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- W3080826078 abstract "In this paper, we propose to use commercial off-the-shelf (COTS) <i>monostatic</i> RFID devices (i.e. which use a single antenna at a time for both transmitting and receiving RFID signals to and from the tags) to monitor browsing activity of customers in front of display items in places such as retail stores. To this end, we propose <i>TagSee</i> , a multi-person imaging system based on monostatic RFID imaging. TagSee is based on the insight that when customers are browsing the items on a shelf, they stand between the tags deployed along the boundaries of the shelf and the reader, which changes the multi-paths that the RFID signals travel along, and both the RSS and phase values of the RFID signals that the reader receives change. Based on these variations observed by the reader, TagSee constructs a coarse grained image of the customers. Afterwards, TagSee identifies the items that are being browsed by the customers by analyzing the constructed images. The key novelty of this paper is on achieving browsing behavior monitoring of multiple customers in front of display items by constructing coarse grained images via robust, analytical model-driven deep learning based, RFID imaging. To achieve this, we first mathematically formulate the problem of imaging humans using monostatic RFID devices and derive an approximate analytical imaging model that correlates the variations caused by human obstructions in the RFID signals. Based on this model, we then develop a deep learning framework to robustly image customers with high accuracy. We implement TagSee scheme using a Impinj Speedway R420 reader and SMARTRAC DogBone RFID tags. TagSee can achieve a TPR of more than <inline-formula><tex-math notation=LaTeX>${sim }90%$</tex-math></inline-formula> and a FPR of less than <inline-formula><tex-math notation=LaTeX>${sim }10%$</tex-math></inline-formula> in multi-person scenarios using training data from just 3-4 users." @default.
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- W3080826078 date "2022-03-01" @default.
- W3080826078 modified "2023-09-28" @default.
- W3080826078 title "Monitoring Browsing Behavior of Customers in Retail Stores via RFID Imaging" @default.
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- W3080826078 doi "https://doi.org/10.1109/tmc.2020.3019652" @default.
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