Analysis of Ground Ponding Characteristics of Ancient Buildings Based on 3D Point Cloud

Abstract

Since old structures were constructed a long time ago, it is vital to find out the extent of their damage and restore the ground. Thus, we developed a ground digital elevation model data (DEM) of ancient structures based on three-dimensional laser point cloud data. Using the point cloud DEM data, we analyzed the flow direction and flow of collected water to obtain the water distribution data around ancient buildings. It is confirmed that the accuracy of the results of the groundwater analysis became higher through the elevation analysis of the cross-section of the point cloud data. The passive water accumulation area was also calculated using a point cloud made to fit the aircraft.