A Comparison of Small-Aperture and Image-Based Spectrophotometry of Paintings

Berns, Roy S.; Taplin, Lawrence A.; Imai, Francisco H.; Day, Ellen A.; Day, David

doi:10.1179/sic.2005.50.4.253

Cited by 11 publications

(7 citation statements)

References 11 publications

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“…Munsell Color Science Laboratory also work with major museums in US, like National Gallery of Art, Washington, DC and the Museum of Modern Art, New York for spectroscopy study of artworks …”

Section: Introductionmentioning

confidence: 99%

Practical application of browns and grays based on a vector concept—The practical strength the asymmetrical Munsell color space

2018

Color Research & Application

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A comparison was done regarding tertiary students' response between the symmetrical color wheel—The Itten Color Wheel developed by Johanne Itten at Bauhaus School and the asymmetrical Munsell Color Space developed by Professor Albert Munsell. One of the significant differences was the students' response on the representation of browns and grays. Students realized the Itten Color Wheel did not indicate these less chromatic browns and grays in relation to their pure hues while the Munsell Color Space arranged these browns and grays progressively in accurate vector length from one hue to another. The Munsell Color Space was first developed with watercolor paint representing the true practical range of each hue with its transitional tertiary colors, namely the intermediate browns and grays within the color space. The practical range between any two or more hues could be visualized with the help of these intermediate browns and grays. To investigate further the importance of the asymmetrical structure of the Munsell Color Space and the practical advantage through representing browns and grays in the color space, this article will present a vector approach of color planning. This approach further enhances the learning of color theory based on the Munsell Color Space. A few practical examples are also shown in this article to illustrate how this vector approach may help in learning and planning color applications.

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Section: Introductionmentioning

confidence: 99%

Practical application of browns and grays based on a vector concept—The practical strength the asymmetrical Munsell color space

2018

Color Research & Application

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“…The design of these instruments is based on two different principles of operation. In the first one the white light reflected by the object is analyzed by imaging monochromators resulting into images of high spatial but limited spectral information [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Their advantages is that they can be operated under any lighting conditions and thus allow for field measurements.…”

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confidence: 99%

IRIS: a novel spectral imaging system for the analysis of cultural heritage objects

et al. 2011

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A new portable spectral imaging system is herein presented capable of acquiring images of high resolution (2MPixels) ranging from 380 nm up to 950 nm. The system consists of a digital color CCD camera, 15 interference filters covering all the sensitivity range of the detector and a robust filter changing system. The acquisition software has been developed in "LabView" programming language allowing easy handling and modification by end-users. The system has been tested and evaluated on a series of objects of Cultural Heritage (CH) value including paintings, encrusted stonework, ceramics etc. This paper aims to present the system, as well as, its application and advantages in the analysis of artworks with emphasis on the detailed compositional and structural information of layered surfaces based on reflection & fluorescence spectroscopy. Specific examples will be presented and discussed on the basis of system improvements. INTRODUCTIONSpectral imaging is a well-known methodology for the analysis of paintings with high spatial resolution [1]. Through the years a number of systems have been developed to fully exploit the advantages offered by this technique in mapping the compositional and stratigraphic information of the analysed surfaces [2]. The design of these instruments is based on two different principles of operation. In the first one the white light reflected by the object is analyzed by imaging monochromators resulting into images of high spatial but limited spectral information [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Their advantages is that they can be operated under any lighting conditions and thus allow for field measurements. The second one is based on the illumination of the object by monochromatic light providing high spatial as also spectral information [18,19]. Its main disadvantages are the limited scanning speed, as well as, the restriction for limited environmental lighting upon operation. In-house or laboratory measurements can be performed with both techniques, since the environmental light conditions are easily controlled. On the contrary field measurements using ambient day light promote imaging monochromators as the only choice. Analytical problems requiring the application of both techniques simultaneously do exist and are based on the fluorescence spectral imaging [20][21][22]. In this case, researchers need to control the illumination wavelength for excitation as also to record the full fluorescence spectrum with high spatial resolution. In this work we are presenting an imaging monochromator, with emphasis on portability and robust structure to enable reliable field measurements, which also allows for high spatial and spectral resolution. The system IRIS [23] incorporates a high resolution CCD sensor (2 MPixels) along with a spectral resolution of 15 band-pass filters, ranging from UV (380 nm) up to NIR (950 nm). The system is mobile, very robust, sensitive and easy to be controlled by the end-users. The operating software is tailor made and has been developed in LabView ...

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“…The application of multispectral imaging to Western European easel paintings has been an active area of research since the 1990s 1,2,3,4,5,6,7,8,9,10,11,12 . Given its non-invasive nature, it has increasingly been applied to the study of manuscripts where in general no sampling of the artefact is allowed 4,13 .…”

Section: Introductionmentioning

confidence: 99%

Remote multispectral imaging with PRISMS and XRF analysis of Tang tomb paintings

2011

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PRISMS (Portable Remote Imaging System for Multispectral Scanning) is a multispectral/hyperspectral imaging system designed for flexible in situ imaging of wall paintings at high resolution (tens of microns) over a large range of distances (less than a meter to over ten meters). This paper demonstrates a trial run of the VIS/NIR (400-880nm) component of the instrument for non-invasive imaging of wall paintings in situ. Wall painting panels from excavated Tang dynasty (618-907AD) tombs near Xi'an were examined by PRISMS. Pigment identifications were carried out using the spectral reflectance obtained from multispectral imaging coupled with non-invasive elemental analysis using a portable XRF.

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A Comparison of Small-Aperture and Image-Based Spectrophotometry of Paintings

Cited by 11 publications

References 11 publications

Practical application of browns and grays based on a vector concept—The practical strength the asymmetrical Munsell color space

Practical application of browns and grays based on a vector concept—The practical strength the asymmetrical Munsell color space

IRIS: a novel spectral imaging system for the analysis of cultural heritage objects

Remote multispectral imaging with PRISMS and XRF analysis of Tang tomb paintings

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