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A Consecutive Motion and Situation Recognition Mechanism to Detect a Vulnerable Condition Based on Android Smartphone

Choi, HS, Lee, GM and Rhee, WS A Consecutive Motion and Situation Recognition Mechanism to Detect a Vulnerable Condition Based on Android Smartphone. International Journal of Contents. ISSN 1738-6764 (Accepted)

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Human motion recognition is essential for user-centric services such as surveillance-based security, elderly condition monitoring, exercise tracking, daily calories expend analysis, etc. It is typically based on the movement data analysis such as the acceleration and angular velocity of a target user. The existing motion recognition studies are only intended to measure the basic information (e.g., user’s stride, number of steps, speed) or to recognize single motion (e.g., sitting, running, walking). Thus, a new mechanism is required to identify the transition of single motions for assessing a user’s consecutive motion more accurately as well as recognizing the user’s body and surrounding situations arising from the motion. Thus, in this paper, we collect the human movement data through Android smartphones in real time for five targeting single motions and propose a mechanism to recognize a consecutive motion including transitions among various motions and an occurred situation, with the state transition model to check if a vulnerable (life-threatening) condition, especially for the elderly, has occurred or not. Through implementation and experiments, we demonstrate that the proposed mechanism recognizes a consecutive motion and a user’s situation accurately and quickly. As a result of the recognition experiment about mix sequence likened to daily motion, the proposed adoptive weighting method showed 4% (Holding time=15 sec), 88% (30 sec), 6.5% (60 sec) improvements compared to static method.

Item Type: Article
Uncontrolled Keywords: motion classification; situation recognition; movement sensor; vulnerable condition; Android smartphones
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Q Science > QA Mathematics > QA76 Computer software
Divisions: Computer Science & Mathematics
Publisher: The Korea Contents Association
Date Deposited: 12 Oct 2020 12:36
Last Modified: 12 Oct 2020 12:45
URI: https://researchonline.ljmu.ac.uk/id/eprint/13826

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