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Millimeter wave (mmWave) radars have attracted significant attention from both academia and industry due to their capability to operate in extreme weather conditions. However, they face challenges in terms of sparsity and noise…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Ruibin Zhang , Donglai Xue , Yuhan Wang , Ruixu Geng , Fei Gao

Millimeter-wave (mmWave) radar has attracted significant attention in robotics and autonomous driving. However, despite the perception stability in harsh environments, the point cloud generated by mmWave radar is relatively sparse while…

Robotics · Computer Science 2025-09-30 Ruixin Wu , Zihan Li , Jin Wang , Xiangyu Xu , Zhi Zheng , Kaixiang Huang , Guodong Lu

Millimeter-wave (mmWave) radar offers robust sensing capabilities in diverse environments, making it a highly promising solution for human body reconstruction due to its privacy-friendly and non-intrusive nature. However, the significant…

Computer Vision and Pattern Recognition · Computer Science 2025-03-05 Jiarui Yang , Songpengcheng Xia , Zengyuan Lai , Lan Sun , Qi Wu , Wenxian Yu , Ling Pei

This work proposes a mmWave radar's scene flow estimation framework supervised by data from a widespread visual-inertial (VI) sensor suite, allowing crowdsourced training data from smart vehicles. Current scene flow estimation methods for…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Kezhong Liu , Yiwen Zhou , Mozi Chen , Jianhua He , Jingao Xu , Zheng Yang , Chris Xiaoxuan Lu , Shengkai Zhang

The 4D millimeter-wave (mmWave) radar, with its robustness in extreme environments, extensive detection range, and capabilities for measuring velocity and elevation, has demonstrated significant potential for enhancing the perception…

Robotics · Computer Science 2024-05-09 Zeyu Han , Junkai Jiang , Xiaokang Ding , Qingwen Meng , Shaobing Xu , Lei He , Jianqiang Wang

This paper explores a machine learning approach for generating high resolution point clouds from a single-chip mmWave radar. Unlike lidar and vision-based systems, mmWave radar can operate in harsh environments and see through occlusions…

The millimeter-wave radar sensor maintains stable performance under adverse environmental conditions, making it a promising solution for all-weather perception tasks, such as outdoor mobile robotics. However, the radar point clouds are…

Computer Vision and Pattern Recognition · Computer Science 2024-04-10 Kai Luan , Chenghao Shi , Neng Wang , Yuwei Cheng , Huimin Lu , Xieyuanli Chen

Intelligent transportation systems require accurate and reliable sensing. However, adverse environments, such as rain, snow, and fog, can significantly degrade the performance of LiDAR and cameras. In contrast, 4D mmWave radar not only…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Xiangyuan Peng , Miao Tang , Huawei Sun , Kay Bierzynski , Lorenzo Servadei , Robert Wille

4D mmWave radar provides weather-robust, velocity-aware measurements and is more cost-effective than LiDAR. However, radar-only 3D detection still trails LiDAR-based systems because radar point clouds are sparse, irregular, and often…

Robotics · Computer Science 2026-02-17 Yichun Xiao , Runwei Guan , Fangqiang Ding

Millimetre-wave (mmWave) radars can generate 3D point clouds to represent objects in the scene. However, the accuracy and density of the generated point cloud can be lower than a laser sensor. Although researchers have used mmWave radars…

Signal Processing · Electrical Eng. & Systems 2023-02-01 Han Cui , Jiacheng Wu , Naim Dahnoun

In multimodal traffic monitoring, we gather traffic statistics for distinct transportation modes, such as pedestrians, cars and bicycles, in order to analyze and improve people's daily mobility in terms of safety and convenience. On account…

Signal Processing · Electrical Eng. & Systems 2020-03-06 Feng Jin , Arindam Sengupta , Siyang Cao , Yao-Jan Wu

Micro-aerial vehicles (MAVs) are becoming ubiquitous across multiple industries and application domains. Lightweight MAVs with only an onboard flight controller and a minimal sensor suite (e.g., IMU, vision, and vertical ranging sensors)…

Robotics · Computer Science 2021-05-03 Li Qingqing , Yu Xianjia , Jorge Peña Queralta , Tomi Westerlund

Millimetre-wave (mmWave) radar has emerged as an attractive and cost-effective alternative for human activity sensing compared to traditional camera-based systems. mmWave radars are also non-intrusive, providing better protection for user…

Machine Learning · Computer Science 2023-11-03 Han Cui , Shu Zhong , Jiacheng Wu , Zichao Shen , Naim Dahnoun , Yiren Zhao

A point cloud enhancement method for 4D mmWave radar imagery is proposed in this paper. Based on the patch antenna and MIMO array theories, the MIMO array with small redundancy and high SNR is designed to provide the probability of high…

Image and Video Processing · Electrical Eng. & Systems 2024-01-31 Qingmian Wan , Hongli Peng , Xing Liao , Kuayue Liu , Junfa Mao

Millimeter-wave (mmWave) radar provides reliable perception in visually degraded indoor environments (e.g., smoke, dust, and low light), but learning-based radar perception is bottlenecked by the scarcity and cost of collecting and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-25 Emily Bejerano , Federico Tondolo , Ayaan Qayyum , Xiaofan Yu , Xiaofan Jiang

The challenge of 3D multi-object tracking is achieving robustness in real-world applications, for example under adverse conditions and maintaining consistency as distance increases. To overcome these challenges, sensor fusion approaches…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Bingxue Xu , Emil Hedemalm , Ajinkya Khoche , Patric Jensfelt

Automated vehicles require an accurate perception of their surroundings for safe and efficient driving. Lidar-based object detection is a widely used method for environment perception, but its performance is significantly affected by…

Computer Vision and Pattern Recognition · Computer Science 2024-01-18 Raphael van Kempen , Tim Rehbronn , Abin Jose , Johannes Stegmaier , Bastian Lampe , Timo Woopen , Lutz Eckstein

Recent research has shown the effectiveness of mmWave radar sensing for object detection in low visibility environments, which makes it an ideal technique in autonomous navigation systems. In this paper, we introduce Radar to Point Cloud…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Yue Sun , Honggang Zhang , Zhuoming Huang , Benyuan Liu

Positional estimation is of great importance in the public safety sector. Emergency responders such as fire fighters, medical rescue teams, and the police will all benefit from a resilient positioning system to deliver safe and effective…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Zhuangzhuang Dai , Muhamad Risqi U. Saputra , Chris Xiaoxuan Lu , Niki Trigoni , Andrew Markham

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
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