HEVC 이후의 차세대 비디오 부호화 기술
Future Video Coding Beyond HEVC
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초록
본 논문에서는 HEVC 이후 차세대 비디오 부호화 표준의 요구사항 및 유망 핵심 기술을 분석 소개한다. HEVC는 2013년 1월 표준화가 완료된 최신 국제 비디오 부호화 표준으로 기존 H.264/AVC에 비해 40~50%의 부호화 효율을 향상시키며 모바일, 스트리밍, 방송 등 다방면으로 응용 분야를 넓혀가고 있다. 반면, 국제 표준화 기구인 ISO/IEC 및 ITU-T에서는 점차 증가하고 있는 해상도, 프레임률, 비트심도뿐만 아니라 wide color gamut, high dynamic range, 5G network등을 고려한 HEVC 이후 차세대 비디오 부호화 표준의 제정을 위한 움직임을 시작하고 있다. 본 논문에서는 차세대 비디오 부호화 표준을 위한 주요 요구사항에 대하여 소개하고, 차세대 비디오 부호화의 유망 핵심 기술을 화면 내 예측, 화면 간 예측, 변환 부호화 및 엔트로피 부호화 기술로 분류하여 분석한다.
Abstract
This paper introduces the requirements and key techniques for future video coding standard beyond HEVC. HEVC is the state-of-the-art international standard for video coding which improves the coding performance of 40-50% compared with H.264/AVC and it is being widely used for mobile, streaming, broadcasting, and so on. However, international standard organizations, ISO/IE and ITU-T, take the first step to develop a future video coding standard which considers higher resolutions, frame-rates, bit-depths, wide color gamut, high dynamic range, and 5G network services. This paper presents the key requirements and recent technical progresses for the future video coding standard, which includes four categories such as intra, inter, transform, and entropy coding.
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