Deviation Analysis of Historical Building Basedon Terrestrial Laser Scanner Dataand 3D Mesh Model

Abstract

The useof Terrestrial Laser Scanner (TLS)technologiesin cultural heritage studies has becomemore common day by day. In addition to documenting a historical buildingwith high accuracy, TLS technologiescan obtain detailed data about the structurebeing studied by analyzing point cloud. Laser scanning data is seen as a non-contact and effective analysis method in determining the formal deformations that occur due to various reasons, especially in historical buildings. With this method, it is possible to determine how much the object deviates from a reference 3D model or plane and with this analysis, deformation maps can be prepared. With the help of these maps,intervention decisions can be made. Within the scope of the article, laser scanning data of Selime Sultan Tomb located in Güzelyurt Selime Townin Türkiye, one of the important settlements of Cappadocia, wereacquired.By comparing the 3Dmesh model prepared with base on pointdata, the morphological differencesand deviations of the tomb were determined and mapped.