Cultural Heritage Documentation by Combining Near-Range Photogrammetry and Terrestrial Laser Scanning: St. Stephen’s Cathedral, Vienna

Abstract

A powerful sensor system providing both high-resolution textures and highly accurate 3-D geometry information is created by combining near-range photogrammetry and terrestrial laser scanning. As both sensors are integrated closely into a single system, the textures can be applied to the 3-D data automatically and with high precision. These sensors have proven to be extremely valuable tools in applications of cultural heritage, architecture, and archaeology. The authors demonstrate the capabilities of the Riegl LMS-Z420i system with an integrated high-resolution camera by presenting the work flow of data acquisition and postprocessing performed for modeling the cathedral of S. Stephen in Vienna, Austria, with an emphasis on the construction of CAD models.