Synthetic Analysis of Geoinformatics Technologies for Preservation of Cultural Heritage, Methodological Approach

Abstract Currently in Transylvania there are over 600 castles, considered monuments belonging to the world or national heritage. Some of them have disappeared, some are in an advanced degradation, the vast majority being in different stages of degradation, but recoverable, through very expensive investments. The first condition for them to start a program of recovery and put them again in the tourist and cultural circuit is to know exactly the state in which they are, to evaluate the costs. The development of geomatics technologies now allows for the high fidelity assessment of this aspect. These included Global Navigation Satellite System (GNSS) - Total Stations + Levels precision, terrestrial and aerial photogrammetry, laser scanners with fixed stations, for each presenting technical data and products analyzed sequentially and corroborated-complementary. The purpose of the entire action was to establish a Workflow as dedicated as possible to the requests of the specialists involved in such projects, architects, builders, restorers, historians, cultural people, etc. The paper can highlight a model of good practices in this field, the researches continuing, by consulting the beneficiaries of products from the range offered through these activities.