본 논문에서는 대용량의 K-POP 모션캡처 데이터베이스에서 특정 안무구간을 검색하는 방법을 제안한다. 제안 기술은 저가형 3D 카메라를 이용하여 사용자가 직접 검색하고자 하는 동작을 생성하고 이를 질의동작으로 입력하여 원하는 안무동작을 검색하는 직관적인 검색 기술로서 구간 동작의 명칭이 존재하지 않는 K-POP 댄스를 검색하기 위한 핵심기술이다. 역동적인 댄스 자세를 표현하고 매칭하는 방법으로 관절 및 바디파트 간의 상대적인 각도 정보를 추출하고 비교하는 방법을 설명한다. 대용량의 모션캡쳐 데이터베이스를 고속으로 검색하기 위해서 안무동작의 핵심 자세를 분석하여 후보구간 집합을 빠르게 생성하고, 이들 집합에서 Dynamic Time Warping(DTW) 알고리즘으로 안무동작 간의 매칭거리를 보다 정밀하게 산출한다. 약 358분의 K-POP 댄스 곡 100곡에 대한 성능평가에서 92%의 검색정확도를 보였으며, 이는 K-POP 댄스 동작의 복잡성을 고려할 때 경쟁력 있는 성능치이다.
KSP Keywords
Dynamic Time Warping
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