Journal ArticleDOI
GRfid: A Device-Free RFID-Based Gesture Recognition System
TLDR
In GRfid, after data are collected by hardware, the data is processed by a sequence of functional blocks, namely data preprocessing, gesture detection, profiles training, and gesture recognition, all of which are well-designed to achieve high performance in gesture recognition.Abstract:
Gesture recognition has emerged recently as a promising application in our daily lives. Owing to low cost, prevalent availability, and structural simplicity, RFID shall become a popular technology for gesture recognition. However, the performance of existing RFID-based gesture recognition systems is constrained by unfavorable intrusiveness to users, requiring users to attach tags on their bodies. To overcome this, we propose GRfid, a novel device-free gesture recognition system based on phase information output by COTS RFID devices. Our work stems from the key insight that the RFID phase information is capable of capturing the spatial features of various gestures with low-cost commodity hardware. In GRfid, after data are collected by hardware, we process the data by a sequence of functional blocks, namely data preprocessing, gesture detection, profiles training, and gesture recognition, all of which are well-designed to achieve high performance in gesture recognition. We have implemented GRfid with a commercial RFID reader and multiple tags, and conducted extensive experiments in different scenarios to evaluate its performance. The results demonstrate that GRfid can achieve an average recognition accuracy of $96.5$ and $92.8$ percent in the identical-position and diverse-positions scenario, respectively. Moreover, experiment results show that GRfid is robust against environmental interference and tag orientations.read more
Citations
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IoT Elements, Layered Architectures and Security Issues: A Comprehensive Survey.
TL;DR: This paper is presenting an overview about different layered architectures of IoT and attacks regarding security from the perspective of layers, and suggested a new secure layered architecture of IoT to overcome these issues.
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Narrowband Internet of Things: Evolutions, Technologies, and Open Issues
TL;DR: This paper surveys NB-IoT evolutions, technologies, and issues, spanning from performance analysis, design optimization, combination with other leading technologies, to implementation and application, to deliver a holistic understanding for the emerging wireless communication system.
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A review and categorization of techniques on device-free human activity recognition
TL;DR: A comprehensive survey of the work conducted over the period 2010-2018 in various areas of human activity recognition with main focus on device-free solutions and proposes a new taxonomy for categorizing the research work conducted in the field of activity recognition.
Proceedings ArticleDOI
RIO: A Pervasive RFID-based Touch Gesture Interface
Swadhin Pradhan,Eugene Chai,Karthikeyan Sundaresan,Lili Qiu,Mohammad A. Khojastepour,Sampath Rangarajan +5 more
TL;DR: This paper designs and develops RIO, a novel battery-free touch sensing user interface (UI) primitive that is robust even within a multi-tag environment, and builds a prototype of RIO that can continuously locate a finger during a swipe movement to within 3 mm of its actual position.
Journal ArticleDOI
An Exchange Market Approach to Mobile Crowdsensing: Pricing, Task Allocation, and Walrasian Equilibrium
TL;DR: An algorithm is devised that can find a Walrasian Equilibrium in polynomial time for a case of practical interest where the classes of mobile devices are bounded, and designs an efficient pattern search algorithm to reduce the search space, thus accelerating the search process accordingly.
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Proceedings ArticleDOI
Whole-home gesture recognition using wireless signals
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