机载LiDAR点云中道路的提取方法

针对国内外许多专家学者对道路提取进行了大量的研究,但国内少有文章对这些研究进行归纳总结这一问题,该文对近年来国内外所有的研究现状进行总结概括。机载LiDAR点云进行道路提取中由于道路点云与地面点云高程相差很小、激光反射强度相近,导致道路提取一直是一个难点。文中系统阐述了从LiDAR中进行道路提取的各个过程、存在的问题以及对应的处理方法。最后,对此项研究内容进行了展望。

A review on road extraction methods from airborne LiDAR

Road extraction from airborne LiDAR point cloud has always been a research hotspot in recent years.Because of the small difference of elevation and intensity between road point cloud and ground point cloud,road extraction has been a difficulty in feature extraction from LiDAR point cloud.In recent years,domestic and foreign experts have carried out a lot of researches.However,there are few articles to sum up these researches.This paper summarized the research status in recent years and systematically described each process of road extraction,existing problems and the corresponding processing method.Finally,this paper prospected the research content.This paper will be helpful to researchers to systematically know about domestic and foreign research situation,and to broaden the research field of vision,so as to make a more in-depth study.