基于H.264视频编解码DSP实现与优化  

Video Encoding & Decoding Based on H.264 and Its Realization and Optimization on DSP

作　　者：吴琼[1] 

机构地区：[1]宿迁学院,江苏宿迁223800

出　　处：《现代电子技术》2010年第4期55-57,共3页Modern Electronics Technique

基　　金：宿迁学院科研基金项目支持(711314010412)

摘　　要：H.264是最新的视频编码国际标准,是图像通信研究领域的热点问题之一,利用高性能数字信号处理器来实现H.264实时编解码是一种快速有效的方法,有助于H.264视频标准的迅速推广和应用。TI公司生产的DM64X系列芯片具有很强的并行处理能力和信号处理功能,是实现H.264编解码的理想平台。给出视频编解码在DSP中实现的一些关键问题,针对DM642的整体系统方案,设计出为H.264的实时实现搭建了良好的硬件平台,并给出系统的性能测试结果。解码速度达到了实时的效果,图像主观质量较好,无明显方块效应,码率也比较低。H. 264 is a new video international standard. It becomes an important content of image communication research field. Based on high - performance Digital Signal Processor（DSP） to implement H. 264 video Encoder is one of most efficient methods,which also helps to promote the application of H. 264. DM64X produced by TI Company have strong capacity of parallel processing and signal processing that it is considered to be just the ideal platform. The key points to realize video encoding in DSP. The whole system scheme based on DM642 is given. H. 264 is realized and the performance of this system is given. The decoding speed has achieved the real - time effect, the image subjective quality is good, not obvious block effect, the code rate is also quite low.

关 键 词：H.264标准 数字信号处理器 视频编解码 DM642 

分 类 号：TN919.81[电子电信—通信与信息系统]