与行星天体物理 · 物理学 2015-05-30 N. P. Gibson , S. Aigrain , S. Roberts , T. M. Evans , M. Osborne , F. Pont

We propose an adaptive training scheme for unsupervised medical image registration. Existing methods rely on image reconstruction as the primary supervision signal. However, nuisance variables (e.g. noise and covisibility), violation of the…

图像与视频处理 · 电气工程与系统科学 2024-07-19 Xiaoran Zhang , John C. Stendahl , Lawrence Staib , Albert J. Sinusas , Alex Wong , James S. Duncan

Absorption measurement is an exceptionally versatile tool for many applications in science and engineering. For absorption measurements using laser beams of light, the sensitivity is theoretically limited by the shot noise due to the…

光学 · 物理学 2021-04-22 Fu Li , Tian Li , Marlan O. Scully , Girish S. Agarwal

The signal to noise ratio (SNR) is one of the important measures for reducing the noise.A technique that uses a linear prediction error filter (LPEF) and an adaptive digital filter (ADF) to achieve noise reduction in a speech and image…

网络与互联网体系结构 · 计算机科学 2011-10-12 R. Seshadri , N. Penchalaiah

This paper presents an adaptable, parallelizable method for subtracting linearly coupled noise from Advanced LIGO data. We explain the features developed to ensure that the process is robust enough to handle the variability present in…

天体物理仪器与方法 · 物理学 2019-06-27 D. Davis , T. J. Massinger , A. P. Lundgren , J. C. Driggers , A. L. Urban , L. K. Nuttall

Universal sound separation (USS) is a task to separate arbitrary sounds from an audio mixture. Existing USS systems are capable of separating arbitrary sources, given a few examples of the target sources as queries. However, separating…

音频与语音处理 · 电气工程与系统科学 2023-12-01 Yuzhuo Liu , Xubo Liu , Yan Zhao , Yuanyuan Wang , Rui Xia , Pingchuan Tain , Yuxuan Wang