Reverse Engineering techniques for statues: fragment recomposition and posture evaluation of reconstructed shapes.
Interventions for statues restoration may last long periods, involving several activities from material and structural analysis to reconstruction of fragments and set-up of museum exhibitions. Concerning reconstruction of fragments, with the passing of the years some maintenance o new set-up may occur due to different kind of instances. They can be related to new findings, new reconstruction criteria (e.g. showing the unknown parts with different materials); problems of the methods applied for reconstructions (e.g. shrinkage of the resin); accidents or disasters (e.g. earthquake). Reverse engineering techniques and CAD modeling may help restores for a better understanding of the problems and related results, while automatic feature recognition and image analysis may support fast evaluation of fragments edges. In this research we aim to analyze and implement routines for CAD that are devoted to recompose fragments acquired by a shape scanner. In addition, considering cases which have image proofs of previous integrity and alignment (e.g. recent damage due to accidents or misalignments due to material deterioration), the proposed alignment found by CAD will be compared and improved through a quantitative comparison of the image proof, through a procedure based on image registration.