Adaptive rate estimation for H.264/AVC intra mode decision

Ke Ying Liao, Jar-Ferr Yang, Ming Ting Sun

研究成果: Conference contribution

1 引文 斯高帕斯(Scopus)

摘要

In this paper, a modified bit-rate estimation method is proposed to reduce the computation for 4×4 intra mode decision of H.264/AVC video encoder. The number of coded bits is modeled by a linear combination of existing coding parameters, which are highly related to the entropy coding of H.264/AVC. Furthermore, to improve the accuracy of the estimation, the proposed scheme is made adaptive to the information obtained from previously coded blocks. Comparing to the original rate distortion optimized (RDO) encoding process, which needs to calculate the actual encoded bits of H.264/AVC for each coding mode, the proposed adaptive rate estimation can save about 28% and 21% of the total encoding time for QCIF and VGA sequences, respectively. For the coding performance, the proposed method achieves nearly no loss in visual quality with only slight bit-rate increases.

原文English
主出版物標題2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
頁面1157-1160
頁數4
DOIs
出版狀態Published - 2008 九月 16
事件2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP - Las Vegas, NV, United States
持續時間: 2008 三月 312008 四月 4

出版系列

名字ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN(列印)1520-6149

Other

Other2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
國家United States
城市Las Vegas, NV
期間08-03-3108-04-04

All Science Journal Classification (ASJC) codes

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

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