三维激光扫描及BIM技术在古建筑保护中的应用

Application of 3D laser scanning and BIM technology in the protection of ancient buildings

我国古建筑数量庞大且受损情况严重,如何在不造成古建筑二次伤害的基础上获取三维信息并进行高精度复原,提出基于三维激光扫描技术和倾斜摄影模型并结合BIM技术建模的方法。试验外业选用无人机和三维激光扫描仪等相关仪器,内业利用ContextCapture,SCENE软件完成点云拼接,通过ICP算法提高点云精细匹配度,并最终通过REVIT软件建模、渲染、出图。通过实例证明了该方法应用于古建筑复原的可行性,其高效率、高精度、可出图性为今后古建筑保护和仿古建模提供了数据和技术支持。

There are a large number of ancient buildings in our country and the damage is serious.How to obtain three-dimensional information and carry out high-precision restoration without causing secondary damage to ancient buildings.This paper proposes a method based on three-dimensional laser scanning technology and oblique photography model combined with BIM modeling technology.Uav and 3D scanning laser were selected as experimental equipment,ContextCapture and SCENE software were used to complete the point cloud stitching,ICP algorithm was used to complete the point cloud fine matching,and finally REVIT software was used for modeling,rendering and drawing.The feasibility of applying this method to the restoration of ancient buildings is proved by an example.Its high efficiency,high precision and graphability provide data and technical support for the protection and modeling of ancient buildings in the future.