The term describes a set of procedures aimed at converting a mesh model from active or passive sensors into a NURBS made of a continuous series of patches or a solid model. The process starts with a segmentation phase, namely the detection of primary and secondary surfaces, then followed by the detection of geometric features (curves) and relevant sections of the model. Curves are used for the construction of a CAD model that will be compared with the scanned data.
Published in Chapter:
3D Digital Models for Scientific Purpose: Between Archaeological Heritage and Reverse Modelling
Luca Cipriani (Alma Mater Studiorum Università di Bologna, Italy), Filippo Fantini (Alma Mater Studiorum Università di Bologna, Italy), and Silvia Bertacchi (Alma Mater Studiorum Università di Bologna, Italy)
Copyright: © 2017
|Pages: 31
DOI: 10.4018/978-1-5225-0675-1.ch010
Abstract
Reality-based digital models assist in the achievement of accurate analysis of historical buildings as well as archaeological sites and, more in general, of monuments featuring more or less complex forms. Their reliability is particularly useful when the state of conservation of masonries and vaults has been altered due to deterioration phenomena or as a consequence of incorrect interventions. In these cases, a highly detailed “digital copy” of the ancient constructions, if correctly observed via reverse modelling applications, can provide useful indications for an accurate and scientifically-based digital reconstruction. The Octagonal Hall of Small Baths at Hadrian's Villa, with its daring design of vaults and audacious building techniques, was chosen to test several interpretation techniques based on the customization of contemporary reverse modelling procedures integrated with standard protocols of design analysis and archaeological investigation.