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基于反向ST-MRF模型的车辆遮挡分割算法

Keywords: 交通工程,遮挡分割,时空马尔可夫随机场,车辆跟踪,运动矢量,能量函数

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Abstract:

车辆跟踪中普遍存在的车辆遮挡问题直接影响着跟踪的精度,是车辆跟踪研究中的关键问题。在介绍车辆跟踪算法基本原理的基础上,提出了一种基于反向ST-MRF模型的车辆遮挡分割算法。该算法通过反向沿时间轴运用ST-MRF累积图像,优化运动矢量和融合不完整的分割部分,对车辆遮挡进行了比较完美的分割。最后通对比原始ST-MRF算法和反向ST-MRF算法,2者得到目标跟踪的成功率分别为87%和98%。基于反向ST-MRF模型的车辆遮挡分割算法能在交通量比较大,且车辆出现相互遮挡的情况下较准确地获得车辆跟踪数据,为以后的交通事件检测提供重要的数据基础。

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