基于DSP平台的AVS视频编码器设计优化  

Algorithms Design and Optimization of AVS Video Encoder Based on DSP

作　　者：张妍[1] 薛永林[1] 赵康[1] 

机构地区：[1]清华大学数字电视技术研究中心,北京100084

出　　处：《电视技术》2008年第12期25-28,共4页Video Engineering

摘　　要：介绍了在TMS320DM6446DSP平台上实现AVS视频编码器的算法设计与优化方法。在软件整体设计优化的基础上,重点对运动估计等算法进行了优化改进;同时针对平台特点给出结构优化方法,主要包括提高代码并行性及存储器和数据搬移的优化。测试结果表明,通过优化,在保证图像质量损失较小的情况下,编码器的编码速率有显著提高。In this paper, algorithms design and optimization of a AVS video encoder using TMS320DM6446 DSP of Texas Instruments are presented. On the basis of the overall design and optimization of software, algorithms such as motion estimation are mainly improved. According to the architecture of TMS320DM6446, the architecture level optimizations are used, which involves software pipeline and memory access efficiency. The test results show that the coding rate is dramatically improved, while the performance of video sequence is considerably good.

关 键 词：AVS标准 TMS320DM6446 算法优化 结构优化 

分 类 号：TN919.8[电子电信—通信与信息系统]