This volume is the first of a series of books dedicated to individual areas of Virtual Restoration, which today represents one of the possible ways to know, preserve, safeguard and enhance works of art. Through the examination of numerous case studies, this book deals with the restoration of pictorial and mosaic surfaces and all the topics related to restoration through the use of digital technologies: from the relief to the representation of decorated surfaces, the integration of gaps to virtual iconographic reconstruction up to the use of non-invasive diagnostic analysis. For each individual issue, solutions are compatible with the principles, rules and methods of real restoration, according to the axiom physical restoration to preserve and virtual restoration to enhance: an evolving methodology.