CAJ | 학술논문

视频图像采集及处理技术在远程视频监控和可视电话中有着广泛的应用前景,驱动视频采集设备和获取视频数据并进行相应的处理,是实现这些应用的基础.针对这些应用,构建了一个基于嵌入式Linux和PXA270微处理器的视频采集与传输系统,利用Video4Linux实现USB摄像头视频数据采集,采集的视频数据经JPEG压缩后,在PXA270为核心的系统控制下通过以太网进行传输,并通过重新编译移植Webcam_server应用程序实现了实时视频采集.实验结果表明,该系统动态刷新良好,具有一定的实用性.
시빈도상채집급처리기술재원정시빈감공화가시전화중유착엄범적응용전경,구동시빈채집설비화획취시빈수거병진행상응적처리,시실현저사응용적기출.침대저사응용,구건료일개기우감입식Linux화PXA270미처리기적시빈채집여전수계통,이용Video4Linux실현USB섭상두시빈수거채집,채집적시빈수거경JPEG압축후,재PXA270위핵심적계통공제하통과이태망진행전수,병통과중신편역이식Webcam_server응용정서실현료실시시빈채집.실험결과표명,해계통동태쇄신량호,구유일정적실용성.
Video image acquisition and processing technology had a broad application prospect in the long distance supervisory control with video and video telephone. Driving video acquisition equipments and gaining video data to process accordingly are the basis of realization the applications. Aiming at the applications, designed a video acquisition and transmission system based on PXA270 with embedded Linux. The system used USB camera combined with Video4Linux to implement video data acquisition, then were encoded in JPEG, and sent by Ethernet under the control of the PXA270. In the end, compiling and transplanting the webcam server applica-tion, actualized real-time video image acquisition. The experimental results shows that the system can be refreshed dynamically bet-ter, and it is very useful and practical.