基于H.264编码算法的高速CCD视频压缩系统设计  

Design of CCD Video Compression System Based on H.264 Coding Algorithm

作　　者：李进[1,2] 金龙旭[1] 韩双丽[1] 陶宏江[1] 张然峰[1] 李国宁[1] 朱鹏[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院研究生院,北京100039

出　　处：《电视技术》2013年第3期52-54,66,共4页Video Engineering

基　　金：国家"863"高技术研究发展计划基金资助课题(86325113B)

摘　　要：设计了一种基于H.264视频编码算法的压缩系统。为了使压缩算法高效快速的运行,使用了DSP/BIOS资源来管理软硬件工作。为了高速交互数据,采用了EDMA高速搬运数据策略,进而保证了数据实时传输的需要。实验结果表明,该压缩系统可以稳定正常地工作,具有良好压缩性能,在压缩比40∶1～10∶1范围内,平均信噪比高于35 dB,满足了航空CCD相机应用的需求。A video compression system based on H. 264 compression algorithm is proposed in this paper. In order to perform efficiently and fast the compression algorithm, the system uses DSP/BIOS to manage the operation of hardware and software. To transmit efficiently data, a strategy of data moved efficiently based on EDMA is proposed, which ensure the real-time transmission. The experimental results showed that the proposed compression system can stably work and has good compressive property. In the compression ration range from 40：1 to 10： 1, the average peak signal to noise ratio of proposed compression system is higher than 35 dB. It meets the application of aviation CCD camera.

关 键 词：面阵CCD 视频压缩 H 264编码算法 DSP处理器 

分 类 号：TP919.81[自动化与计算机技术] TP391.4