The respective weights of facial signs on the perception of age and a tired‐look among differently aged Korean men

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Objective To evaluate the capacity of the automatic detection system to accurately grade, from selfie pictures, the severity of eight facial signs in South African men. Methods Selfie pictures (obtained from frontal and back cameras) of 281 South African men differently aged (20–70 years) were obtained and analyzed by an automatic artificial intelligence (AI)‐based automatic grading system. Data were compared with the clinical gradings made by experts and dermatologists. Results In all facial signs, both series of gradings were found highly correlated with, however, different coefficients (0.59–0.95), those of marionette lines and cheek pores being of lower values. No differences were observed between data obtained by frontal and back cameras. With age, in most cases, gradings show up to the 50–59 year age‐class, linear‐like changes. When compared to men of other ancestries, South African men present lower wrinkles/texture, pigmentation, and ptosis/sagging scores till 50–59 years, albeit not much different in the cheek pores sign. The early onset (mean age) of visibility of wrinkles/texture for South African men were (i.e., reaching grade >1) 39 and 45 years for ptosis/sagging. Conclusion This study completes and enlarges the previous works conducted on men of other ancestries by showing some South African specificities and slight differences with men of comparable phototypes (Afro American).

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Objective and automatic grading system of facial signs from smartphones’ pictures in South African men: Validation versus dermatologists and characterization of changes with age

Flament

Jiang²,

Houghton³

et al. 2023

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“…In this context, we focused on sagging, 12 a ptosis of the skin, as a critical factor producing an aged impression of the face. [13][14][15] Since the morphological changes associated with sagging progress similarly with aging in different populations, 16 we hypothesized that sagging could be a useful parameter to evaluate aged facial appearance objectively.…”

Section: Introductionmentioning

confidence: 99%

Perception gap of aged facial appearance; self‐perception is younger than actual status due to angle of viewing

Ezure

2023

Background: Facial morphology changes with aging, resulting in an aged appearance that is a great matter of concern for people. However, it is not clear whether people perceive their own facial appearance accurately, in part because there are few methods to evaluate this. Aim:The aim of this study is firstly to establish an evaluation system for the perception gap of aged facial appearance between the self-perceived status and the actual status, and then to use this evaluation system to quantify the perception gap and to clarify the mechanism of this gap Method: Thirty-six middle-aged female volunteers were first asked to rate their facial aging-related morphology according to a 6-grade set of photos taken at a 45 • angle from the front showing progressive stages of sagging severity, without looking either in a mirror or at photos of themselves (self-or "subjective" perception). Then they were shown photos of their face taken at a 45 • angle from the front, and asked again to rate their sagging grade based on these photos ("objective" rating). In addition, facial photos taken from several angles from the front to the side were evaluated for sagging severity by trained evaluators. Results:This system for analyzing perception gap revealed that the self-perception of aged appearance was significantly younger than the actual situation in three facial areas, namely the cheek, around the eyes and the facial contour, and the gap corresponded to an age difference of as much as 8 years in middle-aged females. Trained evaluators found that the severity of sagging judged from photos taken from a frontal direction was significantly less than in photos of the same subject taken from side angles. This suggests that recognition of sagging is more difficult from the front, which is the direction from which people view their own face in daily life. Indeed, viewing photos taken from the side, a rare viewing angle of one's own face, increased the motivation to improve aged appearance in more than 70% of the subjects in a questionnaire survey. Conclusion:The results suggest that people perceive their own facial appearance as less aged than it actually is. The reason for this appears to be that viewing from the front, the usual viewing angle of one's own face in daily life, results in lower perceived sagging severity, likely due to reduced depth perception.

Evaluating the respective weights of some facial signs on the perceived radiance/glow in differently aged women of six countries

Flament

Ye²,

Mercúrio³

et al. 2021

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Objectives: To evaluate the impact of Facial radiance or Glow on the perception of age (PA) and to assess which facial signs most influence PA. Material and Methods:The faces of 1058 differently aged women (18-80 years) of six different ethnicities/countries (China, Japan, Korea, India, South Africa, and Brazil) were photographed under standard conditions. These allowed to focus on 20 different facial signs that were further graded by experts, using referential Atlases dedicated to facial aging. In each of the six countries, 100 local women were recruited as naïve panels to express their perceptions on Glow and Age on each fullface photograph (blind coded) of the local studied woman. Results: A decreased Glow/Radiance appears clearly associated with an increased perceived age in all studied subjects, especially among Chinese, Japanese, and South African women. With regard facial signs, Skin texture (Wrinkles of all kinds), Ptosis/ Sagging, and Pigmentation signs prevail in almost all women at the exception of South African women where Pigmentation signs and Cheek skin pores largely predominate in the perception of both Glow and PA. Pigmentation signs are of a very high weight among Chinese and Japanese women. Conclusion:Despite some collective agreements, the present study shows some specificities within the women of the six ethnicities/countries. PA, a core index of antiaging strategies, goes along with facial Glow in almost all studied women. The duller the facial skin, the older it is perceived.