대한전자공학회논문지SP (Journal of the Institute of Electronics Engineers of Korea SP)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

U-HDTV를 위한 향상된 병렬 비디오 부호화 기법

A Parallel Video Encoding Technique for U-HDTV

  • 정승원 (고려대학교 전자전기전파공학부) ;
  • 고성제 (고려대학교 전자전기전파공학부)
  • 투고 : 2010.08.19
  • 심사 : 2010.11.29
  • 발행 : 2011.01.25
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초록

Ultra-High Definition Television (U-HDTV) 는 차세대 TV로 불리는 실감 TV의 가장 유망한 요소 기술로 주목받고 있으며 이를 효과적으로 압축하기 위한 병렬 비디오 부호화 기술 개발의 필요성이 증대되고 있다. 기존의 병렬 부호화 기술은 영상을 공간적으로 분할하고 분할비디오 (sub-sequence)를 독립적으로 부호화 하는 방식을 사용하였다. 본 논문에서는 분할비디오간의 높은 상호상관 (cross-correlation)을 이용하여 부호화 효율을 향상하는 파이프라인 (pipeline) 구조의 병렬 부 복호화기를 제안한다. 실험결과를 통하여 제안하는 기술이 압축 효율을 향상시키며 균일한 화질의 분할비디오를 생성하는 것을 확인한다.

Ultra-High Definition Television (U-HDTV) is a promising candidate for the next generation television. Since the U-HDTV video signal requires a huge amount of data, parallel implementation of the U-HDTV compression system is highly demanding. In the conventional parallel video codec, a video is divided into sub-sequences and the sub-sequences are independently encoded. In this paper, for efficient parallel processing, we propose a pipelined encoding structure which exploits cross-correlation among the sub-sequences. The experimental results demonstrate that the proposed technique improves the coding efficiency and provides the sub-sequences of the balanced visual quality.

키워드

참고문헌

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