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Passenger counting is crucial for public transport vehicle scheduling and traffic capacity evaluation. However, most existing methods are either costly or with low counting accuracy, leading to the recent use of Wi-Fi signals for this…

Signal Processing · Electrical Eng. & Systems 2024-10-16 Jingtao Guo , Wenhao Zhuang , Yuyi Mao , Ivan Wang-Hei Ho

Data-efficient domain adaptation with only a few labelled data is desired for many robotic applications, e.g., in grasping detection, the inference skill learned from a grasping dataset is not universal enough to directly apply on various…

Computer Vision and Pattern Recognition · Computer Science 2020-08-21 Haiyue Zhu , Yiting Li , Fengjun Bai , Wenjie Chen , Xiaocong Li , Jun Ma , Chek Sing Teo , Pey Yuen Tao , Wei Lin

In real-world scenarios, human actions often fall outside the distribution of training data, making it crucial for models to recognize known actions and reject unknown ones. However, using pure skeleton data in such open-set conditions…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Kunyu Peng , Cheng Yin , Junwei Zheng , Ruiping Liu , David Schneider , Jiaming Zhang , Kailun Yang , M. Saquib Sarfraz , Rainer Stiefelhagen , Alina Roitberg

Recently, a massive number of deep learning based approaches have been successfully applied to various remote sensing image (RSI) recognition tasks. However, most existing advances of deep learning methods in the RSI field heavily rely on…

Image and Video Processing · Electrical Eng. & Systems 2021-12-08 Cheng Peng , Yangyang Li , Ronghua Shang , Licheng Jiao

Wi-Fi sensing detects human motions and activities by analysing the channel state information (CSI) derived from Wi-Fi transmissions. However, the impact of variable transmission traffic, which dictates the effective sampling rate and…

Machine Learning · Computer Science 2026-05-12 Guolin Yin , Junqing Zhang , Guanxiong Shen , Simon L. Cotton

Cross-correlation is a popular signal processing technique used in numerous location tracking systems for obtaining reliable range information. However, its efficient design and practical implementation has not yet been achieved on mote…

Other Computer Science · Computer Science 2016-06-14 Prasant Misra , Wen Hu , Mingrui Yang , Marco Duarte , Sanjay Jha

Gait is a unique biometric feature that can be recognized at a distance; thus, it has broad applications in crime prevention, forensic identification, and social security. To portray a gait, existing gait recognition methods utilize either…

Computer Vision and Pattern Recognition · Computer Science 2021-02-08 Hanqing Chao , Kun Wang , Yiwei He , Junping Zhang , Jianfeng Feng

We present a novel data-driven approach to perform smooth Wi-Fi/cellular handovers on smartphones. Our approach relies on data provided by multiple smartphone sensors (e.g., Wi-Fi RSSI, acceleration, compass, step counter, air pressure) to…

Networking and Internet Architecture · Computer Science 2020-06-16 Jonas Höchst , Artur Sterz , Alexander Frömmgen , Denny Stohr , Ralf Steinmetz , Bernd Freisleben

Wireless sensing technology has become prevalent in healthcare, smart homes, and autonomous driving due to its non-contact operation, penetration capabilities, and cost-effectiveness. As its applications expand, the technology faces…

Human-Computer Interaction · Computer Science 2024-12-05 Ruixu Geng , Jianyang Wang , Yuqin Yuan , Fengquan Zhan , Tianyu Zhang , Rui Zhang , Pengcheng Huang , Dongheng Zhang , Jinbo Chen , Yang Hu , Yan Chen

Measuring dataset similarity is fundamental in machine learning, particularly for transfer learning and domain adaptation. In the context of supervised learning, most existing approaches quantify similarity of two data sets based on their…

Machine Learning · Statistics 2026-04-22 Shudong Sun , Hao Helen Zhang , Joseph C Watkins

Accurate channel state information (CSI) underpins reliable and efficient wireless communication. However, acquiring CSI via pilot estimation incurs substantial overhead, especially in massive multiple-input multiple-output (MIMO) systems…

Information Theory · Computer Science 2025-12-05 Guangming Liang , Mingjie Yang , Dongzhu Liu , Paul Henderson , Lajos Hanzo

Wi-Fi sensing has emerged as a significant technology in wireless sensing and Integrated Sensing and Communication (ISAC), offering benefits such as low cost, high penetration, and enhanced privacy. Currently, it is widely utilized in…

Signal Processing · Electrical Eng. & Systems 2025-05-13 Zijian Zhao

Radio Frequency Fingerprint Identification (RFFI) technology uniquely identifies emitters by analyzing unique distortions in the transmitted signal caused by non-ideal hardware. Recently, RFFI based on deep learning methods has gained…

Signal Processing · Electrical Eng. & Systems 2024-11-07 Ying Zhang , Qiang Li , Hongli Liu , Liu Yang , Jian Yang

Robustness to domain changes is a key capability for effective deployment of human action recognition systems in real-world scenarios, where action categories at inference can present important domain shifts or even unseen actions from…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Yannick Porto , Renato Martins , Thomas Chalumeau , Cedric Demonceaux

Zero-shot classification of image scenes which can recognize the image scenes that are not seen in the training stage holds great promise of lowering the dependence on large numbers of labeled samples. To address the zero-shot image scene…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Chun Liu , Suqiang Ma , Zheng Li , Wei Yang , Zhigang Han

Capsule Networks have shown encouraging results on \textit{defacto} benchmark computer vision datasets such as MNIST, CIFAR and smallNORB. Although, they are yet to be tested on tasks where (1) the entities detected inherently have more…

Machine Learning · Statistics 2018-05-21 James O' Neill

Gesture awareness plays a crucial role in promoting human-computer interface. Previous works either depend on customized hardware or need a priori learning of wireless signal patterns, facing downsides in terms of the privacy concern,…

Signal Processing · Electrical Eng. & Systems 2020-11-16 Zijun Han , Zhaoming Lu , Xiangming Wen , Wei Zheng , Jingbo Zhao , Lingchao Guo

Recently the problem of cross-domain object detection has started drawing attention in the computer vision community. In this paper, we propose a novel unsupervised cross-domain detection model that exploits the annotated data in a source…

Computer Vision and Pattern Recognition · Computer Science 2020-11-17 Zhen Zhao , Yuhong Guo , Jieping Ye

In recent years, channel state information (CSI) at sub-6 GHz has been widely exploited for Wi-Fi sensing, particularly for activity and gesture recognition. In this work, we instead explore mmWave (60 GHz) Wi-Fi signals for gesture…

Machine Learning · Computer Science 2023-06-30 Nabeel Nisar Bhat , Rafael Berkvens , Jeroen Famaey

Recently, deep learning has achieved promising performance in the change detection task. However, the deep models are task-specific and data set bias often exists, thus it is difficult to transfer a network trained on one multi-temporal…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Hongruixuan Chen , Chen Wu , Bo Du , Liangepei Zhang