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Band selection plays a crucial role in hyperspectral image classification by removing redundant and noisy bands and retaining discriminative ones. However, most existing deep learning-based methods are aimed at dealing with a specific band…

计算机视觉与模式识别 · 计算机科学 2024-06-13 Jie Feng , Xiaojian Zhong , Di Li , Weisheng Dong , Ronghua Shang , Licheng Jiao

Hyperspectral imaging (HSI) is a powerful earth observation technology that captures and processes information across a wide spectrum of wavelengths. Hyperspectral imaging provides comprehensive and detailed spectral data that is invaluable…

图像与视频处理 · 电气工程与系统科学 2025-02-10 Sadia Hussain , Brejesh Lall

This article concerns the challenge of reliable broadband passive sonar target detection and tracking in complex acoustic environments. Addressing this challenge is becoming increasingly crucial for safeguarding underwater infrastructure,…

信号处理 · 电气工程与系统科学 2024-12-23 Daniel Bossér , Magnus Lundberg Nordenvaad , Gustaf Hendeby , Isaac Skog

In a typical multi-standard military communication receiver, fast and reliable spectrum sensing unit is required to extract the information of multiple channels (frequency bands) present in a wideband input signal. In this paper, an energy…

信息论 · 计算机科学 2016-08-16 S. J. Darak , A. P. Vinod , E. M-K. Lai

This paper considers the constrained sampling multi-stream quickest change detection problem, also known as the bandit quickest change detection problem. One stream contains a change-point that shifts its mean by an unknown amount. The goal…

系统与控制 · 电气工程与系统科学 2026-03-30 Joshua Kartzman , Calvin Hawkins , Matthew Hale

Proportionate-type normalized suband adaptive filter (PNSAF-type) algorithms are very attractive choices for echo cancellation. To further obtain both fast convergence rate and low steady-state error, in this paper, a variable step size…

系统与控制 · 计算机科学 2017-06-30 Yi Yu , Haiquan Zhao

Many applications in image processing require resampling of arbitrarily located samples onto regular grid positions. This is important in frame-rate up-conversion, super-resolution, and image warping among others. A state-of-the-art high…

图像与视频处理 · 电气工程与系统科学 2022-03-16 Viktoria Heimann , Nils Genser , André Kaup

Time-dependent and systematic variations in band gain and central frequencies of instruments used to study the Cosmic Microwave Background are important factors in the data-to-map analysis pipeline. If not properly characterized, they could…

天体物理仪器与方法 · 物理学 2018-07-25 J. T. Ward , D. Alonso , J. Errard , M. J. Devlin , M. Hasselfield

Large sky surveys are increasingly relying on image subtraction pipelines for real-time (and archival) transient detection. In this process one has to contend with varying PSF, small brightness variations in many sources, as well as…

天体物理仪器与方法 · 物理学 2018-04-25 Nima Sedaghat , Ashish Mahabal

The profusion of spectral bands generated by the acquisition process of hyperspectral images generally leads to high computational costs. Such difficulties arise in particular with nonlinear unmixing methods, which are naturally more…

计算机视觉与模式识别 · 计算机科学 2017-10-24 T. Imbiriba , J. C. M. Bermudez , C. Richard , J. -Y. Tourneret

A new technique for reliably identifying point sources in millimeter/sub-millimeter wavelength maps is presented. This method accounts for the frequency dependence of noise in the Fourier domain as well as non-uniformities in the coverage…

天体物理仪器与方法 · 物理学 2015-06-15 T. A. Perera , G. W. Wilson , K. S. Scott , J. E. Austermann , J. R. Schaar , A. Mancera

The Hyperspectral image (HSI) contains several hundred bands of the same region called the Ground Truth (GT). The bands are taken in juxtaposed frequencies, but some of them are noisily measured or contain no information. For the…

计算机视觉与模式识别 · 计算机科学 2022-10-31 Hasna Nhaila , Maria Merzouqi , Elkebir Sarhrouni , Ahmed Hammouch

Optical absorption imaging is a basic detection technique for obtaining information from matter waves, in which the absorption signal can be obtained by comparing the recorded detection light field with the light field in the presence of…

量子气体 · 物理学 2019-01-03 Linxiao Niu , Xinxin Guo , Yuan Zhan , Xuzong Chen , W. M. Liu , Xiaoji Zhou

Intrusion detection has become one of the most critical tasks in a wireless network to prevent service outages that can take long to fix. The sheer variety of anomalous events necessitates adopting cognitive anomaly detection methods…

信号处理 · 电气工程与系统科学 2018-03-19 Nistha Tandiya , Ahmad Jauhar , Vuk Marojevic , Jeffrey H. Reed

Hyperspectral anomaly detection (HAD) aims to localize pixel points whose spectral features differ from the background. HAD is essential in scenarios of unknown or camouflaged target features, such as water quality monitoring, crop growth…

计算机视觉与模式识别 · 计算机科学 2024-01-03 Jitao Ma , Weiying Xie , Yunsong Li

In this paper, we propose a deep learning based model for Acoustic Anomaly Detection of Machines, the task for detecting abnormal machines by analysing the machine sound. By conducting extensive experiments, we indicate that multiple…

音频与语音处理 · 电气工程与系统科学 2024-03-04 Tin Nguyen , Lam Pham , Phat Lam , Dat Ngo , Hieu Tang , Alexander Schindler

Beam alignment (BA) is to ensure the transmitter and receiver beams are accurately aligned to establish a reliable communication link in millimeter-wave (mmwave) systems. Existing BA methods search the entire beam space to identify the…

信号处理 · 电气工程与系统科学 2019-09-10 Wen Wu , Nan Cheng , Ning Zhang , Peng Yang , Weihua Zhuang , Xuemin , Shen

Target detection in hyperspectral imagery is the process of locating pixels from an image which are likely to contain target, typically done by comparing one or more spectra for the desired target material to each pixel in the image. Target…

计算机视觉与模式识别 · 计算机科学 2022-07-25 William Basener

Recent studies try to use hyperspectral imaging (HSI) to detect foreign matters in products because it enables to visualize the invisible wavelengths including ultraviolet and infrared. Considering the enormous image channels of the HSI,…

计算机视觉与模式识别 · 计算机科学 2024-01-10 Dongeon Kim , YeongHyeon Park

Anomaly detection (AD) under data contamination is critical for deploying unsupervised defect detection in industrial environments, where curating perfectly clean training sets is impractical. However, existing methods are sensitive to…

计算机视觉与模式识别 · 计算机科学 2026-05-27 Sirojbek Safarov , Jaewoo Park , Yoon Gyo Jung , Kuan-Chuan Peng , Wonchul Kim , Seongdeok Bang , Octavia Camps