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229 Results Found

  • Article
  • Open Access
57 Citations
12,244 Views
27 Pages

5 June 2017

Distributed vibration sensing based on phase-sensitive optical time domain reflectometry ( ϕ -OTDR) is being widely used in several applications. However, one of the main challenges in coherent detection-based ϕ -OTDR systems is the fading n...

  • Article
  • Open Access
4 Citations
2,911 Views
23 Pages

9 September 2021

Recently, Discriminative Correlation Filters (DCF) have shown excellent performance in visual object tracking. The correlation for a computing response map can be conducted efficiently in Fourier domain by Discrete Fourier Transform (DFT) of inputs,...

  • Article
  • Open Access
11 Citations
3,748 Views
24 Pages

19 November 2021

Correlation filter (CF) based trackers have gained significant attention in the field of visual single-object tracking, owing to their favorable performance and high efficiency; however, existing trackers still suffer from model drift caused by bound...

  • Article
  • Open Access
394 Views
23 Pages

15 February 2026

Long-term multivariate time series forecasting serves as a fundamental analytical tool across diverse domains, such as energy management, transportation analysis, and meteorology. However, conventional modeling paradigms often yield suboptimal result...

  • Letter
  • Open Access
5 Citations
9,334 Views
11 Pages

Wishart-Based Adaptive Temporal Filtering of Polarimetric SAR Imagery

  • Morton J. Canty,
  • Allan A. Nielsen,
  • Henning Skriver and
  • Knut Conradsen

30 July 2020

Temporal filtering for speckle reduction of polarimetric SARimages is described. The method is based on a sequential complex Wishart-based change detection algorithm which is applied to polarized SAR imagery, including the dual-polarization intensity...

  • Article
  • Open Access
4 Citations
3,050 Views
20 Pages

Adaptive Speckle Filter for Multi-Temporal PolSAR Image with Multi-Dimensional Information Fusion

  • Haoliang Li,
  • Xingchao Cui,
  • Mingdian Li,
  • Junwu Deng and
  • Siwei Chen

23 July 2023

Polarimetric synthetic aperture radar (PolSAR) is an important sensor for earth observation. Multi-temporal PolSAR images obtained by successive observations of the region of interest contain rich polarimetric–temporal–spatial information...

  • Article
  • Open Access
1 Citations
2,116 Views
19 Pages

Learning Adaptive Spatial Regularization and Temporal-Aware Correlation Filters for Visual Object Tracking

  • Liqiang Liu,
  • Tiantian Feng,
  • Yanfang Fu,
  • Chao Shen,
  • Zhijuan Hu,
  • Maoyuan Qin,
  • Xiaojun Bai and
  • Shifeng Zhao

17 November 2022

Recently, discriminative correlation filters (DCF) based trackers have gained much attention and obtained remarkable achievements for their high efficiency and outstanding performance. However, undesirable boundary effects occur when the DCF-based tr...

  • Article
  • Open Access
5 Citations
2,266 Views
13 Pages

The execution or imagination of a movement is reflected by a cortical potential that can be recorded by electroencephalography (EEG) as Movement-Related Cortical Potentials (MRCPs). The identification of MRCP from a single trial is a challenging poss...

  • Article
  • Open Access
8 Citations
4,081 Views
20 Pages

28 June 2022

Filtering for GRACE temporal gravity fields is a necessary step before calculating surface mass anomalies. In this study, we propose a new denoising and decorrelation kernel (DDK) filtering scheme called adaptive DDK filter. The involved error covari...

  • Article
  • Open Access
2 Citations
1,004 Views
31 Pages

9 June 2025

The proliferation of unmanned aerial vehicles has enabled cost-effective topographic surveys to be collected at high frequencies. However, terrain analyses rarely take advantage of the information provided by repeated observations. As a result, the a...

  • Article
  • Open Access
8 Citations
6,392 Views
22 Pages

28 May 2017

In this paper, a spatio-spectral-temporal filter considering an inter-channel correlation is proposed for the denoising of a color filter array (CFA) sequence acquired by CCD/CMOS image sensors. Owing to the alternating under-sampled grid of the CFA...

  • Article
  • Open Access
2,510 Views
21 Pages

UAV Visual Object Tracking Based on Spatio-Temporal Context

  • Yongxiang He,
  • Chuang Chao,
  • Zhao Zhang,
  • Hongwu Guo and
  • Jianjun Ma

22 November 2024

To balance the real-time and robustness of UAV visual tracking on a single CPU, this paper proposes an object tracker based on spatio-temporal context (STCT). STCT integrates the correlation filter and Siamese network into a unified framework and int...

  • Article
  • Open Access
2 Citations
2,717 Views
18 Pages

Event Stream Denoising Method Based on Spatio-Temporal Density and Time Sequence Analysis

  • Haiyan Jiang,
  • Xiaoshuang Wang,
  • Wei Tang,
  • Qinghui Song,
  • Qingjun Song and
  • Wenchao Hao

10 October 2024

An event camera is a neuromimetic sensor inspired by the human retinal imaging principle, which has the advantages of high dynamic range, high temporal resolution, and low power consumption. Due to the interference of hardware and software and other...

  • Article
  • Open Access
8 Citations
1,166 Views
21 Pages

25 June 2025

We propose an adaptive multi-timescale particle filter (AMTS-PF) for nonlinear state estimation in wastewater treatment plants (WWTPs) to address multi-scale temporal dynamics. The AMTS-PF decouples the problem into minute-level state updates and hou...

  • Article
  • Open Access
2,244 Views
26 Pages

22 September 2025

Object-Based Image Analysis (OBIA) generates high-dimensional features that frequently induce the curse of dimensionality, impairing classification efficiency and generalizability in high-resolution remote sensing images. To address these challenges...

  • Article
  • Open Access
282 Views
20 Pages

Time series anomaly detection plays a vital role in the supervision of complex systems, including spacecraft operations, industrial production lines, and Internet of Things infrastructures. However, the existing methods face two key challenges: (1) f...

  • Article
  • Open Access
11 Citations
2,920 Views
16 Pages

11 July 2019

This paper presents a despeckling method for multitemporal images acquired by synthetic aperture radar (SAR) sensors. The proposed method uses a scattering covariance matrix of each image patch as the basic processing unit, which can exploit both the...

  • Article
  • Open Access
1 Citations
1,016 Views
24 Pages

20 June 2025

Very high resolution (VHR) remote sensing change detection (CD) is crucial for monitoring Earth’s dynamics but faces challenges in capturing fine-grained changes and distinguishing them from pseudo-changes due to varying acquisition conditions....

  • Article
  • Open Access
7 Citations
3,573 Views
20 Pages

13 May 2019

In this paper, we propose a novel fuzzy expectation maximization (FEM) based Takagi-Sugeno (T-S) fuzzy particle filtering (FEMTS-PF) algorithm for a passive sensor system. In order to incorporate target spatial-temporal information into particle filt...

  • Feature Paper
  • Article
  • Open Access
303 Citations
18,249 Views
18 Pages

Earth observation (EO) sensors deliver data at daily or weekly intervals. Most land use and land cover classification (LULC) approaches, however, are designed for cloud-free and mono-temporal observations. The increasing temporal capabilities of toda...

  • Article
  • Open Access
882 Views
16 Pages

24 June 2025

Ground-based synthetic aperture radar (GBSAR) has been widely used in the fields of early warning of geologic hazards and deformation monitoring of engineering structures due to its characteristics of high spatial resolution, zero spatial baseline, a...

  • Article
  • Open Access
68 Citations
13,140 Views
33 Pages

22 July 2014

This paper presents a region-adaptive clutter rejection method for small target detection in sea-based infrared search and track. In the real world, clutter normally generates many false detections that impede the deployment of such detection systems...

  • Article
  • Open Access
3 Citations
2,111 Views
26 Pages

Particle Filter Tracking System Based on Digital Zoom and Regional Image Measure

  • Qisen Zhao,
  • Liquan Dong,
  • Xuhong Chu,
  • Ming Liu,
  • Lingqin Kong and
  • Yuejin Zhao

31 January 2025

To address the challenges of low accuracy and the difficulty in balancing a large field of view and long distance when tracking high-speed moving targets with a single sensor, an ROI adaptive digital zoom tracking method is proposed. In this paper, w...

  • Article
  • Open Access
13 Citations
3,307 Views
16 Pages

11 October 2022

Steady-State Visual Evoked Potential (SSVEP) recognition methods use a subject’s calibration data to differentiate between brain responses, hence, providing the SSVEP-based brain–computer interfaces (BCIs) with high performance. However,...

  • Article
  • Open Access
3 Citations
3,068 Views
20 Pages

A SqueeSAR Spatially Adaptive Filtering Algorithm Based on Hadoop Distributed Cluster Environment

  • Yongning Li,
  • Weiwei Song,
  • Baoxuan Jin,
  • Xiaoqing Zuo,
  • Yongfa Li and
  • Kai Chen

31 January 2023

Multi-temporal interferometric synthetic aperture radar (MT-InSAR) techniques analyze a study area using a set of SAR image data composed of time series, reaching millimeter surface subsidence accuracy. To effectively acquire the subsidence informati...

  • Article
  • Open Access
1,582 Views
21 Pages

21 October 2025

Accurate traffic flow prediction is pivotal for intelligent transportation systems; yet, existing spatial-temporal graph neural networks (STGNNs) struggle to jointly capture the long-term structural stability, short-term dynamics, and multi-scale tem...

  • Article
  • Open Access
155 Views
26 Pages

23 January 2026

Accurate spatiotemporal forecasting underpins high-stakes decision making in smart urban systems, from traffic control and energy scheduling to environment monitoring. Yet two persistent gaps limit current models: (i) spatial modules are often biased...

  • Article
  • Open Access
5 Citations
4,119 Views
20 Pages

Stego-STFAN: A Novel Neural Network for Video Steganography

  • Guilherme Fay Vergara,
  • Pedro Giacomelli,
  • André Luiz Marques Serrano,
  • Fábio Lúcio Lopes de Mendonça,
  • Gabriel Arquelau Pimenta Rodrigues,
  • Guilherme Dantas Bispo,
  • Vinícius Pereira Gonçalves,
  • Robson de Oliveira Albuquerque and
  • Rafael Timóteo de Sousa Júnior

This article presents an innovative approach to video steganography called Stego-STFAN, as by using a cheap model process to use the temporal and spatial domains together, they end up presenting fine adjustments in each frame, the Stego-STFAN had a P...

  • Article
  • Open Access
916 Views
21 Pages

Fusing Gradient, Intensity Accumulation, and Region Contrast for Robust Infrared Dim-Small Target Detection

  • Liqi Liu,
  • Rongguo Zhang,
  • Xinyue Ni,
  • Liyuan Li,
  • Xiaofeng Su and
  • Fansheng Chen

19 March 2025

Existing infrared small target detection methods often fail due to limited exploitation of spatiotemporal information, leading to missed detections and false alarms. To address these limitations, we propose a novel framework called Spatial–Temp...

  • Article
  • Open Access
19 Citations
4,260 Views
16 Pages

Context-Aware and Occlusion Handling Mechanism for Online Visual Object Tracking

  • Khizer Mehmood,
  • Abdul Jalil,
  • Ahmad Ali,
  • Baber Khan,
  • Maria Murad,
  • Wasim Ullah Khan and
  • Yigang He

Object tracking is still an intriguing task as the target undergoes significant appearance changes due to illumination, fast motion, occlusion and shape deformation. Background clutter and numerous other environmental factors are other major constrai...

  • Article
  • Open Access
6 Citations
6,492 Views
16 Pages

A Robust Visual Tracking Algorithm Based on Spatial-Temporal Context Hierarchical Response Fusion

  • Wancheng Zhang,
  • Yanmin Luo,
  • Zhi Chen,
  • Yongzhao Du,
  • Daxin Zhu and
  • Peizhong Liu

26 December 2018

Discriminative correlation filters (DCFs) have been shown to perform superiorly in visual object tracking. However, visual tracking is still challenging when the target objects undergo complex scenarios such as occlusion, deformation, scale changes a...

  • Article
  • Open Access
2,601 Views
9 Pages

2 October 2024

There is a growing need to facilitate the production of recorded music as independent musicians are now key in preserving the broader cultural roles of music. A critical component of the production of music is multitrack mixing, a time-consuming task...

  • Article
  • Open Access
5 Citations
2,293 Views
19 Pages

Adaptive GCN and Bi-GRU-Based Dual Branch for Motor Imagery EEG Decoding

  • Yelan Wu,
  • Pugang Cao,
  • Meng Xu,
  • Yue Zhang,
  • Xiaoqin Lian and
  • Chongchong Yu

13 February 2025

Decoding motor imagery electroencephalography (MI-EEG) signals presents significant challenges due to the difficulty in capturing the complex functional connectivity between channels and the temporal dependencies of EEG signals across different perio...

  • Article
  • Open Access
1,319 Views
26 Pages

Robust UAV Target Tracking Algorithm Based on Saliency Detection

  • Hanqing Wu,
  • Weihua Wang,
  • Gao Chen and
  • Xin Li

8 April 2025

Due to their high efficiency and real-time performance, discriminant correlation filtering (DCF) trackers have been widely applied in unmanned aerial vehicle (UAV) tracking. However, the robustness of existing trackers is still poor when facing compl...

  • Article
  • Open Access
3 Citations
2,820 Views
22 Pages

An Improved Multi-Target Tracking Method for Space-Based Optoelectronic Systems

  • Rui Zhu,
  • Qiang Fu,
  • Guanyu Wen,
  • Xiaoyi Wang,
  • Nan Liu,
  • Liyong Wang,
  • Yingchao Li and
  • Huilin Jiang

2 August 2024

Under space-based observation conditions, targets are subject to a large number of stars, clutter, false alarms, and other interferences, which can significantly impact the traditional Gaussian mixture probability hypothesis density (GM-PHD) filterin...

  • Article
  • Open Access
20 Citations
10,318 Views
22 Pages

Track Detection in Railway Sidings Based on MEMS Gyroscope Sensors

  • Antoni Broquetas,
  • Adolf Comerón,
  • Antoni Gelonch,
  • Josep M. Fuertes,
  • J. Antonio Castro,
  • Damià Felip,
  • Miguel A. López and
  • José A. Pulido

23 November 2012

The paper presents a two-step technique for real-time track detection in single-track railway sidings using low-cost MEMS gyroscopes. The objective is to reliably know the path the train has taken in a switch, diverted or main road, immediately after...

  • Article
  • Open Access
6 Citations
3,268 Views
17 Pages

15 May 2019

In this work, we introduce a temporal-spatial approach for infrared focal plane array (IRFPA) stripe nonuniformity correction in infrared images that generates visually appealing results. We posit that the nonuniformity appears as a striped structure...

  • Article
  • Open Access
353 Views
25 Pages

Distributed Interactive Simulation (DIS) systems are highly sensitive to temporal delays. Conventional Dead Reckoning (DR) algorithms suffer from limited prediction accuracy and are often inadequate in mitigating simulation latency. To address these...

  • Article
  • Open Access
913 Views
17 Pages

16 April 2025

Video satellites provide high-temporal-resolution remote sensing images that enable continuous monitoring of the ground for applications such as target tracking and airport traffic detection. In this paper, we address the problems of object occlusion...

  • Feature Paper
  • Review
  • Open Access
4 Citations
2,688 Views
70 Pages

29 May 2024

This comprehensive overview presents our continued efforts in high-order finite difference method (FDM) development for adaptive numerical dissipation control in the long-time integration of direct numerical simulation (DNS), large eddy simulation (L...

  • Article
  • Open Access
1 Citations
860 Views
26 Pages

Comparative Analysis of Tropospheric Correction Methods for Ground Deformation Monitoring over Mining Area with DS-InSAR

  • Yajie Meng,
  • Feng Zhao,
  • Yunjia Wang,
  • Liyong Li,
  • Bujun Hu,
  • Xianlong Xu,
  • Rui Wang,
  • Yifei Wei,
  • Kesheng Huang and
  • Lin Zhu
  • + 2 authors

24 November 2025

In recent years, differential synthetic aperture radar interferometry (DInSAR) has been widely used to monitor ground deformation induced by mineral resource exploitation. Compared with conventional DInSAR, InSAR time series (TS-InSAR) techniques off...

  • Article
  • Open Access
1,589 Views
42 Pages

17 December 2025

Financial time-series labeling remains fundamentally limited by three critical deficiencies: temporal rigidity (fixed horizons regardless of market conditions), scale blindness (single-resolution analysis), and correlation-causation conflation. These...

  • Article
  • Open Access
2 Citations
1,388 Views
21 Pages

3 June 2025

Accurate mechanical fault diagnosis of On-Load Tap Changers (OLTCs) remains crucial for power system reliability yet faces challenges from vibration signals’ non-stationary characteristics and limitations of conventional methods. This paper dev...

  • Article
  • Open Access
1,944 Views
31 Pages

10 September 2025

Underwater acoustic communication faces significant challenges including limited bandwidth, high propagation delays, severe multipath fading, and stringent energy constraints. While integrated sensing and communication (ISAC) has shown promise in rad...

  • Article
  • Open Access
2,885 Views
18 Pages

Intelligent LED Certification System in Mass Production

  • Galina Malykhina,
  • Dmitry Tarkhov,
  • Viacheslav Shkodyrev and
  • Tatiana Lazovskaya

20 April 2021

It is impossible to effectively use light-emitting diodes (LEDs) in medicine and telecommunication systems without knowing their main characteristics, the most important of them being efficiency. Reliable measurement of LED efficiency holds particula...

  • Article
  • Open Access
57 Citations
8,465 Views
23 Pages

Noise Reduction and Gap Filling of fAPAR Time Series Using an Adapted Local Regression Filter

  • Álvaro Moreno,
  • Francisco Javier García-Haro,
  • Beatriz Martínez and
  • María Amparo Gilabert

29 August 2014

Time series of remotely sensed data are an important source of information for understanding land cover dynamics. In particular, the fraction of absorbed photosynthetic active radiation (fAPAR) is a key variable in the assessment of vegetation primar...

  • Article
  • Open Access
18 Citations
4,876 Views
25 Pages

Adaptive Modeling of the Global Ionosphere Vertical Total Electron Content

  • Eren Erdogan,
  • Michael Schmidt,
  • Andreas Goss,
  • Barbara Görres and
  • Florian Seitz

4 June 2020

The Kalman filter (KF) is widely applied in (ultra) rapid and (near) real-time ionosphere modeling to meet the demand on ionosphere products required in many applications extending from navigation and positioning to monitoring space weather events an...

  • Article
  • Open Access
32 Citations
3,304 Views
25 Pages

MIRA-CAP: Memory-Integrated Retrieval-Augmented Captioning for State-of-the-Art Image and Video Captioning

  • Sabina Umirzakova,
  • Shakhnoza Muksimova,
  • Sevara Mardieva,
  • Murodjon Sultanov Baxtiyarovich and
  • Young-Im Cho

15 December 2024

Generating accurate and contextually rich captions for images and videos is essential for various applications, from assistive technology to content recommendation. However, challenges such as maintaining temporal coherence in videos, reducing noise...

  • Article
  • Open Access
3 Citations
913 Views
21 Pages

Research on Bearing Fault Diagnosis Method Based on MESO-TCN

  • Ruibin Gao,
  • Jing Zhu,
  • Yifan Wu,
  • Kaiwen Xiao and
  • Yang Shen

27 June 2025

To address the issues of information redundancy, limited feature representation, and empirically set parameters in rolling bearing fault diagnosis, this paper proposes a Multi-Entropy Screening and Optimization Temporal Convolutional Network (MESO-TC...

  • Article
  • Open Access
6 Citations
3,870 Views
15 Pages

8 March 2021

The use of multiple spatially distributed microphones allows performing spatial filtering along with conventional temporal filtering, which can better reject the interference signals, leading to an overall improvement of the speech quality. In this p...

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