Digital Image Access & Retrieval

The 33th Annual Clinic on Library Applications of Data Processing, held at the University of Illinois at Urbana-Champaign in March of 1996, addressed the theme of "Digital Image Access & Retrieval." The papers from this conference cover a wide range of topics concerning digital imaging technology for visual resource collections. Papers covered three general areas: (1) systems, planning, and implementation; (2) automatic and semi-automatic indexing; and (3) preservation with the bulk of the conference focusing on indexing and retrieval.published or submitted for publicatio

Navigating virtual heritage applications for historic cities in the Middle East

This paper discusses conceptual and practical framework for the development of virtual heritage platforms as a research, educational and engagement tool that brings historic spaces and buildings back to the recognition of the public eye of the ordinary user. It not only reproduces historical scenes through physical modelling of archaeological sites or data, but, more importantly, through serial narratives where life is explored and practiced in motion, and where cultural-feed brings meaning, experiences and understanding to the socio-cultural context. The paper first introduces a brief and summary database of case studies of examples of virtual heritage platforms and outputs that are suitable to different purposes and audiences. It, then, looks at the context and production of VH in Egypt, as an example of Middle Eastern cities with vast heritage sites and advanced technological provisions. It reports on the process and findings of an AHRC-funded project, Virtual Heritage Cairo, that aimed to investigate difficulties, technological and skill gaps amongst stakeholders and local start-ups that would otherwise enable VH in Egypt to become regional power

Virtual platforms for heritage preservation in the Middle East: the case of medieval Cairo

Much of the effort in VH is directed towards accurate representation of historic structures, objects or artefacts. There is little attention is paid, however, to the human aspects of city life, the intangible heritage to which people can actually relate. Digital models of historic buildings and spaces only give a sense of precision. Yet, rituals, human attitude and cultural traditions remained a gap in current research and advanced technology in heritage visualization. Virtual Heritage Environments (VHE) suffer from the lack of ‘thematic interactivity’ due to the limited cultural content and engaging modules largely used in photorealistic video gaming systems. In order to approach virtual fidelity and accurate reproduction of historic environments, this paper reports on a research process to investigate and incorporate a Cultural-feed into digital platforms of Virtual Heritage. In doing so, the paper focuses on the Middle East in general and Medieval Cairo in particular. It discusses conceptual and practical framework for the development of virtual heritage platforms as a research, educational and engagement tool that brings historic spaces and buildings back to the recognition of the public eye of the ordinary user. It analyses current practices and projects of the virtual heritage technologies and reports on field work that took place in Islamic Cairo with Five Start-Up entrepreneurs

Reliving past architecture: virtual heritage and the reproduction of history through creative modes of heritage visualisation

Virtual heritage is a modern technological application that aims to transfer the experience of historic buildings, urban spaces and cities into an engaging experience of real-life quality for the ordinary people. Computer-simulated environments can simulate physical presence in places in the real world offering digital display of lost heritage that conveys inherent values in the education process for students in both pre-university as well as graduate education. For architecture and archaeological students, in particular, it virtually transfers them to another world where they engage with architectonics and quality of architecture. For conservators, historians and archaeologists, it helps develop a rich library and digital archive of details, information and data necessary in restoring historical sites, as well as heritage preservation where the 3D virtual models contain accurate data and help for restoration. This paper reports on recently completed research project on the development of virtual heritage platforms for medieval culture. It uncovers a conceptual framework for the development of virtual heritage platforms as a research, educational and engagement tool that brings historic spaces and buildings back to the recognition of the public eye of the ordinary user. It not only reproduces historical scenes through physical modelling of archaeological sites or data, but, more importantly, through serial narratives where life is explored and practised in motion, and where cultural-feed brings meaning, experiences and understanding to the socio-cultural context. The paper introduces a brief analysis of virtual heritage platforms that offer a variety of methods, techniques, contexts, and outputs that are suitable to different purposes and audiences. It offers a brief conclusion on how virtual heritage offer unique and unprecedented insights into historic architecture that would be otherwise invisible or unimaginable

PRESERVATION FOR FUTURE GENERATIONS: DIGITAL TECHNOLOGIES, DIGITALIZATION, AND EXPERIMENTS WITH CONSUMERS AS PRODUCERS OF INDUSTRIAL HERITAGE DOCUMENTATION

As digital documentation and recording technologies have evolved, so has the perception that they are segregated and intended primarily for use in either engineering/scientific or amateur/consumer applications. In contrast to this notion, the three-dimensionality afforded by these technologies differs only when considering them in the order of priorities; laser scanners and related image acquisition technologies document and visualize while inversely, consumer cameras visualize and document. This broad field of digital acquisition technologies has evolved into a heterogeneity of tools that all capture aspects of the physical world with a line drawn between them becoming blurred. Within this evolution, these tools are becoming less expensive, easier to use, and depending upon the application, can be operated successfully by individuals having modest or semi-professional skills. The proliferation of digital documentation technologies, the ease of their use, and the ability to share visual data on the internet allow us to examine the inclusion of digital documentation into the preservation management of historic industrial resource, pushing heritage to the digitalized culture

DIGITAL REPLICAS OF BRITISH MUSEUM ARTEFACTS

The digitisation of museum exhibits has played an essential role in geomatics research for generating digital replicas, as it offers the chance to address rather challenging issues. The use of different sensors, ranging from active to passive, and also structured light scanners or hybrid solutions, the various destinations and purposes of the final results combined with the extreme variety of possible objects have made it a field of investigation highly inquired in the literature.The present study aims to analyse and discuss a digitalisation workflow applied to four Sumerian civilisation masterpieces preserved in the British Museum. The dense and accurate 3D point clouds derived from a specimen of Articulated Arm Coordinate Measuring Machines in collaboration with Faro technologies have twofold roles: ground truth and geometric reference of the final digital replicas. Digital photogrammetry is employed to enrich the models with the relevant radiometric component. The significant contribution results, exploiting co-registration strategies, offer careful guidance of a photogrammetric protocol created in a highly controlled environment combined with skilful expedients and devices. The proposed approach enables the acquisition of high-quality and radiometrically balanced images and improves the possibility of automating the masking procedure before the photogrammetric processing.</p

VIRTUAL ACCESS TO HERITAGE THROUGH SCIENTIFIC DRAWING, SEMANTIC MODELS AND VR-EXPERIENCE OF THE STRONGHOLD OF ARQUATA DEL TRONTO AFTER THE EARTHQUAKE

Interactive representation has proven to be an effective tool in various disciplines related to Digital Cultural Heritage (DCH). This study proposes a research method that uses interactive representation to share complex scenarios like the Stronghold of Arquata del Tronto, facilitating novel forms of heritage dissemination. The scan-to-BIM process made it possible to digitise complex structural elements damaged by the 2016 earthquake. The investigation of the complexity paradigm improved the reliability of the semantic model that supports the preservation process. Interoperability and accessibility paradigms were explored to create a more comprehensive and accurate understanding of the built heritage. A web-VR platform was developed to enhance user interaction and simplify virtual environment exploration without using complex hardware (VR headset and controllers), making it possible to experience VR in the browser

An investigation into 3D printing of osteological remains: the metrology and ethics of virtual anthropology

Three-dimensional (3D) printed human remains are being utilised in courtroom demonstrations of evidence within the UK criminal justice system. This presents a potential issue given that the use of 3D replicas has not yet been empirically tested or validated for use in crime reconstructions. Further, recent movements to critically evaluate the ethics surrounding the presentation of human remains have failed to address the use of 3D printed replica bones. As such, this research addresses the knowledge gap surrounding the accuracy of 3D printed replicas of skeletal elements and investigates how the public feels about the use of 3D printed replicas. Three experimental studies focussed on metrology and identified 3D printed replicas to be accurate to within ± 2.0 mm using computed tomography (CT) scanning, and to within ± 0.2 mm or to 0-5% difference using micro-CT. The potential loss of micromorphological details was also examined and identified that quality control steps were key in identifying and mitigating loss of detail. A fourth experimental study collected data on the opinion of the public of the use of 3D printed human remains in courtroom demonstrations. Respondents were broadly positive and considered that prints can be produced ethically by maintaining the dignity and respect of the decedent. A framework that helps to assess ethical practices was developed as well as an adaptable pathway that can assist with assessing the quality and accuracy of 3D prints. The findings from this research contribute to an empirical evidence base that can underpin future 3D printed crime reconstructions and provides guidance for creating accurate 3D prints that can inform future practice and research endeavours