Digital image processing techniques as a tool for evaluating and mapping patinas on granite monuments

Bustamante Montoro, Rosa and Prendes, Nicanor (2007). Digital image processing techniques as a tool for evaluating and mapping patinas on granite monuments. In: "Workshop W3 International Workshop on Preservation of Natural Stone and Rock Weathering", 12/07/2007 - 15/07/2007, Madrid, España. ISBN 978-0-415-45018-8.

Description

Title: Digital image processing techniques as a tool for evaluating and mapping patinas on granite monuments
Author/s:
  • Bustamante Montoro, Rosa
  • Prendes, Nicanor
Item Type: Presentation at Congress or Conference (Article)
Event Title: Workshop W3 International Workshop on Preservation of Natural Stone and Rock Weathering
Event Dates: 12/07/2007 - 15/07/2007
Event Location: Madrid, España
Title of Book: Proceedings of the International Workshop on Preservation of Natural Stone and Rock Weathering
Date: 14 July 2007
ISBN: 978-0-415-45018-8
Volume: I
Subjects:
Freetext Keywords: digital image, histogram image, mapping pathology
Faculty: E.T.S. Arquitectura (UPM)
Department: Construcción y Tecnología Arquitectónica
UPM's Research Group: Análisis e intervención en el patrimonio arquitectónico (AIPA)
Creative Commons Licenses: Recognition - Non commercial - Share

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Abstract

Monument conservation is related to the interaction between the original petrological parameters of the rock and external factors in the area where the building is sited, such as weather conditions, pollution, and so on. Depending on the environmental conditions and the characteristics of the materials used, different types of weathering predominate. In all, the appearance of surface crusts constitutes a first stage, whose origin can often be traced to the properties of the material itself. In the present study, different colours of “patinas” were distinguished by defining the threshold levels of greys associated with “pathology” in the histogram. These data were compared to background information and other parameters, such as mineralogical composition, porosity, and so on, as well as other visual signs of deterioration. The result is a map of the pathologies associated with “cover films” on monuments, which generate images by relating colour characteristics to desired properties or zones of interest.

More information

Item ID: 10648
DC Identifier: http://oa.upm.es/10648/
OAI Identifier: oai:oa.upm.es:10648
Deposited by: Prof. Rosa Bustamente Montoro
Deposited on: 09 Apr 2012 10:11
Last Modified: 26 Mar 2020 11:33
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