An optimisation study of colour measurements on digitised slides of painted works of art

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National Technical University of Athens

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Title

An optimisation study of colour measurements on digitised slides of painted works of art (EN)

Creator

Sotiropoulou, S (EN)

Chryssoulakis, Y (EN)

Type

journalArticle (EN)

Partial document
Publication in journal (EN)

Article
Scientific article (EN)

Issued

2014-03-01T01:15:28Z

2000 (EN)

Year

2000 (EN)

Description

This paper deals with the problem of the colorimetric fidelity of digitised colour slides of painted works of art. A six-matrix conversion model was derived that permitted the transformation of any RGB device-dependent measurement on digitised colour slides to XYZ CIE 1931 device-independent values. The model was calibrated against a reference colour chart. Eighty-one uniformly-painted colour samples were photographed together with a painting on a 4 x 5 inch colour slide that was digitised using a high resolution scanner. A 3 x 3 transformation matrix, of the corrected R, G and B values and the respective X, Y and Z tristimulus values provided by spectrophotometry, was calculated. The calculated matrix was then applied to a 13th century Byzantine fresco, captured on the same digitised slide, to transform the RGB measurements to XYZ CIE 1931 device-independent values which were then converted into the L*a*b* CIE 1976 colorimetric system. (EN)

Scientific field

Engineering, Chemical (EN)

Materials Science, Textiles (EN)

Chemistry, Applied (EN)

Natural Sciences ▶ Chemical sciences
Applied Chemistry (EN)

Engineering and Technology
Chemical Engineering (EN)

Engineering and Technology ▶ Materials Engineering
Textiles (EN)

Journal

JOURNAL OF THE SOCIETY OF DYERS AND COLOURISTS (EN)

Language

English

Publisher