DOI QR코드

DOI QR Code

HEVC 화면 내 예측을 위한 계층적 고속 모드 결정 알고리즘

Hierarchical Fast Mode Decision Algorithm for Intra Prediction in HEVC

  • Kim, Tae Sun (Department of Electrical and Computer Engineering, Ajou University) ;
  • Sunwoo, Myung Hoon (Department of Electrical and Computer Engineering, Ajou University)
  • 투고 : 2015.03.13
  • 심사 : 2015.05.22
  • 발행 : 2015.06.25

초록

본 논문은 HEVC를 위한 고속의 화면 내 예측 알고리즘을 제안한다. HEVC 화면 내 예측은 DC, Planar와 35개의 각모드를 포함해 총 35개의 모드를 가지고 있다. 화면 내 예측의 연산량을 줄이고 고속의 모드 결정을 지원하기 위해 본 논문은 계층적 모드 결정 방법(HMD)를 제안한다. 제안하는 HMD는 주로 후보 모드를 줄이는데 중점을 두고 있다. 실험 결과는 제안하는 HMD가 39.17%의 인코딩 시간 감소에도 불구하고 아주 작은 BDBR 성능 열화만 있는 것을 보여준다. 제안하는 HMD는 기존의 알고리즘에 비해 아주 작은 0.01 ~ 0.42%의 BDBR 상승만을 가지고 인코딩 시간을 평균적으로 14,13% ~ 19.37% 감소시킨다.

This paper proposes a fast intra prediction algorithm for the High Efficiency Video Coding (HEVC). HEVC has 35 modes, such as DC mode, Planar mode, and 33 angular modes for the intra-prediction. To reduce the complexity and to support fast decision for intra prediction, this paper proposes a hierarchical mode decision method (HMD). The proposed HMD mainly focuses on how to reduce the number of prediction modes. The experimental results show that the proposed HMD can reduce the encoding time about 39.17% with little BDBR loss. On average, the proposed HMD can achieve the encoding time saving e about 14.13 ~ 19.37% compared to that of the existing algorithms with slightly increasing 0.01 ~ 0.42% BDBR.

키워드

참고문헌

  1. ITU-T Recommendation H.265, "High efficiency video coding," International Telecommunication Union, Apr. 2013.
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