AXI4-Stream总线的FPGA视频系统的开发研究

FPGA Video System Based on AXI4-Stream Bus

基于AXI4-Stream总线协议,在Xilinx公司提供的FPGA上实现了一个具有缺陷像素校正、色彩滤波阵列插值、图像降噪实时图像采集与显示功能的视频系统。AXI4-Stream总线协议由ARM公司提出,该协议专门针对视频、音频、数组等数据在片内通信设计。利用IP核进行嵌入式系统开发具有简化设计、缩短开发周期等明显优势。设计结果显示,基于AXI4-Stream总线的视频系统具有通用性强、独立、简洁易维护等优势。

Based on the AXI4-Stream bus protocol,a video system using Xilinx＇s FPGA is achieved,which has the functions of defective pixel correction, colour filter array interpolation, image noise reduction, image capturing and displaying in real time. AXI4-Stream bus protocol is proposed by ARM,which is designed for communication of video, audio and array data, etc. The system uses IP core for the embedded systems development because it can simplify the design and short the development cycle. The experiment results show that the video system based on the AXI4-Stream bus has the advantages of strong generality,independence,easy to maintain.