[Show abstract][Hide abstract] ABSTRACT: Research institutions, funding bodies and researchers themselves are becoming increasingly aware of the need to manage imaging and 3D data. At an institutional level data management policies are playing an increasingly significant role laying down plans for the provision of infrastructure, policy and guidance. Drawing upon the preliminary results of the University of Southampton's JISC funded DataPool project, this paper will gauge the extent to which institutional policy development might be supplemented or even enhanced by an increased awareness of localised responses to the challenges of imaging and 3D data management. The paper will review approaches to data management that have been adopted by individuals and research groups and will propose that in many cases these developments might be pivotal in defining the form of institutional data management policy should take.
[Show abstract][Hide abstract] ABSTRACT: Polynomial Texture Mapping (Malzbender et al., 2000, 2001) uses multiple images to capture the reflectance properties of a given surface. Multiple captures may be combined in order to produce interactive, relit records of the material sampled. Cultural heritage examples of the technology include work on cuneiform tablets, numismatic archives and lithic artefacts. This paper introduces the PTM data capture and processing technologies available for artefact recording, and the perceived archaeological potential of additional methods to supplement the standard PTM datasets. Case studies in the use of PTM include ongoing work on stylus writing tablets, medieval wood, excavated material from the site of Portus (www.portusproject.org) and medieval ceramics. Each of these presents particular challenge for recording, analysis and presentation. The paper also identifies the synergies between PTM, related imaging technologies, photogrammetry and non-contact digitisation through case studies on Libyan rock art and on a Roman polychrome statue. It identifies ongoing challenges and proposed future developments.
[Show abstract][Hide abstract] ABSTRACT: Reflectance Transformation Imaging (RTI) is a technology that uses conventional digital photographs to derive detailed surface shape information (Figure 1). It is a digital, interactive version of the raking light photography commonly used in finds photography and (with the sun) on site to represent subtle changes in surface morphology. The University of Southampton is currently leading a project in collaboration with Oxford University funded by the AHRC further to develop and promote the RTI technology. We recently provided a demonstration of the available tools at the IfA conference on April 11th 2011.
[Show abstract][Hide abstract] ABSTRACT: This paper describes the design and implementation of a methodology for the visualisation and hypothetical virtual reconstruction of Roman polychrome statuary for research purposes. The methodology is intended as an attempt to move beyond visualisations which are simply believable towards a more physically accurate approach. Accurate representations of polychrome statuary have great potential utility both as a means of illustrating existing interpretations and as a means of testing and revising developing hypotheses. The goal of this methodology is to propose a pipeline which incorporates a high degree of physical accuracy whilst also being practically applicable in a conventional archaeological research setting. The methodology is designed to allow the accurate visualisation of surviving objects and colourants as well as providing reliable methods for the hypothetical reconstruction of elements which no longer survive. The process proposed here is intended to limit the need for specialist recording equipment, utilising existing data and those data which can be collected using widely available technology. It is at present being implemented as part of the 'Statues in Context' project at Herculaneum and will be demonstrated here using the case study of a small area of the head of a painted female statue discovered at Herculaneum in 2006.
VAST 2011: The 12th International Symposium on Virtual Reality, Archaeology and Intelligent Cultural Heritage, Prato, Italy, 2011. Proceedings; 01/2011
[Show abstract][Hide abstract] ABSTRACT: This paper describes an ongoing project to digitally record, reconstruct and repaint a 2000-year-old painted Roman statue from Herculaneum, Italy. The paper considers the archaeological potential for extremely detailed laser scanning and digital recreation of Roman statuary, and visualisation within a physically accurate context. It focuses on the archaeological significance of the emerging technologies employed and their potential to illuminate our understanding of concepts such as Roman aesthetics, the impact of spatial context on perception of statues, and the interpretation of surviving unpainted Roman statues from elsewhere in the Roman world.
[Show abstract][Hide abstract] ABSTRACT: High-fidelity computer graphics offer the possibility for archaeologists to put excavated cultural heritage artefacts virtually back into their original setting and illumination conditions. This enables hypotheses about the perception of objects and their environments to be investigated in a safe and controlled manner. This paper presents a case study of the pipeline for the acquisition, modelling, rapid prototyping and virtual relighting of a Roman statue head preserved at Herculaneum in Italy. The statue head was excavated in 2006, after having been buried during the eruption of Mount Vesuvius in AD79.
Proceedings of the 6th International Conference on Computer Graphics, Virtual Reality, Visualisation and Interaction in Africa, Afrigraph 2009, Pretoria, South Africa, February 4-6, 2009; 01/2009
[Show abstract][Hide abstract] ABSTRACT: This paper introduces the Portus Project, an inter-disciplinary collaborative fieldwork project focussed on the ancient port of Rome. It demonstrates the use that is being made of a plaster model of the port produced by Italo Gismondi in 1937, initially as a means for focussing re-evaluations of the various illustrative and other data available relating to the port's topography, and then as a source for background and comparative digital geometric data within the project's work to remodel the entire site. The Portus Project employs three-dimensional computer graphics throughout the data gathering, analysis, modelling and representation phases and the paper considers the role that Gismondi's model is playing in the development and evaluation of such a process.