본 논문에서는 지상파 DTV 방송의 자막 데이터 추출을 통한 SAMI 자막파일 생성 방법을 제안한다. 자막 방송은 청각장애인, 노약자, 외국인 등 정보소외계층의 방송 접근권 확대를 통한 정보격차 해소를 목적으로 한다. 국내에서는 2007년 6월에 디지털TV 자막 방송 표준이 제정되었고, 2008년 현재 모든 방송서비스의 자막방송 의무화 실시를 앞두고 있다. 본 논문에서는 지상파 DTV 방송의 MPEG-2 Transport Stream으로부터 자막 데이터를 추출하는 방법을 설명하며, 추출된 자막 데이터와 시간정보를 이용한 동영상 자막파일(SAMI)의 생성 방법을 설명한다. DTV 자막 추출 및 SAMI 자막파일 생성기의 구현 실험을 통하여, PC 환경에서 범용적으로 사용되는 멀티미디어 재생기에서 생성된 자막파일의 사용이 가능함을 확인하였다.
KSP Keywords
MPEG-2
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