基于FPGA的视频采集及实时显示系统设计

Design of Video Acquisition and Real-time Display System Based on FPGA

摘要:

针对现有的目标识别及跟踪系统项目,为了便于其调试以及后期对目标的位置信息进行监控,对图像采集及实时显示方面进行了研究,设计了基于FPGA的视频采集及显示系统,首先进行硬件选型并搭建硬件平台,对各模块进行分析,编写驱动程序,设计SDRAM控制器,改进了现有的乒乓操作,并使用FIFO完成跨时钟数据的交互,保证了数据流的连续性。实验结果表明使用该乒乓操作后,消除了两帧图像切换时由于时钟不同步带来的图像交错,能够稳定的完成视频采集及实时显示的功能。实践表明该系统能够满足采集存储的速度，达到实时采集并显示的目的，具有运行稳定、可扩展性好等特点。

Abstract:

Digital image real-time display plays an important role in military and civil field, synchronous implementation VGA display after the data captured by the camera have a great research value. In order to facilitate the existing project target recognition and tracking system debugging, and then to monitor the location of the object information, studied the image acquisition and real-time display, and design the video acquisition and display system based on FPGA. First of all, the hardware has been selected and the hardware platform has been built, analysis of each module and write the driver, then the SDRAM controller is designed, improved the existing ping-pong operation, and complete the data interaction across the clock by using the FIFO, it ensure the continuity of data flow. The experimental results show that use the ping-pong operation, can eliminates theSimage blur caused by the clock out of syncSwhen switchingStwo frames, and ensure the image real-time display integrated.