본 논문에서는 기준 영상은 방송 스트림으로 전송하고, 부가 영상은 스트리밍 콘텐츠 형태로 수신측에 전달하여 3DTV 서비스를 제공할 수 있는 하이브리드 3DTV 시스템을 제안한다. 부가 영상을 파일 기반으로 수신측에 전달할 경우 전체 파일을 다운로드해야만 3DTV 서비스 이용이 가능하다는 문제점을 해결하기 위하여 본 논문에서는 MPEG DASH 규격을 이용하여 부가 영상을 전송하였다. 또한 서로 다른 전송망을 기반으로 전달되는 기준 영상과 부가 영상을 프레임 단위로 동기화하기 위한 정보를 실시간 방송 스트림에 포함하여 기준 영상 전송 시 함께 전송하였다. 이와 같은 방법으로 스트리밍 콘텐츠 기반 하이브리드 3DTV 송신 및 수신 시스템을 구현한 결과 사용자가 서비스에 접근 시점부터 부가 영상 데이터를 수신하고 이를 기준 영상과 동기화하여 3DTV 서비스의 제공이 가능함을 확인하였다.
KSP Keywords
MPEG-DASH
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