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Color‐based automatic detection of worn out varnishes on Stradivari's “ S cotland University” violin back plate
Author(s) -
Dondi Piercarlo,
Lombardi Luca,
Malagodi Marco,
Licchelli Maurizio,
Cacciatori Fausto
Publication year - 2016
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/col.22012
Subject(s) - violin , visual arts , art , hue , musical , artifact (error) , computer science , computer vision , artificial intelligence , art history
UV‐induced fluorescence (UVIFL) photography is widely used in the study of artworks, in particular for the analysis of historical musical instruments (e.g., violins). This technique allows seeing important details, which cannot be observed with visible light, such as retouching, different paints coats, or worn areas of the superficial varnishes. However, the interpretation of UVIFL images may be very complex, in relation to preservation state of the analyzed artifact. The aim of this work is the development of a new tool able to automatically detect the presence of colors related to worn areas on the back plates of historical violins. The proposed solution is a program able to identify some peculiar color hues related to wear, find their position on the surface and compute their percentage respect to the total area. The study was performed on UVIFL imagery of Stradivari's “Scotland University” violin (1734) held in the “Museo del Violino” in Cremona (Italy). © 2015 Wiley Periodicals, Inc. Col Res Appl, 41, 313–316, 2016

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