New technology that makes it possible to study the finer details of ancient artefacts has been developed
Dr Kirk Martinez at the University of Southampton’s Electronics and Computer Science (ECS) and the team have developed two Reflectance Transformation Imaging (RTI) systems to capture images of documentary texts and archaeological material. The systems takes 76 pictures of artefacts with the light in different positions, then creates a new type or RTI image. The viewer can then move the virtual light anywhere and focus on the detail.
“Hewlett Packard Research Laboratories invented this technology a few years ago and it has been used sporadically around the world,” said Dr Martinez. “What we have done is develop the technology so that it is fast enough to be usable every day in a museum situation where you have lots of objects that need scanning.”
The technology is currently being used in the Ashmolean Museum in Oxford and it has recently been tested in the British Museum and in the National Gallery.
During the course of the project, the teams scanned 100 clay tablets, most of which were typically about 5,000 years old.
“If you really wanted to look at a picture to investigate fine details at the moment without this technology, you would be hard pressed to see any detail on current archive photos – and may need to re-photograph,” said Dr Martinez.
The RTI technology systems developed by the project will allow researchers to study documentary and other artefacts remotely in great detail without being restricted by fixed lighting angles. The result will be to ensure that high-quality digital versions of these materials can be consulted by scholars worldwide.
The software developed for these systems will be available open source online this autumn together with a guide to making your own system.
See the technology on YouTube.