摘要
在列车监控装置中视频信息直观明了地再现列车内情景.VxW orks实时操作系统下视频采集压缩系统涉及到PC I驱动程序的开发、视频采集卡的编程、MPEG4压缩算法的应用、文件管理等.该系统用TMS320DM642实现对视频信号的压缩算法,通过PC I总线送至本地硬盘存储,形成文件,通过地面回放软件进行回放.
Scenes in a train can be redisplayed intuitively and legibly by video information in the monitor equipments, which involves the development of PCI driver, programming of video capture card, application of MPEG4 compression algorithm and file management in the video capture compression system based on VxWorks real time system. Compression of video signals is realized by TMS320DM642. Data is transmitted to the hard disk through PCI bus line and formed into files on local hard disk. Video information can be redisplayed with ground redisplay software.
出处
《应用科技》
CAS
2006年第11期4-6,共3页
Applied Science and Technology
