본 논문에서는 MPEG-4 미세입자 계층 코딩 기법 등과 같은 망 상태 적응적인 계층적 스트리밍 코딩 기법에 적합한 새로운 스캔 방법을 소개한다. 제안된 스캔 방법은 사용자가 관심있는 영역의 영상정보 부호화를 최우선적으로 수행하여 전송하고 수신단에서도 해당 영상정보의 복호화을 최우선적으로 수행하도록 관리하여 복호된 비디오 영상의 주관적인 화질 향상을 보장하는 방법이다. 제안된 방법을 FGS 코딩 기법에 적용하면 특히 사용자가 관심 있는 영역의 주관적 화질을 약 1 dB ∼ 3 dB정도 향상시킬 수 있다.
KSP Keywords
Mpeg-4
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