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1. 中国科学院大学 北京,510640
2. 中国科学院 长春光学精密机械与物理研究所, 吉林 长春 510640
收稿日期:2014-06-15,
修回日期:2014-07-30,
纸质出版日期:2014-12-05
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吴笑天, 鲁剑锋, 王宇庆, 陈典兵. 基于DM368的无人机视频压缩系统的设计[J]. 液晶与显示, 2014,29(6): 1117-1123
WU Xiao-tian, LU Jian-feng, WANG Yu-qing, CHEN Dian-bing. Design of UAV video encoding system based on DM 368[J]. , 2014,29(6): 1117-1123
吴笑天, 鲁剑锋, 王宇庆, 陈典兵. 基于DM368的无人机视频压缩系统的设计[J]. 液晶与显示, 2014,29(6): 1117-1123 DOI: 10.3788/YJYXS20142906.1117.
WU Xiao-tian, LU Jian-feng, WANG Yu-qing, CHEN Dian-bing. Design of UAV video encoding system based on DM 368[J]. , 2014,29(6): 1117-1123 DOI: 10.3788/YJYXS20142906.1117.
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。
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 embedded Linux operating system. Compared with traditional embedded video H264 encoding system design
we use DM368 inner video image co-processors to process the encoding task
which has the advantage of low-power consumption
low processing delay
and simple external circuit design. Furthermore
we utilize the real-time
stable and efficient embedded Linux operating system
capable of processing 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.
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