一种高分辨率图像采集传输系统的FPGA设计

FPGA Design of a High-resolution Image Acquisition and Transmission System

为实现对高分辨率图像的采集,提出了一种高分辨率图像采集传输系统的FPGA设计。系统采用FPGA作为主控芯片,实现对图像传感器OV5640的控制,采集到的高分辨率图像缓存至DDR2 SDRAM中。为匹配数据传输过程中的速度差异,保证图像数据的完整性,采用FIFO对数据进行暂存,系统采用USB3.0接口实现图像的上传。经过系统调试与验证,实现了预期功能,可以实现分辨率为2592×1944的图像的稳定采集。测试结果表明,图像采集帧频为14 f/s,图像传输带宽达到320 MB/s,图像显示良好。

In order to realize the acquisition of high-resolution image,a FPGA design of high-resolution image acquisition and transmission system is proposed.The system uses FPGA as the main chip to control the image sensor OV5640,and the high-resolution images are stored in DDR2 SDRAM.In order to match the speed difference in the process of data transmission and ensure the integrity of image data,Fifo is used to store the data temporarily.The system uses USB3.0 interface to upload the cached image data in DDR2 SDRAM to host computer for display.After the system debugging and verification,the design realizes the anticipated function,and can realize the stable image acquisition with 2592×1944 resolution.The test result shows that the image acquisition frame frequency is 14 f/s,the image transmission bandwidth is 320 MB/s,and the image display is good.