For clay tablets 3D scanning is too imprecise and too expensive (in terms of labor, equipment and time). RTI (Reflectance Transformation Imaging) [1,2] is a mu

For clay tablets 3D scanning is too imprecise and too expensive (in terms of labor, equipment and time). RTI (Reflectance Transformation Imaging) [1,2] is a much better alternative to these "flattish" artifacts. All you need is a decent camera, a flashlight and a small piece of freely available software. The result is an extremely high-res 2.5D scan of the surface of the object. Here is a (thumbnail-sized) example of an RTI'd Greek wax seal: http://cceh.uni-koeln.de/wp-content/uploads/2019/04/RTIgif_xs.gif http://cceh.uni-koeln.de/wp-content/uploads/2019/04/RTIgif_x... (from [3,4]). [1] https://en.wikipedia.org/wiki/Polynomial_texture_mapping https://en.wikipedia.org/wiki/Polynomial_texture_mapping [2] http://culturalheritageimaging.org/Technologies/RTI/index.html http://culturalheritageimaging.org/Technologies/RTI/index.ht... [3] http://cceh.uni-koeln.de/2019/04/26/rti-dome-am-cceh-erster-testlauf-erfolgreich-absolviert/ http://cceh.uni-koeln.de/2019/04/26/rti-dome-am-cceh-erster-... [4] http://cceh.uni-koeln.de/RTIBlogpostFiles/web-image/ http://cceh.uni-koeln.de/RTIBlogpostFiles/web-image/