Reka LOVAS | Katalin TOLNAI
(Mensor3D Kft., Budapest, Hungary)

Keywords: laser scanning, point cloud, 3D model, virtual presentation, heritage protection

Current paper discusses how cutting edge remote sensing technologies can be used for cultural and archeological heritage protection.
The goal is to support many application areas from work on site, through documentation, to virtual reconstruction and virtual presentation in case of the Roman watchtower at Visegrad-Lepence, Solomon-tower and Visegrad-Sibrik watchtower.
Several technologies were combined during the data acquisition procedure, such as terrestrial laser scanning, structured light scanning, UAV photogrammetry, photo, video, geodesy and ground penetrating radar.
The main objective was to create a dataset that enables deriving a colored point cloud with millions of points, then a high quality and high resolution surface model with texture, set of panoramic images, video, CAD models, 3D prints and interactive presentation animations.
To support heritage protection, in case of the Solomon-tower, the building has been surveyed outside and indoor to create the architectural documentations.
At Sibrik-hill a late Roman fortification was recorded during former excavations. Documentation was created manually then transformed and imported into a GIS database. During the survey the inner part of the castle area was measured with magnetometer as well as with ground penetrating radar. The result of this survey was first interpreted in the same GIS environment showing the anomalies in 3D.   A tin chalice artifact was found, the main body’s geometry was captured by scanner, and was reconstructed as CAD model.
The reconstruction of the watchtower at Visegrad-Lepence was supported by laser scanned pointcloud. Three Roman age statue heads, and a building construction plate were excavated, scanned with structured light scanner, and the detailed 3D model was created for virtual reality museum presentation. The artifacts are stored and presented in the Solomon-tower’s exhibition, the animated video of the virtually joined sculpture head and the female torso can be seen in the Budapest History Museum – Aquincum Museum.

Relevance conference | Relevance session:
The goal of this project was to survey, model and document historical sites and artifacts to support historical architecture, art historian research and virtual reality museum presentations.

Virtual presentations, animations based on the scanned data can offer not just the sense of presence but also give a touch of time travel back to imaginary but historically correct scenes.