Abstract
Abstract. The already arduous task of collecting, processing and managing heterogeneous cultural heritage data is getting more intense in terms of indexing, interaction and dissemination. This paper presents the creation of a 4D web-based platform as a centralized data hub, moving beyond advanced photogrammetric techniques for 3D capture and multi-dimensional documentation. Precise metric data, generated by a combination of image-based, range and surveying techniques, are spatially, logically and temporally correlated with cultural and historical resources, in order to form a critical knowledge base for multiple purposes and user types. Unlike conventional information systems, the presented platform, which adopts a relational database model, has the following front-end functionalities: (i) visualization of high-resolution 3D models based on distance dependent Level of Detail (LoD) techniques; (ii) web Augmented Reality; and (iii) interactive access and retrieval services. Information deduced from the developed services is tailored to different target audiences: scientific community, private sector, public sector and general public. The case study site is the UNESCO world heritage site of Meteora, Greece, and particularly, two inaccessible huge rocks, the rock of St. Modestos, known as Modi, and the Alyssos rock.
Highlights
Heterogeneous data management practices in the heritage sector are very important and demand increasing attention
The results showed that 182 questionnaire recipients are interested in the METEORA platform as tourists; 151 recipients are interested as scientists; 47 recipients are interested as business people; and 31 recipients are interested as members of a local authority dealing with cultural heritage
The objective of the project is the multi-dimensional documentation of a complex archaeological site, like the Modi and Alyssos rocks of the Meteora area, and the integration of the outputs in an appropriately structured database and visualization schema, in order to create an information system that can handle multiple data of heterogeneous types
Summary
Heterogeneous data management practices in the heritage sector are very important and demand increasing attention. Data volume is getting bigger, the variety of data sources is getting wider and the deriving value is getting even greater. These high-level requirements evolve in line with technological developments in 3D data acquisition, processing and visualization. The third dimension is necessary for web-based information systems (López et al, 2019), immersive gaming environments (Cipriani et al, 2019) and multiresolution visualization platforms (Agugiaro et al, 2011). Query and archiving workflows may vary from relational database systems and NoSQL approaches suited to big data, to semantic-based layouts (Ben Ellefi et al, 2019; ElMahgary et al, 2020)
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