基于FPGA视频和图像处理系统的FIFO缓存技术

FIFO Cache Technology in Video and Image Processing System Based on FPGA

通过研究视频图像处理和视频图像帧格式以及FIFO缓存技术,提出了基于FPGA的视频图像处理系统设计。该设计运用帧间差分法、同步FIFO缓存设计,有效避免了图像处理系统设计中亚稳态和异步信号处理等时序性难题,实现了视频图像序列的动态目标检测系统设计。ChipScope在线逻辑分析结果表明,所设计的系统具有实时的视频图像处理性能,与基于外接存储器缓存的系统设计相比较,稳定性更高,实时性更好,功耗更低。

Through the research of the video image processing,the video image frame format and the FIFO cache technology,a video image processing system design based on FPGA is proposed. The design seheme makes use of the frame difference method and the sychronous FIFO cache design ,which can effectively avoid the inevitable problems of the metastability and asynchronous signal timing in the image processing system design ,and complete the dynam- ic target detection system design of the video image sequence. ChipScope logic analysis results indicate that the design has a real-time video image processing performance. Compared to the external memory cache s）stem design ,this system is higher stability,better real-time character and lower power consumption.