scAnt consists of a scanner and a Graphical User Interface, and enables the automated generation of Extended Depth Of Field images from multiple perspectives. Exemplary results demonstrate our methods on real objects, ranging from small and medium-sized objects such as clay cones from the Ancient Orient and figural friezes of Greek vessels to extremely large objects such as the remains of a cylindrical tower of Heidelberg Castle. We present scAnt, an open-source platform for the creation of digital 3D models of arthropods and small objects. Our implementation generates true-to-scale images from triangular meshes. Instead of creating 2D images for documentation purposes by manual drawing or photographic methods, we propose a method based on digitally colored surface models that are acquired by 3D scanners, thereby including color information. We then extend our method to approximately spherical objects by fitting a sphere on the surface of the object and applying a map projection, namely the equirectangular projection known from cartography. Rotationally symmetric objects commonly occur at archæological finds. In order to minimize distortions, we introduce a simple quality measure based on distances of points to a fitted cone. Our method can handle curved vessel profiles by dividing the surface into multiple segments and approximating each segment with a cone frustum that serves as an auxiliary surface. We then transform these highly-detailed meshes using simple geometrical objects such as cones and spheres and unwrap the objects onto a plane.
In this paper is presented the whole pipeline from the creation of a high resolution 3D model of an ‘Acquasantiera’ to its Remote Rendering on the world wide web without any loss of details or accuracy.Rotationally symmetric objects commonly occur at archæological finds. Many researchers, however, do not have access to scanning facilities or dense polygonal models. Model available for download in Autodesk FBX format. This diffusion among cultural heritage institutions gives the scientific society a wide range of 3D hardware capturing devices and software solutions. In recent years, the number of range scanners has been growing rapidly and surface reconstruction algorithms have been developing by the open-source community.
Moreover the resulting 3D models can be used for digital documentation as well as to perform different analysis such as measurements, conservation monitoring, feature extractions and possibly virtual restoration. Recent improvements in 3D laser scanning technology allow to reliably and accurately digitize the external shape of many physical objects with high definition and accuracy.
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