Visual gloss scaling and multidimensional scaling analysis of painted specimens

Billmeyer, Fred W.; O'Donnell, Francis X. D.

doi:10.1002/col.5080120606

Cited by 61 publications

(47 citation statements)

References 9 publications

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“…Many investigations of gloss perception have been carried out with the purpose of good correlation between physical measurements and psychophysical assessments. Most of the studies focused on neutralcolored or texture-free samples, 8,13,14 but colorful surfaces with various textured impressions can be easily found in the automotive industry. It has also been demonstrated that the measured gloss data are not correlated satisfactorily with visually evaluated gloss values over the entire range of gloss levels 15 and so further studies are expected to analyze and scale gloss perception effectively.…”

Section: Introductionmentioning

confidence: 99%

Towards a practical metric of surface gloss for metallic coatings from automotive industry

Wang

et al. 2016

J Coat Technol Res

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The specular gloss of metallic coatings from the automotive industry can be well measured by current glossmeters when the geometry is appropriately chosen from 20°, 60°, and 85°based on the gloss levels observed. However, the measurements are discontinuous and even nonmonotonic at the breakpoints dividing samples into different gloss levels in the whole range, which causes confusion and inconvenience for industry applications. In this study, attempts were made to link the measurements at the three geometries to be continuous monotonically and in the meanwhile to improve the accuracy of estimating visual gloss. A psychophysical experiment based on a magnitude method was carried out to assess the gloss of metallic coatings with different colors and textures. The visually scaled gloss data were compared with spectrophotometric measurements and instrumental specular gloss values under different geometries. With different weighing coefficients for measurements at individual geometries depending on the gloss levels, a model was proposed to describe the visual surface gloss of metallic coatings comprehensively via a practical metric based on the geometry-dependent measurements. In this way, each sample would have a unique overall gloss value highly correlated with its perceptual evaluation over the entire gloss range.

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Section: Introductionmentioning

confidence: 99%

Towards a practical metric of surface gloss for metallic coatings from automotive industry

Wang

et al. 2016

J Coat Technol Res

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“…In 1987 Billmeyer and O'Donnell [Bill87] published an important paper that tried to address the issue of gloss perception from first principles. Working with a set of black, gray, and white paints with varying gloss levels, O'Donnell collected ratings of the apparent difference in gloss between pairs of samples and then used multidimensional scaling techniques to discover the dimensionality of perceived gloss.…”

Section: Introductionmentioning

confidence: 99%

Toward a psychophysically-based light reflection model for image synthesis

Pellacini

Ferwerda

Greenberg

2000

Proceedings of the 27th Annual Conference on Computer Graphics and Interactive Techniques - SIGGRAPH '00

208

244

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In this paper we introduce a new light reflection model for image synthesis based on experimental studies of surface gloss perception. To develop the model, we've conducted two experiments that explore the relationships between the physical parameters used to describe the reflectance properties of glossy surfaces and the perceptual dimensions of glossy appearance. In the first experiment we use multidimensional scaling techniques to reveal the dimensionality of gloss perception for simulated painted surfaces. In the second experiment we use magnitude estimation methods to place metrics on these dimensions that relate changes in apparent gloss to variations in surface reflectance properties. We use the results of these experiments to rewrite the parameters of a physically-based light reflection model in perceptual terms. The result is a new psychophysically-based light reflection model where the dimensions of the model are perceptually meaningful, and variations along the dimensions are perceptually uniform. We demonstrate that the model can facilitate describing surface gloss in graphics rendering applications. This work represents a new methodology for developing light reflection models for image synthesis.

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“…It was shown that physically-defined gloss could not fully explain perceived glossiness [4][5][6], and that gloss perception was affected by illumination [7][8][9], shape [10][11][12], image statistics [13][14][15], and highlight [13,[16][17][18][19]. In most of these studies, achromatic or monochromatic stimuli were used in order to avoid influence of chromaticness.…”

Section: Introductionmentioning

confidence: 99%

Appearance of Gold, Silver and Copper Colors of Glossy Object Surface

Matsunaga

Fukuda

Uchikawa

2016

IJAE

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Abstract:We investigated categorical regions and appearances of gold, silver and copper color, and glossiness for CG spheres with various chromaticities, lightnesses, and contrast glosses. It was found that the chromaticity regions of brown and yellow changed into gold color, those of gray and black into silver color, and a part of brown region changed into copper color with increase of contrast gloss. The magnitude estimates of gold, silver and copper color increased in high saturation chromaticity regions, achromatic regions, and medium saturation regions, respectively as the contrast gloss increased. As lightness levels increase gold and silver color estimates showed almost no change although copper color estimates decreased. It is suggested that the visual system would independently process glossiness and chromaticness of a surface in a lower level, and then, yield appearances of gold, silver and copper colors by combining them in a higher level.

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Visual gloss scaling and multidimensional scaling analysis of painted specimens

Cited by 61 publications

References 9 publications

Towards a practical metric of surface gloss for metallic coatings from automotive industry

Towards a practical metric of surface gloss for metallic coatings from automotive industry

Toward a psychophysically-based light reflection model for image synthesis

Appearance of Gold, Silver and Copper Colors of Glossy Object Surface

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