HBIM, dibujo 3D y realidad virtual aplicados a sitios arqueológicos y ruinas antiguas

[EN] Data collection, documentation and analysis of the traces of ancient ruins and archaeological sites represent an inestimable value to be handed down to future generations. Thanks to the development of new technologies in the field of computer graphics, Building Information Modelling (BIM), Virtual Reality (VR) and three-dimensional (3D) digital survey, this research proposes new levels of interactivity between users and virtual environments capable of communicating the tangible and intangible values of remains of ancient ruins. In this particular field of development, 3D drawing and digital modelling are based on the application of new Scan-to-HBIM-to-VR specifications capable of transforming simple points (point clouds) into mathematical models and digital information. Thanks to the direct application of novel grades of generation (GOG) and accuracy (GOA) it has been possible to go beyond the creation of complex models for heritage BIM (HBIM) and explore the creation of informative 3D representation composed by subelements (granular HBIM objects) characterized by a further level of knowledge. The value of measurement, 3D drawing and digital modelling have been investigated from the scientific point of view and oriented to the generation of a holistic model able to relate both with architects, engineers, and surveyors but also with archaeologists, restorers and virtual tourists.[ES] La captura de datos, la documentación y el análisis de los restos de las ruinas antiguas y  de  los sitios arqueológicos representan una herencia inestimabile que debe ser transferida a las generaciones futúras. Gracias al desarrollo de las nuevas tecnologías en el campo de los gráficos por ordenador, el modelado de información de la construción (BIM), la realidad virtual (RV) y el levantamiento  digital tridimensional (3D), esta investigación propone nuevos niveles de interacción entre los usuarios y los entornos digitales que pueden comunicar los valores tangibiles e intangibles de los restos de las ruinas antiguas. En este particular ámbito de desarrollo, el dibujo 3D y la modelización digital se basan en la aplicación de las nuevas especificaciones escaneado-a-HBIM-a-RV, capaces de transformar puntos simples (nubes de puntos) en modelos matemáticos e informacción digital. Gracias a la aplicación directa de los GOG (grados of generación) y GOA (grados de exactitud) ha sido posible ir más allá de la creacción de los complejos BIM patrimoniales (HBIM) y explorar la creacción de representaciones 3D, formada por sub-elementos (objetos HBIM granulares) caracterizados por un mayor nivel de conocimiento. El valor de la medición, el dibujo 3D y el modelado digital ha sido investigado desde un enfoque científico y orientado a la generación de un modelo holístico capaz de relacionar tanto a arquitectos, ingenieros y aparejadores con arqueológos, restauradores y turistas virtuales.Banfi, F. (2020). HBIM, 3D drawing and virtual reality for archaeological sites and ancient ruins. Virtual Archaeology Review. 11(23):16-33. https://doi.org/10.4995/var.2020.12416OJS16331123Alby, E., Vigouroux, E., & Elter, R. (2019). Implementation of survey and three-dimensional monitoring of archaeological excavations of the Khirbat al-Dusaq site, Jordan. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W15, 41-47. https://doi.org/10.5194/isprs-archives-XLII-2-W15-41-2019Alia, A., & Cuomo, L. (2017). Bajardo 360: Strategie di rigenerazione per un borgo dell'entroterra ligure (Master's thesis Politecnico di Milano ICAR/21 Urbanistica).Antonopoulou, S., & Bryan, P. (Eds.). (2017). Historic England BIM for Heritage: Developing a Historic Building Information Model. Swindon: Historic England. Retrieved March 10, 2019, from https://historicengland.org.uk/imagesbooks/publications/bim-for-heritage/heag-154-bim-for-heritage/Anzani, A., Baila, A., Penazzi, D., & Binda, L. (2004). Vulnerability study in seismic areas: the role of on-site and archives investigation. In IV International Seminar on Structural Analysis of Historical Constructions (Vol. 2, pp. 1051-1059).Arayici, Y., Counsell, J., Mahdjoubi, L., Nagy, G. A., Hawas, S., & Dweidar, K. (Eds.) (2017). Heritage building information modelling. Abingdon: Routledge. Taylor & Francis. https://doi.org/10.4324/9781315628011Banfi, F. (2019). HBIM generation: extending geometric primitives and bim modelling tools for heritage structures and complex vaulted systems. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W15, 139-148. https://doi.org/10.5194/isprs-archives-XLII-2-W15-139-2019Banfi, F. (2017). BIM orientation: grades of generation and information for different type of analysis and management process. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII(2/W5), 57-64. https://doi.org/10.5194/isprs-archives-XLII-2-W5-57-2017Banfi, F., Brumana, R., & Stanga, C. (2019). Extended reality and informative models for the architectural heritage: from scan-to-BIM process to virtual and augmented reality. Virtual Archaeology Review, 10(21), 14-30. https://doi.org/10.4995/var.2019.11923Barba, S., Barbarella, M., Di Benedetto, A., Fiani, M., & Limongiello, M. (2019). Quality assessment of UAV photogrammetric archaeological survey. International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, XLII-2/W9, 93-100. https://doi.org/10.5194/isprs-archives-XLII-2-W9-93-2019Barazzetti, L., Banfi, F., Brumana, R., Gusmeroli, G., Previtali, M., & Schiantarelli, G. (2015). Cloud-to-BIM-to-FEM: Structural simulation with accurate historic BIM from laser scans. Simulation Modelling Practice and Theory, 57, 71-87. https://doi.org/10.1016/j.simpat.2015.06.004Binda, L., Anzani, A., Baila, A., & Penazzi, D. (2004). Indagine conoscitiva, per l'analisi di vulnerabilità, di due centri storici liguri. In XI Cong. Naz. L'Ingegneria Sismica in Italia (pp. 1-8). Padova: Servizi Grafici Editoriali.Bolognesi, C., & Aiello, D. (2019). The secrets of s. Maria delle Grazie: virtual fruition of an iconic milanese architecture. International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, XLII-2/W15, 185-192. https://doi.org/10.5194/isprs-archives-XLII-2-W15-185-2019Brumana, R., Banfi, F., Cantini, L., Previtali, M., & Della Torre, S. (2019). HBIM level of detail-geometry and survey analysis for architectural preservation. International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, XLII-2/W11, 293-299. https://doi.org/10.5194/isprs-archives-XLII-2-W11-293-2019Brumana, R., Condoleo, P., Grimoldi, A., Banfi, F., Landi, A. G., & Previtali, M. (2018). HR LOD based HBIM to detect influences on geometry and shape by stereotomic construction techniques of brick vaults. Applied Geomatics, 10(4), 529-543. https://doi.org/10.1007/s12518-018-0209-3Biagini, C., Capone, P., Donato, V., & Facchini, N. (2016). Towards the BIM implementation for historical building restoration sites. Automation in Construction, 71, 74-86. https://doi.org/10.1016/j.autcon.2016.03.003Böhler, W., & Marbs, A. (2004). 3D scanning and photogrammetry for heritage recording: a comparison. In S. Anders Brandt (Ed.), Proceedings of 12th International Conference on Geoinformatics (pp. 291-298). Gävle, Sweden.Caballero Zoreda, L. (2010). Experiencia metodológica en Arqueología de la Arquitectura de un grupo de investigación. In Actas del congreso Arqueología aplicada al estudio e interpretación de edificios históricos. Últimas tendencias metodológicas (pp. 103-119). Madrid: Ministerio de Cultura.Chiabrando, F., Lo Turco, M., & Rinaudo, F. (2017). Modeling the decay in an HBIM starting from 3D point clouds. a followed approach for cultural heritage knowledge. International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, XLII-2/W5, 605-612. https://doi:10.5194/isprs-archives-XLII-2-W5-605-2017Cogima, C. K., Paiva, P. V. V., Dezen-Kempter, E., Carvalho, M. A. G., & Soibelman, L. (2019). The role of knowledge-based information on BIM for built heritage. In Advances in Informatics and Computing in Civil and Construction Engineering (pp. 27-34). Cham: Springer. https://doi.org/10.1007/978-3-030-00220-6_4Cuca, B., & Barazzetti, L. (2018). Damages from extreme flooding events to cultural heritage and landscapes: water component estimation for Centa River (Albenga, Italy). Advances in Geosciences, 45, 389-395. https://doi.org/10.5194/adgeo-45-389-2018Della Torre, S. (2012). Renovation and post-intervention management. Annales, Series Historia et Sociologia, 22(2), 533-538.Diara, F., & Rinaudo, F. (2019). From reality to parametric models of cultural heritage assets for HBIM. International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, XLII-2/W15, 413-419, https://doi.org/10.5194/isprs-archives-XLII-2-W15-413-2019Dore, C., Murphy, M., McCarthy, S., Brechin, F., Casidy, C., & Dirix, E. (2015). Structural simulations and conservation analysis-historic building information model (HBIM). International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, XL-5/W4, 351-357. https://doi:10.5194/isprsarchives-XL-5-W4-351-2015Fai, S., & Rafeiro, J. (2014). Establishing an appropriate level of detail (LoD) for a building information model (BIM)-West Block, Parliament Hill, Ottawa, Canada. ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, II-5, 123-130. https://doi:10.5194/isprsannals-II-5-123-2014Fazio, L., & Lo Brutto, M. (2019). 3D Survey for the archaeological study and virtual reconstruction of the "Sanctuary of Isis" in the ancient Lilybaeum (Italy). Virtual Archaeology Review, 11(22), 1-14. https://doi.org/10.4995/var.2020.11928Garagnani, S., Gaucci, A., & Gruška, B. (2016). From the archaeological record to ArchaeoBIM: the case study of the Etruscan temple of Uni in Marzabotto. Virtual Archaeology Review, 7(15), 77-86. https://doi.org/10.4995/var.2016.5846Georgopoulos, A., (2018a). Contemporary Digital Technologies at the Service of Cultural Heritage. In B. Chanda, S. Chaudhuri, S. Chaudhury (Eds.), Heritage Preservation (pp. 1-20). Singapore: Springer. https://doi.org/10.1007/978-981-10-7221-5_1Georgopoulos, A., Ioannidis, C., Soile, S., Tapeinaki, S., Chliverou, R., Moropoulou, A., Tsilimantou, E., & Lampropoulos, K. (2018b). The role of Digital Geometric Documentation in the Rehabilitation of the Tomb of Christ. In 3rd International Congress & Expo Digital Heritage 2018. https://10.1109/DigitalHeritage.2018.8810044Grussenmeyer, P., Landes, T., Voegtle, T., & Ringle, K. (2008). Comparison Methods of Terrestrial Laser Scanning, Photogrammetry and Tacheometry Data for Recording of Cultural Heritage Buildings. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 37(B5): 213-218. https://www.isprs.org/proceedings/XXXVII/congress/5_pdf/38.pdfIoannides, M., Magnenat-Thalmann, N., & Papagiannakis, G. (2017). Mixed Reality and Gamification for Cultural Heritage. Cham: Springer. https://doi.org/10.1007/978-3-319-49607-8Khalil, A., & Stravoravdis, S. (2019). H-BIM and the domains of data investigations of heritage buildings current state of the art. International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, XLII-2/W11, 661-667. https://doi.org/10.5194/isprs-archives-XLII-2-W11-661-2019Korumaz, M., Betti, M., Conti, A., Tucci, G., Bartoli, G., Bonora, V., ... & Fiorini, L. (2017). An integrated Terrestrial Laser Scanner (TLS), Deviation Analysis (DA) and Finite Element (FE) approach for health assessment of historical structures. A minaret case study. Engineering Structures, 153, 224-238. https://doi.org/10.1016/j.engstruct.2017.10.026Kuo, C. L., Cheng, Y. M., Lu, Y. C., Lin, Y. C., Yang, W. B., & Yen, Y. N. (2018). A Framework for Semantic Interoperability in 3D Tangible Cultural Heritage in Taiwan. In Euro-Mediterranean Conference (pp. 21-29). Cham: Springer. https://doi.org/10.1007/978-3-030-01765-1_3Kumar, S. S., & Cheng, J. C. (2015). A BIM-based automated site layout planning framework for congested construction sites. Automation in Construction, 59, 24-37. https://doi.org/10.1016/j.autcon.2015.07.008Lerma, J. L., Navarro, S., Cabrelles, M., & Villaverde, V. (2010). Terrestrial laser scanning and close range photogrammetry for 3D archaeological documentation: the Upper Palaeolithic Cave of Parpalló as a case study. Journal of Archaeological Science, 37(3), 499-507. https://doi.org/10.1016/j.jas.2009.10.011López, F. J., Lerones, P. M., Llamas, J., Gómez-García-Bermejo, J., & Zalama, E. (2018). Linking HBIM graphical and semantic information through the Getty AAT: Practical application to the Castle of Torrelobatón. In IOP Conference Series: Materials Science and Engineering (Vol. 364, No. 1, p. 012100). IOP Publishing. https://doi.org/10.1088/1757-899X/364/1/012100Masiero, A., Chiabrando, F., Lingua, A. M., Marino, B. G., Fissore, F., Guarnieri, A., & Vettore, A. (2019). 3D modeling of Girifalco Fortress. International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, XLII-2/W9, 473-478, https://doi.org/10.5194/isprs-archives-XLII-2-W9-473-2019Nieto Julián, J. E., & Moyano Campos, J. J. (2013). La necesidad de un modelo de información aplicado al patrimonio arquitectónico. In 1er Congreso Nacional BIM-EUBIM. Valencia, Spain. https://pdfs.semanticscholar.org/4979/bf843da620460cdaa4c3520acd5d5ad8a23c.pdfNieto Julián, J., & Moyano Campos, J. (2014). The paramental study on the model of information of historic building or "HBIM Project". Virtual Archaeology Review, 5(11), 73-85. https://doi.org/10.4995/var.2014.4183Parrinello, S., Bercigli, M., & Bursich, D. (2017). From survey to 3D model and from 3D model to "videogame". The virtual reconstruction of a Roman Camp in Masada, Israel. DISEGNARECON, 10(19), 11.1-11.19.Penna, A., Calderini, C., Sorrentino, L., Carocci, C. F., Cescatti, E., Sisti, R., ... & Prota, A. (2019). Damage to churches in the 2016 central Italy earthquakes. Bulletin of Earthquake Engineering, 17(10), 5763-5790. https://doi.org/10.1007/s10518-019-00594-4Piegl, L., & Tiller, W. (2012). The NURBS book. Springer Science & Business Media. Cham: Springer.Previtali, M., Barazzetti, L., Banfi, F., & Roncoroni, F. (2019). Informative content models for infrastructure load testing management: the Azzone Visconti Bridge In Lecco. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W11, 995-100. https://doi.org/10.5194/isprs-Archives-XLII-2-W11-995-2019Pybus, C., Graham, K., Doherty, J., Arellano, N., & Fai, S. (2019). New Realities for Canada's Parliament: a Workflow for Preparing Heritage Bim for Game Engines and Virtual Reality. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W15, 945-952. https://doi.org/10.5194/isprs-archives-XLII-2-W15-945-2019Reina Ortiz, M., Yang, C., Weigert, A., Dhanda, A., Min, A., Gyi, M., ... & Santana Quintero, M. (2019). Integrating heterogeneous datasets in HBIM of decorated surfaces. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W15, 981-988. https://doi.org/10.5194/isprs-archives-XLII-2-W15-981-2019Riveiro, B., & Lindenbergh, R. (Eds.) (2020). Laser Scanning: An Emerging Technology in Structural Engineering. CRC Press. London: Taylor & Francis Group. https://doi.org/10.1201/9781351018869Rossi, C. (2019). Aristotle's mirror: combining digital and material culture. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W11, 1025-1029. https://doi.org/10.5194/isprs-archives-XLII-2-W11-1025-2019, 2019.Russo, M., Remondino, F., & Guidi, G. (2011). Principali tecniche e strumenti per il rilievo tridimensionale in ambito archeologico. Archeologia e calcolatori, 22, 169-198.Rua, H., & Alvito, P. (2011). Living the past: 3D models, virtual reality and game engines as tools for supporting archaeology and the reconstruction of cultural heritage-the case-study of the Roman villa of Casal de Freiria. Journal of Archaeological Science, 38(12), 3296-3308. https://doi.org/10.1016/j.jas.2011.07.015Scianna, A., Gristina, S., & Paliaga, S. (2014). Experimental BIM applications in archaeology: a work-flow. In Euro-Mediterranean Conference (pp. 490-498). Cham: Springer. https://doi.org/10.1007/978-3-319-13695-0_48Stampouloglou, M., Toska, O., Tapinaki, S., Kontogianni, G., Skamantzari, M., & Georgopoulos, A. (2019). 3D documentation and virtual archaeological restoration of Macedonian tombs. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W11, 1073-1080, https://doi.org/10.5194/isprs-archives-XLII-2-W11-1073-2019Saglietto G. (ND). Breve guida illustrata di Bajardo (Imperia). Municipality of Bajardo.Stanga, C., Spinelli, C., Brumana, R., Oreni, D., Valente, R., & Banfi, F. (2017). A n-d virtual notebook about the basilica of S. Ambrogio in Milan: information modeling for the communication of historical phases subtraction process. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W5, 653-660. https://doi.org/10.5194/isprs-archives-XLII-2-W5-653-2017Solarino, S. (2007). Il terremoto del 23 Febbraio 1887 in Liguria Occidentale, Descrizioni, considerazioni e prevenzione 120 anni dopo il grande evento, in "Memoria in occasione della mostra Terremoti: conoscerli per difendersi" . Retrieved from https://docplayer.it/18977788-Il-terremoto-del-23-febbraio-1887-in-liguria-occidentale-descrizioni-considerazioni-e-prevenzione-120-anni-dopo-il-grande-evento.htmlTrizio, I., Savini, F., Giannangeli, A., Boccabella, R., & Petrucci, G. (2019). The Archaeological Analysis of Masonry for the Restoration Project in HBIM. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W9, 715-722. https://doi.org/10.5194/isprs-archives-XLII-2-W9-715-2019Tucci, G., Conti, A., Fiorini, L., Corongiu, M., Valdambrini, N., & Matta, C. (2019). M-BIM: a new tool for the Galleria dell'Accademia di Firenze. Virtual Archaeology Review, 10(21), 40-55. https://doi.org/10.4995/var.2019.11943Quattrini, R., Clementi, F., Lucidi, A., Giannetti, S., & Santoni, A. (2019). From TLS to FE analysis: points cloud exploitation for structural behaviour definition. The San Ciriaco's bell tower. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W15, 957-964. https://doi.org/10.5194/isprs-archives-XLII-2-W15-957-2019Valente, R., Brumana, R., Oreni, D., Banfi, F., Barazzetti, L., & Previtali, M. (2017). Object-oriented approach for 3D archaeological documentation. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2/W5, 707-712. https://doi.org/10.5194/isprs-archives-XLII-2-W5-707-2017Yang, X., Koehl, M., & Grussenmeyer, P. Mesh-to-BIM: from segmented mesh elements to BIM model with limited parameters. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-2, 1213-1218. https://doi.org/10.5194/isprs-archives-XLII-2-1213-201

On the asymptotic behavior of the quasi-static problem for a linear viscoelastic fluid

In this paper we study the quasi-static problem for a viscoelastic fluid by means of the concept of minimal state. This implies the use of a different free energy defined in a wider space of data. The existence and uniqueness is proved in this new space and the asymptotic decay for the problem with non vanishing supplies is obtained for a large class of memory kernels, including those presenting an exponential or polynomial decay.Comment: 6 page

BIM AUTOMATION: ADVANCED MODELING GENERATIVE PROCESS for COMPLEX STRUCTURES

The new paradigm of the complexity of modern and historic structures, which are characterised by complex forms, morphological and typological variables, is one of the greatest challenges for building information modelling (BIM). Generation of complex parametric models needs new scientific knowledge concerning new digital technologies. These elements are helpful to store a vast quantity of information during the life cycle of buildings (LCB). The latest developments of parametric applications do not provide advanced tools, resulting in time-consuming work for the generation of models. This paper presents a method capable of processing and creating complex parametric Building Information Models (BIM) with Non-Uniform to NURBS) with multiple levels of details (Mixed and ReverseLoD) based on accurate 3D photogrammetric and laser scanning surveys. Complex 3D elements are converted into parametric BIM software and finite element applications (BIM to FEA) using specific exchange formats and new modelling tools. The proposed approach has been applied to different case studies: the BIM of modern structure for the courtyard of West Block on Parliament Hill in Ottawa (Ontario) and the BIM of Masegra Castel in Sondrio (Italy), encouraging the dissemination and interaction of scientific results without losing information during the generative process

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An Ontology-Based Representation of Vaulted System for HBIM

In recent years, many efforts have been invested in the cultural heritage digitization: surveying, modelling, diagnostic analysis and historic data collection. Nowadays, this effort is finalized in many cases towards historical building information modelling (HBIM). However, the architecture, engineering, construction and facility management (AEC-FM) domain is very fragmented and many experts operating with different data types and models are involved in HBIM projects. This prevents effective communication and sharing of the results not only among different professionals but also among different projects. Semantic web tools may significantly contribute in facilitating sharing, connection and integration of data provided in different domains and projects. The paper describes this aspect specifically focusing on managing the information and models acquired on the case of vaulted systems. Information is collected within a semantic based hub platform to perform cross correlation. Such functionality allows the reconstructing of the rich history of the construction techniques and skilled workers across Europe. To this purpose an ontology-based vaults database has been undertaken and an example of its implementation is presented. The developed ontology-based vaults database is a database that makes uses of a set of ontologies to effectively combine data and information from multiple heterogeneous sources. The defined ontologies provide a high-level schema of a data source and provides a vocabulary for user queries

The Role of Radiopharmaceuticals MIBG and (V) DMSA in the Diagnosis of Medullary Thyroid Carcinoma

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