최근 1인 가구가 증가함에 따라 1인 가구를 대상으로 한 범죄와 홀로 죽음을 맞이하는 고독사도 증가하고 있다. 이러한 사회문제를 해결하고자 집안에서 사용하는 셋톱박스를 활용하여 실내의 움직임을 감지하고 원격지에서 모니터링 할 수 있는 서비스 시스템을 구축하고자 한다. 실내 환경에서는 바람에 흔들리거나 선풍기와 같이 반복적으로 운동하는 물체 또는 기계로 인한 오경보가 발생될 수 있다. 또한 패턴이 화려한 벽지 또는 많은 물체가 배경에 존재하는 경우 노이즈로 인한 오류가 발생될 수 있다. 본 논문에서는 사용한 알고리즘이 안드로이드 플랫폼을 기반으로 한 임베디드 환경에 적용하기 용이하며, 복잡한 배경(노이즈)에서도 강한 특성을 보인다.
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