1,721,080 research outputs found
Analytical methods for the projective content of Coronelli’s central Europe maps
Full text linkHistorical cartography constitutes a factual basis for a diachronic analysis of the city, land an places. Historical maps often contain information that cannot be found in other written sources, such as, for example, place names, boundaries, and physical characteristics that have been altered or completely erased by modern development. Analyzing historical maps makes it possible to understand the territory’s current configuration – which is the result of choices made in the past – and to critically assess evolutionary dynamics. The interventions of the past influence the present-day conformation in the same way that today’s interventions may someday influence the future.
The development of information technology has recently allowed an evolution in the methods of investigation and dissemination of historical maps, thanks to the introduction of intuitive and immediate interfaces, giving immediate access to complex functions and making them easier to be used than they were in the past. Generally, we are witnessing to a wide spread of new applications, even in disciplinary fields traditionally not involved in computer science, which are characterized by the simplicity in managing complex analysis and by the presence of tools for the visualization of results from a non expert wide public.
Descriptive and cognitive aspects of historical maps can be emphasized in a system where historical, geographical or economic data can be integrated; this tools, which are able to relate heterogeneous information in order to increase and improve their management and communicability, represent, in our time, the basic equipment for every research.
This paper deals with the Europe maps of Coronelli, contained in the Atlante Veneto, and wants to better understand which is the projective system better suitable to these historical cartography.
Recently a collection of ancient maps was found in the Institute of Marine Sciences of CNR in Venice. The collection includes maps, perspective views, pilot books, atlas (such as the Coronelli’s one that was used for the projective analyses) and ancient manuscripts: this work took into account a selection of maps and documents representing the Venice Lagoon, the Adriatic coast and a part of Europe.
The first part of this research focused on the application of a scientific method for digital acquisition of historical cartography; thanks to the Geomatic tools and especially to digital photogrammetry it is possible to acquire metric, semantic and symbolic information and also the three-dimensional shape of the geometrical support to correct the deformations occurred over time.
The applied procedure of recovery and valorisation of historical cartography is divided into three different phases: acquisition, georeferencing and data elaboration of maps in a digital environment. This paper underlines the application of a scientific procedure for the conservation and valorisation of the historical Cartographic Heritage, particularly considering the geodetical and projective content of european maps of Coronelli: as often stated in literature, most of the maps are topographically not accurate, especially regarding the north-south orientation (mainly because the magnetic declination was not known yet), and the projective system is not well defined. The georeferencing process and the residual analyses can offer some considerations on this topic
Laser-scanner e Beni Culturali: il rilievo della copertura lignea della Sala del Maggior Consiglio di Palazzo ducale a Venezia
No full textMetodi di elaborazione informatica per la ricostruzione cartografica: le trasformazioni territoriali delle Bocche di Porto di Venezia nella cartografia storica
No full textL’analisi tensoriale per il recupero di disegni e cartografie esistenti
No full textSolitamente il collaudo avviene con lo scopo di controllare il contenuto metrico e semantico di disegni al termine di un rilievo appena eseguito, sia per quanto riguarda la scala cartografica che quella architettonica. Ma difficilmente viene adottato nel reperimento di rilievi esistenti, in considerazione di un loro re-utilizzo in un progetto di conservazione o restauro. Spesso, infatti, ci si trova difronte a piante, sezioni e prospetti, realizzati in passato, con metodi e strumenti differenti, e ci si domanda quale sia la loro affidabilità e precisione. Inoltre, nel tentativo di ridurre i costi necessari per un intervento di restauro e conservazione, si riduce al minimo la voce relativa al rilievo, con le conseguenti lacune nel processo conoscitivo dell'architettura in esame. La qualità e la precisione di questi disegni può essere ri-valutata attraverso una fase di collaudo che impiega strumenti analitici già adottati nello studio del contenuto geometrico di cartografie storica: le trasformazioni piane e l’analisi tensoriale. Nel caso delle trasformazioni piane, si tratta di adottare un modello analitico di trasformazione (affine o conforme) che consenta di valutare e confrontare un set di punti ricavati dal rilievo esistente e i loro omologhi rilevati direttamente sull’oggetto. Nel secondo caso, la teoria elastica può fornire importanti informazioni riguardo le differenze geometriche tra due rappresentazioni dello stesso oggetto, ossia tra un disegno “storico” e una serie ridotta di punti rilevati ex novo. Si tratta dunque di ricercare dei parametri di deformazione locale, calcolati in specifiche aree del disegno. Introducendo delle grandezze invarianti e ulteriori trattamenti analitici, si può, in termini quantitativi, offrire una descrizione oggettiva delle alterazioni di un rilievo rispetto ad un altro. Le procedure di verifica di seguito descritte si muovono in questa ottica: non sempre bisogna intervenire con una campagna approfondita di rilievo, ma si possono ridurre le operazioni di campagna a favore di un recupero della documentazione esistente. Tale approccio consente un notevole taglio nelle spese, ma senza dover rinunciare ad una necessaria conoscenza metrica della fabbrica, attraverso una valutazione in termini di precisione degli elaborati già a disposizione. Gli autori, per approfondire lo studio sull’analisi tensoriale , hanno scritto un software che consente non solo il calcolo dei parametri della teoria elastica, ma anche di graficizzarne i contenuti, in considerazione della loro applicazione ai disegni di rilievo
From Point Cloud To Video Projection Mapping: Knowing Modern Architecture By Using Light Projection
Full text linkThe ClusterLab HeModern of the Università Iuav di Venezia has been working in recent years on the study, knowledge and conservation of 20th century architecture. This interdisciplinary research group (History of Architecture, Geomatics, Building Technology, Restoration Project) intends to investigate how to analyse and evaluate the state of conservation of the materials of which the modern architectural cultural heritage is composed by identifying specific application protocols for intervention, preservation and valorisation. In 2018, the collaboration between the above-mentioned ClusterLab, the LéaV of the Ecole nationale supérieure d'architecture in Versailles and the Archivio del Moderno of the Accademia di architettura in Mendrisio - Università della Svizzera italiana, culminated in the identification of the works and career of André Bloc as a case study. In the context of this study, the Tour, the Engineer's posthumous work, was selected to serve as a sample for research on the methods of communication of the contents of the architecture, the survey procedures used and the elaborations obtained. So, after the survey campaign, which took place via topographic, laser scanning and photogrammetric methods, two different levels of restitution were conceived: the first, made according to the canonical graphic paper methods, represents the procedural and surveying information, the material characterisation and the state of decay; the second elevates the same contents by applying them to physical reality. In this phase, the research focused on the possibility of making the different projects collaborate through the technique of rapid prototyping and video projection mapping. This particular form of augmented reality was used to enrich, through the mediation of light projections, the sensory perception of the observers by adding more information and emphasising those of greatest interest, proposing an alternative way of storytelling. In fact, unlike other forms of augmented reality, in the case of video projection mapping, the observer has the possibility to interact continuously with the physical reality, whose character is static, while the transmission of data is dynamic and can range in heterogeneity. The elaborations produced were presented in form of a museum exhibit at the international conference "Arti e architettura. Il contributo di André Bloc 1950-1970", which took place in the exhibition rooms of the Università Iuav di Venezia
The survey of cultural heritage: a long story
No full textThe conservation and enhancement of our cultural heritage (CH) require an exhaustive study in terms of position, shape, colour, geometry and also of the historical and artistic features. Survey methods have polished data acquisition techniques in line with technological progress. Today’s electronic and IT technologies, that are the tools of modern Geomatics, allow the effective survey and representation of 3D objects in different scales: from architectural structures to sculptures and also archaeological findings. All these respond perfectly to all the shades that our rich and versatile heritage present. This report does not really aim at explaining analytically the methods of Geomatics. Its main aim is to reflect on the relation between Geomatics and CH, not only highlighting their meaning but also and above all, their roots in the history of survey
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