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• W1567466496 abstract "There are several studies that collect and store life-log for personal memory. This chapter explains about a system that can create someone’s life-log in an inexpensive way to share daily life events with family, friends or care-givers through simple text messaging with a notion to remote monitoring of someone’s wellbeing. In the developed world where people are usually busier than ever, ambient communications through mobile media or the Internet based communication can provide rich social connections to their loving ones ubiquitously whom they care about by sharing awareness information in a passive way. For users who wish to have a persistent existence through ambient communication – to let someone else to know about their daily activity – new technology is needed. Research that aims to simulate virtual living or logging daily events, while challenging and promising, is currently rare. Only very recently the detection of real-world activities has been attempted by processing multiple sensors data along with inference logic for real-world activities. Detecting or inferring human activity using such simple sensor data is often inaccurate, insufficient and expensive. Therefore, this chapter discusses a technology, an inexpensive alternative to other sensors (e.g., accelerometers, proximity sensors etc.) based approaches, to infer human activity from environmental sound cues and common-sense knowledgebase of everyday objects and concepts. A system prototype to log daily events to infer activities in ‘as you go’ manner from environmental sound cues is explained with a few case studies. The input of the system is the patterns of sounds that are usually produced from activities (e.g., toilet flushing), occurring environmentally (e.g., road sounds) or due to interaction with the objects (e.g., cooking utensils clattering). A robust signal processing processes the input sound signal and Hidden Markov Model (HMM) classifiers are developed to detect predetermined sound contexts. Based on the detected sounds and along with the commonsense knowledge regarding human activity, object interaction, ontology of human life (e.g., living pattern of a single old man, or an old couple) and temporal information (e.g., morning, noon etc.) inference engine is employed to detect the activity and the surrounding environment of the person. Preliminary results are encouraging with the accuracy rate for outdoor and indoor related sound categories for activities being above 67% and 61% respectively." @default.
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• W1567466496 date "2011-08-01" @default.
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• W1567466496 title "Recognition of Real-World Activities from Environmental Sound Cues to Create Life-Log" @default.
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• W1567466496 doi "https://doi.org/10.5772/22491" @default.
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