嵌入式系统中USB摄像头的图像采集  

USB capture image acquisition in embedded application system

作　　者：邹意然[1] 王永威[1] 赵龙[1] 

机构地区：[1]北京航空航天大学控制一体化技术国家级重点实验室,北京100191

出　　处：《微计算机信息》2010年第35期24-25,28,共3页Control & Automation

基　　金：基金申请人:邹意然;项目名称:嵌入式智能汽车编队;基金颁发部门:国家大学生创新计划(教育部SRTP)(091000608)

摘　　要：在各种嵌入式开发的过程中,为解决图像采集硬件成本高,软件采集方案制定困难的问题,本文提出了嵌入式系统中USB摄像头的图像采集方案。该方案是通过对Linux内核中设备驱动的定制,实现了USB摄像头的在嵌入式系统的应用,通过对VideoforLinux的二次封装,实现了视频流的采集和显示。利用USB摄像头在实际的嵌入式系统中进行测试,测试结果表明本文所提的方案是一种普适性高,且简单易行的视频采集方案。In the development of various embedded application systems,the cost of image acquisition is always high and the scheme of video frame collection is always arduous.To solve the above problems,this paper brought forward a new method.By tailoring the device driver in the Linux system kernel.the USB captures using in embedded application systems is achieved.By packing the videoforlinux,the acquisition and the displaying of the video stream is achieved.The scheme is tested in the practical situation.The result of the testing shows that the method of this paper is high applicability and easy to carry out.

关 键 词：ARM 设备驱动加载 VideoforLinux(V4L) Linux设备调用 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]