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Robust indoor ego-motion estimation has attracted significant interest in the last decades due to the fast-growing demand for location-based services in indoor environments. Among various solutions, frequency-modulated continuous-wave…

Signal Processing · Electrical Eng. & Systems 2020-10-27 Yasin Almalioglu , Mehmet Turan , Chris Xiaoxuan Lu , Niki Trigoni , Andrew Markham

4D millimeter wave radars (4D radars) are new emerging sensors that provide point clouds of objects with both position and radial velocity measurements. Compared to LiDARs, they are more affordable and reliable sensors for robots'…

Robotics · Computer Science 2025-12-18 Xingyi Li , Han Zhang , Ziliang Wang , Yukai Yang , Weidong Chen

mmWave radar has been shown as an effective sensing technique in low visibility, smoke, dusty, and dense fog environment. However tapping the potential of radar sensing to reconstruct 3D object shapes remains a great challenge, due to the…

Image and Video Processing · Electrical Eng. & Systems 2021-08-29 Yue Sun , Zhuoming Huang , Honggang Zhang , Zhi Cao , Deqiang Xu

One key vertical application that will be enabled by 6G is the automation of the processes with the increased use of robots. As a result, sensing and localization of the surrounding environment becomes a crucial factor for these robots to…

Signal Processing · Electrical Eng. & Systems 2021-02-23 Madhushanka Padmal , Dileepa Marasinghe , Vijitha Isuru , Nalin Jayaweera , Samad Ali , Nandana Rajatheva

Human motion sensing plays a crucial role in smart systems for decision-making, user interaction, and personalized services. Extensive research that has been conducted is predominantly based on cameras, whose intrusive nature limits their…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Fangqiang Ding , Zhen Luo , Peijun Zhao , Chris Xiaoxuan Lu

Millimeter wave radars are popularly used in last-mile radar-based defense systems. Detection of low-altitude airborne target using these radars at low-grazing angles is an important problem in the field of electronic warfare, which becomes…

Signal Processing · Electrical Eng. & Systems 2019-02-15 Martins Ezuma , Ozgur Ozdemir , Chethan Kumar Anjinappa , Wahab Ali Gulzar , Ismail Guvenc

Safe highway autonomy for heavy trucks remains an open and unsolved challenge: due to long braking distances, scene understanding of hundreds of meters is required for anticipatory planning and to allow safe braking margins. However,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Filippo Ghilotti , Edoardo Palladin , Samuel Brucker , Adam Sigal , Mario Bijelic , Felix Heide

This paper presents RFconstruct, a framework that enables 3D shape reconstruction using commercial off-the-shelf (COTS) mmWave radars for self-driving scenarios. RFconstruct overcomes radar limitations of low angular resolution,…

Image and Video Processing · Electrical Eng. & Systems 2025-04-18 Samah Hussein , Junfeng Guan , Swathi Narashiman , Saurabh Gupta , Haitham Hassanieh

With its small size, low cost and all-weather operation, millimeter-wave radar can accurately measure the distance, azimuth and radial velocity of a target compared to other traffic sensors. However, in practice, millimeter-wave radars are…

Signal Processing · Electrical Eng. & Systems 2023-07-19 Lulu Liu , Runwei Guan , Fei Ma , Jeremy Smith , Yutao Yue

The 4D Millimeter wave (mmWave) radar is a promising technology for vehicle sensing due to its cost-effectiveness and operability in adverse weather conditions. However, the adoption of this technology has been hindered by sparsity and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-06 Jianan Liu , Qiuchi Zhao , Weiyi Xiong , Tao Huang , Qing-Long Han , Bing Zhu

Accurate precise positioning at millimeter wave frequencies is possible due to the large available bandwidth that permits precise on-the-fly time of flight measurements using conventional air interface standards. In addition, narrow antenna…

Information Theory · Computer Science 2019-08-27 Ojas Kanhere , Shihao Ju , Yunchou Xing , Theodore S. Rappaport

The NavINST Laboratory has developed a comprehensive multisensory dataset from various road-test trajectories in urban environments, featuring diverse lighting conditions, including indoor garage scenarios with dense 3D maps. This dataset…

In contemporary society, the pressing challenge of preserving user privacy clashes with the imperative for smart buildings to efficiently manage their resources, particularly in the context of occupancy monitoring for optimized energy…

Signal Processing · Electrical Eng. & Systems 2024-02-01 Valentín Barral , Tomás Domínguez-Bolaño , Carlos J. Escudero , José A. García-Naya

Autonomous vehicles and robots rely on accurate odometry estimation in GPS-denied environments. While LiDARs and cameras struggle under extreme weather, 4D mmWave radar emerges as a robust alternative with all-weather operability and…

Robotics · Computer Science 2026-01-28 Zeyu Han , Shuocheng Yang , Minghan Zhu , Fang Zhang , Shaobing Xu , Maani Ghaffari , Jianqiang Wang

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

Target detection is pivotal for modern urban computing applications. While image-based techniques are widely adopted, they falter under challenging environmental conditions such as adverse weather, poor lighting, and occlusion. To improve…

Image and Video Processing · Electrical Eng. & Systems 2024-02-29 Chen Zhu , Zhouxiang Zhao , Zejing Shan , Lijie Yang , Sijie Ji , Zhaohui Yang , Zhaoyang Zhang

We introduce DIODE, a dataset that contains thousands of diverse high resolution color images with accurate, dense, long-range depth measurements. DIODE (Dense Indoor/Outdoor DEpth) is the first public dataset to include RGBD images of…

Gesture recognition is a pivotal technology in the realm of intelligent education, and millimeter-wave (mmWave) signals possess advantages such as high resolution and strong penetration capability. This paper introduces a highly accurate…

Human-Computer Interaction · Computer Science 2023-09-19 Qun Fang , YiHui Yan , GuoQing Ma

3D imaging is increasingly impacting areas such as space, defense, automation, medical and automotive industries. The most well-known optical 3D imaging systems are LIDAR systems that rely on Time of Flight (ToF) measurement. The depth…

Optics · Physics 2022-07-21 Koray Ürkmen , Emre Yüce

LiDAR-based 3D detection plays a vital role in autonomous navigation. Surprisingly, although autonomous vehicles (AVs) must detect both near-field objects (for collision avoidance) and far-field objects (for longer-term planning),…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Neehar Peri , Mengtian Li , Benjamin Wilson , Yu-Xiong Wang , James Hays , Deva Ramanan