Abstract
Domes still represents a prickly subject, large dimensions coupled with a limited accessibility making their study difficult and time-consuming. Although throughout history this problem has been tackled in different ways, relevant methodological and operational issues have until now limited the success of these efforts. Digital technologies have radically changed this scenario. 3D active and passive capturing systems currently allow for a dense and accurate surveying while modelling software provides powerful tools to build virtual counterparts of surfaces and to investigate their geometric properties. The aim of this paper is to present three different projects developed by a research group in the Department of History, Representation and Restoration of Architecture—Sapienza University of Rome. Based on their results, the group has set up and tested a protocol that can guide users from acquisition through modelling and, finally, to the reading of the geometric properties of domes.
Highlights
The study of domes still represents a thorny subject
Throughout history this problem has been tackled in different ways (Letaroully 1840–55; Emerson and Van Nice 1943; Dorffner et al 2000; Hidaka and Satō 2004), relevant methodological and operational issues have until now limited the success of these efforts
Some “intrinsic” constraints have always limited the success of these tasks: on one hand, the surveying campaigns used to produce small and inaccurate datasets; on the other, the tools for the investigation of surfaces were rich from a theoretical standpoint but very poor from an operational one
Summary
The study of domes still represents a thorny subject. large dimensions coupled with a limited accessibility make the study of their shapes and geometry a traditionally difficult task (Rondelet 1802–17; Leroy 1845). Bianchini of surfaces (Bianchini and Russo 2018); on the other, modelling software provides powerful tools to build virtual counterparts (3D models) of these surfaces as well as to investigate their geometric properties (Migliari 2008)
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