About RTI

What is Reflectance Transformation Imaging? Basically it is a way to image fine texture details on objects that are very difficult to capture with one or to photographs. For example fine scratches in multiple directions could require many raking-light images to be taken normally. RTI captures the object’s surface.

single frame from a capture sequence on pisanduba tablet from the Ashmolean museum , Oxford. There is rarely one perfect light direction for some objects, which is where RTI becomes very useful as the viewer controls the light angle.

See the CHI page for a fuller description and try our online demo to see what it looks like (select Lightbulb to change light direction).