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

The Institute of Electronics and Information Engineers (대한전자공학회)
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Lossless Video Coding Based on Pixel-wise Prediction

화소 단위 예측에 의한 무손실 영상 부호화

  • 남정학 (광운대학교 컴퓨터공학과) ;
  • 심동규 (광운대학교 컴퓨터공학과) ;
  • 이영렬 (세종대학교 인터넷공학과) ;
  • 오승준 (광운대학교 전자공학과) ;
  • 안창범 (광운대학교 전자공학과) ;
  • 박호종 (광운대학교 전자공학과) ;
  • 서정일 (한국전자통신연구원 방송미디어연구그룹) ;
  • 강경옥 (한국전자통신연구원 방송미디어연구그룹)
  • Published : 2006.11.25
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Abstract

The state-of-the-art H.264/AVC standard was designed for the lossy video coding so that it could not yield the best performance for lossless video coding. In this paper, we propose two efficient intra lossless coding methods by embedding a pixel-wise prediction into the H.264/AVC. One is based on the pixel-wise prediction for the residual signal of the H.264/AVC intra Prediction and the other suggests a newly additional intra prediction mode for the conventional intra prediction. We found that the proposed lossless coding algorithms could achieve approximately $12%{\sim}25%$ more bit saving compared to the H.264/AVC FRExt high profile for several test sequences in terms of a compression ratio.

최신 비디오 압축 표준인 H.264/AVC는 손실 압축을 근간으로 고안되었기 때문에 무손실 압축 방식에서는 최고의 효율을 얻을 수 없다. 본 논문에서는 H.264/AVC에 화소 단위의 예측을 적용한 두 가지 효과적인 인트라 무손실 부호화 방법을 제안한다 H.264/AVC의 인트라 후에 생성된 차분영상에 대해서 화소 단위 예측 방법과 기존의 인트라 예측 방법에 추가적인 인트라 예측 모드로서 화소 단위 예측 방법을 제안한다. 제안된 무손실 부호화 알고리즘은 대부분의 테스트 영상에서 기존의 H.264/AVC FRExt high profile과 비교하여 약 $12%{\sim}25%$ 정도 향상된 압축률을 얻을 수 있다.

Keywords

References

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