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基于序列影像种子跟踪的道路线自动提取算法

, PP. 147-153

Keywords: 交通工程,道路线提取,序列影象,种子跟踪,边缘检测

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Abstract:

为快速建立道路精确的几何模型,利用车载移动测量系统获取的序列影像开展了道路边线自动提取方法研究.针对不同类型道路边线的特征,提出了一种基于序列影像种子跟踪的道路线自动算法.首先,对不同质量道路影像分别采用基于灰度信息和梯度信息的道路边线边缘检测方法;其次,采用线性回归模型拟合道路边线,以当前帧拟合直线为种子点,提出了基于种子直线的序列影像感兴趣预测方法,在此基础上对下一帧影像道路边线进行跟踪;最后,以高速公路和城市街区道路序列影像为例,开展了道路边线自动跟踪提取试验,结果表明此方法可以达到优于20cm的精度,具有很好的鲁棒性.

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