大型建筑物三维激光扫描的流程及精度分析

三维激光扫描技术能够提供扫描物体表面的三维点云数据,瞬时测得空间三维坐标值和相应的影像数据,根据获取的空间点云数据快速构建三维可视化模型,精度优良且输出格式多样,能满足不同应用的需求。以扫描大型建筑物为例,论述了三维激光扫描系统的主要构成和工作流程,误差产生的来源及相应的质量控制进行分析,获得满足技术设计要求的扫描数据,为信息数字化发展提供了必要的生存条件。

Process and Accuracy Analysis of 3D Laser Scanning for Large Buildings

Three-dimensional laser scanning technology can provide three-dimensional point cloud data for scanning the surface of an object,instantaneously measure spatial three-dimensional coordinate values and corresponding image data,and rapidly construct a three-dimensional visualization model according to the acquired spatial point cloud data.The three-dimensional laser scanning technology has excellent precision and various output formats,and can meet the requirements of different applications.Taking the scanning of large buildings as an example,this paper discusses the main structure and working process of the three-dimensional laser scanning system,analyzed the sources of errors and the corresponding quality control,obtained the scanning data meeting the technical design requirements,and provided the necessary living conditions for the development of digital information.