基于FPGA的多路实时视频处理系统设计  

Design of multi-channel real-time video processing system based on FPGA

作　　者：严飞[1,2] 丁兆东 刘银萍 陈伟[1] 刘佳[1,2] YAN Fei;DING Zhao-dong;LIU Yin-ping;CHEN Wei;LIU Jia(College of Automation,Nanjing University of Information Science&Technology,Nanjing 210044,China;Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET),Nanjing 210044,China;College of Atmospheric Physics,Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学自动化学院,江苏南京210044 [2]江苏省大气环境与装备技术协同创新中心,江苏南京210044 [3]南京信息工程大学大气物理学院,江苏南京210044

出　　处：《液晶与显示》2022年第7期861-870,共10页Chinese Journal of Liquid Crystals and Displays

基　　金：江苏省产业前瞻与关键核心技术重点项目(No.BE2020006-2);国家自然科学基金(No.61605083)。

摘　　要：基于FPGA平台,采用双线性插值缩放算法,实现了对多路实时视频任意比例的缩放。进行了DDR3的读写逻辑设计,采用乒乓操作以及多通道读写仲裁模块,实现了实时的图像缓存。采用Alpha叠加融合算法,实现了对多路视频任意位置的漫游叠加,以及任意通道视频透明度的调节。实验结果表明,本次设计的多路实时视频处理系统,实现了最大分辨率为3840×2160、最低分辨率为100×100的缩放,能够灵活改变叠加位置的大小和位置,图像清晰、无闪屏、无错位情况的发生。Based on FPGA platform,the bilinear interpolation scaling algorithm is used to realize arbitrary scaling of multichannel real-time video.DDR3 read and write logic is designed.Using pingpong operation and multi-channel read and write arbitration module,the real-time image cache is achieved.Alpha overlay fusion algorithm is used to realize roaming overlay at any position of multichannel video and adjust the video transparency of any channel.The experimental results show that the multi-channel real-time video processing system designed in this paper can realize the maximum resolution of 3840×2160 and the minimum resolution of 100×100,and can flexibly change the size and position of the stacking position.The image is clear,no flash screen and no dislocation.

关 键 词：FPGA 双线性插值 视频缩放 图像漫游 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]