전자공학회논문지 (Journal of the Institute of Electronics and Information Engineers)

  • 제51권10호
  • /
  • Pages.154-163
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  • 2014
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  • 2287-5026(pISSN)
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  • 2288-159X(eISSN)
대한전자공학회 (The Institute of Electronics and Information Engineers)
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에지 및 상대적 RMD 비용을 고려한 HEVC 고속 화면내 부호화 모드 결정 방법

Edge and Relative RMD Cost based Fast Intra Prediction Mode Decision in HEVC

  • 권대혁 (한밭대학교 멀티미디어공학과) ;
  • 최해철 (한밭대학교 멀티미디어공학과)
  • Gwon, Dae-Hyeok (Dept. of Multimedia Engineering, Hanbat National University) ;
  • Choi, Haechul (Dept. of Multimedia Engineering, Hanbat National University)
  • 투고 : 2014.08.20
  • 심사 : 2014.09.30
  • 발행 : 2014.10.25
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초록

본 논문에서는 HEVC를 위한 고속 화면내 부호화 모드 결정 방법을 제안한다. 제안방법은 화면내 부호화의 RMD(Rough Mode Decision) 및 RDO(Rate-Distortion Optimization) 과정에서 고려하는 각 후보 수를 줄여 화면내 부호화 과정에서의 복잡도를 감소시킨다. RMD가 고려하는 후보 수를 줄이기 위하여 영상의 에지 방향성 및 강도를 활용하며, RDO가 고려하는 후보수를 줄이기 위하여 상대적 RMD cost 차이를 이용한다. 실험결과에서는 제안방법이 약 0.79% BD-rate의 부호화 손실만으로 26.81%의 부호화 복잡도를 감소시켰음을 보인다.

In this paper, there is suggested a fast intra prediction mode decision method in HEVC. To reduce the number of candidates in rough mode decision (RMD) process and rate-distortion optimization (RDO) process, the edge information and relative RMD cost are utilized. The experiment results show that the proposed method reduces encoding run-time by 26.81% with a negligible coding loss of 0.79% BD-rate on average.

키워드

참고문헌

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