Dear Colleagues,
I am happy to announce that I have interactive Reflectance Transformation Imaging (RTI) files of the 8th-century St Chad Gospels available for viewing on the Web: https://lichfield.as.uky.edu . This past summer, I used RTI (originally known as Polynomial Texture Mapping, PTM) to capture dry-point glosses and the state of pigments in the 8th-century St Chad Gospels. RTI proved wonderfully successful, even capturing dry-point glosses that had previously gone unnoticed. These files are viewable in a regular browser and allow viewers to control the angle of light and adjust a specular enhanced view of surface details. I also have a short video about RTI and the Chad Gospels' dry-point glosses on the website, but it is also viewable directly on YouTube: http://youtu.be/SEr0rO3UHjs .
All best, Bill
-- Manuscripts of Lichfield Cathedral https://lichfield.as.uky.edu
Bill Endres University of Kentucky Division of Writing, Rhetoric & Digital Studies Lexington, KY 40506
859-257-8337