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Spatial resolution improvement from an acquired measurement using long pulse is developed for Brillouin optical time domain analysis (BOTDA) systems based on the total variation deconvolution algorithm. The frequency dependency of Brillouin…

Signal Processing · Electrical Eng. & Systems 2021-04-07 Li Shen , Zhiyong Zhao , Can Zhao , Hao Wu , Chao Lu , Ming Tang

Spatial resolution (SR), a core parameter of Brillouin optical time-domain analysis (BOTDA) sensors, determines the minimum fiber length over which physical perturbations can be accurately detected. However, the phonon lifetime in the fiber…

Optics · Physics 2025-07-18 Zhao Ge , Hao Wu , zhiyong Zhao , Li Shen , Ming Tang

A novel Brillouin optical time-domain analysis (BOTDA) system is proposed using intensity-modulated optical orthogonal frequency division multiplexing probe signal and direct detection (IM-DD-OOFDM) without frequency sweep operation. The…

Instrumentation and Detectors · Physics 2017-02-13 Can Zhao , Ming Tang , Liang Wang , Hao Wu , Zhiyong Zhao , Yunli Dang , Jiadi Wu , Songnian Fu , Deming Liu , Perry Ping Shum

Artificial neural networks (ANNs) can be used to replace traditional methods in various fields, making signal processing more efficient and meeting the real-time processing requirements of the Internet of Things (IoT). As a special type of…

Signal Processing · Electrical Eng. & Systems 2018-12-20 Yongxin Liang , Jialin Jiang , Yongxiang Chen , Richeng Zhu , Chongyu Lu , Zinan Wang

Brillouin optical time domain analyzer (BOTDA) fiber sensors have shown strong capability in static long haul distributed temperature/strain sensing. However, in applications such as structural health monitoring and leakage detection,…

Signal Processing · Electrical Eng. & Systems 2019-01-07 Huan Wu , Hongda Wang , Chiu-Sing Choy , Chester Shu , Chao Lu

A convolutional neural network (CNN) architecture is developed to improve the pulse shape discrimination (PSD) power of the gadolinium-loaded organic liquid scintillation detector to reduce the fast neutron background in the inverse beta…

3D time-of-flight (ToF) imaging is used in a variety of applications such as augmented reality (AR), computer interfaces, robotics and autonomous systems. Single-photon avalanche diodes (SPADs) are one of the enabling technologies providing…

Image and Video Processing · Electrical Eng. & Systems 2021-10-13 Germán Mora-Martín , Alex Turpin , Alice Ruget , Abderrahim Halimi , Robert Henderson , Jonathan Leach , Istvan Gyongy

Accurate classification of respiratory sounds requires deep learning models that effectively capture fine-grained acoustic features and long-range temporal dependencies. Convolutional Neural Networks (CNNs) are well-suited for extracting…

Sound · Computer Science 2025-07-29 Nouhaila Fraihi , Ouassim Karrakchou , Mounir Ghogho

Different from traditional hyperspectral super-resolution approaches that focus on improving the spatial resolution, spectral super-resolution aims at producing a high-resolution hyperspectral image from the RGB observation with…

Computer Vision and Pattern Recognition · Computer Science 2018-11-30 Yiqi Yan , Lei Zhang , Jun Li , Wei Wei , Yanning Zhang

Pulse shaping is a common technique for optimizing signal-to-noise ratio (SNR) in particle detectors. Although analog or digital linear shapers are typically used for this purpose, there are nonlinear approaches, such as neural networks…

Instrumentation and Detectors · Physics 2024-01-11 Alberto Regadío , Juan Ignacio G. Tejedor , Luis Esteban , Sebastián Sánchez-Prieto

In this paper, we consider the task of space-time video super-resolution (ST-VSR), which can increase the spatial resolution and frame rate for a given video simultaneously. Despite the remarkable progress of recent methods, most of them…

Computer Vision and Pattern Recognition · Computer Science 2022-11-17 Yuantong Zhang , Huairui Wang , Han Zhu , Zhenzhong Chen

Deep learning models have provided huge interpretation power for image-like data. Specifically, convolutional neural networks (CNNs) have demonstrated incredible acuity for tasks such as feature extraction or parameter estimation. Here we…

Convolutional Neural Networks (CNNs) have been consistently proved state-of-the-art results in image Super-Resolution (SR), representing an exceptional opportunity for the remote sensing field to extract further information and knowledge…

Image and Video Processing · Electrical Eng. & Systems 2020-11-02 Francesco Salvetti , Vittorio Mazzia , Aleem Khaliq , Marcello Chiaberge

The study of turbulent flows calls for measurements with high resolution both in space and in time. We propose a new approach to reconstruct High-Temporal-High-Spatial resolution velocity fields by combining two sources of information that…

Fluid Dynamics · Physics 2017-07-10 Linh Van Nguyen , Jean-Philippe Laval , Pierre Chainais

Atmospheric simulations for urban cities can be computationally intensive because of the need for high spatial resolution, such as a few meters, to accurately represent buildings and streets. Deep learning has recently gained attention…

Atmospheric and Oceanic Physics · Physics 2023-03-30 Yuki Yasuda , Ryo Onishi , Keigo Matsuda

Scene categorization (SC) in remotely acquired images is an important subject with broad consequences in different fields, including catastrophe control, ecological observation, architecture for cities, and more. Nevertheless, its several…

Pan-sharpening is a fundamental and significant task in the field of remote sensing imagery processing, in which high-resolution spatial details from panchromatic images are employed to enhance the spatial resolution of multi-spectral (MS)…

Computer Vision and Pattern Recognition · Computer Science 2017-12-29 Qiangqiang Yuan , Yancong Wei , Xiangchao Meng , Huanfeng Shen , Liangpei Zhang

Shot boundary detection (SBD) is an important component of many video analysis tasks, such as action recognition, video indexing, summarization and editing. Previous work typically used a combination of low-level features like color…

Computer Vision and Pattern Recognition · Computer Science 2017-05-24 Michael Gygli

Convolutional Neural Networks (CNNs) have become the state-of-the-art in various computer vision tasks, but they are still premature for most sensor data, especially in pervasive and wearable computing. A major reason for this is the…

Computer Vision and Pattern Recognition · Computer Science 2017-07-18 Monit Shah Singh , Vinaychandran Pondenkandath , Bo Zhou , Paul Lukowicz , Marcus Liwicki

Shot boundary detection (SBD) is an important pre-processing step for video manipulation. Here, each segment of frames is classified as either sharp, gradual or no transition. Current SBD techniques analyze hand-crafted features and attempt…

Computer Vision and Pattern Recognition · Computer Science 2017-07-28 Ahmed Hassanien , Mohamed Elgharib , Ahmed Selim , Sung-Ho Bae , Mohamed Hefeeda , Wojciech Matusik
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