1,721,098 research outputs found
Easy Survey Methods for the Representation of Abandoned Industrial Buildings
No full textThis paper shows the main results of a research project held with the purpose of exploring possibilities offered by semi-automatic low-cost image-based survey technologies to document abandoned industrial archaeological heritage that present high quality architectonical characteristics that can be highlighted through effective multi-scalar representations derived by the Computer Vision domain and that can be used within contexts of urban renewal programs
Synthetic Landscapes
No full textIn the field of visual arts, painted landscapes have always offered the opportunity for artists to prove their ability to faithfully portray natural scenes and vistas. In addition to that, this specific natural subject has often represented the manifestation of the level of cultural and technical knowledge of a society in its various historical moments.
Since contemporary digital technologies are now offering the possibility to directly derive spatial and matter characteristics of 3D objects and to interact with matter in digital environments, faithful depictions of Nature have become once again instrumental for investigations in representational tools. These kind of contemporary landscapes assume realism, familiarity, narrative, involvement of the audience as crucial ingredients, and re-open the debate about a new level of photorealism.
This paper collects the results of a three years research undertaken with the purpose of exploring how digital depictions obtained from high-definition reality-based acquisitions can contribute to widen the iconic visual repertoire of Nature and can be used as source of inspiration within the design process
ASSESSMENTS FOR 3D RECONSTRUCTIONS OF CULTURAL HERITAGE USING DIGITAL TECHNOLOGIES
No full textThe aim of this contribution is to show the results of evaluations on 3D digitizations performed using different methodologies and
technologies. In particular, for surveys conducted at the architectural and urban scale, the recent reduction of costs related to Time of
Flight and phase shift laser scanners is actually enhancing the replacement of traditional topographic instruments (i.e. total stations)
with range-based technologies for the acquisition of 3D data related to built heritage. If compared to surveys performed using
traditional topographic technologies, range-based ones offer a wide range of advantages, but they also require different skills,
procedures and times. The present contribution shows the results of a practical application of both approaches on the same case
study.
Another application was suggested by the recent developments in the photogrammetric field that enhance the improvement of
software able to automatically orient uncalibrated cameras and derive dense and accurate 3D point clouds, with evident benefits in
reduction of costs required for survey equipment. Therefore, the presented case study constituted the occasion to compare a rangebased
survey with a fast 3D acquisition and modelling using a Structure from Motion solution. These survey procedures were
adopted at an architectural scale, on a single building, that was surveyed both on the outside and on the inside.
Assessments on the quality of the rebuilt information is reported, as far as metric accuracy and reliability is concerned, as well as on
time consuming and on skills required during each step of the adopted pipelines. For all approaches, these analysis highlighted
advantages and disadvantages that allow to conduct evaluations on the possible convenience of adopting range-based technologies
instead of a traditional topographic approach or a photogrammetric one instead of a range based one in case of surveys conducted at
an architectural/urban scale
Rilievo digitale ad alta risoluzione della 'Piazzetta degli Ariani'
No full textIl contributo è volto ad illustrare i risultati del progetto di rilievo multi-scalare di Piazzetta degli Ariani avviato con lìobiettivo di sperimentare su un caso di studio concreto ma esem0lificativo di una tipologia di complessità che è ricorrente nel campo del rilievo architettonico, i vantaggi e gli svantaggi offerti da un rilievo strumentale tradizionale ed uno ad alta risloluzione mediante l'utilizzo di sensori attivi e passivi
Lo sfondato prospettico della Sala Urbana del Palazzo Comunale a Bologna. Appunti per una ipotesi interpretativa
No full textLo sfondato prospettico della Sala Urbana si inserisce nel ricco repertorio pittorico attribuito ad alcuni fra i più illustri maestri di questa arte decorativa ospitato nel Palazzo Comunale di Bologna. Questo contributo nasce con l’obiettivo di indagare gli aspetti geometrici e prospettici intrinseci di questa opera e di illustrare un processo conoscitivo che, andando a ritroso nel tempo, procede per continue verifiche e i rimandi fra vicende storiche e impostazioni teoriche e metodologiche, alla ricerca della interpretazione più plausibile dei meccanismi che hanno consentito di dilatare lo spazio edificato utilizzando i principi geometrico-percettivi sottesi a questa specifica composizione pittorica
Dal rilievo alle rappresentazioni ad alta risoluzione dello spazio architettonico continuo. Il caso di studio del complesso dell’Abbazia di Pomposa.
Full text linkIl progetto di rilievo e rappresentazione ad alta risoluzione dell’Abbazia di Santa Maria di Pomposa nasce con l’obiettivo di mettere a confronto differenti metodologie di rilievo e rappresentazione, valutare le prestazioni e le soluzioni più idonee finalizzate ad ottenere un rilievo e una rappresentazione complessiva dell’intero complesso abbaziale, che consenta restituzioni e analisi multi-scalari. Il presente contributo presenta alcuni dei risultati ottenuti dall’utilizzo integrato di tecniche di rilievo 3D e illustra alcune tipologie di analisi e rappresentazioni grafiche che possono essere condotte e riprodotte a partire dal dato complesso e multi-scalare acquisito. Il contributo mostra come tale approccio non sia destinato ad un singolo caso studio, ma partendo da esso possa essere esteso ad altri contesti che presentino simili criticità e potenzialità comunicative, spesso ricorrenti nel campo del rilievo e della rappresentazione dei Beni Culturali
Documenting lost heritage. The experience of the survey of architectures damaged by the earthquake in the Emilia area, Italy.
No full textOne year ago, the earthquake that devastated a wide architectural heritage in the Emilia area, in Northern Italy, gave rise to a series of surveys and investigations aimed at both documenting a lost or seriously compromised heritage and at recording information that can be used by different operators (i.e. fire departments, civil protection, engineers, architects, urban planners) and for different uses in different times, concerning the development of safety, recovery, restoration or demolition programs.
The characteristics of that particular earthquake damaged a wide variety of buildings concerning both historical centers, rural buildings and recent buildings, that were built using different technologies. The devastation also involved buildings in which documentation on built heritage was collected, such as, for example, land registries and other historical archives. As a consequence, the impossibility to rapidly recover the previously acquired documentation or its unavailability gave rise to extensive survey campaigns.
Besides the urgency of developing safety programs, in some cases, these survey campaigns were also motivated by the purpose of collecting information on heritages that share common architectural composition and structural characteristics and therefore belong to specific building typologies. These kinds of investigations are particularly useful in case studies such as, for example, rural buildings, that were not previously accurately and documented in detail.
In other cases, large scale documentation was mandatory in order to conduct a census of specific heritages, such as, for example, worship buildings, and their location on the territory, in order to plan their reconstruction, demolition or restoration based on actual needs and real possibilities of intervention.
The aim of this contribution is to show how digital methodologies and technologies can be used as an indispensable practice in order to produce graphic documentation about an architectural heritage that has been destroyed or severely damaged by a natural disaster. The presented case studies belong to a repertoire that ranges from single buildings to wider complexes that were selected for their historical and cultural importance and for the urgency of the development of intervention plans.
In all case studies, the aim of surveys was to collect the most detailed and accurate information compatibly with the reduced possibility of access to unsafe buildings. In particular, most of them have been surveyed just from the outside, using fast and non contact survey methodologies, while documentation of inside spaces was collected through photographic repertoires, preexisting documentation or specific targeted investigations. In some cases, documentation was also integrated and completed thanks to accurate descriptions that were reported by people who lived those spaces.
All accessible areas were acquired mainly using laser scanners; in some cases, when accuracy and definition were not priority tasks, the indirect measurement approach supported by orthophotos was adopted instead of a range-based one.
In other cases, a structure from motion approach was used in order to quickly reconstruct the integrity of collapsed elements
Metodiche integrate di rilievo 3D per l’analisi di architetture complesse. Il caso dell’Abbazia di Pomposa
No full text(abstract italiano) Nel campo del rilievo architettonico l'integrazione fra differenti metodi di acquisizione digitale tridimensionali consente di sopperire ai limiti dei singoli approcci per ottenere modelli sempre più completi, dai quali poter estrarre un numero di informazioni utili per differenti analisi. Questo contributo presenta una metodologia di rilievo integrata fra strumenti attivi e passivi, applicati da terra e da drone, al fine di ottenere un modello multi-risoluzione completo. Il caso studio oggetto della sperimentazione è l'Abbazia di Pomposa, a Codigoro (FE). //// (abstract inglese) In the field of digital 3D survey, integration among different methodologies and technologies offers the opportunity to overcome lacks of single techniques, building more complete and faithful 3D models and therefore deriving information that can be used for different kind of investigations. This contribution shows an integrated methodology between active and passive technologies applied from terrestrial and UAV point of views, aimed at creating complete and multi-resolution 3D models. The selected case study is the Pomposa Abbey, located near Ferrara, Italy
PARAMETRIC ACCURACY: BUILDING INFORMATION MODELING PROCESS APPLIED TO THE CULTURAL HERITAGE PRESERVATION
No full textSince their introduction, modeling tools aimed to architectural design evolved in today’s "digital multi-purpose drawing boards"
based on enhanced parametric elements able to originate whole buildings within virtual environments. Semantic splitting and
elements topology are features that allow objects to be "intelligent" (i.e. self-aware of what kind of element they are and with whom
they can interact), representing this way basics of Building Information Modeling (BIM), a coordinated, consistent and always up to
date workflow improved in order to reach higher quality, reliability and cost reductions all over the design process. Even if BIM was
originally intended for new architectures, its attitude to store semantic inter-related information can be successfully applied to
existing buildings as well, especially if they deserve particular care such as Cultural Heritage sites. BIM engines can easily manage
simple parametric geometries, collapsing them to standard primitives connected through hierarchical relationships: however, when
components are generated by existing morphologies, for example acquiring point clouds by digital photogrammetry or laser scanning
equipment, complex abstractions have to be introduced while remodeling elements by hand, since automatic feature extraction in
available software is still not effective. In order to introduce a methodology destined to process point cloud data in a BIM
environment with high accuracy, this paper describes some experiences on monumental sites documentation, generated through a
plug-in written for Autodesk Revit and codenamed GreenSpider after its capability to layout points in space as if they were nodes of
an ideal cobweb
Reconstructing the Lost Reality. Archaeological Analysis and Transmedial Technologies for a Perspective of Virtual Reality in the Etruscan City of Kainua
No full textThis paper presents the very first results of a three-year research program concerning the digital reconstruction of an entire Etruscan town, based on a philological analysis of archaeological data. The archaeological site and the adjacent museum will be then provided with suitable systems of perception and discovery of the archaeological reality, fully reconstructed due to innovative Transmedial Technologies based on Virtual Reality and, since this work is still in progress, studied through future digital models based on historic BIM process
- …
