Giuseppina Vacca

Giuseppina Vacca
Università degli studi di Cagliari | UNICA · Department of Civil, Environmental and Architectural Engineering

Phd Topography and cartography

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34
Publications
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295
Citations

Publications

Publications (34)
Article
Full-text available
The study presented aims a practical contribution to the use of the Terrestrial Laser Scanner and the Close Range Photogrammetry geomatic techniques and to their integration for the knowledge and development of the historical-architectural heritage, both in the step of planning a restorative conservation project, and in the subsequent step of the r...
Preprint
Full-text available
The possibility to have results very quickly after, or even during, the collection of electromagnetic data would be important, not only for quality check purposes, but also for adjusting the location of the proposed flight lines during an airborne time-domain acquisition. This kind of readiness could have a large impact in terms of optimization of...
Article
Full-text available
The possibility to have results very quickly after, or even during, the collection of electromagnetic data would be important, not only for quality check purposes, but also for adjusting the location of the proposed flight lines during an airborne time-domain acquisition. This kind of readiness could have a large impact in terms of optimization of...
Article
Full-text available
In the photogrammetric process of the 3D reconstruction of an object or a building, multi-image orientation is one of the most important tasks that often include simultaneous camera calibration. The accuracy of image orientation and camera calibration significantly affects the quality and accuracy of all subsequent photogrammetric processes, such a...
Article
Full-text available
Dense point clouds acquired from Terrestrial Laser Scanners (TLS) have proved to be effective for structural deformation assessment. In the last decade, many researchers have defined methodology and workflow in order to compare different point clouds, with respect to each other or to a known model, assessing the potentialities and limits of this te...
Article
The low accessibility of information regarding the design and construction phases and the current state of the buildings is the main cause of inefficient actions on existing buildings. The lack of ‘as built’ documentation and the complex task of detecting their current status in terms of use and maintenance cause deep difficulties in planning appro...
Article
Full-text available
Between 1839 and 1849, the architect Gaetano Cima built a very interesting neoclassical church with a central plan, covered by a dome about 20 meters in diameter in Guasila (in the province of Cagliari, Italy). Already during the construction, Cima highlighted a series of problems related to the quality of the materials used, the technical skills o...
Article
Full-text available
The ruined convent of Santa Chiara, a nodal urban space connecting three historic quarters of Cagliari, has had a key role in the urban life of the city since medieval age. After the suppression of the mendicant orders in 1864 and the violent bombings during the World War II, this monument become a neglected and ruined shell of masonry with no roof...
Article
Full-text available
The survey phase is an essential prerequisite for effective management and improvement of existing buildings. The low accessibility of information regarding the design and construction phases and the current state of the buildings, are the main causes of inefficient actions on existing buildings. The lack of “As Built” documentation (building compo...
Article
Full-text available
The growing interest in recent years in Unmanned Aerial Vehicles (UAVs) by the scientific community, software developers, and geomatics professionals, has led these systems to be used more and more widely, in different fields of engineering and architecture. This is thanks, above all, to their flexibility of use and low cost compared to traditional...
Article
Full-text available
As is well known, Italy's very consistent buildings stock has become the major field for real estate investments and for the related projects and actions. It is a heritage that is often barely known and extremely complex, whose management has until now been addressed in a rather casual and uninformed manner, with unsatisfactory and sometimes disast...
Article
Full-text available
The paper presents a spatial information system (SIS) developed in the research project, “Tecniche murarie tradizionali: conoscenza per la conservazione ed il miglioramento prestazionale” (Traditional building techniques: from knowledge to conservation and performance improvement), with the aim of archiving and managing the data derived from the pr...
Article
Full-text available
This paper focuses on the processing and study of 3D models obtained from images captured by an unmanned aerial vehicle (UAV). In particular, we wanted to study the accuracy gains achieved in the surveying and the measurement, such as height, area, and volume, of the dimensions of the buildings in the 3D models obtained with both nadir and oblique...
Article
Full-text available
The presented work is part of the research project, titled "Tecniche murarie tradizionali: conoscenza per la conservazione ed il miglioramento prestazionale" (Traditional building techniques: from knowledge to conservation and performance improvement). This research project has the purpose of studying the building techniques of the 13th–18th centur...
Article
Full-text available
The presented work is part of the research project, titled "Tecniche murarie tradizionali: conoscenza per la conservazione ed il miglioramento prestazionale" (Traditional building techniques: from knowledge to conservation and performance improvement), with the purpose of studying the building techniques of the 13th–18th centuries in the Sardinia R...
Article
Full-text available
The paper presents the use of the terrestrial laser scanner for the study and the assessment of damaged buildings. The terrestrial laser scanner provides the ability to detect the geometric 3D model of a building without any physical contact with the structure. Knowledge of the 3D model will give the opportunity to study the deformation and quantif...
Article
Full-text available
scanner provides the ability to detect the geometric 3D model of a building without any physical contact with the structure. Knowledge of the 3D model will give the opportunity to study the deformation and quantify the damages. Three case studies are presented relating to damaged and/or unsafe buildings: Sivillier Castle (Villasor - Sardinia- Ita...
Conference Paper
Full-text available
The paper presents the use of the terrestrial laser scanner for the study and and the assessment of damaged buildings. The terrestrial laser scanner provides the ability to detect the geometric 3D model of a building without any physical contact with the structure. Knowledge of the 3D model will give the opportunity to study the deformation and qua...
Article
Full-text available
The use of GIS as a tool for archival, analysis and representation of geographic information has become significantly popular in many scientific fields that are directly concerned with the "territory" as their object of study. The field of application of GIS, however, has expanded also in other areas, such as those related to humanities and archite...
Chapter
Full-text available
The use of GIS as a tool to archive, analysis and represent geographical information is now common in many scientific fields that have “territory” as an object of study. The scope of these instruments, however, has expanded in other areas, such as those relating to humanities and history, for which territory is studied in an “indirect” way because...
Article
Full-text available
The Franciscan monastery, situated in the historic center of Cagliari (Sardinia), was founded in the thirteenth century, and transformed during the later centuries, up to the present day. The complexity of the case and the lack of objective data about its history has led us to carry out an interdisciplinary inquiry, in order to achieve a better kno...
Article
Full-text available
The Franciscan monastery, situated in the historic center of Cagliari (Sardinia), was founded in the thirteenth century, and transformed during the later centuries, up to the present day. The complexity of the case and the lack of objective data about its history has led us to carry out an interdisciplinary inquiry, in order to achieve a better kno...
Article
Full-text available
The field of Cultural Heritage has inspired, in the course of last few years, an interest more and more important on behalf of scientific community that deals to survey. The idea that knowledge of a site doesn't apply only to its history but must necessarily include its characteristics of position, shape and geometry, is gathering pace. In Geomatic...
Article
Location-based services (LBS) provide information and data to the user based on geographical position. These services are usually based on a communication network and one or more positioning technologies, combined with geographical information systems which collect the information and present it to the end user. An LBS service is implemented within...
Article
Full-text available
Location Based Services (LBS) provide information and data to the user based on geographical position. These services are usually based on a communications network and one or more positioning technologies, combined with geographical information systems (GIS) which collect the information and present it to the end user. An LBS service is implemented...
Article
Full-text available
The paper shows the results achieved by the research group of the University of Cagliari in the field mapping automatic generalization. Particularly the work concerned this objectives: - study of a model for the generalization of geographical data from 1:10.000 to 1:25.000, 1:50.000, 1:100.000 and 1:250.000; - development of the model for automat...
Article
Full-text available
Concerning geographic data representation, what a user need is specific tools for the representation and evaluation of the data on which the decision process relies. In cartographic applications, users need to deal with maps of the same geographic region at different levels of abstractions. Usually it’s used to maintain one database per level detai...
Article
Full-text available
Today, differential GPS techniques allow common GPS receivers to achieve the precision levels required for mapping purposes. The development of systems for mobile Internet access (mainly GPRS) provides a fast and reliable method for feeding differential corrections to a GPS receiver in any area covered by a cell telephone network. With the increase...
Conference Paper
Full-text available
The choice of moving the competence about Land Management to Local Government, has forced the Local Administrations to improve new multiscale spatial territorial analysis tools for development of brand new land models. In this paper we deal with the problem of map generalization, beginning from a generalization workflow by improving specific Visual...
Article
Full-text available
In this paper the Topography Section of the University of Cagliari (Italy) presents the results of the research carried out on the Location Based Services. These are services which use the knowledge of a mobile device's position (e. g. a mobile phone or PDA) in order to send to the user information and news.The research had the purpose of investiga...
Article
In order to assess the influence of distortion of objective lens on digital photocameras and videocameras a series of experiments, using a digital photocamera by Nikon, a videocamera by Samsung and a webcam by Creative have been performed with the aim to test the possibility to enhance camera images by means of resampling tech- niques. For this pur...

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