摘要
H.264实时编码器的研究和实现是目前视频通信研究领域的一个热点问题,本文介绍了基于TMS320DM642平台的H.264编码器的优化,重点介绍了基于DM642的整数DCT变换、量化和匹配误差函数的汇编级优化,最后介绍了H.264编码器的EDMA及Cache级优化,实验结果表明本编码器基本能实现CIF实时编码。
The research and implementation of H.264 real-time coding technologies is one of the hot research topics in the area of image communication. The paper introduces how to optimize the H.264 encoder based on TMS320DM642. The emphasis is put on the assembly optimization for DCT and Quantization （Q）, Matching Error Function.In the end, EDMA and cache optimization strategy is proposed to realize H.264 encoder. The experiment results show that H.264 encoder can implement CIF video stream real-time.
出处
《微计算机信息》
2009年第5期159-161,共3页
Control & Automation
关键词
整数离散余弦变换
量化
匹配误差函数
Integer discrete cosine transform（DCT）
Quantization
Matching Error Function
