Raman Binary Mapping of Iron Age Ostracon in an Unknown Material Composition and High‐Fluorescence Setting—A Proof of Concept

The textual evidence from ancient Judah is mainly limited to ostraca, ink‐on‐clay inscriptions. Their facsimiles (binary depictions) are indispensable for further analysis. Previous attempts at mechanizing the creation of facsimiles have been problematic. Here, we present a proof of concept of objec...

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Veröffentlicht in:Archaeometry 2019-04, Vol.61 (2), p.459-469
Hauptverfasser: Shaus, A., Sober, B., Tzang, O., Ioffe, Z., Cheshnovsky, O., Finkelstein, I., Piasetzky, E.
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container_end_page 469
container_issue 2
container_start_page 459
container_title Archaeometry
container_volume 61
creator Shaus, A.
Sober, B.
Tzang, O.
Ioffe, Z.
Cheshnovsky, O.
Finkelstein, I.
Piasetzky, E.
description The textual evidence from ancient Judah is mainly limited to ostraca, ink‐on‐clay inscriptions. Their facsimiles (binary depictions) are indispensable for further analysis. Previous attempts at mechanizing the creation of facsimiles have been problematic. Here, we present a proof of concept of objective binary image acquisition, via Raman mapping. Our method is based on a new peak detection transform, handling the challenging fluorescence of the clay, and circumventing preparatory ink composition analysis. A sequence of binary mappings (signifying the peaks) is created for each wavelength; their legibility reflects the prominence of Raman lines. Applied to a biblical‐period ostracon, the method exhibits high statistical significance.
doi_str_mv 10.1111/arcm.12419
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source Wiley Online Library Journals Frontfile Complete
subjects Archaeology
biblical archaeology
Ceramics
Clay
facsimile
Fluorescence
high fluorescence
Image processing systems
implicit and posterior composition analysis
Iron Age
ostracon
peak transform
Raman mapping
Religious studies
title Raman Binary Mapping of Iron Age Ostracon in an Unknown Material Composition and High‐Fluorescence Setting—A Proof of Concept
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