LIDAR点云中多层屋顶轮廓线提取方法研究

Research on extracting multi-layer roof boundary from LIDAR point clouds

在分析LIDAR数据提取建筑物轮廓线现状的基础上,针对多层、非规则屋顶轮廓线提取的难点,提出一种直接基于离散点云的屋顶轮廓线提取方法,该方法主要包括屋顶点的识别,初始轮廓线的提取以及轮廓线的规则化等步骤。最后采用实地数据进行验证,结果表明该方法具有一定的应用前景。

Based on the analysis of existing building boundary extraction method,the article proposes a method of extracting building boundaries directly from LIDAR point clouds,in consideration of characteristics of roofs with multi-layer and irregular shapes.The process consists of a sequence of steps：identify roof points;extract building boundary;and regularize the boundary.Buildings with multi-layer and irregular roof shape are used to evaluate the proposed approach and results show the promising capability of extracting building boundary from point cloud data.