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3D Scanning in the 3D-Pitoti Project

Christian REINBACHER1 / Manuel HOFER1 / Christian MOSTEGEL1 / Craig ALEXANDER2 /Gert HOLLER3 / Thomas HÖLL3 / Axel PINZ3 (1Institute of Computer Vision and Graphics, Graz University of Technology, Austria / 2McDonald Institute for Archaeological Research, University of Cambridge, UK / 3Institute of Electrical Measurement and Measurement Signal Processing, Graz University of Technology, Austria) Abstract: The video shows the 3D scanning of a large rock panel in Valcamonica (Seradina I rock 12C, approx. 20 x 20m), performed within the European 3D-Pitoti project. The rock is scanned at two spatial scales, at a mid-level by an unmanned aerial vehicle, and at a micro level, by a novel, custom developed micro-range rock-art scanner. A novel on-line structure-from-motion pipeline provides online user feedback about already scanned areas and expected coverage by a sufficient number of images. The micro-range scanner can reconstruct surface geometry in 3D up to approx. 0.1mm, and radiometric surface properties beyond phototexture by using bright custom illumination and a novel frame differencing principle. Acknowledgements: The research leading to these results has received funding from the EC FP7 project 3D-PITOTI (ICT-2011-600545). We thank MiBACT-SBA Lombardia and the Parco Archeologico Comunale di Seradina-Bedolina for permission to scan at Seradina I rock 12C....

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“Entwicklung der Heuneburg” (Development of the Heuneburg) | Language: German

CONTRIBUTER: (Landesamt für Denkmalpflege im Regierungspräsidium Stuttgart, Germany) Abstract: Based on the present state of knowledge about this site of European importance, this short animated film takes us through the development of the of The Heuneburg during the late Hallstatt period. Produced In full HD, it is both scientifically accurate and easy to understand for the interested public. It was created this year on the occassion of the reopening of the Heuneburg Museum in the hamlet of Hundersingen overlooking the Danube Valley, only 2,5 Kilometres from the Heuneburg...

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De Maas uitgediept (The Meuse in depth) (in Dutch)

Ellen VREENEGOOR / ECHO tekst&presentatie (National Heritage Agency of the Netherlands) Abstract: Climate change and recent flooding led to a huge program in the Netherlands to strengthen the river dikes and deepen the rivers in order to make space for floodwaters in the future. This project, of course, has a huge impact on the landscape an the archaeology in the river areas. In order to bring the heritage aspects into the mind of the engineers the Cultural Heritage Agency has made a video, in cooperation with Echo tekst&presentaties, on the history of the Meuse river. This video contains 3D reconsructions and new archaeological and geological research. The whole video has been made as an informative, yet entertaining film in order to reach a wide public. Keywords: landscape archaeology, maritime archaeology, Romans, middle ages, river...

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“The Obelisk, Meridian and Ara Pacis of Augustus”

Bernard FRISCHER / Paolo ALBÈRI AUBER / Orietta ROSSINI (Indiana University, Bloomington, Indiana, USA) Abstract: This video was featured in the exhibition, “Augustus: The Art of Command,” which was shown in the Ara Pacis Museum (Rome, Italy) from April to September 2014 on the occasion of the two thousandth anniversary of the death of Rome’s first emperor. The video presents a 3D reconstruction of the northern Campus Martius, a part of the city of special interest to Augustus and which he was the first to develop. Several key monuments survive from Augustus’ intervention, including the first obelisk brought to Rome (the so-called Montecitorio Obelisk) and the Ara Pacis, a 10 x 11 m altar open to the sky decorated with a series of reliefs that represent the peak of Roman art in the Augustan age. The monuments have been re-erected in new sites in the modern city, and the area of the ancient city where they originally stood has changed beyond all recognition. Only through a 3D reconstruction model could this part of Rome be restored to the way it appeared in the reign of Augustus (30 BC – 14 AD). The team behind the video resurveyed the monuments and created a scientific 3D reconstruction model accurate to +/- 1 cm. It also used altazimuth data from NASA’s highly accurate Horizons System in order to simulate the path of the sun through the sky during the reign of Augustus. The concept is that the video illustrates the proximity and alignment of the Obelisk and Ara Pacis. It also illustrates the innovative published research of Albèri Auber, who showed that the obelisk functioned as the gnomon of a giant meridian whose purpose was to facilitate calculation of the leap year by the Romans. In the thirty six years prior to construction of this monumental complex, the Romans had miscalculated the leap year, which was already in error by three years when Augustus assumed responsibility as pontifex maximus for the maintenance of the religious calendar. The informational value of the video is high: it shows the way in which the shadow cast by the gnomon onto the meridian moves from year...

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3D Scanning in hard-to-reach places

A practical hands-on workshop Advanced Archaeological Training W8 Organiser | Bernhard Mayrhofer, VirtuMake | Olga Zinchenko, Artec Group, Luxembourg The workshop focuses on the high-resolution 3D digitizing of objects where gaining access for scanning equipment is either complicated, or impossible. Examples include scanning in sub-Saharan Africa, remote areas of Ireland and at archaeological sites. The projects featured in the workshop were completed successfully thanks to the use of Artec Group’s state-of-the-art portable 3D scanning technology. In the workshop, attendees will first learn about the possibilities of 3D scanning in the harsh conditions of in-the-field research work, the difficulties arising during this process and possible solutions based on case studies of completed heritage conservation projects. The workshop also features the practical demonstration of 3D scanning of various objects. Attendees are welcome to have a go and try out the 3D scanners for themselves. The workshop is facilitated by Artec Group and VirtuMake.  ...

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The Marble Inventory of the Early Christian Basilica San Saturnino/Cagliari-Sardinia

Silvana Maria GRILLO1 / Walter PROCHASKA2 (1Dipartimento di Geoingegneria e Tecnologie Ambientali, Facoltà di Ingegneria Cagliari University, Italy / 2Department of Applied Geological Sciences and Geophysics, University of Leoben, Austria) Abstract: The San Saturnino Basilica of Cagliari was built in the fifth century A. D. and is situated in the place where, according to tradition, St. Saturnino was beheaded in 304 AD. The early Christian Basilica is considered one of the most significant of the Mediterranean. It is surrounded by an archaeological park, where some excavations have revealed several Roman and Byzantine tombs. During the centuries the Church underwent many restorations. In the late seventeenth century the building was partly demolished to recover materials for the restoration of the Cagliari Cathedral. After substantial air-raid damage during the Second World War, extensive renovations and partial rebuilding were necessary. The new Church was re-opened to the public not until 1996. The main construction materials of the church are different local limestones – Pietra Forte and Pietra Cantone – from several quarries in the region. The decorative architectural elements preserved basically are red, grey and white marble columns. The preliminary identification of these coloured marbles so far is Cipollino Rosso from Iasos /Asia minor, and marbles from Lesbos and Carystum. Preliminary petrographic and geochemical studies showed that Carrara marble is the material of the white marble columns. Other fragments of white marbles as column bases, capitals and a sarcophagus are presently being analyzed for their provenance. Especially the white Carrara marble columns are in an extremely bad condition due to weathering and the crystallization of different salts, resulting in sugary corrosion and sanding of the columns. Both provenance studies of the marble inventory and also investigations on the mechanism of the salt deterioration will be presented. Keywords: marble provenance analysis, weathing and...

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