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Deep learning methods have been widely used for Human Activity Recognition (HAR) using recorded signals from Iner-tial Measurement Units (IMUs) sensors that are installed on various parts of the human body. For this type of HAR, sev-eral…

Machine Learning · Computer Science 2025-02-10 Saeed Arabzadeh , Farshad Almasganj , Mohammad Mahdi Ahmadi

Hand gesture recognition has long been a hot topic in human computer interaction. Traditional camera-based hand gesture recognition systems cannot work properly under dark circumstances. In this paper, a Doppler Radar based hand gesture…

Computer Vision and Pattern Recognition · Computer Science 2017-11-23 Jiajun Zhang , Jinkun Tao , Jiangtao Huangfu , Zhiguo Shi

Radar based assisted living has received great amount of research interest in recent years. By employing the micro-Doppler features of indoor human motions, accurate recognition and classification of different types of movements become…

Signal Processing · Electrical Eng. & Systems 2020-01-30 Qiang An , Shuoguang Wang , Wenji Zhang , Hao Lv , Jianqi Wang , Shiyong Li , Ahmad Hoorfar

B-mode ultrasound tongue imaging is widely used in the speech production field. However, efficient interpretation is in a great need for the tongue image sequences. Inspired by the recent success of unsupervised deep learning approach, we…

Image and Video Processing · Electrical Eng. & Systems 2019-03-05 Bo Li , Kele Xu , Dawei Feng , Haibo Mi , Huaimin Wang , Jian Zhu

With the increasing use of high-precision system analysis programs in nuclear engineering, the number of high-fidelity computational data for accident simulation is exploding. Therefore, an algorithm that can achieve both automatic…

Signal Processing · Electrical Eng. & Systems 2022-08-30 Chengyuan Li , Meifu Li , Zhifang Qiu

Precision radial velocity (RV) measurements continue to be a key tool to detect and characterise extrasolar planets. While instrumental precision keeps improving, stellar activity remains a barrier to obtain reliable measurements below 1-2…

Color Doppler echocardiography enables visualization of blood flow within the heart. However, the limited frame rate impedes the quantitative assessment of blood velocity throughout the cardiac cycle, thereby compromising a comprehensive…

Image and Video Processing · Electrical Eng. & Systems 2024-08-22 Julia Puig , Denis Friboulet , Hang Jung Ling , François Varray , Jonathan Porée , Jean Provost , Damien Garcia , Fabien Millioz

In this paper, we propose a self-supervised learning solution for human activity recognition with smartphone accelerometer data. We aim to develop a model that learns strong representations from accelerometer signals, in order to perform…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Setareh Rahimi Taghanaki , Michael Rainbow , Ali Etemad

We investigate the problem of a monostatic pulse-Doppler radar transceiver trying to detect targets, sparsely populated in the radar's unambiguous time-frequency region. Several past works employ compressed sensing (CS) algorithms to this…

Information Theory · Computer Science 2013-09-24 Omer Bar-Ilan , Yonina C. Eldar

Facial expression analysis is central to understanding human behavior, yet existing coding systems such as the Facial Action Coding System (FACS) are constrained by limited coverage and costly manual annotation. In this work, we introduce…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Minh Tran , Maksim Siniukov , Zhangyu Jin , Mohammad Soleymani

We investigate the detection of weak complex-valued signals immersed in non-Gaussian, range-varying interference, with emphasis on maritime radar scenarios. The proposed methodology exploits a Complex-valued Variational AutoEncoder (CVAE)…

Accurately delineating the visual pathway (VP) is crucial for understanding the human visual system and diagnosing related disorders. Exploring multi-parametric MR imaging data has been identified as an important way to delineate VP.…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Alou Diakite , Cheng Li , Lei Xie , Yuanjing Feng , Ruoyou Wu , Jianzhong He , Hairong Zheng , Shanshan Wang

In zero-resource settings where transcribed speech audio is unavailable, unsupervised feature learning is essential for downstream speech processing tasks. Here we compare two recent methods for frame-level acoustic feature learning. For…

Computation and Language · Computer Science 2020-03-31 Petri-Johan Last , Herman A. Engelbrecht , Herman Kamper

Radar for indoor monitoring is an emerging area of research and development, covering and supporting different health and wellbeing applications of smart homes, assisted living, and medical diagnosis. We report on a successful RF sensing…

Signal Processing · Electrical Eng. & Systems 2020-03-24 Moeness G. Amin , Arun Ravisankar , Ronny G. Guendel

Most recent view-invariant action recognition and performance assessment approaches rely on a large amount of annotated 3D skeleton data to extract view-invariant features. However, acquiring 3D skeleton data can be cumbersome, if not…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Faegheh Sardari , Björn Ommer , Majid Mirmehdi

Radar sensors can be used for analyzing the induced frequency shifts due to micro-motions in both range and velocity dimensions identified as micro-Doppler ($\boldsymbol{\mu}$-D) and micro-Range ($\boldsymbol{\mu}$-R), respectively.…

Computer Vision and Pattern Recognition · Computer Science 2018-06-13 Sherif Abdulatif , Qian Wei , Fady Aziz , Bernhard Kleiner , Urs Schneider

The tremendous applications of human activity recognition are surging its span from health monitoring systems to virtual reality applications. Thus, the automatic recognition of daily life activities has become significant for numerous…

Signal Processing · Electrical Eng. & Systems 2020-07-10 Ivan Miguel Pires , Faisal Hussain , Nuno M. Garcia , Eftim Zdravevski

Nowadays, multi-sensor technologies are applied in many fields, e.g., Health Care (HC), Human Activity Recognition (HAR), and Industrial Control System (ICS). These sensors can generate a substantial amount of multivariate time-series data.…

Artificial Intelligence · Computer Science 2021-08-03 Yuxin Zhang , Yiqiang Chen , Jindong Wang , Zhiwen Pan

Remote Sensing Change Detection (RS-CD) aims to detect relevant changes from Multi-Temporal Remote Sensing Images (MT-RSIs), which aids in various RS applications such as land cover, land use, human development analysis, and disaster…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Wele Gedara Chaminda Bandara , Vishal M. Patel

Doppler echocardiography offers critical insights into cardiac function and phases by quantifying blood flow velocities and evaluating myocardial motion. However, previous methods for automating Doppler analysis, ranging from initial signal…

Image and Video Processing · Electrical Eng. & Systems 2023-11-16 Jaeik Jeon , Jiyeon Kim , Yeonggul Jang , Yeonyee E. Yoon , Dawun Jeong , Youngtaek Hong , Seung-Ah Lee , Hyuk-Jae Chang