北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2007, Vol. 30 ›› Issue (3): 32-35.doi: 10.13190/jbupt.200703.32.yanj

• 论文 • 上一篇    下一篇

基于H.264-SVC编码结构优化的差错恢复编码方法

阎金 全子一 门爱东   

  1. 北京邮电大学 北京邮电大学 北京邮电大学
  • 收稿日期:2006-06-23 修回日期:2006-10-26 出版日期:2007-06-30 发布日期:2007-06-30
  • 通讯作者: 阎金

Error Resilient Video Coding in H.264-SVC extension

Yan Jin, Quan Zi-yi, Men Ai-dong   

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2006-06-23 Revised:2006-10-26 Online:2007-06-30 Published:2007-06-30
  • Contact: Yan Jin

摘要:

提出了一种在丢包环境下的基于H.264-SVC扩展的率失真(RD-rate distortion)优化的宏块模式判决模型。在编码器中,在基于块的基础上综合考虑了信源编码失真、时间可分级的等级B图像编码结构和误差扩散失真。在当前的H.264-SVC的丢包环境下宏块模式判决模型的基础上,结合H.264-SVC的等级B图像编码结构的特点,一个时间级的参数被加入到RD代价函数的计算中。实验结果表明,本方法比没有经过时间可分级编码结构优化的的差错恢复率失真模型的差错恢复性能要好。

关键词: H.264/AVC, 可分级视频编码, 率失真模型, 差错恢复

Abstract:

An efficient rate-distortion (RD) optimized macroblock mode decision algorithm for H.264-Scalable video coding (SVC) extension in packet loss environment is presented. The end-to-end distortion is estimated according to the hierarchy B picture coding structure of SVC and the error-propagated distortion stored in a distortion map. A parameter on temporal level is added to the RD optimized macroblock mode decision algorithm in current H.264-SVC test model to improve the error resilience performance of the encoded scalable streams. The simulation results show that the proposed method outperforms the RD optimized macroblock mode decision algorithm in current H.264-SVC test model.

Key words: H.264/AVC, Scalable video coding, rate-distortion model, error resilience

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