IMAGE PROCESSING IN MATERIAL ANALYSES OF ARTWORKS
Miroslav Beneš, Barbara Zitová, Janka Hradilová, David Hradil · 2008
In this paper we present a system for processing, description and archiving material analyses used during art restoration Nephele. The aim of the material analyses of painting layers is to identify inorganic and organic compounds using microanalytical methods, and to describe stratigraphy and morphology of layers. The results are used to interpret the applied painting technique. The Nephele system is a database system for material analysis reports, extended with image preprocessing modules and image retrieval facility. The implemented digital image processing methods are image registration, layers segmentation, and grains segmentation. In the archiving part of the Nephele, in addition to traditional database functions we have incorporated image-based retrieval methods into the developed system. They are based on feature descriptions such as the Haralick descriptors of co-occurrence matrices. The presented examples of achieved results show the applicability of