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Rehabilitation is important to improve quality of life for mobility-impaired patients. Smart walkers are a commonly used solution that should embed automatic and objective tools for data-driven human-in-the-loop control and monitoring.…

Computer Vision and Pattern Recognition · Computer Science 2021-07-06 Manuel Palermo , Sara Moccia , Lucia Migliorelli , Emanuele Frontoni , Cristina P. Santos

The combination of deep unfolding with vector approximate message passing (VAMP) algorithm, results in faster convergence and higher sparse recovery accuracy than traditional compressive sensing approaches. However, deep unfolding alters…

Signal Processing · Electrical Eng. & Systems 2025-04-15 Haoyun Zhang , Chengyang Zhang , Xueqian Wang , Gang Li , Xiao-Ping Zhang

In this paper, we present 3D high resolution radar imaging process at millimeter-Wave (mmWave) frequencies by creating the effect of a large aperture synthetically. We use a low cost fully integrated Frequency Modulated Continuous Wave…

Signal Processing · Electrical Eng. & Systems 2021-09-16 Shahrokh Hamidi , Safieddin Safavi-Naeini

One-bit radar, performing signal sampling and quantization by a one-bit ADC, is a promising technology for many civilian applications due to its low-cost and low-power consumptions. In this paper, problems encountered by one-bit LFMCW radar…

Signal Processing · Electrical Eng. & Systems 2020-09-11 Benzhou Jin , Jiang Zhu , Qihui Wu , Yuhong Zhang , Zhiwei Xu

Semi-dense detector-free approaches (SDF), such as LoFTR, are currently among the most popular image matching methods. While SDF methods are trained to establish correspondences between two images, their performances are almost exclusively…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Matthieu Vilain , Rémi Giraud , Hugo Germain , Guillaume Bourmaud

This paper proposes an approach for the task of searching and detecting human using a convolutional neural network and a Quadcopter hardware platform. A pre-trained CNN model is applied to a Raspberry Pi B and a single camera is equipped at…

Robotics · Computer Science 2021-11-05 Nikite Mesvan

Radar sensors operating in the mmWave frequency range face challenges when used as indoor perception and imaging devices, primarily due to noise and multipath signal distortions. These distortions often impair the sensors' ability to…

Signal Processing · Electrical Eng. & Systems 2026-04-09 Stefan Hägele , Fabian Seguel , Driton Salihu , Marsil Zakour , Eckehard Steinbach

Four-dimensional (4D) Radar is a useful sensor for 3D object detection and the relative radial speed estimation of surrounding objects under various weather conditions. However, since Radar measurements are corrupted with invalid components…

Signal Processing · Electrical Eng. & Systems 2023-10-30 Seung-Hyun Kong , Dong-Hee Paek , Sangjae Cho

Purpose: Face detection is a needed component for the automatic analysis and assistance of human activities during surgical procedures. Efficient face detection algorithms can indeed help to detect and identify the persons present in the…

Computer Vision and Pattern Recognition · Computer Science 2019-06-13 Thibaut Issenhuth , Vinkle Srivastav , Afshin Gangi , Nicolas Padoy

Frequency Modulated Continuous Wave (FMCW) radar is a promising sensor for aided inertial navigation, due to its robustness in environments that challenge traditional alternatives, such as LiDAR and vision. However, its widespread adoption…

Robotics · Computer Science 2026-05-05 Morten Nissov , Kostas Alexis

Reliable humanoid-robot interaction (HRI) in household environments is constrained by two fundamental requirements, namely robustness to unconstrained user positions and preservation of user privacy. Millimeter-wave (mmWave) sensing…

Robotics · Computer Science 2026-01-13 Yuxuan Hu , Kuangji Zuo , Boyu Ma , Shihao Li , Zhaoyang Xia , Feng Xu , Jianfei Yang

We present a novel method for efficiently producing semi-dense matches across images. Previous detector-free matcher LoFTR has shown remarkable matching capability in handling large-viewpoint change and texture-poor scenarios but suffers…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Yifan Wang , Xingyi He , Sida Peng , Dongli Tan , Xiaowei Zhou

Human pose estimation involves detecting and tracking the positions of various body parts using input data from sources such as images, videos, or motion and inertial sensors. This paper presents a novel approach to human pose estimation…

In this work, we use a ceiling-mounted omni-directional camera to detect people in a room. This can be used as a sensor to measure the occupancy of meeting rooms and count the amount of flex-desk working spaces available. If these devices…

Computer Vision and Pattern Recognition · Computer Science 2020-07-10 Timothy Callemein , Kristof Van Beeck , Toon Goedemé

Human Activity Recognition supports applications in healthcare, manufacturing, and human-machine interaction. LiDAR point clouds offer a privacy-preserving alternative to cameras and are robust to illumination. We propose a HAR method based…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Sasan Sharifipour , Constantino Álvarez Casado , Le Nguyen , Tharindu Ekanayake , Manuel Lage Cañellas , Nhi Nguyen , Miguel Bordallo López

Robust and privacy-preserving indoor scene understanding remains a fundamental open problem. While optical sensors such as RGB and LiDAR offer high spatial fidelity, they suffer from severe occlusions and introduce privacy risks in indoor…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Kaichen Zhou , Laura Dodds , Sayed Saad Afzal , Fadel Adib

We investigate the problem of localizing multiple targets using a single set of measurements from a network of radar sensors. Such "single snapshot imaging" provides timely situational awareness, but can utilize neither platform motion, as…

Signal Processing · Electrical Eng. & Systems 2024-10-01 Anant Gupta , Ahmet Dundar Sezer , Upamanyu Madhow

Recent research has demonstrated the complementary nature of camera-based and inertial data for modeling human gestures, activities, and sentiment. Yet, despite its growing importance for environmental sensing as well as the advance of…

Databases · Computer Science 2025-11-11 Si Zuo , Yuqing Song , Sahar Golipoor , Ying Liu , Xujun Ma , Stephan Sigg

We study synthetic aperture radar (SAR) imaging and motion estimation of complex scenes consisting of stationary and moving targets. We use the classic SAR setup with a single antenna emitting signals and receiving the echoes from the…

Numerical Analysis · Mathematics 2015-06-11 Liliana Borcea , Thomas Callaghan , George Papanicolaou

Human activity recognition is seen of great importance in the medical and surveillance fields. Radar has shown great feasibility for this field based on the captured micro-Doppler ({\mu}-D) signatures. In this paper, a MIMO radar is used to…

Signal Processing · Electrical Eng. & Systems 2021-11-04 Fady Aziz , Omar Metwally , Pascal Weller , Urs Schneider , Marco F. Huber