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- W2059382364 abstract "최근에 H.264/AVC 베이스라인 프로파일은 많은 멀티미디어 응용기기에 사용되고 있다. 또한 양방향 예측을 위한 B 픽쳐를 지원하는 MPEG-2 메인 프로파일은 HDTV, DVD와 같은 많은 멀티미디어 응용기기에 적용되어 왔다. 따라서 MPEG-2 메인 프로파일에서 H.264 베이스라인 프로파일로의 트랜스코딩은 콘텐츠의 범용성을 높이기 위해 필요한 작업이다. 양방향 움직임 추정을 지원하지 않는 H.264/AVC 베이스라인 프로파일로의 전환을 위해 Group of Pictures 구조 변환은 필수적이다. 이러한 Group of Pictures 구조 변환을 포함하는 트랜스코딩 구조에 있어서 제안한 알고리듬은 예측된 움직임 벡터의 선형성 검사를 통한 적응적인 탐색 범위선택과 참조 영역 복잡성 정보를 이용한 적응적 모드 선택 방법을 통해 화질 열화를 최소화하며 계산상의 복잡성을 획기적으로 줄였다. Currently, H.264/AVC is used in many multimedia applications. Also, The MPEG-2 main profile which supports B pictures for bi-directional motion prediction is widely used in applications such as HDTV and DVD’s. Therefore, transcoding the MPEG-2 main profile to the H.264/AVC baseline is necessary for universal multimedia access. In this transcoding architecture including the GOP structure conversion, the proposed algorithms adopt the adaptive search range selection through the linearity test of a predictive motion vector and adaptive mode selection using the reference region complexity information. The proposed algorithms extremely reduce the computational complexity while maintaining the video quality." @default.
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- W2059382364 date "2009-01-30" @default.
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- W2059382364 title "Transcoding MPEG-2 to H.264/AVC in the GOP Structure Conversion" @default.
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- W2059382364 doi "https://doi.org/10.5909/jbe.2009.14.1.3" @default.
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