Earticle

초록

영어

In H.264 video compression standard, B frame bi-directional predictions and its DIRECT mode coding are included to enhance video compression efficiency. However, such tools require a complex mode decision process and result in a long computation time. Therefore, fast algorithms are crucial in implementing H.264. In this paper, to save B frame encoding time, a fast DIRECT mode prediction algorithm is proposed, which determines DIRECT mode at an early stage by optimal mode pattern matching. Simulations show that the proposed algorithm can determine DIRECT mode without a complex mode decision process for 42% more macroblocks and, on mis-determination for DIRECT mode, cut down its rate-distortion (RD) cost increment by half, compared with Jin’s algorithm. This enables a fast B frame encoding with less quality degradation.

목차

Abstract
 1. Introduction
 2. Fast Direct Mode Decision Algorithms
  2.1 Adaptive Fast Direct Mode Decision Algorithm using Mode and Lagrangian Cost Prediction for B Frame in H.264/AVC
  2.2 Fast Direct Mode Decision Algorithm based on Optimal Mode Pattern Searching
 3. Simulation Results
 4. Conclusions
 References

키워드

저자

• Seok-Pil Lee [ Korea Electronics Technology Institue, Seoul, Korea ]
• Neungsoo Park [ Dept. Of Computer Science & Engineering, Konkuk University Seoul, Korea ]
• Yungho Choi [ Dept. Of Electrical Engineering, Konkuk University Seoul, Korea ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Multimedia and Ubiquitous Engineering

• 간기

  월간

• pISSN

  1975-0080

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605