Statistical correlates of perceived gloss in natural images
Authors: Wiebel, C.B., Toscani, M. and Gegenfurtner, K.R.
Journal: Vision Research
Volume: 115
Pages: 175-187
eISSN: 1878-5646
ISSN: 0042-6989
DOI: 10.1016/j.visres.2015.04.010
Abstract:It is currently debated whether the perception of gloss is linked to the statistical parameters of the retinal image. In particular, it has been suggested that gloss is highly correlated with the skewness of the luminance histogram. However, other psychophysical work with artificial stimuli has shown that skewness alone is not enough to induce the perception of gloss. Here, we analyzed many images of natural surfaces to search for potential statistical correlates of perceived gloss. We found that skewness indeed correlates with gloss when using rendered stimuli, but that the standard deviation, a measure of contrast, correlates better with perceived gloss when using photographs of natural surfaces. We verified the important role of contrast by manipulating skewness and contrast within images. Changing the contrast in images significantly modulates perceived gloss, but manipulating the skewness of the luminance histogram had only a small effect.
Source: Scopus
Statistical correlates of perceived gloss in natural images.
Authors: Wiebel, C.B., Toscani, M. and Gegenfurtner, K.R.
Journal: Vision Res
Volume: 115
Issue: Pt B
Pages: 175-187
eISSN: 1878-5646
DOI: 10.1016/j.visres.2015.04.010
Abstract:It is currently debated whether the perception of gloss is linked to the statistical parameters of the retinal image. In particular, it has been suggested that gloss is highly correlated with the skewness of the luminance histogram. However, other psychophysical work with artificial stimuli has shown that skewness alone is not enough to induce the perception of gloss. Here, we analyzed many images of natural surfaces to search for potential statistical correlates of perceived gloss. We found that skewness indeed correlates with gloss when using rendered stimuli, but that the standard deviation, a measure of contrast, correlates better with perceived gloss when using photographs of natural surfaces. We verified the important role of contrast by manipulating skewness and contrast within images. Changing the contrast in images significantly modulates perceived gloss, but manipulating the skewness of the luminance histogram had only a small effect.
Source: PubMed
Statistical correlates of perceived gloss in natural images
Authors: Wiebel, C.B., Toscani, M. and Gegenfurtner, K.R.
Journal: VISION RESEARCH
Volume: 115
Pages: 175-187
eISSN: 1878-5646
ISSN: 0042-6989
DOI: 10.1016/j.visres.2015.04.010
Source: Web of Science (Lite)
Statistical correlates of perceived gloss in natural images.
Authors: Wiebel, C.B., Toscani, M. and Gegenfurtner, K.R.
Journal: Vision research
Volume: 115
Issue: Pt B
Pages: 175-187
eISSN: 1878-5646
ISSN: 0042-6989
DOI: 10.1016/j.visres.2015.04.010
Abstract:It is currently debated whether the perception of gloss is linked to the statistical parameters of the retinal image. In particular, it has been suggested that gloss is highly correlated with the skewness of the luminance histogram. However, other psychophysical work with artificial stimuli has shown that skewness alone is not enough to induce the perception of gloss. Here, we analyzed many images of natural surfaces to search for potential statistical correlates of perceived gloss. We found that skewness indeed correlates with gloss when using rendered stimuli, but that the standard deviation, a measure of contrast, correlates better with perceived gloss when using photographs of natural surfaces. We verified the important role of contrast by manipulating skewness and contrast within images. Changing the contrast in images significantly modulates perceived gloss, but manipulating the skewness of the luminance histogram had only a small effect.
Source: Europe PubMed Central