Greg Williamson

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In this paper we propose a reliable surface imaging method for the non-invasive detection of morphological changes in paintings. Usually, the evaluation and quantification of changes and defects results mostly from an optical and subjective assessment, through the comparison of the previous and subsequent state of conservation and by means of condition(More)
Sites and objects of cultural heritage from art to ancient inscriptions to ruins are under constant attack by time and the environment. W hile much is known about how material components change from laboratory-based artificial aging, very little is known about the process or rates of change of actual objects and sites in situ. Reflectance T ransformation(More)
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