Image Contrast Measure as a Gloss Material Descriptor

Thomas, Jean‐Baptiste; Hardeberg, Jon Yngve; Simone, Gabriele

doi:10.1007/978-3-319-56010-6_20

Cited by 8 publications

(18 citation statements)

References 18 publications

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“…However, it has been shown by Anderson and Kim [3] that non-glossy images can also produce similar histograms and image statistics do not fully explain the complex neurophysiological processes of gloss perception (e.g., References [18,32,37]). Other widely studied image metrics that are proposedly related to gloss are contrast [38,39,49,62], sharpness [38,39,49], and coverage area [4,31,38,39] of the highlights. The glossiness of a given material has been demonstrated not to be constant and can vary to a great extent, e.g., across different shapes [39,48,66].…”

Section: Gloss Perceptionmentioning

confidence: 99%

“…The six distinct dimensions of gloss-specular gloss, contrast gloss, distinctness-of-reflected-image gloss, absence-of-bloom gloss, absenceof-surface-texture gloss, and sheen-have been proposed by Hunter [29] back in 1937. Since then, gloss has been accepted as a surface-related quality, and perception of gloss has been studied in the context of surface scattering models [49,62,71]. Various image cues have been proposed to be used by the HVS for gloss perception (for instance, the total area covered by specular reflections, contrast between specular reflections and surrounding areas, the sharpness of the edges of the specular regions [38,39]).…”

Section: Introductionmentioning

confidence: 99%

“…subsurface light transport most of the time. In other words, the studies addressing gloss perception have been traditionally limited to surface reflection and fully opaque media (e.g., References [15,38,39,47,49,53,54,62,64,66,[69][70][71]), while a lot of materials we interact with on a daily basis, are both glossy and light-transmissivewater, glass, marble, or human skin can be named among many. The knowledge about the peculiarities of gloss perception on transparent and translucent materials is very limited.…”

Section: Introductionmentioning

confidence: 99%

“…Do not all these shiny parts evoke a feel of glossiness regardless of their origin? (2) It has been demonstrated that darker objects look glossier than lighter ones [49,62] due to higher contrast between specular and diffusely-reflecting areas (Hunter's contrast gloss [29]). As volume scattering and absorption can impact the contrast between specular and non-specular areas, they might also impact apparent gloss.…”

Section: Introductionmentioning

confidence: 99%

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The Role of Subsurface Scattering in Glossiness Perception

Gigilashvili

Shi

Wang

et al. 2021

ACM Trans. Appl. Percept.

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This study investigates the potential impact of subsurface light transport on gloss perception for the purposes of broadening our understanding of visual appearance in computer graphics applications. Gloss is an important attribute for characterizing material appearance. We hypothesize that subsurface scattering of light impacts the glossiness perception. However, gloss has been traditionally studied as a surface-related quality and the findings in the state-of-the-art are usually based on fully opaque materials, although the visual cues of glossiness can be impacted by light transmission as well. To address this gap and to test our hypothesis, we conducted psychophysical experiments and found that subjects are able to tell the difference in terms of gloss between stimuli that differ in subsurface light transport but have identical surface qualities and object shape. This gives us a clear indication that subsurface light transport contributes to a glossy appearance. Furthermore, we conducted additional experiments and found that the contribution of subsurface scattering to gloss varies across different shapes and levels of surface roughness. We argue that future research on gloss should include transparent and translucent media and to extend the perceptual models currently limited to surface scattering to more general ones inclusive of subsurface light transport.

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Section: Gloss Perceptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Role of Subsurface Scattering in Glossiness Perception

Gigilashvili

Shi

Wang

et al. 2021

ACM Trans. Appl. Percept.

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“…Although the Ward model is probably the most used model in material perception studies with simulated surfaces (e.g. [13,22,25,30,44,49,50,60,61,75,78,81,82,92,98,99,101,104,110]), this model was recently shown to be unable to capture some of the perceptually relevant aspects of the physics of relection [38,39]. Thus, we rendered diferent materials based on a slightly more complex model, characterized by ive parameters [19,37,57].…”

Section: Introductionmentioning

confidence: 99%

Three Perceptual Dimensions for Specular and Diffuse Reflection

Toscani

Guarnera

et al. 2020

ACM Trans. Appl. Percept.

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Previous research investigated the perceptual dimensionality of achromatic relection of opaque surfaces, by using either simple analytic models of relection, or measured relection properties of a limited sample of materials. Here we aim to extend this work to a broader range of simulated materials. In a irst experiment, we used sparse multidimensional scaling techniques to represent a set of rendered stimuli in a perceptual space that is consistent with participants' similarity judgments. Participants were presented with one reference object and four comparisons, rendered with diferent material properties. They were asked to rank the comparisons according to their similarity to the reference, resulting in an eicient collection of a large number of similarity judgments. In order to interpret the space individuated by multidimensional scaling, we ran a second experiment in which observers were asked to rate our experimental stimuli according to a list of 30 adjectives referring to their surface relectance properties. Our results suggest that perception of achromatic relection is based on at least three dimensions, which we labelled łLightnessž, łGlossž and łMetallicityž, in accordance with the rating results. These dimensions are characterized by a relatively simple relationship with the parameters of the physically based rendering model used to generate our stimuli, indicating that they correspond to diferent physical properties of the rendered materials. Speciically, łLightnessž relates to difuse relections, łGlossž to the presence of high contrast sharp specular highlights and łMetallicityž to spread out specular relections.

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Appearance Beyond Colour

Gigilashvili,

Thomas

2023

Fundamentals and Applications of Colour Engineering

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Image Contrast Measure as a Gloss Material Descriptor

Cited by 8 publications

References 18 publications

The Role of Subsurface Scattering in Glossiness Perception

The Role of Subsurface Scattering in Glossiness Perception

Three Perceptual Dimensions for Specular and Diffuse Reflection

Appearance Beyond Colour

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