0000000000308413
AUTHOR
M Cannella
The tree of life in the southern porch of the cathedral of Palermo: survey and geometric analysis
This study focuses one of the most puzzling works of art made in Palermo at the end of the medieval age: the tree of life, a rich geometrical decoration with animal and human figures in the southern porch of the Cathedral of Palermo. Topographic and SfM photogrammetric methods produced a detailed orthophoto of the porch. Images collected during restoration have been rectified and superimposed to the orthophoto. The geometrical analysis of the decorative patterns reveals a complex design and meaningful links between the decoration and the general architectural layout of the porch.
Elementi teorici per il disegno informatico.
IL testo affronta i temi di base del disegno informatico: i sistemi di proiezione parallela e prospettica, le diverse metodologie di modellazione (solida, di superfici e poligonale) e le tecniche di rendering.
Metodi per la ricostruzione virtuale e la visualizzazione di opere d'architettura perdute
Digital technologies for architecture representation have strongly modified uses and rules inherited from a millennial tradition. In the initial development period CAD tools worked as electronic drafting machines and digital drawings were almost similar to hand-made drawings; plans, fronts, sections and the like. In this period perspective and axonometric drawings were rarely executed because architects realized that these drawings had to be substituted by 3D digital models views, but modeling tools were not so familiar to professionals, both for software and hardware limitations. The evolution of architecture digital representation is still in progress, but it is possible to outline a prec…
Multi sensor photogrammetric techniques for the documentation of the ruins of Temple G in Selinunte
In the past two decades UAV have been increasingly used for the survey of wide areas. The chosen case study, the huge heap of ruins of the Temple G in Selinunte, demands a higher accuracy than that usually accepted for wide areas survey; nonetheless, the morphology of the ruins makes laser scanning survey inadequate to the purpose of the analysis and interpretation. The proposed methodology integrates SfM photogrammetry from UAV and action camera’s photos. A test on a specific area has evaluated the accuracy of photogrammetric survey through the comparison with laser scanning data.