3D Icons project, and 3D Icons Ireland
Channel: Recording Archaeology
Date: 2016-06-20

As a partner in the EU co-funded 3D-ICONS project, the Discovery Programme undertook the 3D documentation of some of the most iconic cultural heritage sites in Ireland. This pan-European project aimed to establish a complete pipeline for the production of 3D replicas of archaeological monuments and historic buildings, and to publish the content to Europeana for public access. The list of Irish icons range from wider cultural landscapes to smaller ornately carved stones and includes a wide range of chronological periods: neolithic rock art from 2500 BC to Derry's 17th Century fortifications.
The primary digitisation methods include airborne laser scanning (ALS), phase-based terrestrial laser scanning (Faro Focus 3D) and close range structured light scanning (Artec EVA). These are now mainstream approaches for surveying historic landscapes, structures and objects, generating precise, high resolution point cloud data, primarily for viewing and interaction in proprietary software applications. The challenge was to convert these complex high volume data sets into textured 3D models, retaining the geometric integrity of the original data. The paper highlights the development of a pipeline to produce a lightweight 3D model which enables the public to interact with a photorealistic model based upon accurate survey and texture data. 
3D-ICONS ended in January 2015, but a new website 3dicons.ie was launched to offer continued access to the Irish 3D models and associated content and media generated during the project. The paper will consider the impact of this online content, particularly how it has been used as a teaching aid in secondary schools and how this may be extended in the future. It will also demonstrate how content from the project has been re-modelled to develop an interactive and immersive experience for the great mound at Knowth, a development in partnership with the operators of the Brú na Bóinne visitor centre.

Anthony Corns, Gary Devlin, Aaron Deevy, Robert Shaw