Hyunseok Ahn

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This paper proposes IoT device system supporting the self-powered generation and backscatter communication by using Wi-Fi signal. We design and implement the data link sequence and communication system. The proposed IoT device system transfers data by backscatter-modulating the power level of the ambient Wi-Fi packets, instead of communicating Wi-Fi(More)
In order to develop object and event detection algorithms for intelligent CCTVs, a large amount of ground truth data is required, and it takes a lot of time and cost to generate the data. To produce large amount of ground truth data, an efficient video annotation system which can support re-creations of new video annotation data by retrieving and editing(More)
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