Web Service是建立可互操作的分布式应用程序的新平台.它定义了应用程序如何在Web上实现互操作性,主要技术有XML,SOAP,WSDL和UDDI.本文首先介绍了Web Service的工作原理,然后充分利用Web Service平台的特点对移动机械手网络遥操作控制系统进行设计,使系统具有易于开发、扩展、维护和跨平台能力强等特点.
A method was presented to implement the detecting and tracking of moving targets through omnidirec-tional vision. The method combined optical flow with particle filter arithmetic, in which optical flow field was used to detect and locate moving targets and particle filter was used to track the detected moving objects. According to the circular image character of omnidirectional vision, the calculation equation of optical flow field and the tracking arithmetic of particle filter were improved based on the polar coordinates at the omnidirectional center. The edge of a randomly moving object could be detected by optical flow field and was surrounded by a reference region in the particle filter. A dynamic motion model was established to predict particle state. Histograms were used as the fea-tures in the reference region and candidate regions. The mutual information (MI) and Gaussian function were com-bined to calculate particle weights. Finally, the state of tracked object was computed by the total particle states with weights. Experiment results show that the proposed method could detect and track moving objects with better real-time performance and accuracy.
