ISPRS-Annals ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences ISPRS-Annals ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. 2194-9050 Copernicus Publications Göttingen, Germany 10.5194/isprs-annals-X-1-W1-2023-1057-2023 FUSION OF DIRECT GEOREFERENCED AERIAL DRONE WITH TERRESTRIAL LASER SCANNER DATA THE CASE OF THE ROMAN BATHS OF AMATHUS, CYPRUS Kafataris G. 1 Skarlatos D. https://orcid.org/0000-0002-2732-4780 1 Vlachos M. 1 Cyprus University of Technology, Department of Civil Engineering and Geomatics, Photogrammetric Vision Lab, 2-6 Saripolou str., 3036, Limassol, Cyprus 05 12 2023 X-1/W1-2023 1057 1064 Copyright: © 2023 G. Kafataris et al. 2023 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/ This article is available from https://isprs-annals.copernicus.org/articles/X-1-W1-2023/1057/2023/isprs-annals-X-1-W1-2023-1057-2023.html The full text article is available as a PDF file from https://isprs-annals.copernicus.org/articles/X-1-W1-2023/1057/2023/isprs-annals-X-1-W1-2023-1057-2023.pdf

The fusion of geomatic techniques with different accuracy and resolution has been used in recent years to applications of geometrical documentation for several archaeological sites. In this research article, the case of the Roman Baths of Amathus in Limassol, Cyprus was investigated.<br />Aerial photogrammetry and Terrestrial Laser Scanning (TLS) techniques were used to produce the final product. The photogrammetric data were based on Post-Processed Kinematic (PPK) imagery while the TLS georeference was based on targets.<br />The main research objective of this paper is to examine the reliability of PPK photogrammetric data without the use of Ground Control Points (GCPs) and how well they can be integrated with TLS data. Also, the two acquisition techniques were compared and indicated that 0.005 m Ground Sampling Distance (GSD) resolution aerial images and 0.0061/10 m resolution scans can be qualitatively fused.<br />The research paper will present the entire methodology up to the generation of the final 3D photorealistic product.