Structure from Motion and Post-processing. The application of the 3D techniques to Rock-art in Valcamonica

Paolo Medici, Giulia Rossi

Abstract


In archaeology the use of 3D reconstruction is widely used for its ease of use, for being cheap and contactless, and, moreover, for the possibilities that the 3D technique offer to the archaeologists during the post-processing of the data. Also in the field of rock-art the use of the three-dimensional reconstructions is growing, in particular with the developing of the technology and the algorithms behind the software of 3D modelling and processing. In the recording of rock engravings the 3D can provide an important aid, first of all saving time and money for having a first sight objective documentation of an area available for all the scholars and interested (such as museum, operators in the valorisation and preservation, and others); furthermore it is useful for the tools (such as shaders, radiance scaling and others, provided by the enhancement software and for the microscale analysis.
In our presentation we would like to show the use of the SfM technique on rock-art in Valcamonica and in particular the post-processing software like Mehslab, etc.. We will present different case of studies with different features, such as filiform (very tiny engravings around or below the millimetre), superimposed figures and other. Each of this case of study will be enhanced with different post-processing software and tools, in order to reach a comparison of these tools and understand which fit better for the different cases.