Gloss evaluation from soft and hard metrologies

Wang, Zihao; Xu, Lizhong; Hu, Yuda; Mirjalili, Fereshteh; Luo, Ming Ronnier

doi:10.1364/josaa.34.001679

Cited by 6 publications

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Smooth surfaces reflect light mainly in the specular direction, whereas diffuse reflection dominates in the case of rough surfaces [13]. Gloss can be measured by two methods; soft metrology or psychophysical evaluation and hard metrology or physiological measurements [14]. Investigations [2,6,8,14,15] conducted to study the relation between gloss and surface texture suggest that the surface texture significantly affect appearance and has high correlations with measured gloss.…”

Section: Glossmentioning

confidence: 99%

“…Gloss can be measured by two methods; soft metrology or psychophysical evaluation and hard metrology or physiological measurements [14]. Investigations [2,6,8,14,15] conducted to study the relation between gloss and surface texture suggest that the surface texture significantly affect appearance and has high correlations with measured gloss. Sofie Ignell et al [1] investigated the relation between colour, gloss and surface texture in injection moulded ABS and PP samples and observed significantly lower GU (gloss units) and a lighter colour on textured surface.…”

Section: Glossmentioning

confidence: 99%

See 1 more Smart Citation

Surface characterization and analysis of textured injection moulded PC-ABS automotive interior components

Reddy¹,

Krishna²,

Sjögren³

et al. 2023

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

Automotive interior components are produced by injection moulding due to its cost effectiveness in mass production. The surfaces of these components are textured to control the appearance and other surface functional properties such as wear and scratch resistance. Key challenges lie in replicating the features of mould tool with high aspect ratio which are influenced by the polymer and large number of process variables. Hence, to control the aesthetic properties, it is important to improve the understanding of the replication of textured surfaces and its relationship with measured gloss. In this study, the surface topography of PC-ABS samples is investigated using coherence scanning interferometry. Replication of two types- coarse and fine grain surface texture are investigated to identify the effects of tool temperature, injection speed and holding pressure. Areal surface parameters are scrutinized for the quantitative characterization and discrimination of study samples surface topographies. The correlations between process parameters, measured gloss and areal surface parameters are discussed. The results show significant influence of process variables on the replication of surface topography and measured gloss. The grain pattern governed the set of surface parameters selected and the variation in gloss. The process variables are observed to influence different region or distribution of specific surface features represented by surface parameters.

show abstract

Section: Glossmentioning

confidence: 99%

Section: Glossmentioning

confidence: 99%

Surface characterization and analysis of textured injection moulded PC-ABS automotive interior components

Reddy¹,

Krishna²,

Sjögren³

et al. 2023

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

show abstract

“…It is known from literature that measurements obtained in the 60°geometry have a good correlation with the perception of gloss. 3,40,41 This choice removes the inconvenience of the uncorrelated measurement scales corresponding with each angle of incidence (60°, but also 20°and 85°). A single geometry also promotes the use of more advanced optical components, which boosts the precision and imaging quality of instruments.…”

Section: Optical Designmentioning

confidence: 99%

Development of an image-based measurement instrument for gloss characterization

et al. 2022

View full text Add to dashboard Cite

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.

show abstract