Color criteria of facial skin tone judgment

Shimakura, Hitomi; Sakata, Kimio

doi:10.1016/j.visres.2022.108011

Cited by 4 publications

(3 citation statements)

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“…Consequently, differences in the perception of fine details might have been reflected in the evaluations. Additionally, the results indicate that the recognition of a face as a face [50] may not only be influenced by skin tone [51] and brightness [52,53] but also affect texture perception. Therefore, even simply flipping the face upside down could change the perception of moisture or texture.…”

Section: Discussionmentioning

confidence: 92%

Visual cues for moisture perception of facial skin: Enhancing high-frequency components of skin lightness increases perceived dryness

Hasegawa,

Tamura,

Kanematsu

et al. 2024

Preprint

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Facial skin texture provides crucial visual cues that reflect an individual’s impressions and health conditions. In this study, we focused on the texture attribute of “moisture” and investigated which visual cues influenced skin moisture perception. The stimuli consisted of images from three facial areas (the whole face, cheek, and eyebrow areas) with and without makeup under two lighting directions. The participants rated the presented stimuli on the three texture attributes (moisture, glossiness, and attractiveness) using a five-point scale. The results from Experiment 1 revealed correlations between the ratings and histogram statistics of each channel in the CIELAB color space, with variations depending on the conditions and facial regions. A negative correlation was observed between the cheek moisture perception and the variance in theL*channel. We subsequently obtained similar ratings by enhancing the high-frequency components of skin lightness for artificially dried stimuli (Experiment 2) and for images depicting different skin conditions due to various types of makeup (Experiment 3). Both experiments confirmed a decrease in moisture and attractiveness and an increase in glossiness; these were correlated with the degree of artificial drying. These findings indicated that the high-frequency components of skin lightness could be visual cues for determining the perceived dryness.

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Section: Discussionmentioning

confidence: 92%

Visual cues for moisture perception of facial skin: Enhancing high-frequency components of skin lightness increases perceived dryness

Hasegawa,

Tamura,

Kanematsu

et al. 2024

Preprint

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“…The criteria for judging human complexion are thought to be based on skin color and conditions that humans typically remember ( Hasantash, Lafer-Sousa, Afraz, & Conway, 2019 ; Shimakura & Sakata, 2022 ). The relationship between color and emotion is known to influence human facial color memory.…”

Section: Introductionmentioning

confidence: 99%

Facial expressions affect the memory of facial colors

Hasegawa,

Tamura,

Nakauchi

et al. 2024

Journal of Vision

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Facial color influences the perception of facial expressions, and emotional expressions bias how facial color is remembered. However, it remains unclear whether facial expressions affect daily facial color memory. The memory color effect demonstrates that knowledge about typical colors affects the perception of the actual color of given objects. To investigate the effect of facial color memory, we examined whether the memory color effect for faces varies depending on facial expression. We calculated the subjective achromatic point of the facial expression image stimulus and compared the degree to which it was shifted from the actual achromatic point between facial expression conditions. We hypothesized that if the memory of facial color is influenced by the facial expression color (e.g., anger is a warm color, fear is a cold color), then the subjective achromatic point would vary with facial expression. In Experiment 1, we recruited 13 participants who adjusted the color of facial expression stimuli (anger, neutral, and fear) and a banana stimulus to be achromatic. No significant differences in the subjective achromatic point between facial expressions were observed. Subsequently, we conducted Experiment 2 with 23 participants because Experiment 1 did not account for the sensitivity to color changes on the face; humans perceive greater color differences in faces than in non-faces. Participants selected which facial color they believed the expression stimulus appeared to be, choosing one of two options provided to them. The results indicated that the subjective achromatic points of anger and fear faces significantly shifted toward the opposite color direction compared with neutral faces in the brief presentation condition. This research suggests that the memory color of faces differs depending on facial expressions and supports the idea that the perception of emotional expressions can bias facial color memory.

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“…Color or skin tone is a valuable source of information in face processing. Recently, Shimakura and Sakata (2022) demonstrated that people unconsciously memorize and judge the facial skin tones they encounter in their daily life based on different processes than the perception of color in uniform patch of the same size as the face images. Age produces obvious changes in skin texture, such as wrinkles caused by progressive dehydration and the loss of skin elasticity, but other subtler variations also affect skin tone.…”

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confidence: 99%