基于FPGA和DSP的高速图像处理系统

Design of high-speed image processing system based on FPGA and DSP

为了提高图像处理系统的高性能和低功耗,提出了一种基于FPGA和DSP协同作业的高速图像处理嵌入式系统,其中DSP为主处理器,负责图像处理,而FPGA为协处理器,负责系统的所有数字逻辑。整个系统中FPGA和DSP的工作之间形成流水,同时借助于单片双口RAM(CY7C025AV-15AI)完成两者的通信,比使用单片DSP建立的处理系统性能提高25%左右。该系统具有可重构性,方便其他的算法于该系统上实现。

In order to improve the performance of image processing embedded system and reduce its power consumption,a high-efficient image processing embedded system which is based on the field programmable gate array and high-speed digital signal processor(DSP) is presented in this paper.DSP as a main processor is used to control the module of image process,and FPGA chip as a co-processor is used to control the data logic.In the whole system,a novel data transmission structure with a dual-port RAM(CY7C025AV-15AI) is applied to the high-speed real-time image data by ping-pong technique.Because all operation in the system is divided between the FPGA and DSP in the form of the pipelined,the performance of the system is 25% higher than that of the processing system based on the single DSP.The system is easy to transplant other algorithms into it due to its reconfigurability.