双核处理视频压缩系统的设计与实现

针对目前视频处理平台单核运算、效率不高、升级不方便的特点，提出了DSP＋FPGA双核并行处理的新型体系结构，同时发挥DSP能够高速处理数字信号和FPGA善于控制大数据量吞吐的特性，快速有效地实时实现了CIF格式图像的H．264视频压缩算法；同时对H．264视频压缩标准的快速预测算法进行了研究，并针对DSP硬件及指令特点实现了代码优化．结果表明DSP＋FPGA双核联合使用，提高了系统执行效率和灵活性，在压缩速度和压缩质量上都取得了良好的效果．

Design and Implementation of H.264 Video Compression On DSP + FGPA Dual-Core System

According to current video compression system that is single-core,less effective and hard to upgrade,a new architecture of DSP + FPGA dual-core system is introduced,which can implement parallel functions effectively.DSP has the ability of processing digital signal at a high speed and FPGA is good at controlling the flow of huge amount of data,therefore they can cooperate to implement the H.264 standard for CIF video compression in real-time.Meanwhile fast prediction algorithms of H.264 standard are researched,and programs are optimized based on the framework of DSP platform.The result shows that DSP + FPGA dual-core system can improve the efficiency and flexibility of the system and increase the compression speed and quality.