基于H.264编码算法的高速CCD视频压缩系统设计

摘要

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 nanage 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.%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.