Paint layers color measurements through image processing techniques

dc.contributor.author	Αλεξοπούλου - Αγοράνου, Αθηνά	el
dc.contributor.author	Μιχαλόπουλος, Δημήτρης	el
dc.date.accessioned	2015-02-27T13:57:14Z
dc.date.issued	2015-02-27
dc.identifier.uri	http://hdl.handle.net/11400/7035
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	Μετρήσεις χρώματος
dc.subject	Τεχνικές επεξεργασίας εικόνας
dc.subject	Πείραμα
dc.subject	Color measurements
dc.subject	Image processing techniques
dc.subject	Experiment
dc.title	Paint layers color measurements through image processing techniques	en
heal.type	journalArticle
heal.classification	Fine Arts
heal.classification	Chemistry
heal.classification	Τέχνη
heal.classification	Χημεία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85008324
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85023022
heal.classificationURI	N/A-Τέχνη
heal.classificationURI	N/A-Χημεία
heal.dateAvailable	10000-01-01
heal.language	en
heal.access	forever
heal.recordProvider	Τεχνολογικό Εκπαιδευτικό Ίδρυμα Αθήνας.Σχολή Καλλιτεχνικών Σπουδών.Τμήμα Συντήρησης Αρχαιοτήτων και Έργων Τέχνης	el
heal.bibliographicCitation	Alexopoulou, A. and Michalopoulos, D. Paint layers color measurements through image processing techniques. PACT. 45(3). pp.37-40.	en
heal.abstract	This paper deals with the measurement of color stimuli due to paint layers like the ones which are met at the painted works of art and more precisely at the byzantine and post byzantine icons. A new methodology is proposed in order to standardize and therefore facilitate the study of a multicolor painted surface, through a non destructive procedure. The proposed methodology is based on the correlation between the grey level values measured through an image acquisition digitizing system, on an experimental panel constructed according to the byzantine and post byzantine egg tempera technique and the tristimulus values obtained using a spectrophotometer equiped with an integration sphere. The image acquisition is realised using a specially deviced vidicon camera and three optical filters, red, green and blue, alternatively mounted in front of the camera lens and chosen so that their spectral response simulates the color matching functions χ(λ), y(k) and ζ(λ) of the C.I.E. standard observer respectively. In order to perform an exact measurement of the grey level values a personal computer IBM AT equiped with a digitizing card PC-EYE- 1100 6 bit (64 grey levels) is used. The relation between the grey level mean values measured for red, green and blue area of the spectrum, after an apropriate correction of shading phenomena and the tristimulus values X, Y, Z, is described by a linear function.	en
heal.journalName	[χ.ό.]	el
heal.journalName	PACT	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true