利用激光点云数据提取采石场地貌特征

三维激光扫描技术在地貌特征提取方面能够实时、主动、高效完成数据采集工作，具有传统测量方法不具有的特点。利用研究区点云数据生成等高线和三维模型可以真实地反映出其地貌特征。本文选择李庄采石场为研究对象，利用徕卡C10扫描仪获取激光点云数据，采用Cyclone和Geomagic Studio软件相结合对其进行预处理，再分别利用Cyclone、CASS、Surfer 3种软件提取地貌特征，并与常规测量方法进行了对比分析。研究结果表明：3种软件均可以生成等高线并生成理想的三维模型，且均有其特性；在制作精度和效率方面，利用点云数据绘制出的等高线相比常规测量方法有着明显的优势。

The Method of Extracting Topographic Feature of the Quarry by Laser Point Cloud Data

The 3D laser scanning technology, which has the characteristics that the traditional measurement methods do not have,can extract topographic features timely, actively and efficiently.The contour lines and the 3D model can be used to reflect the topographic features of the study area.The data of the laser point cloud are acquired by Leica C10 scanner.Cyclone and Geomagic Studio are used to preprocess the data.Cyclone,CASS and Surfer are used to extract the topographic features.Conventional measurement methods are compared and analyzed.The results show that the three kinds of software can generate contour lines and the ideal three-dimensional model, and all have their own characteristics.As to the production of precision and efficiency, the contour line drawn from the point cloud data is obviously superior to the conventional methods.