【摘要】 为优化数字视频与Zynq-7000系统间高速数据流的传输质量,设计并实现了一种基于AXI4总线的数字视频采集系统。对外部输入的DVP信号RAW格式数字视频进行线性插值处理,采用AXI4协议对传输信号协议进行转换;通过Zynq-7000的HP端口将数据流存入DDR内存中,实现软硬件数据的共享;设计并实现基于AXI4总线协议的VGA显示模块,输出经过系统处理的采集图像。系统平台实现了视频采集、数据预处理、缓存以及图像输出等一系列功能。通过Modelsim软件的行为仿真以及搭建的硬件环境的硬件电路验证,证明了系统方案设计的正确性与有效性,以及具有较好的灵活性和可移植性。结果表明,该系统能够为机器视觉、图像拼接等图像处理应用提供稳定、可扩展的平台。更多还原

【Abstract】 A digital video acquisition system based on AXI4 bus is designed and implemented in order to optimize the quality of high speed data stream between digital video and Zynq-7000 system in this paper.The digital video signal input in DVP RAW format is done linear interpolation processing,and signal transmission protocol is conversed using AXI4 protocol.The data stream is stored in the DDR memory through the HP port of Zynq-7000,to realize the data sharing of software and hardware.The VGA display module based on the AXI4 bus protocol is designed and implemented,and the images are output through the acquisition processing in the system.更多还原