Application of 3D Information Expression Method of Ancient Buildings Based on Point Cloud Data and BIM

Abstract

Recently, with the continuous development of technologies such as smart cities and virtual reality, the demand for 3D geospatial data is also growing. 3D laser scanning technology can be used to collect 3D geospatial data, create 3D scenes and collect other data to obtain outstanding Visual effects and scalability. This article puts forward the application research of ancient architecture three-dimensional information expression method based on point cloud data and BIM. Using 3D point cloud modeling and surface reconstruction of 3D point cloud data, in the form of a grid of a given point cloud, a 3D point cloud modeling is used to reconstruct a 3D model based on point cloud data and perform surface reconstruction of 3D point cloud data. process. The 3D digital protection of ancient Chinese buildings is an important way to inherit the essence of Chinese architecture. It helps to record the structural shape and historical, cultural and scientific value of ancient buildings, and provides accurate data support for the maintenance and repair of buildings. Accurate data support for building repairs and maintenance has improved the accuracy and visibility of information by 50% for the protection of ancient buildings.