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Open AccessArticle

Fusing Thermopile Infrared Sensor Data for Single Component Activity Recognition within a Smart Environment

School of Computing, Ulster University, Belfast BT37 0QB, Northern Ireland, UK
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J. Sens. Actuator Netw. 2019, 8(1), 10; https://doi.org/10.3390/jsan8010010
Received: 12 December 2018 / Revised: 11 January 2019 / Accepted: 11 January 2019 / Published: 18 January 2019
(This article belongs to the Special Issue Sensor and Actuator Networks: Feature Papers)
To provide accurate activity recognition within a smart environment, visible spectrum cameras can be used as data capture devices in solution applications. Privacy, however, is a significant concern with regards to monitoring in a smart environment, particularly with visible spectrum cameras. Their use, therefore, may not be ideal. The need for accurate activity recognition is still required and so an unobtrusive approach is addressed in this research highlighting the use of a thermopile infrared sensor as the sole means of data collection. Image frames of the monitored scene are acquired from a thermopile infrared sensor that only highlights sources of heat, for example, a person. The recorded frames feature no discernable characteristics of people; hence privacy concerns can successfully be alleviated. To demonstrate how thermopile infrared sensors can be used for this task, an experiment was conducted to capture almost 600 thermal frames of a person performing four single component activities. The person’s position within a room, along with the action being performed, is used to appropriately predict the activity. The results demonstrated that high accuracy levels, 91.47%, for activity recognition can be obtained using only thermopile infrared sensors. View Full-Text
Keywords: thermopile; infrared; sensors; activity recognition; image processing; sensor fusion; activities of daily living; computer vision; smart environments thermopile; infrared; sensors; activity recognition; image processing; sensor fusion; activities of daily living; computer vision; smart environments
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Burns, M.; Morrow, P.; Nugent, C.; McClean, S. Fusing Thermopile Infrared Sensor Data for Single Component Activity Recognition within a Smart Environment. J. Sens. Actuator Netw. 2019, 8, 10.

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