Ornamental stone finished product aesthetic inspection and characterization through a combined digital spectrophotometric approach

Bonifazi, Giuseppe; Marinelli, Stefano

doi:10.1117/12.473969

Cited by 3 publications

(1 citation statement)

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“…The bibliography relating to stone surface luster is fairly rich in contributions although it mainly takes into consideration the gloss of polished slate (Wright and Rouse, 1993;Bonifazi and Marinelli, 2003); on the contrary, research assessing the luster created by crystals of a rough-finished stone is missing; some studies have been carried out about the colour variation (Benavente et al, 2003;Sousa and Gonçalves, 2012) since colour is one of the most important aesthetic features that influence the suitability of stone for dimension stone production (Saliu, 2008).…”

Section: Introductionmentioning

confidence: 99%

Surface processing of stone by water-jet: assessment of the minerals’ luster and comparison with traditional technologies

Careddu¹,

Mazzella²,

Dessi³

2017

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Natural granite stones play an important role in construction and contemporary design because they are often used for cladding, flooring and generally for street decor. Luster is one of the features which are worth focussing on in order to determine where and how exactly natural stones should be used. Luster is directly related to the aesthetic features of the stone. It is not easily assessed due to the lack of economical instruments as well as standards. The objective of this study is to determine and analyze luster appearing on rough stone surface obtained using different surface finishing methods. For this purpose, a granite with a finish obtained using traditional technologies as well as a varied water-jet technique is studied. Image processing of the specimen are used to assess the luster of each mineral type in relation to the surface finishing technology. The correlations between operating parameters with luster are studied. The variations in the percentage of shiny crystals are also determined. The results of these tests indicate that water-jet technology further enhance the luster more than the competing technologies. Finally, the proposed method for the assessment of the percentage of shiny crystals on a rough stone surface has proven effective.

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Section: Introductionmentioning

confidence: 99%

Surface processing of stone by water-jet: assessment of the minerals’ luster and comparison with traditional technologies

Careddu¹,

Mazzella²,

Dessi³

2017

Episodes

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The effects of solar UV radiation on the gloss values of polished stone surfaces

Careddu

Marras

2013

Construction and Building Materials

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Hyperspectral imaging based techniques in ornamental stone characterization

Bonifazi

Serranti

Menesatti³

2005

SPIE Proceedings

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Ornamental stones are usually utilized for many purposes, ranging from structural to aesthetic ones. In this wide range of utilization, many different industrial sectors are involved. For all of them it is very important, at a different level, that these materials satisfy not only specific physical-chemical-mechanical requirements, but also some attributes that are much more difficult to quantify, that is those attributes strictly related to the final pictorial aspect of the stone manufactured goods. Stone pictorial-aesthetic characteristics are strongly influenced by stone surface status, that is by the surfaces reflectance properties. Such a property depends from stone compositional-textural characteristics and from the working procedures applied. The first set of attributes are related to stone mineral composition and their micro/macro arrangement, the others are related to the tools utilized and the actions applied in terms of operation sequence and workers knowledge-expertise. Each stone and each macro-operation carried out lead to a stone product whose finishing has to follow a specific rule: "optimal" polishing procedures for a stone can lead to very poor results for others. The study was addressed to evaluate the possibility to introduce a new hyperspectral imaging based approach to quantify the level of polishing of stone products and, at the same time, trying to perform also a pictorial-aesthetic characterization trough the identification of natural and/or working defects

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Ornamental stone finished product aesthetic inspection and characterization through a combined digital spectrophotometric approach

Cited by 3 publications

References 0 publications

Surface processing of stone by water-jet: assessment of the minerals’ luster and comparison with traditional technologies

Surface processing of stone by water-jet: assessment of the minerals’ luster and comparison with traditional technologies

The effects of solar UV radiation on the gloss values of polished stone surfaces

Hyperspectral imaging based techniques in ornamental stone characterization

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