课题在对Trolltech公司的QT/Embedded和V4L深入分析和研究的基础上,开发了基于Intel Pxa270的视频监控系统。系统由视频采集、图像显示、动态侦测算法、图像截取四部分组成。
在视频采集时使用Video for Linux接口通过ov511摄像头对视频实时采集,并为后期的图像处理提供数据;对图像的动态侦测使用帧对比算法;使用QT的 API实现对图像的显示,保存和系统GUI实现。
关键词:帧对比算法 QT/Embedded V4L
Monitor System base on the Intel Pxa270
ABSTRACT
The topic has developed a monitor system base on the Intel Pxa270 which is on the basis of the analysis and research of QT/Embedded and video for linux(V4L).This system composes 4 parts which are video frequency gathering,video display,motion detection algorithms,take the photograph.
When video frequency gathering utilizes V4L interface connecting OV511 camera, with video frequency real-time gathering, and provides the data for the later period imagery processing. Motion detection algorithms utilize frame-difference method.The video display and image saving and system's GUI realization utilize API provided from QT.