Development of an image-based measurement instrument for gloss characterization

IF 2.3 4区 材料科学 Q2 Chemistry Journal of Coatings Technology and Research Pub Date : 2022-05-31 DOI:10.1007/s11998-022-00630-0
Stijn Beuckels, Jan Audenaert, Peter Hanselaer, Frédéric B. Leloup
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引用次数: 1

Abstract

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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基于图像的光泽度表征测量仪器的研制
光泽是描述表面和物体外观的主要属性之一,因为它有助于一般的质量感知。光泽度是一个多维量,其中“镜面光泽度”是最常用的属性。镜面光泽度计是标准化的,广泛应用于工业。然而,它们的读数仅部分与一般视觉光泽印象相关,后者还包括反射图像的清晰度(DOI)、雾度、对比度和表面均匀性属性。本研究提出了一种更深刻的基于图像的光泽度计(iGM),它包含一个CMOS相机探测器。这个概念并不新鲜,但有限的研究已经进行了包括各种图像处理评价光泽属性。设计的iGM兼容60°镜面光泽度计标准。CMOS探测器捕获反射源图像,对其进行处理以测量表面光泽度的四个感知属性。获得的结果验证了60°镜面光泽度评估,并表明在表征DOI、雾霾和对比度方面具有很好的能力。对比度是一个重要的属性,还没有在工业光泽度计。它是用漫射镜面光源测量的。一般来说,这种iGM保持了镜面光泽度计的硬件原理,同时向具有代表性的光泽度感知计发展。
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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
4.40
自引率
8.70%
发文量
0
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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