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一种健壮的目标多自由度MeanShift序列图像跟踪算法

DOI: 10.11834/jig.200605117

Keywords: 中值平移,序列图像目标跟踪,目标倾角,带宽矩阵,目标自适应

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Abstract:

鉴于现有的MeanShift跟踪方法都是使用单一半径参数来描述目标大小变化,且每个目标仅有位置和尺寸两个自由度,因而不能适应复杂的目标运动情况.针对该问题,首先提出了一种新的MeanShift跟踪方法,由于该方法是通过引入带宽矩阵来描述目标尺寸,因此能够在水平和垂直两个方向上独立描述目标的大小变化,并通过加入目标倾角,使得目标旋转运动得以很好描述;然后借鉴了三步搜索的思想,提出了一种快速搜索策略,以解决目标遮挡问题.实验表明,该算法能够准确跟踪序列图像中的任意复杂运动,尤其对目标的缩放、旋转运动以及遮挡有良好的适应性.

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