The main purpose of the paper is the discussion of techniques and/or methodologies, which are susceptible of further developments and may be chosen for more extensive use in the framework of modern strategies aimed at the protection of cultural heritage as a whole. Again in the author’s opinion, a wide range of applications at a reasonable cost is a crucial (often forgotten) issue for any official institution involved in conservation problems. Indeed, there is a rather common trend towards very expensive (and sometime useless) plans for the protection of a few monuments, while a large number of historical buildings is eventually ignored owing to lack of funds.
