Virtual Archaeology Review - Vol 13, No 26 (2022)
Tabla de contenidos
- Building archaeology informative modelling turned into 3D volume stratigraphy and extended reality time-lapse communication
- Lost archaeological heritage: virtual reconstruction of the medieval castle of San Salvador de Todea
- Parametric approach to the reconstruction of timber structures in Campanian Roman houses
- Promoting the heritage of the city of San Cristobal de La Laguna through a temporal link with a 16th century map
- Crania Canaria 2.0: constructing a virtual skull collection
- Dissemination, assessment and management of historic buildings by thematic virtual tours and 3D models
- Virtual and didactic approach to the defensive heritage of the 16th century Fort of the Trinitat (Roses, Girona)
- Digital models applied to the typological analysis of the olive oil mills with beam and weight presses in Écija
- Digitization and virtual reality projects in archaeological heritage. The case of the archaeological site of Motilla del Azuer in Daimiel (Ciudad Real)
- Documentation and analysis of a Roman anchor stock and its iconographic and epigraphic sealed elements
URI permanente para esta colecciónhttps://riunet.upv.es/handle/10251/180156
Examinar
Envíos recientes
Item type: Artículo , Access status: Abierto , Virtual and didactic approach to the defensive heritage of the 16th century Fort of the Trinitat (Roses, Girona)(Universitat Politècnica de València, 2022-01-21) Hernàndez-Cardona, Francesc Xavier; Sospedra-Roca, Rafael; Casals-Ausió, Josep Ramon; Universitat de Barcelona; Fundació Bosch i Gimpera; Ajuntament de Roses[EN] The Trinitat Fort, built in the mid-16th century, is an extraordinary example of European military architecture from the mid-16th century, conceived as an artillery machine, whose mission was to protect the natural port of Roses (Girona, Spain). The fortification had a long history of warfare that ended with the Peninsular War (1808–1814), which turned it into ruins. In 2002, the Roses city council planned an ambitious architectural intervention to recover the fortification. The works restored the overall exterior volumetry, with current construction materials. The large interior spaces resulting from the intervention had little in common with the original structures. Starting in 2016, the museum projected to open the fort to the public. The strategy focused on 3D works, which were used to plan museographic proposals and to make an interior space understandable, with an aspect very distant from that of the original construction. It entailed extensive fieldwork analyzing the sources and structural remains that were preserved and surmising the possible architectural solutions the fortress originally contained. Based on evidence and hypotheses, the group carried out a reconstruction from virtual archeology, and it developed a didactic iconography to explain the artifact to a broad spectrum of visitors and students. This iconography was applied on the panels, in the scenography and audiovisuals of the museum, and in the dissemination materials. The museography was implemented between 2019 and 2021. Considering the variables and comprehensive needs for a wide range of users and visitors, we completed the virtual archeology proposal based on realistic criteria, giving importance in 3D to textures and colors. It incorporated the anthropic and movable factors through matte painting techniques and images obtained with the support of re-enactment groups.Highlights: - The Fort of the Trinitat, built in the middle of the 16th century, is an extraordinary poliorcetic piece, conceived as an artillery machine, whose mission was to protect the natural port of Roses (Girona, Spain). - Between 2019 and 2021, an ambitious reconstruction of virtual archaeology has been carried out, developing a didactic iconography aimed at broad-spectrum visitors and formal education students. - The didactic iconography proposal developed in the Fort of the Trinitat does not try to compete with the large market productions, but it does try to explore sustainable intervention models to make the past and its heritage known.Item type: Artículo , Access status: Abierto , Promoting the heritage of the city of San Cristobal de La Laguna through a temporal link with a 16th century map(Universitat Politècnica de València, 2022-01-21) Pérez Nava, Fernando; Sánchez Berriel, Isabel; Pérez Nava, Alejandro; Gutiérrez Rodríguez, Virginia; Pérez Morera, Jesús; Fundación CajaCanarias; Fundació Bancària Caixa d'Estalvis i Pensions de Barcelona[EN] There is an increasing interest in the conservation of historical cities since they provide a link to the roots of their communities and bring cultural and economic benefits to their inhabitants. In this paper, we present an approach to promote the knowledge of the UNESCO World Heritage city of San Cristóbal de La Laguna in the Canary Islands, Spain. The city was founded in 1496 and has a unique value due to its urban design. In this work, we present a web application that allows a user to locate places and addresses of the current city in its first known map authored by Leonardo Torriani in the 16th century. To build this application we have georeferenced the ancient map in the current cartography. The georeferencing process needs the identification of homologous ground control points in the coordinate systems of both the old map and the current cartography, and the definition of a transform between them. Best results were obtained with the non-parametric natural transform interpolation leading to a global mean error of 4.9 m that reduces to 3.2 m in the historical city centre. To provide a fast response to the user of the web application, a technique to precompute offline the natural transform is presented. The web application has a simple front-end where the user fills the current city address in a form. This activates a query to obtain the geographical coordinates of the address that are transformed to map coordinates using the pre-computed transformation. These map coordinates are used by a map viewer in the front end that locates the user address in the ancient map. To test the performance of the web application, the load of the system has been analysed obtaining a latency of 1.4 s in 50 concurrent users. Results show that the web application provides accurate results in the historical centre while providing satisfactory response times.Highlights:- This study investigates the issue of georeferencing the first historic map (16th century) of San Cristóbal de La Laguna and the possibility to geolocate current city addresses.- By using the natural interpolation method, the georeferencing errors were diminished below 4 m in most of the historic city.- A user-friendly web application has been designed which precisely locates current directions in the old map providing a valuable tool for the promotion of the heritage of the city.Item type: Artículo , Access status: Abierto , Documentación y análisis de un cepo de ancla romano y sus elementos iconográficos y epigráficos sellados(Universitat Politècnica de València, 2022-01-21) Fernandez-Tudela, Elisa; Zambrano, Luis C.; Lagóstena, Lázaro G.; Bethencourt, Manuel; Ministerio de Ciencia, Innovación y Universidades; Agencia Estatal de Investigación; European Commission[EN] This paper aims to present the documentation and analysis methodology carried out on a lead trap from the ancient period, which belongs to the collection of traps in the Museum of Cádiz (Andalusia, Spain). The anchor stock had some interesting characteristics for this research. On the one hand, from the point of view of conservation and restoration, due to the alterations it presented. On the other hand, from a historical and archaeological point of view, it showed signs of reliefs on its surface hidden under the alteration products. The removal of the different layers of alteration that covered the surface during conservation and restoration treatments revealed an unpublished iconographic and epigraphic programme, as well as possible marks of use and manufacture. The poor state of conservation of the original surface made it impossible to visualise the details as a whole, so we applied photogrammetric methods, and subsequently processed models using various GIS analysis and point cloud processing softwares.Two photogrammetric models (in Agisoft PhotoScan) were made to document the trap in general: one prior to the conservation and restoration process; and a second three-dimensional (3D) model once the surface had been cleaned. The purpose of the second model was to visualise the reliefs programme in general, as well as the different surface details. The first complete 3D model of the object was used to perform a virtual reconstruction of the anchor including the elements that did not preserve, using a 3D modelling program (Blender).Nine areas of the stock surface were selected for the analyses of the various iconographic and epigraphic features, which were documented and processed in Agisoft PhotoScan. The Digital Elevation Model (DEM) and point cloud models were then processed with different analyses tools in Geographic Information System (GIS) (such as QGIS) and point cloud processing software (CloudCompare). Our results document a piece of highly interesting information from its surface consisting of reliefs of four dolphins; at least four rectangular stamps: two of them with possible inscriptions, and an anthropomorphic figure. Thanks to the comparative data, we conclude that the four dolphins were made with the same stamp during the stock manufacturing process. Further, we were able to reconstruct the dolphin stamp, partially preserved in each of the reliefs, by unifying the 3D models, thus revealing the original set. This system of stamping by means of reusable dies is well known in other elements such as amphorae but has not been studied in the specific case of lead traps.In the case of the epigraphic elements, the 3D documentation methodology revealed numerous micro-surface details, not visible under conventional documentation techniques, which could help specialists to interpret these inscriptions. Although they have not been analysed in this research, its documentation has promoted the appreciation of surface details that could refer to the manufacturing processes (moulds and tools) or the traces of use, providing historical information on this object. At the same time, the virtual reconstruction of the anchor has aided the formation of hypotheses on the dimensions and original appearance of the anchor. The different tools used, such as raster analysis using shadow mapping and point cloud alignment, proved to be very effective. They have fulfilled the established objectives and have helped to establish a possible analysis methodology for future lead traps with decorative elements. These types of artefacts recovered from underwater sites are very common in museum collections. In many cases, their state of conservation and the difficulty in handling them due to their size and weight make it difficult to document surface details. In this case, the multidisciplinary work of conservation and 3D documentation allows for higItem type: Artículo , Access status: Abierto , Proyectos de digitalización y realidad virtual en el patrimonio arqueológico. El caso del yacimiento de la Motilla del Azuer en Daimiel (Ciudad Real)(Universitat Politècnica de València, 2022-01-21) Torres Mas, Miguel; López-Menchero Bendicho, Víctor Manuel; López Tercero, Julio; Torrejón Valdelomar, Juan; Maschner, Herbert[ES] Este artículo tiene como objetivo presentar el proyecto de virtualización del yacimiento arqueológico de la Motilla del Azuer, en la localidad de Daimiel (Ciudad Real, España). En líneas generales, esta actividad está posibilitando obtener unos beneficios interesantes en torno a la investigación, documentación, interpretación y divulgación de este enclave prehistórico. La incorporación de herramientas tecnológicas en el campo del patrimonio arqueológico y cultural, como la documentación digital y la realidad virtual (RV), están constituyendo un impulso relevante para favorecer la gestión de este legado. Los avances experimentados en áreas como la digitalización 3D y la RV permiten desarrollar estas técnicas sobre una amplia tipología de bienes culturales, de diferentes características y cronologías, abriendo un considerable abanico de posibilidades. En este sentido, las valoraciones que está ofreciendo la aplicación de estos instrumentos, en virtud de los resultados alcanzados en diversos lugares, están significando una experiencia positiva para cualquier territorio; útil para aproximarse a su pasado y atractivo desde el punto de vista económico, cultural y social. Es por ello que cada vez son más las instituciones y entidades interesadas en este sector. En el caso del yacimiento arqueológico de la Motilla del Azuer, las labores de digitalización y virtualización emprendidas, junto con otras actividades de difusión, han generado productos de gran utilidad para el conocimiento y promoción de este monumento. Como se expone en las siguientes páginas, la correcta combinación de la digitalización 3D y la RV está suponiendo una dinamización de sus contenidos, un estímulo para disfrutar plenamente de la riqueza de sus vestigios y una mayor accesibilidad hacia los mismos.Destacados:• Este artículo presenta un proyecto que está permitiendo avanzar en la interpretación y difusión del yacimiento arqueológico de la Motilla del Azuer.• Apuesta por la incorporación de las nuevas tecnologías en la gestión del patrimonio arqueológico y cultural• Desarrollo de una experiencia provechosa para favorecer la accesibilidad al patrimonio e impulsar la democratización cultural a través de su proyección.Item type: Artículo , Access status: Abierto , Digital models applied to the typological analysis of the olive oil mills with beam and weight presses in Écija(Universitat Politècnica de València, 2022-01-21) Moya-Muñoz, Jorge; Pinto-Puerto, Francisco; Ministerio de Ciencia, Innovación y Universidades[EN] For centuries, mills with beam and weight presses have been the production units used in the town of Écija to obtain the oil. The intensification of olive tree cultivation in the 18th century gave rise to the proliferation of these constructions throughout the town, which at one point was home to no less than 286 mills of this type. However, by the mid-20th century events surrounding the local olive groves caused many of them to fall into disuse. Nowadays, the mills present an advanced state of decay, to the extent that many of them have disappeared partly or completely. In view of the functional nature of these production units and the short space of time in which they were built, we decided to conduct a typological study aimed at identifying any common patterns in their design. The geometric and proportional relationships between their constituent parts obtained using digital information models (Geographic Information System (GIS), 3D point clouds and databases) enabled us to determine standard structures based on ranges of deduced values. The repetition of these patterns suggested that it would be useful to create a graphical database using a parameterised HBIM (Historic Building Information Modelling), which in turn facilitates the introduction of attributes associated with these mills from a dynamic database, therefore favouring interoperability in heritage management as a response to the critical situation of the mills today. At the same time, the correspondence in the relationships of proportionality between the mills analysed typologically and the model of a 16th-century mill, suggests that 18th-century mills were adapted to patterns developed in older presses.Highlights:- The typological study of the Écija (Seville) mills with beam and weight presses reveals common patterns in these preindustrial buildings.- The proportional relationships between their constituent parts obtained using digital information models enabled us to determine standard structures. - These patterns have similarly enabled us to generate a parameterised HBIM model as a standard graphical base for the historical mills in Écija.Item type: Artículo , Access status: Abierto , Dissemination, assessment and management of historic buildings by thematic virtual tours and 3D models(Universitat Politècnica de València, 2022-01-21) De Fino, Mariella; Bruno, Silvana; Fatiguso, Fabio[EN] The digitalization of the historical-architectural heritage for virtual reality (VR) applications is crucial within the contemporary scientific and technical debate for several aspects. In fact, beyond the exploration for education and entertainment purposes, the employment of three-dimensional (3D) reality-based and computer-based models and environments seems to be very promising for performance assessment and risk management as well. Particularly, in order to develop and validate smart, low-cost and user-friendly tools, which might apply even in cases of limited time and budget, the present paper is going to propose a methodological workflow based on thematic virtual tours of 360° scenes, which integrate a variety of informative contents and digital products as external hotspots/switches. The VR tours, where 3D models might play a key role for an accurate representation of relevant parts and/or analytical elaboration of further data, are conceived as flexible and scalable solutions, supporting users, technicians and authorities through remote access, diagnosis of the state of conservation and communication of safety measures. The application of the proposed methods and techniques to a representative case study, the Norman-Swabian Castle of Gioia del Colle (Ba), South Italy, is presented in order to illustrate the achievable results and highlight the benefit of innovative “digital” solutions for data collection, storage and communication, compared to the traditional “analogical” practices. In detail, a Web-GIS platform, developed within a previous research project, is integrated with direct links to three thematic virtual tours that provide added contents for inclusive dissemination (timeline schemes, aerial views, 3D sculptural and architectural details), performance assessment (diagnostic reports, decay maps, 3D reconstructions of technical components) and risk management (exit signs, help instructions, warnings). Thus, the VR tours, while documenting realistically the state of the site, might act as host environments of digital products, at increasing complexity, all displayed according to an intuitive and accessible communication approach.Highlights:• Virtual tours of 360° scenes, linking thematic digital contents, are proposed as intuitive and versatile tools for smart documentation, conservation and protection of historical buildings.• The role of 3D reality-based and computer-based models is discussed toward their integration and correlation within thematic virtual tours of 360° scenes.• The potential of immersive environments for sharing knowledge about conservation issues and training users on safety measures in historic buildings is underlined.Item type: Artículo , Access status: Abierto , Crania Canaria 2.0: constructing a virtual skull collection(Universitat Politècnica de València, 2022-01-21) Serrano-Ramos, Alexia[EN] El Museo Canario stores a large collection of aboriginal skulls that have been essential to the study of the origin and chronology of the population of the Canary archipelago since the 19th century. Regrettably, research has been dominated by biased and racial interpretations of both bioarchaeological and cultural evidence. When scientific racism and craniometric studies were rejected, studies of the Canarian indigenous skulls variability was also abandoned without replies. However, digital technologies and virtual sciences allow us to improve research and re-evaluate old paradigms. In this work, we present a digitalisation project aiming to construct a virtual database of the indigenous Canarian skulls, using a simple method of digitalisation that is very suitable to deal with large collections- The procedure, involving a portable 3D structured light scanner has allowed us to digitally reproduce more than 400 skulls stored at Museo Canario. This work offers a wide variety of possibilities for archaeology and anthropology. The versatility of 3D digital models enables the generation of interactive documentation, educational material for digital conservation and dissemination purposes. Indeed, 3D models are easily shared and can be displayed over diverse web-based repositories and online platforms and so, creating virtual online museums. We have created a profile in Sketchfab (https://sketchfab.com/craniacanaria2.0) where we intend to upload gradually the complete virtual collection of skulls we have realised. Moreover, digital skulls can serve as research objects. We discuss the advantages of studying 3D objects in a computerised environment, which includes traditional anthropometric studies (linear measurements and angles) but also 3D geometric morphometric approaches. In fact, in future studies, we will apply 3D geometric morphometrics for reassessing skull variation of ancient Canarians going beyond old paradigms and taking into account the latest advances in archaeology, anthropology and genetics in Canarian research. Highlights:- El Museo Canario stores an exceptional human skull collection that has served as the basis for numerous studies seeking to reveal the origin and chronology of the indigenous population.- This study presents an easy methodology for obtaining digital imagery using a 3D surface scanner, which allows constructing a virtual skull collection comprising more than 400 individuals.- Virtual 3D models have numerous advantages and applications in anthropology and archaeology, not only improving research but also permitting the re-evaluation of old paradigms.Item type: Artículo , Access status: Abierto , Parametric approach to the reconstruction of timber structures in Campanian Roman houses(Universitat Politècnica de València, 2022-01-21) Sbrogiò, Luca; Università degli studi di Padova[ES] La reconstrucción virtual de la arquitectura antigua tiene como objetivo describir la altura y el volumen ‘originales’ de un edificio desaparecido. Los vestigios arqueológicos débiles que dejan las casas, a menudo limitados a sus cimientos, dificultan el restablecimiento de su imagen, en contraste con lo que es posible gracias a las estructuras macizas de los edificios públicos. Surge un problema doble cuando se trata de estructuras de madera durante el procedimiento de reconstrucción: a la escala local de la viga individual (por ejemplo, viguetas o travesaños), se debe definir la sección transversal de una viga dada su luz; a escala general, la forma de un edificio resulta de lo que sus estructuras permitieron que fuera. Por tanto, este trabajo propone un procedimiento para abordar el problema ‘local’, es decir, la definición de la sección transversal de una viga a partir de su luz. Para ello, se requiere un modelo estructural paramétrico simplificado. Los bits de información disponibles se organizan en entradas, parámetros y salidas del problema analítico haciendo coincidir cada información con una cantidad estructural (carga, sección transversal, espaciado, etc.). Se proponen dos relaciones matemáticas entre ellas, que expresan dos criterios de dimensionamiento igualmente posibles, basados en la resistencia o deformabilidad de las viguetas. Parece que la resistencia de la vigueta fue la opción para viguetas con poca carga, como en techos o marcos de piso con espacios reducidos; por el contrario, las viguetas muy cargadas se ajustaban al criterio de deformabilidad. Ambos procedimientos de dimensionamiento se traducen en un algoritmo visual en Grasshopper, un complemento para el software de modelado Rhinoceros, que permite la definición paramétrica de objetos. Finalmente, el procedimiento propuesto se aplica provisionalmente para reconstruir automáticamente los marcos de piso y techo que pertenecían a la Domus en la parte superior de los baños de Sarno en Pompeya. El algoritmo eligió automáticamente el criterio de dimensionamiento en relación con el tramo de cada marco y las cargas hipotéticas y determinó la orientación de las viguetas y las secciones transversales mínimas. Los marcos de piso obtenidos, cuyas condiciones estructurales se consideran sensibles, se adoptarán en la propuesta de reconstrucción virtual general de las ruinas, también en base a la evaluación analítica de las estructuras de mampostería.Item type: Artículo , Access status: Abierto , Lost archaeological heritage: virtual reconstruction of the medieval castle of San Salvador de Todea(Universitat Politècnica de València, 2022-01-21) Valle Abad, Patricia; Fernández Fernández, Adolfo; Rodríguez Nóvoa, Alba Antía[EN] The medieval castle of San Salvador de Todea constitutes a remarkable paradigm for the rock castles of Galicia and the northwest of Spain, attending to its features but also to the destruction it was subjected. The hill where it stands was the object of various archaeological interventions led from 2016 to 2018, that identified the site as a medieval fortress and recovered part of its structures. Being one of few medieval castles of the 12th-15th centuries in Galicia subjected to consecutive interventions and actively studied. Although the excavations provided an important amount of information about the chronology, distribution, material culture and even diet of the inhabitants, the interpretation of the castle is really complex. The preserved remains correspond to the foundations of the structures, mainly a few walls and a high amount of carvings scattered over the hill. This paper gathers the results of the investigation developed to create a reconstructive hypothesis for the castle and its materialization in a digital model, as a way to interpret and understand its structure. To achieve this aim, we combined the analysis of the archaeological data and the geomorphology of the own hill, with the study of fortresses with similar disposition and chronology, and the appliance of architectonical rules, in a multidisciplinary study. In order to generate a reasonable, justified and scientific model of the castle, useful as an instrument to study and comprehend this type of construction. The resulting model shows the disposition, height and entity of the structures that conformed to the castle, the transit areas and indoor spaces, and provides new data to calculate the visibility and predominance of the construction over the landscape, among others. Finally, to ensure the rigour and scientific approach of the reconstruction, we utilised a scale of certainty level to show the results, along with photorealistic textures to recreate the probable aspect of the castle. Highlights: - Virtual reconstruction of a Late Medieval rock castle, from the archaeological remains recorded during the excavations of the site and the comparison with similar structures. - Overview of the reconstruction methodology, decision-making process and resulting constructive hypothesis, with a detailed description of the level of certainty of each part. - Multidisciplinary approach to achieve a scientific model that helps to understand the castle distribution and its importance on the control of the landscape.Item type: Artículo , Access status: Abierto , Building archaeology informative modelling turned into 3D volume stratigraphy and extended reality time-lapse communication(Universitat Politècnica de València, 2022-01-21) Banfi, Fabrizio; Brumana, Raffaella; Landi, Angelo Giuseppe; Previtali, Mattia; Roncoroni, Fabio; Stanga, Chiara; UNESCO[EN] This paper describes the case study of the damaged church of St. Francesco in the hamlet of Arquata del Tronto (Italy) that was struck by the earthquake in 2016. The municipality commissioned the research to support the preliminary design of the preservation plan. The first digitisation level has been started from the richness of surveying data acquired from static and dynamic terrestrial laser scanning (TLS), and photogrammetry, overcoming challenging constraints due to the scaffolding covering the surfaces. The geometric survey allowed authors to acquire massively geometric and material information supporting the three-dimensional (3D) volume stratigraphic and the creation of the Heritage Building Information Modelling (HBIM). The paper proposes a shift from the Geographic Information System (GIS)-based analysis of the materials toward spatial HBIM management. Building Archaeology is turned into HBIM 3D volume stratigraphy, overcoming the bidimensional (2D) surface mapping, in favour of a 3D understanding of direct and indirect sources. Material mapping is added to HBIM 3D volume stratigraphy, and each stratigraphic unit (SU) has its proprieties. The 3D volume stratigraphic database has been designed to collect the data on the unit detection at three levels (direct sources data collection, indirect data documentation, the relation among the BIM object elements). A common data environment (CDE) has been set up to share the 3D volume informative models that can be accessed, and all the information gathered. The knowledge transfer using the eXtended reality (XR) has been devoted to the citizen and tourist fruition, enhancing the comprehension of difficult concepts like the SUs to support a better critical 3D reconstruction. It includes the phases of construction across time-lapse documentation that validates related information within the building archaeology informative models leaving spaces to the uncertainty and documenting the relationship established so far thanks to the direct and indirect sources. The result obtained is a live digital twin that can be continuously updated, which justifies the costs and time demanding of HBIM despite 2D drawings.Highlights: • 3D survey and scan-to-HBIM process for the creation of a digital twin were oriented to the preliminary design of the preservation plan of the church of St. Francesco in Arquata del Tronto (Italy). • Stratigraphy is investigated and oriented towards a digitisation process to share different levels of knowledge through new forms of digital-sharing such as Common Data Environment (CDE) and cloud-based BIM platform. • eXtended reality (XR) is the final tool to reach new levels of communication and a wider audience characterised by experts in the construction sector and virtual and non-expert tourists.