Development of an image-based gloss measurement instrument

Leloup, Frédéric; Audenaert, Jan; Hanselaer, Peter

doi:10.1007/s11998-019-00184-8

Cited by 16 publications

(11 citation statements)

References 18 publications

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“…Gloss is a degree of light reflected from the surface and is an important property used to describe the properties of the composite surface. The brightness values vary depending on the surface properties of the composite, the type of light coming to the surface, the angle of impact on the surface (Leloup et al, 2019;Sönmez et al, 2020). Each material has a gloss value.…”

Section: Delta Glossmentioning

confidence: 99%

Printability of bio-composite sheets made from paper mill and cardboard mill waste sludge

Yüce

Genc

Sönmez

et al. 2021

PRT

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Purpose The purpose of this study is to reveal the usability of waste paper sludge on the production of composite materials and the printability of their surfaces were investigated. Design/methodology/approach First, composite plates were produced by using dried and milled waste sludge together with polyester resin and epoxy. Screen printing using water, solvent and UV-based inks were carried out. Findings It was determined that UV and solvent-based inks in both resin groups were permanently attached to the surface of composite plates produced using paper mill waste sludge, while it was found that the adhesion was not achieved sufficiently in cardboard factory waste sludge. Originality/value The unique aspect of this study is obtained the composite plates from paper mill and cardboard mill waste sludge and improved the printability of them.

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Section: Delta Glossmentioning

confidence: 99%

Printability of bio-composite sheets made from paper mill and cardboard mill waste sludge

Yüce

Genc

Sönmez

et al. 2021

PRT

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“…10,38 Leloup et al presented and validated the concept of measuring specular gloss with a CMOS sensor capturing images of the surface of samples. 39 Contrast gloss was measured by adding a diffuse aspecular light source for background illumination. Orange peel could be visualized from sample surface pictures.…”

Section: Introductionmentioning

confidence: 99%

“…Similar to previous work, an additional aspecular light source is added perpendicular to the sample surface to include the measurement of a contrast metric. 39 Such a contrast measurement is, to the best of our knowledge, not available in any industrial specular gloss meter yet. Furthermore, the presented instrument incorporates gloss attribute metrics requiring more advanced image processing methods into an industrial gloss meter, which opens opportunities for a more profound characterization of gloss.…”

Section: Introductionmentioning

confidence: 99%

“…instrument proposed byLeloup et al featuring a surface-focused camera sensor 39. Acknowledgments The would like to thank the company Rhopoint Instruments Ltd. (UK) for partly funding this study and for their support in the test setup design and equipment.Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.…”

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confidence: 99%

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Development of an image-based measurement instrument for gloss characterization

et al. 2022

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Gloss is one of the main attributes to describe the appearance of surfaces and objects, as it contributes to the general quality perception. Gloss is a multidimensional quantity of which ‘specular gloss’ is the most commonly applied attribute. Specular gloss meters are standardized and widely used in industry. However, their readings correlate only partially to the general visual gloss impression, which also comprises distinctness-of-the-reflected-image (DOI), haze, contrast and surface-uniformity attributes. This study presents a more profound image-based gloss meter (iGM) which incorporates a CMOS camera detector. This concept is not new, but limited research has been conducted on the inclusion of various image processing evaluations for gloss attributes. The designed iGM is compatible to 60° specular gloss meter standards. The CMOS detector captures the reflected source image, which is processed to measure four perceptual attributes of surface gloss. The obtained results validate the 60° specular gloss evaluation and indicate a promising capability in characterizing DOI, haze, and contrast. Contrast is an important attribute that is not available yet in industrial gloss meters. It is measured using a diffuse aspecular light source. Generally, this iGM maintains the hardware principles of specular gloss meters, while evolving toward a representative gloss perception meter.

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“…With the maturity of halftone technology, how to evaluate halftone accurately and objectively is still an unsolved problem. Most image glossiness assessment studies [ 8 ] are all device-based, i.e., based on photometer measurement. In the study of gloss perception in an image, it is currently debated whether the perception of gloss is linked to the statistical parameters of the retinal image [ 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Glossiness Index of Objects in Halftone Color Images Based on Structure and Appearance Distortion

Tanaka

Horiuchi

2022

J. Imaging

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This paper proposes an objective glossiness index for objects in halftone color images. In the proposed index, we consider the characteristics of the human visual system (HVS) and associate the image’s structure distortion and statistical information. According to the difference in the number of strategies adopted by the HVS in judging the difference between images, it is divided into single and multi-strategy modeling. In this study, we advocate multiple strategies to determine glossy or non-glossy quality. We assumed that HVS used different visual mechanisms to evaluate glossy and non-glossy objects. For non-glossy images, the image structure dominated, so the HVS tried to use structural information to judge distortion (a strategy based on structural distortion detection). For glossy images, the glossy appearance dominated; thus, the HVS tried to search for the glossiness difference (an appearance-based strategy). Herein, we present an index for glossiness assessment that attempts to explicitly model the structural dissimilarity and appearance distortion. We used the contrast sensitivity function to account for the mechanism of halftone images when viewed by the human eye. We estimated the structure distortion for the first strategy by using local luminance and contrast masking; meanwhile, local statistics changing in the spatial frequency components for skewness and standard deviation were used to estimate the appearance distortion for the second strategy. Experimental results showed that these two mixed-distortion measurement strategies performed well in consistency with the subjective ratings of glossiness in halftone color images.

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Development of an image-based gloss measurement instrument

Cited by 16 publications

References 18 publications

Printability of bio-composite sheets made from paper mill and cardboard mill waste sludge

Printability of bio-composite sheets made from paper mill and cardboard mill waste sludge

Development of an image-based measurement instrument for gloss characterization

Glossiness Index of Objects in Halftone Color Images Based on Structure and Appearance Distortion

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