Search results for " 3d modeling"
showing 10 items of 33 documents
Il Portico meridionale della Cattedrale di Palermo: sperimentazioni di rilievo attraverso l’utilizzo di tecniche Structure from Motion
2014
Structure from Motion (SfM) techniques constitute a very fertile field of investigation within the research of the surveying sector and that of the representation of architecture. They allow us to reach higher levels of reliability and accuracy, both metric and graphical, extremely quickly and with lower costs than other methods, including the laser scanner. In this study, we report the results of some experiments carried out on the southern Portico entrance of the Cathedral of Palermo through the use of the SfM techniques later validated by comparison with the point cloud obtained from laser scanning.
Integration of terrestrial laser scanning and UAV-SFM technique to generate a detailed 3D textured model of a heritage building
2020
The digital twin is among the Top 10 of the strategic technological trends for the period 2007-2019, and it represents a powerful tool for the conservation and enhancement of cultural heritage. It reproduces with "precision" a physical asset, thus allowing to investigate its structure and to analyze the deformations that occur over the years. Various techniques have been introduced to obtain high-resolution 3D models. Among these, the Terrestrial Laser Scanner (TLS) is widely recognized as the gold standard to generate accurate 3D metric reconstructions. TLS allows acquiring a lot of data (point cloud) in a fast way, being not in physical contact with the objects of investigation. By integr…
Crowdsourcing Cultural Heritage: From 3D Modeling to the Engagement of Young Generations
2016
Monitoring, digitizing and archiving museum artworks represent an important socio-cultural accomplishment and an overcoming in digital preservation today. Cultural heritage is constantly under threat of terrorist attacks and natural disaster. The high costs related to documentation task have prevented a constantly and massive survey activity. The low cost 3D image based acquisition and elaboration techniques of an object, allow to carry out a 3D photorealistic model in a short time. Therefore, a lot of museum adopted these techniques for the artworks archiving. Crowdsourcing activities can significantly speed up survey and elaboration procedures. If, on the one hand, these initiatives can h…
Low cost system for visualization and exhibition of pottery finds in archeological museums
2015
The objective of this project is to build a low-cost system for surveying, modeling, prototyping and interactive visualizing aimed at the enhancement of islamic pottery finds of X – XI centuries. The system will allow various applications: the creation of systems for displaying artifacts from the museum alongside the exhibition, the virtual view of restorations from fragments, including AR and VR, the physical reconstruction of the original form using 3D printer to show the pieces in their entirety, as well as the construction of interactive virtual archives to be made available to scholars and visitors.
A 3D reworking of the urban transformations of Palermo in recent history for a hypothesis of a "City Museum" based on digital visualizations
2021
The objective that drives this research is given by a multitude of information which, in addition to the contribution of technology, allows us to study, analyze, verify and remodel the sites, monuments and evolutions of the city through graphic processes of perspective restitution that start from the analysis of historical photos. The drawing methods, the digital graphic rendering and through the aid of geometric techniques, contribute to the reconstruction of projects and architectures that are now lost, this is possible thanks to the methods of perspective, axonometry and three-dimensional restitution. This remarkable photographic heritage belonging to Palermo, but also to any other city …
Digital Technologies for Cultural Heritage Preservation. A case study.
2014
Within the study and knowledge of Cultural Heritage, the Virtual Restoration represents an innovative technical-scientific sector that involves the use of Information and Communications Technologies (ICT) within traditional and well-established methodologies. The study illustrates a practical experience carried out on a cycle of sculptural works made in stucco that currently shows a number of fragmentary and disjointed parts. In this research a methodological approach is described, whose aim was to build a 3D model and formulate an hypothesis of virtual recomposition of the fragments. In addition, it provided useful geometrical-formal support tools both for the physical-material restoration…
Tecnologie digitali per la conservazione dei Beni Culturali. Un'esperienza di studio.
2014
Nell'ambito dello studio e della conoscenza dei Beni Culturali, il restauro virtuale rappresenta un innovativo settore tecnicoscientifico che mette a servizio di metodiche tradizionali già consolidate lo sviluppo di nuove Tecnologie per l'Informazione e la Comunicazione (TIC). Il contributo presenta un'esperienza applicativa condotta su un ciclo di opere scultoree realizzato in stucco che, allo stato attuale, si presenta frammentato e scomposto nelle sue parti. Si descrive il percorso metodologico strutturato, finalizzato alla realizzazione di un modello 3D e allo studio di ipotesi di ricomposizione virtuale dei frammenti, che ha fornito utili strumenti di indagine geometrico-formale di sup…
Heritage and technology: novel approaches to 3D documentation and communication of architectural heritage
2015
In the past few years we have seen a drastic increasing of image-based modeling (IBM) techniques to get high quality reality-based 3D models. The low costs of these techniques as well as their attractive visual quality have lead many researchers and professionals to invest their energies and resources in several tests. The use of IMB in the field of cultural heritage is mostly exploited in applications such as documentation, digital restoration, visualization, inspection, planning, AR/VR, conservation and design. One of the strengthen of multi-view stereo techniques is the possibility to capture millions of points in a very short time and to get a 3D textured polygonal model that can be eas…
Tecnologie digitali per la valorizzazione del patrimonio culturale. La rappresentazione di beni non accessibili
2017
Il contributo rientra nel filone delle sperimentazioni di comunicazione multimediale e di ricostruzione virtuale di architetture e frammenti urbani. Il lavoro presenta i risultati di alcune applicazioni digitali che adoperano il linguaggio multimediale per consentire la fruizione virtuale di siti per diverse ragioni non accessibili, per raccontare un percorso reale o concettuale. I casi studio analizzati si configurano quali possibili prodotti strategici di divulgazione e comunicazione per la conoscenza e la comprensione del patrimonio culturale e per la veicolazione di contenuti scientifici. The contribution is part of the study and experimentation of multimedia communication, virtual anal…
The project for the “Galleria Oretea” by Giuseppe Damiani Almeyda and other unbuilt “passages” in Palermo
2022
The contribution aims to conjecturally reconstruct and analyze the unrealized project by Giuseppe Damiani Almeyda regarding the “Galleria Oretea” for Palermo. It is an urban project of considerable size and impact, which should have provided the city of Palermo, in the old town, with a gallery in the style of the Parisian “passages”, inspired by the contemporary creations of Milan and Naples. Thanks to the recent cataloging and publication of the entire corpus of drawings in the Damiani Archive, a reinterpretation of the project was carried out through a three-dimensional recomposition of the immersed in the places where it was originally conceived. Two other projects were developed for the…