Eleni Kotoula

Significance Proponents of the altered states of consciousness (ASC) model have argued that hallucinogens have influenced the prehistoric making of images in caves and rock shelters. However, the lack of direct evidence for the consumption of hallucinogens at any global rock art site has undermined the ASC model. We present the first clear evidence...

Advanced 2-D and 3-D computer visualizations are increasingly being used for recording and documentation, analysis, dissemination, and public engagement purposes. Recent technological advances not only considerably improve data acquisition, processing, and analysis but also enable easy and efficient online presentation. This article evaluates the c...

Grove Street Cemetery (GSC) of New Haven is one of the 60 National Historic Landmarks in Connecticut; it is also the ninth such landmark in New Haven since 2000. Besides, the cemetery has an indispensable place in the daily life of New Haven community. The aim of the study is to develop an efficient, simple, and low-cost methodology for the assessm...

Reflectance Transformation Imaging (RTI) has been increasingly used for the recording, documentation and analysis of cultural heritage. A series of images of a static object, taken in raking light at constant exposure, is synthetised using Polynomial Texture Mapping or the Hemispherical Harmonics fitter, resulting in polynomial texture maps or RTI...

The study of cultural heritage involves many different activities, including visualizing digital data, analyzing information and sharing results. Current technologies focus on providing better tools for data representation and processing, neglecting the importance of analysis and sharing. In this paper, we present a software system, CHER-Ob, which...

This paper deals with the documentation, and virtual visual analysis of pictographs using interactive relighting, digital image enhancement techniques and diagrammatic representations. It discusses areas of interest for the analysis of low surface detail, large and geometrically complex superimposed pictographs. The synergy of reflectance transform...

This article addresses to what extent computer applications contribute to museum conservation objectives, defined as the balance of preservation, investigation, and display of artifacts. It evaluates novel two- and threedimensional digitization technologies for enhanced examination and recording. It provides case studies on alternative digital cons...

bstract: This article discusses the design of a quick response (QR) coded 3D model of a Babylonian mathematical clay tablet for 3D printing purposes, in an attempt to make better use of advanced 3D visualizations, encourage public engagement and question the influence of tagging and 3D printing on the way humans interact with ancient documentary ar...

Pleito Cave is situated in the Wind Wolves Preserve in South Central California and contains complex polychrome rock art which the authors are currently analysing. The analysis utilises a range of technologies including pXRF, portable Raman, 3D laser scanning, RTI and layer separation to examine chemical composition, relative positions of rock art...

Artefacts' reconstruction is a fundamental part of conservation and one of the most common remedial conservation activities with great contribution to archaeological research. The manual procedure for fragments' matching is a painstaking, time- and space-consuming operation. As a result the development of working methodologies for digital refitting...

The study of cultural heritage involves many different activities, including digital data visualization, information analysis and sharing results. Current technologies focus on providing better tools for data representation and processing, neglecting the importance of analysis and sharing. In this paper, we present a software system, CHER-Ob, which...

The Folkton ‘Drums’ are the most remarkable decorated artefacts from Neolithic Britain. A new analysis using Reflectance Transformation Imaging (RTI) and photogrammetry (PG) reveals new evidence for previously unrecorded motifs in addition to plentiful evidence for erasure and reworking. A case is made for understanding the decoration of these chal...

Critical evaluation of the actions involved in conservation practice reveals that the limitations of traditional approaches for examination and treatment influence decision-making and affect the artefacts’ interpretation and display. Such problems demonstrate the technological needs and underlie the research aims for the development of scientific c...

How can the utilization of newly developed advanced portable technologies give us greater understandings of the most complex of prehistoric rock art? This is the questions driving The Gordian Knot project analysing the polychrome Californian site known as Pleito. New small transportable devices allow detailed on-site analyses of rock art. These non...

The aim of this paper is to compare the tracing made at the Bronze Age petroglyph of “Barreira” in Verdoejo (Portugal) (Novoa and Costas 2004) with two different and new methodologies based on photogrammetry. This technique is oriented to reduce the different problems of subjectivity that are present in the old systems of registry, and furthermore...

This paper discusses the interim results of the AHRC RTISAD project. The project has developed and tested a range of techniques for gathering and processing reflectance transformation imaging (RTI) data. It has also assembled a detailed understanding of the breadth of RTI practice. Over the past decade the range of applications and algorithms in th...

This paper discusses the interim results of the AHRC RTISAD project. The project has developed and tested a range of techniques for gathering and processing reflectance transformation imaging (RTI) data. It has also assembled a detailed understanding of the breadth of RTI practice. Over the past decade the range of applications and algorithms in th...