【作者】 李玲；

【导师】 岳凤英；

【作者基本信息】 中北大学 ， 控制科学与工程， 2019， 硕士

【摘要】 伴随着人工智能、信息交互和5G网络技术的迅速发展,数字视频技术在各类武器装备中应用越来越多。高清数字视频原始数据量较大,传输所需带宽较高,飞行器的导航记录仪存储空间有限,针对这一问题,本文设计了一种基于DSP和FPGA架构的视频处理系统,可以对视频信息进行压缩后存储,用于记录某型飞机执行飞行任务过程中的视频数据。本文首先分析了数字视频技术的研究背景和意义,提出视频处理系统的研究价值。然后简单介绍了视频编码标准和达芬奇技术的发展历程和研究现状,阐述了系统选用DSP+FPGA架构的实现意义。其次根据系统任务需求,提出系统总体设计方案,并在此基础上按照功能对系统进行模块划分,从硬件电路设计和软件设计两方面对各个功能模块进行具体设计。系统选用DSP+FPGA作为基本架构的硬件平台,并运用H.264编码标准的压缩算法,实现视频数据的压缩、存储。总体遵循通用化、模块化、系列化设计思想,利用先进成熟的技术,以确保较好适用性和较高可靠性。最后,提出系统测试方案,搭建测试环境,对视频处理板进行基本硬件测试,通过数据回放软件对存储板中记录的视频流回放,对比分析编码前后视频流数据量的大小,计算视频压缩比率,分析视频处理系统压缩功能。经测试和验证,本文设计的视频处理系统能够达到预期目标,已成功应用在机载设备中。更多还原

【Abstract】 With the rapid development of artificial intelligence,information exchange and 5G network technology,Digital video technology is more and more applied in all kinds of weapon equipment.High-definition digital video has a large amount of raw data.Transmission requires higher bandwidth,The storage space of the aircraft’s navigation recorder is limited,To solve this problem,This paper designs a video processing system based on the architecture of DSP and FPGA,which can compress and store video information to record video data of a certain aircraft during flight.This paper first analyzes the research background and significance of digital video technology,and proposes the research value of video processing system.Then the video coding standard and Da Vinci technology development history and research status are briefly introduced.The realization significance of the system selection DSP+FPGA architecture is expounded.Secondly,according to the requirements of the system task,the overall design scheme of the system is proposed.On this basis,the system is divided into modules according to the functions.The functional modules are designed specifically from the aspects of hardware circuit design and software design.The system selects DSP+FPGA as the hardware platform of the basic architecture,and uses the compression algorithm of H.264 coding standard to realize the compression and storage of video data.The overall follows generalization,modularization,serial design ideas,and uses advanced and mature technology to ensure better applicability and higher reliability.Finally,propose a system test plan and build a test environment,perform basic hardware testing on the video processing board,playback the video stream recorded in the storage board through the data playback software,compares and analyzes the amount of video stream data before and after encoding,calculates the video compression ratio,and analyzes the compression function of the video processing system.After testing and verification,the video processing system designed in this paper can achieve the expected goal.It has been successfully applied to airborne equipment.更多还原