CAJ | 학술논문

无人机视频数据的实时压缩处理是无人机的关键技术之一.本文以 DM368为核心处理器,以嵌入式 Linux 为板级操作系统,设计出一套可供无人机使用的低功耗视频实时压缩系统.与传统的嵌入式视频 H264软件编码压缩系统相比,本系统依赖 DM368内嵌的视频协处理硬核处理 H264编码,具有功耗低,处理延迟小,外部电路简单等诸多优势.同时系统以嵌入式 Linux 为板级操作系统,实时性强,可稳定高效的管理视频采集、硬核调度、串口通讯、数据输出等诸多任务.试验结果表明,本系统在处理 PAL 制式为视频源的 H264编码任务时,平均功耗仅为1.5 W,具有功耗低、成本低、体积小、重量轻、实时性强等诸多优势,能够满足无人机视频压缩的应用需求.
무인궤시빈수거적실시압축처리시무인궤적관건기술지일.본문이 DM368위핵심처리기,이감입식 Linux 위판급조작계통,설계출일투가공무인궤사용적저공모시빈실시압축계통.여전통적감입식시빈 H264연건편마압축계통상비,본계통의뢰 DM368내감적시빈협처리경핵처리 H264편마,구유공모저,처리연지소,외부전로간단등제다우세.동시계통이감입식 Linux 위판급조작계통,실시성강,가은정고효적관리시빈채집、경핵조도、천구통신、수거수출등제다임무.시험결과표명,본계통재처리 PAL 제식위시빈원적 H264편마임무시,평균공모부위1.5 W,구유공모저、성본저、체적소、중량경、실시성강등제다우세,능구만족무인궤시빈압축적응용수구.
Real-time UAV video data compression is one of the key technology of UAV.In this paper we propose a real-time,low-power video encoding system design,based on DM368 processor and em-bedded Linux operating system.Compared with traditional embedded video H264 encoding system de-sign,we use DM368 inner video image co-processors to process the encoding task,which has the ad-vantage of low-power consumption,low processing delay,and simple external circuit design.Further-more,we utilize the real-time,stable and efficient embedded Linux operating system,capable of pro-cessing multi-task,such as video capturing,hard-core scheduling,serial communication,and data transmission.Experiment shows that the average power consumption of our system is only 1.5 W when dealing with the PAL video H264 coding task.Our design meet the requirement of UAV video compression task efficiently,with the advantage of low-power,low-cost,small-size,light-weight, and good real-time quality.