To move the light position in the interactive RTI, make sure the lightbulb icon in the bottom right corner is highlighted rather than dark then click and drag across the viewer.
To pan around the image, turn the lightbulb icon off, and click and drag across the viewer.
Use the layers icon to enable enhanced views of the RTI, including diffuse and specular (mathematical enhancements that remove colour and increase contrast), and normals (a false-coloured static view of the surface profile).
The engraved patterns on this bone fragment are obvious in real life, but challenging to capture using traditional 2D photography. Even in the natural colour RTI view, the even colour of the bone surface makes the incisions difficult to see. Viewing it using the specular enhancement layer helps to makes the incisions more visible.
This is part of a teaching collection used by the University Department of Archaeology and History. The RTI was created as part of a joint project between the Department and the Digital Humanities Lab to digitise artefacts from these collections to enable students to study them more easily.