159 research outputs found
Approccio interdisciplinare nella didattica: applicazioni di rilievo finalizzati alle attività di progettazione
No full textI temi, le lezioni e i progetti degli studenti contenuti in questo libro sono il risultato del Laboratorio di Progettazione Architettonica 1 presso la Scuola di Architettura Urbanistica Ingegneria delle Costruzioni del Politecnico di Milano, A.A. 2017-2018, tenuto da Vittorio Prina (Composizione Architettonica e Urbana) con: Andrea Vercellotti (Progettazione Architettonica) Fausta Fiorillo (Tecniche della Rappresentazione), Tutor: Riccardo Genta, Alessandro Mandelli
A metrological study of the Late Roman Fort of Umm al-Dabadib, Kharga Oasis (Egypt)
No full textThis article contains a first metrological analysis of the Late Roman Fort of Umm al-Dabadib, built at the beginning of the 4th century AD at the outskirts of the Kharga Oasis, in the Egyptian Western Desert. This site is currently under study by the Italian Archaeological Mission to Umm al-Dabadib; after completing the 3D survey of the building, the team moved to the study of its dimensional patterns. The resulting 3D model was tested for the use of Roman and Egyptian units of measurement, and revealed that the building was planned and built according to the Egyptian Reformed Cubit. The Fort of Umm al-Dabadib, therefore, currently represents the latest attestation of the use of the Egyptian cubit in architecture
Digital Survey in Bramante's Masterpieces
No full textThis paper is part of a current of researches that deal with the survey of Cultural Heritage as the first tool of knowledge and dissemination of the memory and value of ancient architecture. The progress of survey techniques and the spread of new tools and measurements instruments obliges frequents update in our project; the survey also compares itself with progression over the time, especially when the context of interest is broad as in the case here described. Here the complex of Santa Maria delle Grazie has been surveyed starting from the Chiostro delle Rane and Old Sacristy, including the room of the Candle man, by Donato Bramante, the Chiostro del Priore, built through the years with the aid of Beltrami and Portaluppi, and the New Sacristy. The cathedral survey and the Last supper room together with The Chiostro dei Morti has not yet been included; this first part has been considered as a first crosssection enough to present first problems, techniques and aims. In addition, the destination of the survey in progress has been evaluated on a broad spectrum: from comparison with other Bramante’s masterpieces to the map rendering of some of its decorated parts to theconstruction of simple meshes for the reconstruction of virtual environments. This is the reason why some part of the complex hasbeen surveyed with more attention and high-detail while other with more simplicity and low-detail, not only to spare time
Restitución de datos láser escáner para el análisis del deterioro de bóvedas de ladrillo
No full textThe research, based on a real case, analyses the subsidence of the brick vaults. The goal is to identify a method of plotting data capable of detecting the critical zones of the vault, subject to further and detailed investigation.
In order to avoid a preliminary investigation of the vault with moderate vibration, it will be illustrated the possibility to implement a laser-scanner to code a procedure capable of detecting areas potentially damaged.
Through the transformation of point clouds in CAD data, it has been possible a further analysis of critical areas of the vault soffit down to the last centimetre. Drawing the deformations with different colours, based on the intensity of the subsidence, it has been possible to obtain a new representation, which clearly displays the critical areas. The results will be compared through the use, for example, of endoscope, to validate the method, and the representation and the use of the laser-scanner in the analysis of sagging of the brick vaults.
In conclusion, it will be illustrated the use of Rhinoceros for future applications: the 3D modelling will be used for a more specific analysis of the curvature of the vault
Virtual Representations of Cultural Heritage: Sharable and Implementable Case Study to Be Enjoyed and Maintained by the Community
No full textThis paper is related to the field of digital-informed modelling of heritage assets (HBIM). The scientific literature has been addressing this topic for years with many different facets: focusing digitalization on the analysis and modelling of heritage asset geometries, construction, development over time, or the representation of materials and degradations. This research aims not only to optimize the common digital workflows but also to demonstrate the effectiveness of digitalization and virtual reality applications in preserving the memory of places. Furthermore, a strategy for the maintenance of cultural heritage through virtual reality in a participatory process is proposed. The applied method develops appropriate new workflows and tools to enable enjoyment of monuments of the developed case study remotely; moreover, it allows the creation of content from ordinary users that can be incorporated into the digital models over time. Therefore, virtual and augmented reality environments are proving to be effective methods even for non-experts to understand space, allowing for active citizenship involvement
Un corretto approccio alle tecniche di fotogrammetria low-cost: il caso di 123D Catch
No full textL’articolo si focalizza sulla possibilità di realizzare ricostruzioni tridimensionali del patrimonio architettonico, implementando un’applicazione gratuita della Autodesk che permette di trasformare le prese fotografiche in vere e proprie scene 3D. Il funzionamento del software si basa sull’automatizzazione di un processo di reverse modelling, così, assumendo sempre validi i principi della fotogrammetria, è possibile stimare e conoscere la posizione nello spazio di ogni punto fotografato (ovviamente, purché collimabile in almeno tre prese). In particolare, le macchinose operazioni di riconoscimento dei punti omologhi avverranno per mezzo di un algoritmo di cloud computing, non richiedendo quindi, potenti calcolatori e limitando, di fatto, l’intervento del restitutore in questa fase. Le prese fotografiche impiegate per le elaborazioni grafiche che illustrano il contributo provengono da remoto, ovvero sono state collezionate in rete, acquisendole da fotografi e/o turisti anonimi, rintracciate e recuperate attraverso siti web di condivisione, per dimostrare così la possibilità di ottenere una foto-ricostruzione, sempre da remoto, di un’architettura nella sua geometria, texture ed colore. Infatti, la finalità di questo studio è anche quella di rendere disponibile, a un pubblico sempre più vasto, eventualmente anche privo di conoscenze specialistiche, informazioni valide e necessarie per tutelare architetture di interesse storico-artistico, preservandole dal possibile oblio, e favorirne la conoscenza attraverso l’utilizzo di queste nuove applicazioni per il rilievo dell’architettura. Sulla base del caso studio, quindi, si dimostrano le potenzialità ed anche gli eventuali limiti (valutando l’accuratezza del risultato finale) di queste nuove tecniche fotogrammetriche – semplici e automatiche – che sulla base di prese fotografiche dello stato attuale (o anche del passato, come nel caso di edifici ormai distrutti) permettono di coadiuvare le operazioni di recupero, anche solo virtuale, e la documentazione e valorizzazione del patrimonio architettonico, riportando alla luce tracce oramai perdute
3D modeling for documentation and monitoring of landslide risk: A case study
No full textThe case study presented in this poster tries to demonstrate how useful can be the application of laser scanning for a rapid appraisal of landslide risk, through monitoring and estimating landslide volumes. © 2012 IEEE
ANALYSIS OF HISTORICAL DOCUMENTATION ACCURACY AIMED TO SEMANTICALLY-ENRICHED 3D REPRESENTATIONS
No full textThe paper aims to highlight the close relationship among a historical monument, its frequent surveys over the centuries and their accuracy as useful information for researchers and technical experts involved in the relative restoration or reconstruction works. The study presents some comparisons between existing maps/drawings and recent 3D measurement with digital techniques of the Santa Maria delle Grazie church (Milano). Final aims are to i) understand the correctness of the historical documentation and update technical drawings, ii) identify the architectonic transformations and iii) using 3D modeling as a database for possible semantically-enriched representations
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