从2004年5月开始,故宫博物院“古建筑数字化测量技术研究项目组”应用三维激光扫描技术先后对太和殿、太和门、神武门、慈宁宫和寿康宫院落等重要古代建筑进行了完整的三维数据采集,并在大量实践基础上深入研究了处理三维数据的核心理论与方法。本文系统总结了使用三维激光扫描仪获取测量数据——点云,并将点云加工成三维模型、二维线条图和正射影像图,进而应用于古建筑整体变形监测、大木结构安全性分析、建筑构件尺寸测量和外观现状记录的方法与流程。 From May 2004, the National Palace Museum “ancient building digital measurement technology research project ” application of three-dimensional laser scanning technology has the Hall of Supreme Harmony, Taihe Gate, Shenwumen, Cunningham Palace and Shoukang Palace and other important ancient buildings Carried out a complete three-dimensional data collection, and based on a large number of practices in-depth study of the core theory and method of processing three-dimensional data. This paper systematically summarizes the use of three-dimensional laser scanner to obtain measurement data - point cloud, and the point cloud processing into three-dimensional model, two-dimensional lines and orthographic images, and then applied to the overall deformation of ancient buildings monitoring, large wooden structure safety analysis, Methods and Procedures for Measuring Dimension and Appearance of Building Components.