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).
This demonstration shows how RTI can create a more lifelike, engaging experience of an object than 2D photography. The sample has a very low-relief surface texture, but manipulating the light source brings the different textures and materials to life. The slightly reflective threads used for the embroidered flowers and yellow stripe are particularly highlighted, while the white-on-white details, which can be almost invisible when lit from some angles, are plainly visible.
A loose fabric sample swatch excerpt from a Victorian dress album compiled by Rose Hobart in the late 19th century. The fabric is a lightweight silk brocade variant, ordered for the production of a fashion cloak, with a design incorporating embroidered floral motifs and yellow accent detail.