British Museum blog

Recording old cauldrons with new techniques


Stephen Crummy, archaeological illustrator, British Museum

As illustrator in the Department of Prehistory and Europe at the British Museum, I am always looking for the best way to help our curators interpret an object. My role is to produce artwork that shows the form, construction and nature of objects and any decoration on them so that they can be clearly understood. This will usually result in illustration for academic publications and exhibitions as a result of research work on the Museum collection, or excavations.

Traditionally I have produced pen and ink technical drawings but new opportunities are available through various computer-generated methods of recording, analysing and understanding information about objects and excavation. With the Chiseldon Cauldrons material, I am exploring some of the possibilities of these new technologies, and in this case using photogrammetry and laser scanning programs to produce 3D records of the archaeological remains of individual cauldron blocks as they are excavated by Alex and Jamie.

Three-dimensional scan results

Three-dimensional scan results

We are using a laser scanning system to produce 3D computer models of the individual pieces from each cauldron. This is achieved by plotting a thin red laser line as it is slowly moved across the surface of an object. Having recorded each piece we are hoping to use the photogrammetry programme to virtually re-construct the blocks as excavated.

The early results we achieved proved somewhat variable, especially with the laser scanning, but we are now starting to produce some very good quality scans in terms of both modelling and colour accuracy.

The plan is to produce virtual models of each cauldron as excavated which will enable us to understand much better what they would have originally looked like, and how they were made. It is also hoped that an overall plan of the pit and its contents can be reproduced. We’ll also be able to produce artwork for both printed and online publication, and to generate virtual re-constructions for publication and display. As we create interesting images, we’ll also post some of them here on the blog so you can see what we’re finding.

The Chiseldon cauldrons research project is supported by the Leverhulme Trust

Find out more about this research project

If you would like to leave a comment click on the title

Filed under: Archaeology, Chiseldon cauldrons, Conservation, Research, , , , ,

One Response - Comments are closed.

  1. ritaroberts says:

    Conservation of the Chiseldon cauldrons sounds really interesting,as do your illustrations.I will be interested to see further results. The advance in technology these days is so rewarding in the field of archaeology.

    Like

Enter your email address to follow this blog and receive notifications of new posts by email.

Join 16,342 other followers

Categories

Follow @britishmuseum on Twitter

British Museum on Instagram

This photograph shows a mountainside in #Angola featuring large engravings which may be thousands of years old. This rock art is found at Tchitundu-Hulu Mulume, one of a group of four rock art sites located in the south-west corner of Angola, by the edge of the Namib desert. The area is a semi-arid plain characterised by the presence of several inselbergs (isolated hills rising from the plain). Of the four sites, Tchitundu-Hulu Mulume is the largest, located at the top of an inselberg, 726 metres in height. There are large engravings on the slopes of the outcrop, most of them consisting of simple or concentric circles and solar-like images.

Our #AfricanRockArt image project team have now completed cataloguing 19,000 rock art images from Northern, Eastern and Southern Africa, and will be completing work on sites from Southern African countries in the final phase of the project. Follow the link in our bio to find out more about our African #rockart image project and the incredible images being catalogued.
Photograph © TARA/David Coulson. Our #AfricanRockArt project team is cataloguing and uploading around 25,000 digital images of rock art from throughout the continent. Working with digital photographs has allowed the Museum to use new technologies to study, preserve, and enhance the rock art, while leaving it in situ.

As part of the cataloguing process, the project team document each photograph, identifying what is depicted. Sometimes images are faded or unclear. Using photo manipulation software, images can be run through a process that enhances the pigments. By focusing on different sets of colours, we can now see the layers that were previously hidden to the naked eye.

This painted panel, from Kondoa District in #Tanzania, shows the white outline of an elephant’s head at the right, along with some figures in red that it is possible to highlight with digital enhancement.

Tanzania contains some of the densest concentrations of rock art in East Africa, mainly paintings found in the Kondoa area and adjoining Lake Eyasi basin. The oldest of these paintings are attributed to hunter-gatherers and may be 10,000 years old.

Follow the link in our bio to learn more about the project and see stunning #rockart from Africa. This week we’re highlighting the work of our #AfricanRockArt image project. The project team are now in the third year of cataloguing, and have uploaded around 19,000 digital photographs of rock art from all over #Africa to the Museum’s collection online database.

This photograph shows an engraving of a large, almost life-sized elephant, found on the Messak Plateau in #Libya. This region is home to tens of thousands of depictions, and is best known for larger-than-life-size engravings of animals such as elephants, rhino and a now extinct species of buffalo. This work of rock art most likely comes from the Early Hunter Period and could be up to 12,000 years old.

Follow the link in our bio and explore 30,000 years of stunning rock art from Africa. © TARA/David Coulson. Watch the incredible discovery of this colossal statue, submerged under the sea of thousands of years. This colossal 5.4-metre statue of Hapy was discovered underwater in what was the thriving and cosmopolitan seaport of Thonis-Heracleion. It once stood in front of a temple and would have been an impressive sight for traders and visitors arriving from the Mediterranean.

Come face to face with the ancient Egyptian god Hapy for yourself in our‪ #SunkenCities exhibition, until 27 November 2016.

Colossal statue of Hapy. Thonis-Heracleion, Egypt. About 380-250 BC. Maritime Museum, Alexandria. © Franck Goddio/Hilti Foundation. The discovery of this stela, which once stood at the entrance of the main entry port into ancient Egypt, was an extraordinary moment. Its inscription detailing taxes helped solve a 2,000-year-old mystery!

This magnificent monument was crucial to revealing that Thonis (in Egyptian) and Heracleion (in Greek) were in fact the same city. The decree was issued by the pharaoh Nectanebo I, regarding the taxation of goods passing through the cities of Thonis and Naukratis, and it originally stood in the Temple of Amun-Gereb. The inscription states that this slab stood at the mouth of the ‘Sea of the Greeks’ (the Mediterranean) in Thonis.

A bilingual decree found in 1881 refers in its Greek inscription to ‘the Temple of Heracleion’ and in hieroglyphs to ‘the Temple of Amun-Gereb’. Together these objects revealed that Thonis and Heracleion were the same place.

Learn more about the deep connections between the great ancient civilisations of Egypt and Greece in our #SunkenCities exhibition.
Stela commissioned by Nectanebo I (r. 380–362 BC), Thonis-Heracleion, Egypt, 380 BC. © Franck Goddio/Hilti Foundation. For centuries nobody suspected that the #SunkenCities of Thonis-Heracleion and Canopus lay beneath the sea. Recorded in ancient writings and Greek mythology, the ancient Egyptian cities were believed to be lost.

Over the last 20 years, world-renowned archaeologist Franck Goddio and his team have excavated spectacular underwater discoveries using the latest technologies. The amazing rediscovery of these lost cities is transforming our understanding of the deep connections between the great ancient civilisations of Egypt and Greece.

See more magical moments of discovery in our #SunkenCities exhibition, until 27 November 2016. © Franck Goddio/Hilti Foundation.

#archaeology #diving #ancientEgypt
Follow

Get every new post delivered to your Inbox.

Join 16,342 other followers

%d bloggers like this: