跟踪移动用户同时减少信令开销是通信系统位置管理研究中重要的方面。跟踪区列表是LTE系统中新引入的概念,它由多个跟踪区构成用来减少位置管理信令开销。受生活、工作、学习方面的影响,大部分用户具有固定的移动方式。提出了一种基于...跟踪移动用户同时减少信令开销是通信系统位置管理研究中重要的方面。跟踪区列表是LTE系统中新引入的概念,它由多个跟踪区构成用来减少位置管理信令开销。受生活、工作、学习方面的影响,大部分用户具有固定的移动方式。提出了一种基于跟踪区关联性的跟踪区列表设计方法,它通过从用户历史移动路径中获取各跟踪区之间的关联性并建立各跟踪区的关联表,当跟踪区更新消息发生时,网络获取该消息中提供的上次访问跟踪区和用户当前所在跟踪区结合关联表进行跟踪区列表设计。该方法能够随不同上次访问跟踪区动态分配跟踪区列表,特别适用于大规模网络中。最后运用里斯本城镇网络数据,实验比较了基于跟踪区关联性的跟踪区列表设计方法和rule of thumb设计方法在一整天的信令开销。结果显示该方法在减少位置管理信令开销方面性能至少提升了11.5%。展开更多
针对高速生产线上棒材计数困难的问题,使用线扫描相机采集运动棒材图像,利用Blob分析算法识别出棒材端面的质心坐标,并计算其面积大小;利用图像帧间数据联系开发出一种启发式跟踪方法跟踪棒材端面运动.在实验室环境下,开发出高速实时棒...针对高速生产线上棒材计数困难的问题,使用线扫描相机采集运动棒材图像,利用Blob分析算法识别出棒材端面的质心坐标,并计算其面积大小;利用图像帧间数据联系开发出一种启发式跟踪方法跟踪棒材端面运动.在实验室环境下,开发出高速实时棒材识别与跟踪的硬件与软件系统.首先搭建了硬件平台,确定了硬件的系统参数,而后基于Visual Studio 2005平台进行了软件系统开发.实验结果证明,该系统对生产线上高速运动的不粘连棒材,计数准确率接近100%,且识别时间为毫秒级.展开更多
A tracking algorithm for multiple-maneuvering targets based on joint probabilistic data association（JPDA）is proposed to improve the accuracy for tracking algorithm of traditional multiple maneuvering targets.The int...A tracking algorithm for multiple-maneuvering targets based on joint probabilistic data association（JPDA）is proposed to improve the accuracy for tracking algorithm of traditional multiple maneuvering targets.The interconnection probability of the two targets is calculated,the weighted value is processed and the target tracks are obtained.The simulation results show that JPDA algorithm achieves higher tracking accuracy and provides a basis for more targets tracking.展开更多
In multi-target tracking,Multiple Hypothesis Tracking (MHT) can effectively solve the data association problem. However,traditional MHT can not make full use of motion information. In this work,we combine MHT with Int...In multi-target tracking,Multiple Hypothesis Tracking (MHT) can effectively solve the data association problem. However,traditional MHT can not make full use of motion information. In this work,we combine MHT with Interactive Multiple Model (IMM) estimator and feature fusion. New algorithm greatly improves the tracking performance due to the fact that IMM estimator provides better estimation and feature information enhances the accuracy of data association. The new algorithm is tested by tracking tropical fish in fish container. Experimental result shows that this algorithm can significantly reduce tracking lost rate and restrain the noises with higher computational effectiveness when compares with traditional MHT.展开更多
文摘跟踪移动用户同时减少信令开销是通信系统位置管理研究中重要的方面。跟踪区列表是LTE系统中新引入的概念,它由多个跟踪区构成用来减少位置管理信令开销。受生活、工作、学习方面的影响,大部分用户具有固定的移动方式。提出了一种基于跟踪区关联性的跟踪区列表设计方法,它通过从用户历史移动路径中获取各跟踪区之间的关联性并建立各跟踪区的关联表,当跟踪区更新消息发生时,网络获取该消息中提供的上次访问跟踪区和用户当前所在跟踪区结合关联表进行跟踪区列表设计。该方法能够随不同上次访问跟踪区动态分配跟踪区列表,特别适用于大规模网络中。最后运用里斯本城镇网络数据,实验比较了基于跟踪区关联性的跟踪区列表设计方法和rule of thumb设计方法在一整天的信令开销。结果显示该方法在减少位置管理信令开销方面性能至少提升了11.5%。
文摘针对高速生产线上棒材计数困难的问题,使用线扫描相机采集运动棒材图像,利用Blob分析算法识别出棒材端面的质心坐标,并计算其面积大小;利用图像帧间数据联系开发出一种启发式跟踪方法跟踪棒材端面运动.在实验室环境下,开发出高速实时棒材识别与跟踪的硬件与软件系统.首先搭建了硬件平台,确定了硬件的系统参数,而后基于Visual Studio 2005平台进行了软件系统开发.实验结果证明,该系统对生产线上高速运动的不粘连棒材,计数准确率接近100%,且识别时间为毫秒级.
文摘A tracking algorithm for multiple-maneuvering targets based on joint probabilistic data association（JPDA）is proposed to improve the accuracy for tracking algorithm of traditional multiple maneuvering targets.The interconnection probability of the two targets is calculated,the weighted value is processed and the target tracks are obtained.The simulation results show that JPDA algorithm achieves higher tracking accuracy and provides a basis for more targets tracking.
基金Supported by the National Natural Science Foundation of China (No. 60772154)the President Foundation of Graduate University of Chinese Academy of Sciences (No. 085102GN00)
文摘In multi-target tracking,Multiple Hypothesis Tracking (MHT) can effectively solve the data association problem. However,traditional MHT can not make full use of motion information. In this work,we combine MHT with Interactive Multiple Model (IMM) estimator and feature fusion. New algorithm greatly improves the tracking performance due to the fact that IMM estimator provides better estimation and feature information enhances the accuracy of data association. The new algorithm is tested by tracking tropical fish in fish container. Experimental result shows that this algorithm can significantly reduce tracking lost rate and restrain the noises with higher computational effectiveness when compares with traditional MHT.
