基于以太网传输的图像处理系统设计及FPGA实现

Design of Image Processing System Based on Ethernet Transmission and FPGA Implementation

为了保存经过采集和处理后的图像,并且确保传输图像的实时性和高效性,设计了一种远距离、高效率传输存储系统,该系统的FPGA主控芯片是Altera公司研发的Cyclone IV E系列,通过以太网中的UDP协议实现图像数据的传输;首先,通过摄像头OV5640进行图像数据的采集;其次,把采集到的数据进行图像预处理;然后,把处理后的图像通过SDRAM进行缓存;最后,通过网线利用UDP传输协议传输到上位机上进行保存;该方法适用于数据传输量大、传输距离远以及传输效率高等要求,并且能够实时的保存处理后的图像数据,为后续的处理奠定了基础。

In order to save the collected and processed images and ensure the real-time and high-efficiency transmission images,a long-distance and high-efficiency transmission storage system is designed.The FPGA main control chip of the system is Cyclone IV E developed by Altera Co.,and the transmission of the image data through the UDP protocol in the Ethernet can be realized.Firstly,the image data is collected through the camera OV5640;secondly,the collected image data is preprocessed,and then,the processed image is cached through the SDRAM;finally,the processed image is transmitted to the host computer through the network cable using the UDP transmission protocol.This method is suitable for the requirements of large data transmission volume,long transmission distance and high transmission efficiency.And it can save the processed image data in real time,the foundation for the subsequent processing is established.