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Abstract
Abstract. This paper focuses on the holistic 3D geometric documentation of four Cultural Heritage buildings, of different historic eras, on the island of Rhodes. The main scope was to produce the 3D models and all required products according to the needs and specifications set by the EU funded HYPERION project. The ideal combination of multi-source data acquisition and processing was employed, which is the modern perception for the methodology of geometric documentation of monuments. The workflow for the combination of geodetic, photogrammetric and laser scanning data acquisition methods is described in detail. Very decisive factor in carrying out fieldwork for data acquisition was the time frame, which was very limited due to the COVID-19 pandemic. The establishing of a holistic framework for the documentation of Cultural Heritage by carrying out a wide range of multidisciplinary research, acquiring and combining datasets from various sensors and sources, as well as by developing innovative tools for systematic monitoring gives substantial results in order to protect, preserve and enhance Cultural Heritage sites. The documentation results are presented and discussed for their usefulness for the project.
Highlights
Cultural Heritage is a domain which has been and still is greatly affected by climate change
This paper focuses on the holistic 3D geometric documentation of four Cultural Heritage buildings on the island of Rhodes for the fulfilment of the research project requirements (Figure 1)
Pre-processing of point clouds and imagery, without georeferencing, was performed in situ i.e. all point clouds from laser scanning were pre-registered and all acquired images were oriented with low accuracy, in order to ensure that there was no lack of data and to repeat additional scans or shooting, if necessary (Figure 4)
Summary
Cultural Heritage is a domain which has been and still is greatly affected by climate change. At the same time Information and Communication Technologies (ICT) have been greatly exploited to contribute to the holistic documentation, to support conservation and preservation actions (Kotoula and Georgopoulos 2015, Georgopoulos et al 2018). Towards this direction, European Union has decided to fund a relevant 4-year research project (Grant Agreement no 821054, Start date: 1st of June, 2019) entitled HYPERION: Development of a Decision Support System for Improved Resilience & Sustainable Reconstruction of historic areas to cope with Climate Change & Extreme Events based on Novel Sensors and Modelling Tools (https://www.hyperion-project.eu/). HYPERION is already performing extensive tests in four cultural heritage study areas, demo sites, within Europe, in Greece (Rhodes), Spain (Granada), Norway (Tønsberg) and Italy (Venice)
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