Proceedings PaperLarge scale stereophotogrammetric survey and computer data processing on particular works of art
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Before the restoration of works of art we need to execute metric, qualitative and storic researches to acquire a deep knowledge of the object on which the opera- tion will be executed. We intend to expound and explain. the problems concerning metric surveys executed with the stereophotogrammetric method on particular "movable" works of art. These problems include: the acquisition of control points with the Wild-Leitz MiniRMS2000 system, the selection and definition of the essential lines of the stereoscopic mo- del, the transfer of acquired data to a CAD system, the processing to these data for the creation of thematic drawings or parallel views or for the separation of the object in parts, etc. We will produce surveys and processing of a painting on wood of the Maestro di S. Francesco (XIII century, m 4.90 x 3.54 x 0.15) and a polyptych of S.Antonio on a board and a frame also on wood painted by Piero della Francesca (XV century, m 4.10 x 2.00 x 0.12). Both of them are of the Soprintendenza ai Beni Architettonici Artistici Ambientali e Storici dell'Umbria - National Gallery of Perugia. We will also produce parts of a painted glass window of the Orvieto Cathedral apse.