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The recognition of human activities based on WiFi Channel State Information (CSI) enables contactless and visual privacy-preserving sensing in indoor environments. However, poor model generalization, due to varying environmental conditions…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Julian Strohmayer , Martin Kampel

Recognizing user location with WiFi fingerprints is a popular approach for accurate indoor positioning problems. In this work, our goal is to interpret WiFi fingerprints into actual user locations. However, WiFi fingerprint data can be very…

Machine Learning · Computer Science 2021-01-27 Weizhu Qian , Franck Gechter

The fact that almost every person owns a smartphone device that can be precisely located is both empowering and worrying. If methods for accurate tracking of devices (and their owners) via WiFi probing are developed in a responsible way,…

Networking and Internet Architecture · Computer Science 2022-07-05 Syed Salman Alam , Muhammad Al-Qurishi , Riad Souissi

We introduce a novel approach to user authentication called Motion ID. The method employs motion sensing provided by inertial measurement units (IMUs), using it to verify the persons identity via short time series of IMU data captured by…

The emerging trend of ubiquitous and pervasive computing aims at embedding everyday devices such as wristwatches, smart phones, home video systems, autofocus cameras, intelligent vehicles, musical instruments, kitchen appliances etc. with…

Cryptography and Security · Computer Science 2021-05-10 Abhishek Gupta , Om Jee Pandey , Mahendra Shukla , Anjali Dadhich , Samar Mathur , Anup Ingle

WiFi Channel State Information (CSI) has shown promise for single-person gait identification, with numerous studies reporting high accuracy. However, multi-person identification remains largely unexplored, with the limited existing work…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Oliver Custance , Saad Khan , Simon Parkinson

Counting the number of people inside a building, from outside and without entering the building, is crucial for many applications. In this paper, we are interested in counting the total number of people walking inside a building (or in…

Signal Processing · Electrical Eng. & Systems 2017-11-17 Saandeep Depatla , Yasamin Mostofi

Modern smart phones are becoming helpful in the areas of Internet-Of-Things (IoT) and ambient health intelligence. By learning data from several mobile sensors, we detect nearness of the human body to a mobile device in a three-dimensional…

Computers and Society · Computer Science 2016-11-18 Sylvester Olubolu Orimaye , Foo Chuan Leong , Chen Hui Lee , Eddy Cheng Han Ng

Widespread adoption of indoor positioning systems based on WiFi fingerprinting is at present hindered by the large efforts required for measurements collection during the offline phase. Two approaches were recently proposed to address such…

Networking and Internet Architecture · Computer Science 2019-04-03 Giuseppe Caso , Luca De Nardis , Filip Lemic , Vlado Handziski , Adam Wolisz , Maria-Gabriella Di Benedetto

Laser interferometry (LFI)-based eye-tracking systems provide an alternative to traditional camera-based solutions, offering improved privacy by eliminating the risk of direct visual identification. However, the high-frequency signals…

Human-Computer Interaction · Computer Science 2025-05-13 Suleyman Ozdel , Johannes Meyer , Yasmeen Abdrabou , Enkelejda Kasneci

The cellular wireless networks are evolving towards acquiring newer capabilities, such as sensing, which will support novel use cases and applications. Many of these require indoor sensing capabilities, which can be realized by exploiting…

Information Theory · Computer Science 2025-07-08 Vijaya Yajnanarayana , Philipp Geuer , Satyam Dwivedi

WiFi-based localization became one of the main indoor localization techniques due to the ubiquity of WiFi connectivity. However, indoor environments exhibit complex wireless propagation characteristics. Typically, these characteristics are…

Networking and Internet Architecture · Computer Science 2015-08-04 Heba Aly , Moustafa Youssef

Indoor localization systems have become increasingly important in a wide range of applications, including industry, security, logistics, and emergency services. However, the growing demand for accurate localization has heightened concerns…

Artificial Intelligence · Computer Science 2023-06-06 Mohamed Mohsen , Hamada Rizk , Moustafa Youssef

Existing person re-identification methods rely on the visual sensor to capture the pedestrians. The image or video data from visual sensor inevitably suffers the occlusion and dramatic variations of pedestrian postures, which degrades the…

Computer Vision and Pattern Recognition · Computer Science 2020-09-07 Yiheng Liu , Wengang Zhou , Mao Xi , Sanjing Shen , Houqiang Li

The paper presents a novel Wi-Fi fingerprinting system that uses Channel State Information (CSI) data for fine-grained pedestrian localization. The proposed system exploits the frequency diversity and spatial diversity of the features…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Muhammad Emad-ud-din

Essentially a biometric system is a pattern recognition system which recognizes a user by determining the authenticity of a specific anatomical or behavioral characteristic possessed by the user. With the ever increasing integration of…

Computer Vision and Pattern Recognition · Computer Science 2012-01-19 Aamir Khan , Muhammad Farhan , Aasim Khurshid , Adeel Akram

Human activity recognition (HAR) holds significant importance in smart homes, security, and healthcare. Existing systems face limitations because of the insufficient spatial diversity provided by a limited number of antennas. Furthermore,…

Systems and Control · Electrical Eng. & Systems 2024-10-04 Junshuo Liu , Yunlong Huang , Wei Yang , Zhe Li , Rujing Xiong , Tiebin Mi , Xin Shi , Robert C. Qiu

Avatar refers to a representative of a physical user in the virtual world that can engage in different activities and interact with other objects in metaverse. Simulating the avatar requires accurate human pose estimation. Though…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Jianfei Yang , Yunjiao Zhou , He Huang , Han Zou , Lihua Xie

Integrated sensing and communication (ISAC) has emerged as a key technology for 6G wireless networks. In this paper, wireless sensing for the indoor multi-person tracking is explored with 6G mmWave ISAC systems. To limit the sensing…

Signal Processing · Electrical Eng. & Systems 2026-05-06 Chongrui Wang , Aimin Tang , Fei Gao , Chaojun Xu

Wireless signal-based human sensing technologies, such as WiFi, millimeter-wave (mmWave) radar, and Radio Frequency Identification (RFID), enable the detection and interpretation of human presence, posture, and activities, thereby providing…

Computer Vision and Pattern Recognition · Computer Science 2025-04-23 Zhenkui Yang , Zeyi Huang , Ge Wang , Han Ding , Tony Xiao Han , Fei Wang