基于FPGA+TMS320DM6467T的多画面合成视频采集系统设计

The design of multi-screen composite video capture system based on FPGA+TMS320DM6467T

基于设计针对支持不同类型视频接口,以及模拟、数字视频信号在不同分辨率图像组合应用时需要实现视频数据采集与集中显示的目的,提出采用FPGA+ARM/DSP+PW338混合硬件架构实现四路视频合成数据采集系统的设计方案。在此基础上详细介绍了硬件实现原理,同时就画面合成、FPGA数据转码与画面合成模式控制三大核心程序设计进行详细介绍。研究测试结果表明,设计的四路多画面合成数据采集系统能够有效支持SD、DVI、HMDI、SDI多种接口的视频输入与合成应用,丰富的视频输入接口满足多场景下的图像合成与远端传输显示需求。

For the purpose of the collection and centralized display of video data,which based on the design of different video interfaces and the image composition application of the simulate video signal,digital video signal at different resolution ratio,we proposed a design scheme that the FPGA+ARM/DSP+PW338 hybrid hardware would be applied to achieve the four-channel video composite data acquisition system.Based on this design scheme,this paper make a detailed introduction about the principle of hardware’s implementation,and this paper also have a comprehensive introduction of the three core programmings,which are image synthesis,FPGA data transcoding,and image synthesis mode control.The research result shows that the four-channel multi-screen synthesis data acquisition system can effectively achieve the video input and synthesis application of SD,DVI,HMDI,SDI and other interfaces,and so many video input interfaces can meet the need of image synthesis and remote transmission display under multiple scenarios.