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Revealing Hidden Heritage
Reflectance Transformation Imaging (RTI) is a technique for imaging objects under varying light conditions. By combining images of an object taken when lit from different angles, RTI makes it possible to discern surface details that are not normally visible to casual inspection. Originally developed as a way to enhance 3D computer graphics, RTI has proven very useful in the analysis of cultural heritage objects with degraded surfaces such as rock art, coins, gravestones, monuments, and paintings.
Led by Ardrossan Castle Heritage Society, the Revealing Hidden Heritage project acquired a set of RTI equipment and trained volunteer investigators in its use. The initial training sessions, delivered by Spectrum Heritage, also aimed at investigating the weathered gravestones of the church graveyard on Castle Hill in Ardrossan and objects held by the North Ayrshire Heritage Centre in Saltcoats.
Led by Ardrossan Castle Heritage Society, the Revealing Hidden Heritage project acquired a set of RTI equipment and trained volunteer investigators in its use. The initial training sessions, delivered by Spectrum Heritage, also aimed at investigating the weathered gravestones of the church graveyard on Castle Hill in Ardrossan and objects held by the North Ayrshire Heritage Centre in Saltcoats.
After the initial training sessions, the equipment will be maintained by the North Ayrshire Council Heritage team and stored at the Heritage Centre in Saltcoats. The RTI equipment will then be available for loan to any groups or individuals carrying out heritage research in the Garnock Connections area.
RTI image of Poe family headstone, North Ayrshire Heritage Centre
Setting up to image fragment of Kilwinning Market Cross
Volunteers learning RTI techniques
Making sure the camera is properly focused
RTI image of Kilwinning Market cross
Learning how to use the RTI kit
Did you know?
Reflectance Transformation Imaging was originally developed to help create better 3D graphics for computer games.
Contact Details
Name: North Ayrshire Heritage & Cultural Services
Email: naheritage@north-ayrshire.gov.uk
Phone: 01294 464174