计算机应用

• 图形图像处理 • 上一篇    下一篇

一种改进的快速H.264/AVC帧内预测Pan算法

田晓冬   

  1. 南京航空航天大学
  • 收稿日期:2006-04-03 修回日期:1900-01-01 发布日期:2006-10-01 出版日期:2006-10-01
  • 通讯作者: 田晓冬

Improved Pan algorithm for fast intraprediction in H.264/AVC video coding

XiaoDong Tian   

  • Received:2006-04-03 Revised:1900-01-01 Online:2006-10-01 Published:2006-10-01
  • Contact: XiaoDong Tian

摘要: 对基于边缘方向直方图的快速帧内预测Pan算法进行了改进,应用了帧内Intra_4×4和Intra_16×16块类型选择以及4×4亮度块模式选择提前中止技术。实验结果表明,该方法在保证图像失真度和码率性能的前提下,单帧编码时间较Pan算法减少了29.093%,较大幅度地加快了帧内模式决策速度。

关键词: H.264/AVC, 帧内预测, Pan算法, MPEG, 视频编码

Abstract: Fast Intraprediction Pan algorithm based on edge directional histogram was improved in this paper. The block type selection method (Intra_4×4 and Intra_16×16) and early termination technology for 4×4 luma block mode decision were employed. Experimental results show that the one-frame scramble time of fast intrapredicton algorithm, compared with Pan algorithm, is reduced by 29.093% with negligible loss of peak signal-to-noise ratio.

Key words: H.264/AVC, intraprediction, Pan algorithm, MPEG, video coding