Implementation of Rule-based Smartphone Motion Detection Systems
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스마트폰에 내장된 각종 센서를 통해 획득할 수 있는 정보는 사용자의 움직임, 상황 등을 파악하고 분석하는데 유용하게 활용될 수 있다. 본 논문에서는 스마트폰의 가속도 센서와 자이로스코프 센서에서 얻은 정보를 분석하여 ‘I’, ‘S’, ‘Z’ 모션을 인식하는 두 가지 규칙기반 시스템을 제안한다. 먼저, 각 모션에 대한 가속도 및 각속도의 특성을 분석한다. 이를 기반으로 두 가지 종류의규칙기반 모션 인식 시스템을 제안하고 이를 안드로이드 앱으로 구현하여 각 모션에 대한 성능을비교한다. 두 가지 규칙기반시스템은 각 모션에 대해서 90% 이상의 인식률을 보이며 앙상블을 이용한 규칙기반 시스템은 다른 시스템보다 향상된 성능을 보인다.
Abstract
Information obtained through various sensors embedded in a smartphone can be used to identify and analyze user’s movements and situations. In this paper, we propose two rule-based motion detection systems that can detect three alphabet motions, ‘I’, ‘S’, and ‘Z’ by analyzing data obtained by the acceleration and gyroscope sensors in a smartphone. First of all, the characteristics of acceleration and angular velocity for each motion are analyzed. Based on the analysis, two rule-based systems are proposed and implemented as an android application and it is used to verify the detection performance for each motion. Two rule-based systems show high recognition rate over 90% for each motion and the rule-based system using ensemble shows better performance than another one.
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