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Greetings! Our article "Two new ways of documenting miniature incisions using a combination of Image-Based Modelling and Reflectance Transformation Imaging" is available in Open Access at https://www.mdpi.com/720360. Best regards, Dag-Øyvind Solem and Erich Nau, Norwegian Institute of Cultural Heritage Research Abstract: Digital 3D documentation methods such as Image-Based Modelling (IBM) and laser scanning have become increasingly popular for the recording of entire archaeological sites and landscapes, excavations and single finds during the last decade. However, they have not been applied in any significant degree to miniature incisions such as graffiti. In the same period, Reflectance Transformation Imaging (RTI) has become one of the most popular methods used to record and visualize this kind of heritage, though it lacks the benefits of 3D documentation. The aim of this paper is to introduce two new ways of combining IBM and RTI, and to assess these different techniques in relation to factors such as usability, time-efficiency, cost-efficiency and accuracy. A secondary aim is to examine the influence of two different 3D processing software packages on these factors: the widely used MetaShape (MS) and a more expensive option, RealityCapture (RC). The article shows that there is currently no recording technique that is optimal regarding all four aforementioned factors, and the way to record and produce results must be chosen based on a prioritization of these. However, we argue that the techniques combining RTI and IBM might be the overall best ways to record miniature incisions. One of these combinations is time-efficient and relatively cost-efficient, and the results have high usability even though the 3D models generated have low accuracy. The other combination has low time- and cost-efficiency but generates the most detailed 3D models of the techniques tested. In addition to cost-efficiency, the main difference between the 3D software packages tested is that RC is much faster than MS. The accuracy assessment remains inconclusive; while RC generally produces more detailed 3D models than MS, there are also areas of these models where RC creates more noise than MS.
First, I apologize if this is not posted in the right place. I have been doing a lot of RTI work focusing on ancient inscriptions and everyone with whom I work--though impressed with the results of RTI--wants to be able to create a transcription that is layered on the RTI viewer. For them, it wasn't enough to take a snap shot in photoshop to work off of; they wanted to be able to create a transcription while manipulating the viewer. At last, I have found something that doesn't solve all problems, but it is a good start until a RTI viewer-Photoshop software comes out. The name of it is Ink2Go. Essentially, it lets you draw on your screen and switch back to interacting with your computer programs quite seamlessly. One can save snap shots and even record the annotations (I haven't found a use for the latter, but perhaps someone will). I have posted two sample pictures of what it can do (NB: it is an imperfect transcription). This may not be of use in many fields (perhaps not in any other fields) but it is definitely great for epigraphy. It is not a free download, but I have found that it is worth the money. Please place in a different folder/topic or remove completely if not fitting with the forum. Ben Altshuler