摘要
利用CCD的外同步工作特性,结合图像采集通道软件切换、多线程、事件驱动和图像压缩显示等技术,实现了双路视频的同步采集和实时显示与处理。在目标提取算法中,先采用带阻滤波隔离干扰,再采用自动阈值分割区分星点目标与背景,通过聚类分析剔除虚假目标干扰后,采用质心算法计算星点目标的质心坐标。经实验验证,该技术在单PC104的硬件基础上,既能稳定提取双路视频的星点目标,又成功满足了系统对双路视频同步采集、实时处理与显示的要求。
Through the external HD/VD trigger synchronization of CCD, and combining the capture channel soft switch as well as multithreading, event-driving, compressing display, the capturing synchronization, real-time processing and displaying of twin video are realized. In the algorithm of target pickup, firstly, the disturbance is closed off by hand block filter. Tben, the star aim is distinguished from the background by automation threshold segmentation. At last, the decoy is eliminated by clustering, and the center-of-moment is calculated. Experimental results show that this technology can steadily pick-up star aim from twin video and fulfill real-time capability based on single PC104.
出处
《光学与光电技术》
2009年第5期32-35,共4页
Optics & Optoelectronic Technology
关键词
实时处理
帧同步
聚类
自动阈值分割
real time processing
picture synchronization
clustering
auto threshold segmentation
