4K视频流异构多核的多路分屏方法  

Heterogeneous Multi‑core Method of Multi‑channel Split Screen Transmission for 4K Video Stream

作　　者：吴志忠 邓敏[1,2] 李毅航 张志刚 张宽 唐俊龙 唐立军[1,2] WU Zhizhong;DENG Min;LI Yihang;ZHANG Zhigang;ZHANG Kuan;TANG Junlong;TANG Lijun(School of Physics&Electronic Science,Changsha University of Science&Technology,Changsha,410114,China;Key Laboratory of Electromagnetic Environment Monitoring&Modeling in Hunan Province,Changsha,410114,China)

机构地区：[1]长沙理工大学物理与电子科学学院,长沙410114 [2]近地空间电磁环境监测与建模湖南省普通高校重点实验室,长沙410114

出　　处：《数据采集与处理》2020年第5期1001-1010,共10页Journal of Data Acquisition and Processing

基　　金：国家科技支撑计划课题(2014BAH28F04)资助项目;湖南省教育厅科学研究课题(15K009,17K004)资助项目。

摘　　要：针对视频多屏显示系统无法依据分屏数量进行超高清视频自适应分屏传输的问题,提出了异构多核的视频流传输方法。该方法首先采用基于ARM处理器的嵌入式系统实现多任务处理与实时监控;然后通过FPGA实现对视频流的接收、转换、处理及分屏输出显示的硬件加速。系统可以根据输入信号实时配置FPGA的工作参数,实现分辨率和分屏数量可变的超高清视频流分屏显示。最后采用Zynq UltraScale+MPSOC XCZU7EV多核异构处理器开发平台对本文系统进行测试,结果表明:4K视频多路分屏画面拼接无明显错位,同步一致,较好地满足了视频多路分屏显示要求。In order to solve the problem that the multi‑screen video display system cannot adapt to the multi‑screen transmission of ultra‑high‑definition(UHD)video according to the number of split screens,a heterogeneous multi‑core video streaming transmission method is proposed.First,the embedded system based on ARM is used to realize multi‑task processing and real‑time monitoring.Then FPGA realizes hardware acceleration of receiving,converting,processing and split‑screen output display of video stream.The system can configure the working parameters of FPGA according to the input signal in real time to realize the split screen display of UHD video stream with variable resolution and number of split screens.Finally,the system is tested using the Zynq UltraScale+MPSOC XCZU7EV heterogeneous multi‑core processor,and results show that the multi‑channel split‑screen mosaic of 4K video has no obvious dislocation and consistent synchronization,which better meets the requirements of video multi‑channel split‑screen display.

关 键 词：视频流传输 异构多核 分屏技术 4K超高清视频 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]