计算机工程 ›› 2010, Vol. 36 ›› Issue (2): 220-222.doi: 10.3969/j.issn.1000-3428.2010.02.078

• 多媒体技术及应用 • 上一篇    下一篇

基于H.264的快速帧间模式选择算法

孙力帆,普杰信   

  1. (河南科技大学电子信息工程学院,洛阳471003)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-01-20 发布日期:2010-01-20

Fast Inter-frame Mode Selection Algorithm Based on H.264 Standard

SUN Li-fan, PU Jie-xin   

  1. (College of Electronic Information Engineering, Henan University of Science & Technology, Luoyang 471003)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-01-20 Published:2010-01-20

摘要: 针对H.264视频编码器中计算量大的帧间模式选择过程,提出一种快速帧间模式选择算法。根据编码块的边缘特征信息和模式相关性,预测当前宏块可能的候选模式类型。统计并分析帧间编码的最佳模式分布,通过设定基于统计数据的自适应提前中止门限,对预测模式进行筛选,以获取最匹配块模式。实验结果表明该算法能在保证重构图像质量与编码性能的情况下,减少51%~68%的编码时间,降低编码器的计算复杂度。

关键词: H.264标准, 模式选择, 边缘信息, 帧间预测

Abstract: Aiming at the inter-frame mode selection process with large calculation of H.264 video encoder, this paper proposes a fast inter-frame mode selection algorithm. According to the edge feature information and mode correlation of encoding block, the candidate mode type of current macro-block is forecasted. The best mode distribution of inter-frame encoder is counted and analyzed. Scale of all the modes is restricted by setting self-adaptive threshold for early termination to get most matching block mode. Experimental results show that the algorithm can decrease the encoding time by 51% to 68% and reduce the computational complexity of encoder while maintaining quality and coding performance of reconfiguration image.

Key words: H.264 standard, mode selection, edge information, inter-frame prediction

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