Multispectral document enhancement: ancient carbonized scrolls

Ware, Gene A.; Chabries, Douglas M.; Christiansen, Richard W.; Martin, Curtis E.

doi:10.1109/igarss.2000.859615

Cited by 6 publications

(11 citation statements)

References 2 publications

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“…Evidence for this is shown in Figure 7, which displays a pseudo-colour image of plate 316, roll 10, of the Petra scrolls. This image was processed from a multispectral image cube with a digital-image-processing algorithm (Ware et al 2000a(Ware et al : 2486 to show the reflectance of various portions of the specimen coded with colour (portions of equal reflectance are assigned the same colour). The blue outline around the fragment is an artefact of the digital algorithm used to obtain the fragment mask.…”

Section: The Scrolls Of Petramentioning

confidence: 99%

Imaging the past: recent applications of multispectral imaging technology to deciphering manuscripts

Chabries¹,

Booras

Bearman³

2003

Antiquity

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Multi-spectral imaging (MSI), which was developed to explore the surface of the earth and other planets from space, has been adapted to read and record faded or burnt manuscripts. The authors show how MSI achieved new readings from carbonised and damaged fragments of papyrus scrolls from Herculaneum, Petra and the Judean Desert. The method has potential for investigating the degraded ornamental surfaces of other artefacts.

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Section: The Scrolls Of Petramentioning

confidence: 99%

Imaging the past: recent applications of multispectral imaging technology to deciphering manuscripts

Chabries¹,

Booras

Bearman³

2003

Antiquity

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“…Materials such as inks and parchment interact with different wavelengths of light in various ways, for example, iron-gall ink reflects infrared light whereas carbon-based ink absorbs it [18]. MSI can differentiate between different inks and pigments [18][19][20], recover hidden features [21][22][23][24] and provide information on the current condition of an object [25][26], which can be useful for conservation practice.…”

Section: Multispectral Imagingmentioning

confidence: 99%

“…Light with wavelengths invisible to the human eye was first used to enhance faded text in the early 1900s by Raphael Kögel [27][28] who used ultraviolet light to increase the contrast between the background and the text. Since then images have been captured for a range of historical artefacts in order to recover lost text and features, such as the Dead Sea Scrolls [21], [29], Petra and Herculaneum scrolls [22], the Archimedes Palimpsest [30], and the letters of David Livingstone [31]. It has been widely used to recover undertexts in palimpsests ( [23], [31]- [34]) as well as to locate watermarks in paper documents [35][36] and underdrawings in paintings [25], [37][38][39].…”

Section: Multispectral Imagingmentioning

confidence: 99%

“…Therefore, documentation can be inconsistent due to the focus of the publication, and the objectives of the authors and institution carrying out the research. Furthermore, although many papers describe the imaging process for particular artefacts, such as palimpsests [23], ostraca [60], paintings [25] and carbonized papyri [22], collections usually contain a variety of artefacts. Consequently, a pipeline describing techniques is required to better understand what is currently meant by multispectral imaging in cultural heritage.…”

Section: Multispectral Imagingmentioning

confidence: 99%

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Understanding multispectral imaging of cultural heritage: Determining best practice in MSI analysis of historical artefacts

Jones¹,

Duffy

Gibson³

et al. 2020

Journal of Cultural Heritage

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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. Highlights:• A range of approaches are undertaken for multispectral imaging of heritage.• An Action Research methodology was used to characterise the current pipeline.• A set of recommendations for best practice and documentation are provided.

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“…Multispectral imaging is a powerful tool used in several application fields such as spatio-spectral diagnostics in agricultural [7], archaeology [8], art [9] and painting [10]. Multispectral imaging device determines the spectral characteristics of each pixel in the scene by providing images at several wavelengths.…”

Section: Introductionmentioning

confidence: 99%

Multispectral device for help in diagnosis

et al. 2012

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In order to build biological tissues spectral characteristics database to be used in a multispectral imaging system a tissues optical characterization bench is developed and validated. Several biological tissue types have been characterized in vitro and ex vivo with our device such as beef, turkey and pork muscle and beef liver. Multispectral images obtained have been analyzed in order to study the dispersion of biological tissues spectral luminance factor. Tissue internal structure inhomogeneity was identified as a phenomenon contributing to the dispersion of spectral luminance factor. This dispersion of spectral luminance factor could be a characteristic of the tissue. A method based on envelope technique has been developed to identify and differentiate biological tissues in the same scene. This method applied to pork tissues containing muscle and fat gives detection rates of 59% for pork muscle and 14% for pork fat.

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Multispectral document enhancement: ancient carbonized scrolls

Cited by 6 publications

References 2 publications

Imaging the past: recent applications of multispectral imaging technology to deciphering manuscripts

Imaging the past: recent applications of multispectral imaging technology to deciphering manuscripts

Understanding multispectral imaging of cultural heritage: Determining best practice in MSI analysis of historical artefacts

Multispectral device for help in diagnosis

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