摘要
设计一种基于DM642的视频监视系统,其主控芯片采用专用多媒体处理芯片TMS320DM642,可以实现同时采集4路视频的功能,有效降低成本;同时在H.263编码标准实现快速运动估计时,针对块匹配运动估计,使用一种改进的钻石搜索算法代替原有的3步搜索法,解决将H.263移植到DSP后的优化问题。
It was given a design of DM642 based on Video Monitoring System, its central processor was dedicated multimedia processor, TMS320DM642, this System could capture at most 4-route video signals at the same time, which brought down the cost effectively. And a new diamond search algorithm for fast-matching motion estimation in H.263 was proposeded to replace the traditional three-step search algorithm in the motion estimation region which could optimize the code after transplant from C/C＋＋ to DSP.
出处
《铁路计算机应用》
2007年第9期29-32,共4页
Railway Computer Application
