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- W2280474647 abstract "Object recognition on wearable devices using computer vision is too energy intensive and challenging when objects are similar looking, while low-power active radio frequency identification (RFID) systems suffer from imprecise orientation (angle and distance) estimates. To address this challenge, this paper presents a novel radio-optical based recognition system where a radio-optical transmitter, or tag, that emits a beacon whose infra-red (IR) signal strength is used for accurate relative orientation tracking of tagged objects at a wearable radio-optical receiver. A low-power radio link that conveys identity is used to reduce the battery drain by synchronizing the radio- optical transmitter and receiver so that extremely short optical pulses are sufficient for precise orientation estimation. Through extensive experiments with our prototype we show that our system can achieve orientation estimates with 1-2 degree accuracy and within 40cm ranging error, with a maximum range of 9m in typical indoor use cases. With a tag battery power consumption of 86µW, the radio-optical tags show potential to achieve about half a decade lifetimes." @default.
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- W2280474647 date "2015-09-01" @default.
- W2280474647 modified "2023-10-01" @default.
- W2280474647 title "Low-Power Radio-Optical Beacons for In-View Recognition" @default.
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- W2280474647 doi "https://doi.org/10.1109/vtcfall.2015.7391018" @default.
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