A simple method for artworks monitoring by simultaneous speckle interferometry (ESPI) and speckle photography

In this paper, a method for artworks monitoring is proposed, able to perform simultaneously speckle interferometry and speckle photography, thus the system can map both out-of-plane and in-plane displacements. The aim is to keep it as simple as possible to increase its possibilities to be routinely used in restoration laboratories. Though simple, the proposed method is tailored to some specific needs of artwork diagnostics.