Page 139 - AC/E Digital Culture Annual Report

Another experiment was carried out as part of this work in Segovia. Using an Ultra Mobile PC, the visual impact of an intervention on the city’s Cervantes theatre was analysed. The cameraon the device and the assistant provided an augmented image of the building’s surroundings with the construction proposals in order to evaluate their impact and possible solutions.Ivapta projectThe University of Seville has developed an augmented reality application for the conser- vation of heritage property which has proven to be valid for studying and diagnosing issues in paintings on canvas. This application is part of a teaching programme, the II Plan Propio de Docencia (2015), and comes under the so-called Ivapta project,74 which stands for Indicadores Virtuales de Alteración en Pintura sobre Tela (Virtual indicators of alterations in painting on canvas).The app75 can be downloaded from digital content platforms and displays a menu featuring various types of issues: colour alteration, warp- ing, previous interventions, aking, loss of paint and tears. When users held their devices over the work in question – in this case an Immaculate Conception attributed to the Sevillian painter Francisco Meneses Osorio – several points appeared indicating abnormalities related to each of the abovementioned issues. They could press the points to activate an audio recording providing precise information, accompanied by a detailed text and images.Although the application has been tested chie y as an educational tool for undergraduates study- ing for a degree in Conservation and Restoration of Cultural Property (González and Prado, 2015),76 it has signi cant potential for sector professionals as a useful assistant for diagnosing and evaluating any cultural property.1.9 Projection mappingMany technologies can be used as part of the diagnostic and intervention process involved in restoring any heritage property, and projection mapping is no exception, as we shall see.Church of Santa Maria Inter Vineas (Italy)The experiment carried out at the School of Architecture and Design in Ascoli Piceno (Italy) was a speci c case of the use of projection mapping to identify the phases of construction of the church of Santa Maria Inter Vineas in that town (Rossi et al., 2014).77 It focused mainly on the interventions carried out on the building throughout its history in order to gain the fullest possible view and knowledge before designing the plan. Using several types of 3D software, such as Autodesk 3ds Max 2010, a number of three-dimensional digital models of the church were produced with di erent textures to contrast the various demolitions, additions or restoration work with the current architecture. It was also necessary to create two mock-upsof the church on a scale of 1:50 representingtwo stages in its construction before and after the year 1950, when major modi cations were made. After aligning the digital models with the projector, a sequence of past interventions on the church was mapped onto the physical model. The overall view provided and the immediacyof the information on its architectural history enabled the students to carry out a more precise diagnosis and glean much deeper knowledge of the building, for which a future restoration plan will be drawn up.1.10 3D Printing3D printing has proven to be one of the most innovative technologies with the greatest potential in the cultural heritage sector and has been rapidly spreading over the past ve years.AC/E DIGITAL CULTURE ANNUAL REPORT 2017139The use of digital technologies in the conservation, analysis and dissemination of cultural heritage