CAJ | 학술논문

传统的动态环境下视频兴趣区自动捕获和监控识别系统采用ZigBee编码和特征提取方法,因动态视频在传输过程中产生衰减失真,导致视频图像采集传输丢包,自动捕获性能不好.提出一种基于Huffman编码和MUX101程控开关控制的动态环境下视频兴趣区的自动捕获系统.通过VXI系统总线高速传输视频数据到AD8021芯片,进行反馈电阻控制,实现视频特征的动态提取和捕获,选用程控放大器VCA810,通过局部总线向HP E1562E 8GB提供传感器信号,达到调整视频特征兴趣区域放大倍数的目的.设计Huffman编码及视频兴趣区特征提取算法作为软件核心部分嵌入,采用VXI总线技术实现对动态视频兴趣区的自动捕获系统的硬件设计和软件设计.仿真结果表明,采用该系统进行动态视频采集和兴趣区特征的自动捕获,准确度较高,丢包率较少,性能优越.
전통적동태배경하시빈흥취구자동포획화감공식별계통채용ZigBee편마화특정제취방법,인동태시빈재전수과정중산생쇠감실진,도치시빈도상채집전수주포,자동포획성능불호.제출일충기우Huffman편마화MUX101정공개관공제적동태배경하시빈흥취구적자동포획계통.통과VXI계통총선고속전수시빈수거도AD8021심편,진행반궤전조공제,실현시빈특정적동태제취화포획,선용정공방대기VCA810,통과국부총선향HP E1562E 8GB제공전감기신호,체도조정시빈특정흥취구역방대배수적목적.설계Huffman편마급시빈흥취구특정제취산법작위연건핵심부분감입,채용VXI총선기술실현대동태시빈흥취구적자동포획계통적경건설계화연건설계.방진결과표명,채용해계통진행동태시빈채집화흥취구특정적자동포획,준학도교고,주포솔교소,성능우월.
In allusion to the problems of the poor performance of automatic acquisition and attenuation distortion produced in the transmission process of dynamic video,which causes packet loss of video image,a system based on Huffman and MUX101 programmable switch control is proposed for automatic acquisition of video interest area in dynamic environment. The system transmits video data into the AD8021 chip through VXI system bus in high speed to feedback resistor control,extract and capture the video characteristics dynamically. The programmable amplifier VCA810 is selected to provide sensor signal for HP E1562E 8GB through local bus,and adjust the amplification factor of video interest area. The Huffman encoding and the fea-ture extraction of video interest area are designed as the embedded core parts of the software. VXI bus technology is takento de-sign the software and hardware of automatic capture system for dynamic video interest area. The simulation results show that the system has the advantages of high accuracy,low packet-loss probability and good performance to collect the dynamic video and automatically capture the features of the video interest area.