车载点云数据高速公路路面提取方法

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利用车载激光扫描数据提取高速公路的道路边界时,不能以路沿作为边界.针对此问题,提出了一种车载点云数据高速公路路面提取方法.根据车载激光扫描数据的特点,设计了逐步提取到精细优化的处理流程.首先,利用改进的RANSAC算法,在条件约束下进行分区自适应阈值粗提取;然后,通过结合RANSAC阈值的形态学滤波和基于点云密度和强度的滤波,进一步进行道路精细提取;最后,利用边缘检测算法对道路边界进行优化,从而提取完整道路点云.利用实际点云数据进行实验,结果表明,该方法提取的道路点云的准确度、完整度、提取质量均超过90%.
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