摘要
在H.264/AVC视频标准中,自适应环路滤波器用于消除预测和变换过程中引入的块效应,提高编码性能,但它具有较高的复杂性,占据大量的运算时间。针对这一问题,设计和实现一种基于数字信号处理DSP平台的流水线设计方法,采用条件判断减少跳转,利用并行性加速运算。实验数据表明,该方法能提高环路滤波器的效率。
In H.264/AVC video coding standard, in-loop deblock filter is used for reducing the block artifact, and enhancing the coding efficiency. The highly adaptive processing on both sample level and block edge level makes the filter very complicated and difficult to perform efficiently on digital signal processor platform. In this paper, an efficient implementation of in-loop filter based on DSP platform is proposed. It uses conditional operation instead of branch in boundary strength decision processing. Pipeline optimization is designed to fit the DSP parallel function unit. The simulation results demonstrate the high efficiency of this optimization method.
出处
《计算机工程》
CAS
CSCD
北大核心
2009年第15期232-234,237,共4页
Computer Engineering
