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Reconfigurable Intelligent Surfaces (RISs) are promising and relatively low-cost tools for improving signal propagation in wireless communications. An RIS assists a base station in optimizing the channel and maximizing its capacity by…

Signal Processing · Electrical Eng. & Systems 2023-02-01 Andrey Sayanskiy , Andrey Belov , Ruslan Yafasov , Andrey Lyulyakin , Alexander Sherstobitov , Stanislav Glybovski , Vladimir Lyashev

Millimeter-wave (mmWave) radar pointcloud offers attractive potential for 3D sensing, thanks to its robustness in challenging conditions such as smoke and low illumination. However, existing methods failed to simultaneously address the…

Image and Video Processing · Electrical Eng. & Systems 2023-09-28 Ruixu Geng , Yadong Li , Dongheng Zhang , Jincheng Wu , Yating Gao , Yang Hu , Yan Chen

The concept of reconfiguring wireless propagation environments using intelligent reflecting surfaces (IRS)s has recently emerged, where an IRS comprises of a large number of passive reflecting elements that can smartly reflect the impinging…

Information Theory · Computer Science 2020-05-05 Qurrat-Ul-Ain Nadeem , Hibatallah Alwazani , Abla Kammoun , Anas Chaaban , Merouane Debbah , Mohamed-Slim Alouini

We investigate reconfigurable intelligent surfaces (RISs) for the task of position and velocity estimation in non-LOS (NLOS) indoor scenarios, using a snapshot based multi-step estimation algorithm. We evaluate a compound RIS structure…

Signal Processing · Electrical Eng. & Systems 2026-02-16 Thomas Zemen , Musa Furkan Keskin , Moustafa Rahal , Thomas Wilding , Hamed Radpour , Markus Hofer , Benoit Denis , Henk Wymeersch

Current autonomous driving algorithms heavily rely on the visible spectrum, which is prone to performance degradation in adverse conditions like fog, rain, snow, glare, and high contrast. Although other spectral bands like near-infrared…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Youngwan Jin , Michal Kovac , Yagiz Nalcakan , Hyeongjin Ju , Hanbin Song , Sanghyeop Yeo , Shiho Kim

The unsupervised 3D object detection is to accurately detect objects in unstructured environments with no explicit supervisory signals. This task, given sparse LiDAR point clouds, often results in compromised performance for detecting…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Ruiyang Zhang , Hu Zhang , Hang Yu , Zhedong Zheng

Removing undesired reflection from an image captured through a glass surface is a very challenging problem with many practical application scenarios. For improving reflection removal, cascaded deep models have been usually adopted to…

Computer Vision and Pattern Recognition · Computer Science 2021-02-23 Yu Li , Ming Liu , Yaling Yi , Qince Li , Dongwei Ren , Wangmeng Zuo

Extensive research on Reconfigurable Intelligent Surfaces (RIS) has primarily focused on optimizing reflective coefficients for passive beamforming in specific target directions. This optimization typically assumes prior knowledge of the…

Signal Processing · Electrical Eng. & Systems 2025-12-05 Xiao Cai , Hei Victor Cheng , Daniel E. Lucani

Reconfigurable intelligent surface (RIS) is an attractive technology to improve the transmission rate of millimetre-wave (mmWave) communication systems. The previous {research} on RIS technology mainly focused on improving the transmission…

Signal Processing · Electrical Eng. & Systems 2022-11-01 Yunis Xanthos , Wanting Lyu , Songjie Yang , Chadi Assi , Xianbing Zou , Ning Wei

This paper proposes a new three dimensional (3D) networking architecture enabled by aerial intelligent reflecting surface (AIRS) to achieve panoramic signal reflection from the sky. Compared to the conventional terrestrial IRS, AIRS not…

Information Theory · Computer Science 2020-01-22 Haiquan Lu , Yong Zeng , Shi Jin , Rui Zhang

Vehicle detection in tunnels is crucial for traffic monitoring and accident response, yet remains underexplored. In this paper, we develop mmTunnel, a millimeter-wave radar system that achieves far-range vehicle detection in tunnels. The…

Networking and Internet Architecture · Computer Science 2025-09-09 Chenming He , Rui Xia , Chengzhen Meng , Xiaoran Fan , Dequan Wang , Haojie Ren , Jianmin Ji , Yanyong Zhang

The advancement of RS technology has enabled high-resolution Earth observation; however, interpreting these images using modern VFMs remains a significant challenge. Unlike object-centric natural images, RS imagery is fundamentally…

Computer Vision and Pattern Recognition · Computer Science 2026-03-20 Keyan Chen , Chenyang Liu , Bowen Chen , Wenyuan Li , Zhengxia Zou , Shijian Lu , Zhenwei Shi

mmWave radars offer excellent depth resolution even at very long ranges owing to their high bandwidth. But their angular resolution is at least an order-of-magnitude worse than camera and lidar systems. Hence, mmWave radar is not a capable…

Computer Vision and Pattern Recognition · Computer Science 2022-02-25 Akarsh Prabhakara , Diana Zhang , Chao Li , Sirajum Munir , Aswin Sankanaryanan , Anthony Rowe , Swarun Kumar

The growing popular awareness of personal privacy raises the following quandary: what is the new paradigm for collecting and protecting the data produced by ever-increasing sensor devices. Most previous studies on co-design of data…

Cryptography and Security · Computer Science 2024-06-03 Zuyan Wang , Jun Tao , Dika Zou

Reconfigurable Intelligent Surfaces (RIS) have emerged as a transformative technology capable of reshaping wireless environments through dynamic manipulation of electromagnetic waves. While extensive research has explored their theoretical…

Cryptography and Security · Computer Science 2025-12-19 Ziyu Chen , Yitong Shen , Jingzhe Zhang , Yao Zheng , Yili Ren , Xuyu Wang , Shiwen Mao , Hanqing Guo

In indoor environments, multi-robot visual (RGB-D) mapping and exploration hold immense potential for application in domains such as domestic service and logistics, where deploying multiple robots in the same environment can significantly…

Robotics · Computer Science 2024-11-06 Sai Krishna Ghanta , Ramviyas Parasuraman

In this work, we consider the target detection problem in a sensing architecture where the radar is aided by a reconfigurable intelligent surface (RIS), that can be modeled as an array of sub-wavelength small reflective elements capable of…

Signal Processing · Electrical Eng. & Systems 2022-03-14 Stefano Buzzi , Emanuele Grossi , Marco Lops , Luca Venturino

Advances in computer vision and machine learning techniques have led to significant development in 2D and 3D human pose estimation from RGB cameras, LiDAR, and radars. However, human pose estimation from images is adversely affected by…

Computer Vision and Pattern Recognition · Computer Science 2023-01-03 Jiaqi Geng , Dong Huang , Fernando De la Torre

Millimeter Wave (mmWave) Radar is gaining popularity as it can work in adverse environments like smoke, rain, snow, poor lighting, etc. Prior work has explored the possibility of reconstructing 3D skeletons or meshes from the noisy and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Anjun Chen , Xiangyu Wang , Shaohao Zhu , Yanxu Li , Jiming Chen , Qi Ye

Reconfigurable intelligent surfaces (RISs) will play a key role to establish reliable low-latency millimeter wave (mmWave) communication links for indoor automation and control applications. In case of a blocked line-of-sight between the…

Systems and Control · Electrical Eng. & Systems 2023-08-23 Hamed Radpour , Markus Hofer , Lukas Walter Mayer , Andreas Hofmann , Martin Schiefer , Thomas Zemen