Despite many technological and scientific advances, the methodology of 3D model reconstruction of an archaeological excavation can present some difficulties. One of these is represented by a time factor, which is often linked to economical issues. Time becomes an essential project constraint when there are survey restrictions or limitations in data processing. The temporal limits can lead to an important disjuncture between theoretical approaches and real results that can be obtained in a restricted time. Transferred into practice it means that a resolution-driven time frame approach can be applied only in projects with unlimited resources whereas a real situation often requires the application of a time-frame driven resolution methodology. A key step is represented by the initial survey planning in which the determined areas of study directly affect the acquisition method, instruments utilized in the project, data processing and, in general, the amount of time necessary to complete the whole modeling project. The realistic evaluation of these relevant factors, once determined, is essential in order to obtain the best results of the scan in a particular, limited amount of time. The case study presented in this paper is the "Villa delle Vignacce" excavation, a 2nd century AD structure in the area now called the "Parco degli Acquedotti" investigated by the American Institute for Roman Culture. The necessity to rapidly close this excavation project area and a limited budget required a particular compressed 3D acquisition and processing procedure, so a different 3D survey and modelling approach was applied for the creation of a 3D model of a big portion of this case study. The aim of the paper is to suggest a different planning approach for 3D laser scanner acquisition and data processing in order to optimize time and costs and reach a good compromise between quality and quantity factors, obtaining the best model resolution compliant with a pre-assigned time-frame.
The effects of time constraint on 3D acquisition and data processing: the case of “Villa delle Vignacce”
RUSSO, MICHELE;
2009-01-01
Abstract
Despite many technological and scientific advances, the methodology of 3D model reconstruction of an archaeological excavation can present some difficulties. One of these is represented by a time factor, which is often linked to economical issues. Time becomes an essential project constraint when there are survey restrictions or limitations in data processing. The temporal limits can lead to an important disjuncture between theoretical approaches and real results that can be obtained in a restricted time. Transferred into practice it means that a resolution-driven time frame approach can be applied only in projects with unlimited resources whereas a real situation often requires the application of a time-frame driven resolution methodology. A key step is represented by the initial survey planning in which the determined areas of study directly affect the acquisition method, instruments utilized in the project, data processing and, in general, the amount of time necessary to complete the whole modeling project. The realistic evaluation of these relevant factors, once determined, is essential in order to obtain the best results of the scan in a particular, limited amount of time. The case study presented in this paper is the "Villa delle Vignacce" excavation, a 2nd century AD structure in the area now called the "Parco degli Acquedotti" investigated by the American Institute for Roman Culture. The necessity to rapidly close this excavation project area and a limited budget required a particular compressed 3D acquisition and processing procedure, so a different 3D survey and modelling approach was applied for the creation of a 3D model of a big portion of this case study. The aim of the paper is to suggest a different planning approach for 3D laser scanner acquisition and data processing in order to optimize time and costs and reach a good compromise between quality and quantity factors, obtaining the best model resolution compliant with a pre-assigned time-frame.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
