Abstract
This paper proposes a methodology to rationalize the process of reconstruction of no more existing or designed but never built architectures. The methodology focuses on the following aspects of the hypothetical digital 3D reconstructions: sources (e.g., gathering, use, documentation), representation method (e.g., geometry, scale, segmentation, 3D modelling), and visualization (e.g., textures, light, point of view, projection method). The method was thought to be as objective, clear, transparent, and reproducible as possible, and it aims to generate 3D digital reconstructions of comparable quality and reusable in various scenarios. It was put to test for several years at the architectural drawing courses of the University of Bologna; one hundred students per class each academic year. The methodology presented is based on an iterative process of calibration of input and outputs based on annual trials. The 3D models constructed were archived in a repository and the retrospective annual assessment fostered critical observations. On the one hand, the method produces, in most cases, comparable, traceable, and reusable models for various purposes (e.g., visualization, semantic analysis, geometrical study, historical study, 3D printing, virtual exploration, etc.). On the other hand, the methodology aims to improve learning and foster architectural cultural heritage knowledge.
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Acknowledgement
Some figures (Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 9) were extracted (and elaborated) from the case study curated by the students Matilde Barchi and Molly Jade Davey of the University of Bologna.
CoVHer (Computer-based Visualisation of Architectural Cultural Heritage) is an Erasmus Plus Project (ID KA220-HED-88555713) [7, 8]. It is a 36 monthly project and it started in February 2022. There are seven principal partners from five different European countries. The partners are University of Bologna (Bologna, Italy), Hochschule Mainz University of Applied Sciences (Mainz, Germany), Politechnika Warszawska (Waraw, Poland), Universidade Do Porto (Porto, Portugal), Universitat Autonoma de Barcelona (Barcelona, Spain), Tempesta Media SL (Barcelona, Spain), Interessengemeinschaft für semantische Datenverarbeitung e.V (München, Germany). The scholars currently involved in the project are (the order of persons follows the institution to which they belong): Fabrizio Ivan Apollonio, Federico Fallavollita, Riccardo Foschi, Irene Cazzaro, Piotr Kuroczyński, Jan-Eric Lutteroth, Igor Bajena, Krzysztof Koszewski, Franczuk Jakub, Karol Argasiński, Joao Pedro Sampaio Xavier, Clara Pimenta do Vale, Hugo Pires, Juan Antonio Barceló Álvarez, Evdoxia Tzerpou, Marc Hernández Güell, Raquel Garcia, Pol Guiu and Mark Fichtner.
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Apollonio, F.I., Fallavollita, F., Foschi, R. (2023). An Experimental Methodology for the 3D Virtual Reconstruction of Never Built or Lost Architecture. In: Münster, S., Pattee, A., Kröber, C., Niebling, F. (eds) Research and Education in Urban History in the Age of Digital Libraries. UHDL 2023. Communications in Computer and Information Science, vol 1853. Springer, Cham. https://doi.org/10.1007/978-3-031-38871-2_1
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