嵌入式无线视频通信H.264编解码器的软件优化  

OPTIMISING SOFTWARE OF H. 264 CODEC OF EMBEDDED WIRELESS VIDEO COMMUNICATION

作　　者：酒康[1] 屈志毅[1] 刘艳民[1] 卢峰 陈勇[1] 郭爱平[1] 

机构地区：[1]兰州大学信息科学与工程学院,甘肃兰州730000 [2]兰州军区通信网络管理中心,甘肃兰州730000

出　　处：《计算机应用与软件》2010年第12期266-267,298,共3页Computer Applications and Software

摘　　要：由于无线信道易错、时变和带限的特点,给视频数据的无线传输带来了巨大的挑战。基于无线网络实时视频传输的特点以及嵌入式系统的技术开发环境,根据H.264编码算法要求,提出了内存管理和多线程调度优化设计,并对H.264视频编解码器进行了代码优化。由实验结果可知,使用该优化方案能满足嵌入式无线实时视频通信的要求。研究成果已应用于军用视频通信产品中。Because of the wireless channel error-prone,time-varying and band-limited characteristics,great challenges have been brought to wireless transmission of the video data. This paper proposes the memory management and the optimal design of multi-threaded scheduling based on the characteristics of wireless network in real-time video transmission and the technology development environment of the embedded system,as well as according to the requirements of the H. 264 coding algorithm,moreover,the code of the H. 264 video codec is also optimised. We can see from the experimental results that the optimisation scheme proposed in this paper is satisfactory to the requirements of embedded wireless real-time video communications. The result has been applied to military video communication products.

关 键 词：无线信道 视频通信 H.264 编解码器 优化 

分 类 号：TN919.8[电子电信—通信与信息系统]