7 results on '"Cerys Jones"'
Search Results
2. Understanding multispectral imaging of cultural heritage:Determining best practice in MSI analysis of historical artefacts
- Author
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Melissa Terras, Cerys Jones, Christina Duffy, and Adam Gibson
- Subjects
Archeology ,Knowledge management ,Computer science ,workflow ,Materials Science (miscellaneous) ,Reflective practice ,Best practice ,best practice ,02 engineering and technology ,Conservation ,01 natural sciences ,law.invention ,Documentation ,law ,multispectral imaging ,advanced imaging analysis ,Action research ,Project management ,Spectroscopy ,business.industry ,010401 analytical chemistry ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Cultural heritage ,Workflow ,cultural heritage imaging ,Chemistry (miscellaneous) ,digitization ,CLARITY ,0210 nano-technology ,business ,General Economics, Econometrics and Finance - Abstract
Although multispectral imaging (MSI) of cultural heritage, such as manuscripts, documents and artwork, is becoming more popular, a variety of approaches are taken and methods are often inconsistently documented. Furthermore, no overview of the process of MSI capture and analysis with current technology has previously been published. This research was undertaken to determine current best practice in the deployment of MSI, highlighting areas that need further research, whilst providing recommendations regarding approach and documentation. An Action Research methodology was used to characterise the current pipeline, including: literature review; unstructured interviews and discussion of results with practitioners; and reflective practice whilst undertaking MSI analysis. The pipeline and recommendations from this research will improve project management by increasing clarity of published outcomes, the reusability of data, and encouraging a more open discussion of process and application within the MSI community. The importance of thorough documentation is emphasised, which will encourage sharing of best practice and results, improving community deployment of the technique. The findings encourage efficient use and reporting of MSI, aiding access to historical analysis. We hope this research will be useful to digitisation professionals, curators and conservators, allowing them to compare and contrast current practices.
- Published
- 2020
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3. The co-evolution of historical source materials in the geophysical, hydrological and meteorological sciences
- Author
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Heather Sangster, Neil Macdonald, and Cerys Jones
- Subjects
010504 meteorology & atmospheric sciences ,business.industry ,05 social sciences ,Geography, Planning and Development ,Environmental resource management ,0507 social and economic geography ,01 natural sciences ,Variety (cybernetics) ,Geography ,Earth and Planetary Sciences (miscellaneous) ,General Earth and Planetary Sciences ,Resilience (network) ,business ,050703 geography ,0105 earth and related environmental sciences - Abstract
Historical data sources are used by a wide variety of disciplines, but rarely do they look outside their particular research fields at how others are using and applying historical data. The use and application of historical data has grown rapidly over the last couple of decades within the meteorological, geophysical and hydrological disciplines, but have done so relatively independently. By coevolving, each discipline has developed separate themes or areas, with varying degrees of uptake beyond their academic communities. We find that whilst the geophysical discipline has been relatively successful in engaging with international policymakers and stakeholders, this has not been reflected within the meteorological or hydrological disciplines to date. This disparity has occurred for a variety of reasons, including varying scales of disaster and social, political and cultural structures. In examining current developments within the disciplines, evidence suggests that this disparity is lessening, as each are using online databases and some citizen science, but that they continue to evolve independently with little unifying structure or purpose. This continued autonomy makes multi-hazard analysis challenging which, considering the potential that historical datasets present in the emerging field of multi-hazards analysis, is a considerable hindrance to this field of research. In looking forward, opportunities emerge for improved understanding of the risks presented to societies by natural hazards in the past, but also for examining how resilience, behaviour and adaptation alter during periods of repose.
- Published
- 2017
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4. Affine registration of multispectral images of historical documents for optimized feature recovery
- Author
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Cerys Jones, Michael B. Toth, William A. Christens-Barry, Adam Gibson, and Melissa Terras
- Subjects
Linguistics and Language ,Computer science ,business.industry ,010401 analytical chemistry ,Multispectral image ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Language and Linguistics ,0104 chemical sciences ,Computer Science Applications ,Cultural heritage ,Feature (computer vision) ,Computer vision ,Affine transformation ,Artificial intelligence ,0210 nano-technology ,business ,Information Systems - Abstract
Multispectral (MSI) imaging of historical documents can recover lost features, such as text or drawings. This technique involves capturing multiple images of a document illuminated using different wavelengths of light. The images created must be registered in order to ensure optimal results are produced from any subsequent image processing techniques. However, the images may be misaligned due to the presence of optical elements such as filters, or because they were acquired at different times or because the images were captured from different copies of the documents . There is little prior work or information available about which image registration techniques are most appropriate. Image registration of multispectral images is challenging as the illumination changes for each image and the features visible in images captured at different wavelengths may not appear consistently throughout the image sequence. Here, we compare three image registration techniques: two based on similarity measures and a method based on phase correlation. These methods are characterized by applying them to realistic surrogate images and then assessed on three different sets of real multispectral images. Mutual information is recommended as a measure for affine image registration when working with multispectral images of documentary material as it was proven to be more robust than the other techniques tested.
- Published
- 2019
- Full Text
- View/download PDF
5. An assessment of multimodal imaging of subsurface text in mummy cartonnage using surrogate papyrus phantoms
- Author
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Adam Gibson, Kathryn E. Piquette, Uwe Bergmann, William Christens-Barry, Graham Davis, Marco Endrizzi, Shuting Fan, Sina Farsiu, Anthony Fitzgerald, Jennifer Griffiths, Cerys Jones, Guorong Li, Phillip L. Manning, Charlotte Maughan Jones, Roberta Mazza, David Mills, Peter Modregger, Peter R. T. Munro, Alessandro Olivo, Alice Stevenson, Bindia Venugopal, Vincent Wallace, Roy A. Wogelius, Michael B. Toth, and Melissa Terras
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Papyrus ,lcsh:QD71-142 ,Phantom ,lcsh:Fine Arts ,Surrogate ,lcsh:Analytical chemistry ,phantom ,mummy cartonnage ,Mummy cartonnage ,papyrus ,surrogate ,lcsh:N ,Heritage imaging - Abstract
Ancient Egyptian mummies were often covered with an outer casing, panels and masks made from cartonnage: a lightweight material made from linen, plaster, and recycled papyrus held together with adhesive. Egyptologists, papyrologists, and historians aim to recover and read extant text on the papyrus contained within cartonnage layers, but some methods, such as dissolving mummy casings, are destructive. The use of an advanced range of different imaging modalities was investigated to test the feasibility of non-destructive approaches applied to multi-layered papyrus found in ancient Egyptian mummy cartonnage. Eight different techniques were compared by imaging four synthetic phantoms designed to provide robust, well-understood, yet relevant sample standards using modern papyrus and replica inks. The techniques include optical (multispectral imaging with reflection and transillumination, and optical coherence tomography), X-ray (X-ray fluorescence imaging, X-ray fluorescence spectroscopy, X-ray micro computed tomography and phase contrast X-ray) and terahertz-based approaches. Optical imaging techniques were able to detect inks on all four phantoms, but were unable to significantly penetrate papyrus. X-ray-based techniques were sensitive to iron-based inks with excellent penetration but were not able to detect carbon-based inks. However, using terahertz imaging, it was possible to detect carbon-based inks with good penetration but with less sensitivity to iron-based inks. The phantoms allowed reliable and repeatable tests to be made at multiple sites on three continents. The tests demonstrated that each imaging modality needs to be optimised for this particular application: it is, in general, not sufficient to repurpose an existing device without modification. Furthermore, it is likely that no single imaging technique will to be able to robustly detect and enable the reading of text within ancient Egyptian mummy cartonnage. However, by carefully selecting, optimising and combining techniques, text contained within these fragile and rare artefacts may eventually be open to non-destructive imaging, identification, and interpretation.
- Published
- 2018
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6. Examining the social consequences of extreme weather: the outcomes of the 1946/1947 winter in upland Wales, UK
- Author
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Sarah J. Davies, Cerys Jones, and Neil Macdonald
- Subjects
Atmospheric Science ,Global and Planetary Change ,Ecology ,media_common.quotation_subject ,Local scale ,Vulnerability ,language.human_language ,Welsh ,Extreme weather ,Rurality ,Geography ,Emotional distress ,language ,Social consequence ,Psychological resilience ,Socioeconomics ,media_common - Abstract
Extreme forms of weather are predicted to become more frequent experiences in the future. However, the hardest event to mitigate against is the unexpected. In the UK, the occurrence of winter snowfall is difficult to predict, highly variable, both spatially and temporally and predicted to become less common in the future. This paper examines the consequences of the severe winter of 1946/1947 at the local scale through a Welsh case study of Cwm Tywi, a community of upland sheep farms. This community had shown great resilience during the snowiest winter on record in comparison with other, more urban communities, but the inhabitants eventually abandoned their homes because of the emotional distress caused by the loss of a large proportion of the livestock. In addition to the severity of the snow, perceptions of the extreme nature of this event and the community’s ability to mitigate as a result of rurality, self-sufficiency and remoteness are investigated through the analysis of interviews, oral histories, and other documentary accounts. This case study provides an insight into the complexity of understanding vulnerability, adaptation and resilience, which are temporally and spatially specific.
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- 2012
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7. Historical weather accounts from Wales: an assessment of their potential for reconstructing climate
- Author
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Neil Macdonald, Cerys Jones, Cathryn Angharad Charnell-White, and Sarah J. Davies
- Subjects
Atmospheric Science ,Geography ,Climatology - Abstract
Macdonald, N., Jones, C. A., Davies, S. J., Charnell-White, C. A. (2010). Historical Weather Accounts from Wales: An Assessment of their Potential for Reconstructing Climate. Weather, 65 (3), 72-81
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- 2010
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