Message passing based data association algorithm for multiple extended object Tracking

Feng Yang, Yu Wei, Linfeng Xu
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Abstract

Due to the development of sensor technology in recent years, it has become increasingly common for objects to occupy multiple units of sensor resolution. For tracking an extended object (EO) that produces an unknown number of measurements per time, the main challenge is to identify the origin of the measurements. Rather than enumerating all measurements partitions or association hypotheses, we adopt a message passing inference method to reduce the computational complexity of obtaining the marginal association probabilities. An overcomplete description of data association uncertainty has been introduced to obtain the marginal association probabilities with linear complexity in the number of measurements and targets. Based on factor graph theory and the sum-product algorithm (SPA), the proposed algorithm has a satisfied performance compared to other data association methods.
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基于消息传递的多扩展目标跟踪数据关联算法
由于近年来传感器技术的发展,物体占用多个传感器分辨率单位的现象越来越普遍。对于跟踪每次产生未知数量测量的扩展对象(EO),主要的挑战是确定测量的起源。我们采用消息传递推理方法,而不是枚举所有的测量分区或关联假设,以减少获得边际关联概率的计算复杂度。引入了数据关联不确定性的过完备描述,以获得测量值和目标数具有线性复杂性的边际关联概率。该算法基于因子图理论和和积算法(SPA),与其他数据关联方法相比,具有较好的性能。
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