基于TMS320DM6446的H.264编码器实现与优化  

Implementation and optimization of H.264 encoder on TMS320DM6446 platform

作　　者：李博丞[1] 严胜刚[1] 曲鹏[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《电子设计工程》2009年第5期120-123,共4页Electronic Design Engineering

摘　　要：为实现DSP平台下的视频信号压缩处理,研究了H.264视频编码标准的性能和技术特点。选用TMS320DM6446作为信号处理器,给出系统的硬件设计方案。简单分析了H.264几种开源软件,描述了X264编码器向TMS320DM6446平台的移植过程和优化方法,并重点研究改进算法结构和使用汇编指令优化的方法。实验结果表明,优化后的编码器在保证了较高图像质量的前提下,编码效率得到明显提高。To implement video compression on DSP system, the features of H.264 video coding standard is investigated. The design of hardware system was brought forward by selecting TMS320DM6446 as DSP.Several open sources of H.264 are analyzed. Then the implementation and optimization of X264 encoder based on DM6446 are described.The procedure of transplanting and many optimization methods applied is described.The optimization methods by improving algorithm structure and rewriting codes in assemble instruction are intensively studied.Experiment results indicated that the coding efficiency of encoder was increased, while high image quality was preserved.

关 键 词：视频压缩 编码器 数字信号处理 代码优化 

分 类 号：TN919.81[电子电信—通信与信息系统]