Multispectral imaging assisted by image processing

dc.contributor.author	Αλεξοπούλου, Αθηνά-Γεωργία	el
dc.contributor.author	Καμινάρη, Αγαθή-Ανθούλα	el
dc.contributor.author	Παναγόπουλος, Αθανάσιος	el
dc.date.accessioned	2015-01-27T22:11:44Z
dc.date.issued	2015-01-28
dc.identifier.uri	http://hdl.handle.net/11400/4896
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.subject	Papyrus
dc.subject	Writing tablets
dc.subject	Sketches
dc.subject	Copybooks
dc.subject	Hyperspectral imagery
dc.subject	Infrared
dc.subject	Image processing
dc.subject	Πάπυρος
dc.subject	Σκίτσα
dc.subject	Αντίγραφα βιβλίων
dc.subject	Υπερφασματικές εικόνες
dc.subject	Υπέρυθρος
dc.subject	Επεξεργασία εικόνας
dc.title	Multispectral imaging assisted by image processing	en
heal.type	other
heal.secondaryTitle	A useful tool for the study of ancient writing and sketches on different substrates	en
heal.classification	Paleography
heal.classification	Παλαιογραφία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85097064
heal.classificationURI	N/A-Παλαιογραφία
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85099492
heal.keywordURI	http://lod.nal.usda.gov/46606
heal.dateAvailable	10000-01-01
heal.language	en
heal.access	forever
heal.recordProvider	Σχολή Καλλιτεχνικών Σπουδών. Τμήμα Συντήρησης Αρχαιοτήτων και Έργων Τέχνης.	el
heal.publicationDate	2013
heal.abstract	The aim of this paper is to illustrate the substantial help that non-destructive methodology can provide in deciphering text and sketches no matter what the writing substrate is. The most important cases in the evolution of non-destructive testing are breefely presented to conclude in how multispectral imaging assisted by image processing helped in extracting the most information during the study of the ancient papyrus of the Daphni tomb. The study of Schliemann copy books and Nikolaos Gysis sketches served as a model to study the papyrus – the oldest ever found in Greece until today bearing Greek text – and four writing tablets, belonging in the findings of Daphni tomb called “the Poet tomb”. The methodology included the application of traditional colour photography (normal and macro mode), classical infrared reflectography and hyperspectral imaging in the range of 420-1000nm under normal and raking light. Selected areas of the objects were examined using false colour infrared imaging. Simple subtraction algorithms and Principal Component Analysis (PCA) were applied in order to extract maximum information.	en
heal.fullTextAvailability	true