300 research outputs found
Virtualizing Ancient Rome: a new hybrid digital model of late-antique Rome
No full textThe project discussed in this presentation forms an important part of the Rome Reborn Project, an international effort to create a real-time digital model of ancient Rome. The spatial limits of the Rome Reborn model will be the area enclosed by the late-antique Aurelian Wall; its temporal limits will be the Iron Age (10th century B.C.), when the city began to be settled, and the Gothic Wars (6th century A.D.), when the city suffered severe physical damage and significant depopulation. For a variety of practical reasons, work on the model commenced in 1997 with modeling of the late-antique phase (ca. 400 A.D.), which represents the climax of the development of the ancient city in terms of its urban fabric and population. The approach to modeling has been to work out from the city center in the Roman Forum, a multi-purpose space dedicated to political, economic, religious, and entertainment activities
L'interrogazione digitale di plastici urbani
No full textIl modello fisico di una città rappresenta un sistema attraverso il quale conservare alcune delle informazioni che aiutano nella lettura di una realtà che in alcuni casi può non essere più esistente. In questo caso il plastico urbano è come un contenitore di dati, alcuni dei quali immediatamente percepibili ed altri più nascosti per motivi di scarsa accessibilità del manufatto, complessità formale del modello fisico o semplicemente per un mancato trasferimento di informazioni dal costruttore del modello a chi ne usufruisce. In tutti i casi la migliore soluzione per ottenere tali informazioni è fornita dalla digitalizzazione tridimensionale del modello fisico e la sua successiva interrogazione. Il principale limite di questo processo è legato alla necessità di ottenere modelli digitali con un livello di precisione coerente con le caratteristiche geometriche del modello fisico e la tipologia di informazioni che si vuole ottenere. Nell’articolo viene descritto un caso di studio emblematico, la digitalizzazione del ‘Plastico di Roma Antica’, un modello fisico di grandi dimensioni caratterizzato da una geometria complessa, che pone in evidenza una serie di problematiche di acquisizione e di gestione dei dati rilevati. Viene presentato un possibile esempio di interrogazione del modello digitale finalizzato all’identificazione delle informazioni non valutabili direttamente dal modello fisico e le potenzialità insite nell’uso di un modello procedurale
Virtualizing ancient Imperial Rome: from Gismondi's physical model to a new virtual reality application
No full textThis paper deals with two, related topics: the acquisition and recovery of information 'trapped' in the geometry of an historical artifact; the employment of this form of 'intangible heritage' as an historical source on a par with more explicit sources such as ancient drawings, books, archaeological excavations, etc. This study relates to the construction of a virtual model of ancient Rome within the framework of the international project known as "Rome Reborn 1.0" (www.romereborn.virginia.edu). It exploits intangible information in order to make a plausible reconstruction of ancient Rome, currently one of the largest virtual models ever developed in the field of cultural heritage
Three-dimensional acquisition of large and detailed cultural heritage objects
No full textCultural heritage digitization is becoming more common every day, but the applications discussed in the literature address mainly the digitization of objects at a resolution proportional to the object size, using low resolution for large artifacts such as buildings or large statues, and high resolution for small detailed objects. The case studied in this paper concerns a huge physical model of imperial Rome (16 × 17.5 m) whose extremely small details forced the use of high resolution and low noise scanning, in contrast with the long range needed. This paper gives an account of the procedures and the technologies used for solving this “contradiction”
ROME REBORN – VIRTUALIZING THE ANCIENT IMPERIAL ROME
No full textFrom 1997 to 2007 an international effort involving research groups both in US and Italy, developed a virtual model of ancient Rome, as it appeared in 320 AD. The primary purpose of the project was to visually present theories and hypotheses about how the capital of the Roman Empire appeared at the peak of its development. The model is therefore a representation of the state of our knowledge (or lack of it) about the urban topography of ancient Rome. In order to create the model several topographic and historical sources were used. The standard sources such as ancient plans, references in historical texts, archaeological studies of past scholars, have been used for the well documented monumental buildings, such as the Colosseum and the Roman Forum. For most of the vernacular architecture (i.e. the small “filler ” buildings in between the monumental ones), no many sources are available. Thus the virtual model have been inspired by the famous 1:250 physical model “Plastico di Roma Antica ” conserved at “Museo della Civiltà Romana”, in Rome that have been surveyed at high resolution and transformed in a digital model suitable for standard virtual reality applications. This paper overstress this point of the whole project, describing the process from the physical to the digital representation of the city. 1
The Indiana University-Uffizi project: Metrologica! challenges and workflow for massive 3D digitization of sculptures
No full textUntersuchung der Fähigkeit von B-Zellen zur Antikörperproduktion nach Kryokonservierung
No full textThis doctoral thesis proves that memory B cells and B cell blasts withstand cryopreservation and keep their ability to produce antibodies which improves and simplifies B cell monitoring. Therefore the exclusive use of fresh B cells is no longer necessary.Diese Arbeit beweist, dass B-Gedächtniszellen und Plasmablasten ohne Verlust ihrer Fähigkeit zur Antikörperproduktion und -sekretion kryokonserviert werden können. Die mögliche Kryokonservierung hat den Vorteil, dass B-Zell-Immunität ohne die Notwendigkeit zur Gewinnung frischer B-Zellen gemessen werden kann
3D acquisition and modeling of a large plaster of ancient Rome
No full textThis paper describes 3D acquisition and modeling of the “Plastico di Roma antica”, a large plaster-of-Paris model of imperial Rome (16x17 meters) created in the last century. Its overall size demands an acquisition approach typical of large structures, but it also is characterized by extremely tiny details typical of small objects: houses are a few centimeters high; their doors, windows, etc. are smaller than 1 centimeter. The approach followed for solving this “contradiction”, generating a huge but precise 3D model by using a special metrology Laser Radar, is described. The procedures for reorienting the huge point clouds obtained after each acquisition step (50-60 millions of points each) in a single reference system thanks to the measurement of fixed redundant references, are reported. A proper splitting of the data set in 2x2 meters sub-areas for allowing data merge and mesh editing is finally shown
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