Analysis of gothic architectural details by spatial object reconstruction techniques

Abstract

The paper focuses on the 3D data acquisition technologies that support capturing the geometry of medieval architectural fragmented stones. High-resolution models of such fragments enable the analysis of profile shapes as well as the marking lines and curves left by the instruments of stonemasons, and therefore, indirectly, identifying connections between several master builders could become possible. Considering the requirements of historical analysis and the fact that the investigated stones are under monument protection, the authors decided to use remote sensing technologies, such as structured light scanning, terrestrial laser scanning, depth camera and image-based reconstruction. The paper evaluates the discussed technologies based on the accuracy and geometric resolution of the obtained 3D models. Besides technical parameters, time and cost requirements also have been investigated. The paper gives an overview on the advantages and shortcomings of the applied data acquisition technologies and of the provided end-products.