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rti

Postcard from Iberia: RTI recording of Palaeolithic cave and rock art in Spain and Portugal

Marta Díaz-Guardamino and Paul Pettitt recording Palaeolithic art in El Castillo Cave, Spain It was 40oC in the direct sun, too hot and too bright to head into Portugal’s Côa valley to record the open-air Paleolithic rock engravings of this World Heritage Site, so we waited until 8pm, until the temperature reached a slightly more manageable 32oC, and more importantly the sun was setting behind the steep side of the valley. Continue reading →

Ultraviolet RTI

A painted and incised ceramic vessel was used as case study in an attempt to evaluate the efficiency of Reflected UV (UVR) RTI and UV induced visible fluorescence (UVF) RTI. Gnathian skyphos from the University of Southampton Archaeological Collection The Highlight RTI data capture took place at the archaeological imaging laboratory of the University of Southampton, using a UV-VIS-IR modified DSLR camera, adequate filters and lighting. Continue reading →

Student Research: Recording Church Graffiti

Vicky Man is currently an undergraduate Archaeology student. She dug at Basing House in 2013, and is now coming into her third year at the University of Southampton. Vicky has been working on her major project since the beginning of the summer and spent the field season this year with us at Basing House collecting data for her research and working with staff and volunteers to think about how to tackle her fascinating topic. Vicky has written a blog post introducing her research. Continue reading →

Postcards from the field: Studying the Neolithic figurines from Koutroulou Magoula, Greece

Clay Neolithic figurines are some of the most enigmatic archaeological objects, which depict in a miniature form humans, animals, other anthropomorphic or zoomorphic beings, and often hybrid or indeterminate entities. Figurines have excited scholarly and public imagination, and have given rise to diverse interpretations. The assemblage from Koutroulou Magoula, a Middle Neolithic site – 5800-5300 BC – in central Greece (excavated under the co-direction of Prof. Continue reading →

Update on the Hoa Hakananai’a Statue

In 2012 ACRG members, James Miles and Hembo Pagi, completed a series of RTI captures and a photogrammetry model of the Easter Island Statue, Hoa Hakananai’a, which is currently housed in the British Museum. Since then, in collaboration with Mike Pitts, we have examined the results of these RTI files and compared them with the photogrammetry model. A brief discussion of this work can be seen in a previous blog post. Continue reading →

Conservation and computational imaging technologies

Silver roman imperatorial denarius of Julius Caesar, CAESAR /Aeneas advancing to front, holding Palladium in palm of right hand and carrying father Anchises on left shoulder (O 19 mm), Archaeological Museum of Amphipolis, clockwise from top left: digital image, comparison between PTM (top) and a standard computer graphic approximation (below), normal map and RTI visualization in specular enhancement rendering mode (c) Eleni Kotoula I’m Eleni Kotoula, a PhD student in the Archaeological... Continue reading →

Annotating RTI data in 3d and 2d

I’ve been talking to a lot people in recent months about annotation frameworks for RTI and today’s introduction to the #rodeimagingevent (see Hembo’s blog post) has crystalised some of these. I was talking to @kathrynpiquette about annotation and I also tweeted a query to @iipimage about it. @portableant suggested annotorious (something that I know our current MSc student Vassilis Valergas has been examining) and also openCanvas was suggested. Continue reading →

Papyrus RTI case study

The Derveni tombs discovered in 1962 close to Thessaloniki in North Greece are considered one of the most significant archaeological sites in northern Greece because of their numerous rich grave offerings and their important location in the ancient Mygdonian city of Lete, on the pass of Via Egnatia. The cemetery comprises seven graves, and according to the excavation publication dates to 320–290 BC. Continue reading →