Measurements of aging effects of facial color distribution and applications.

Shibatani, Jun-ichi; Masano, M.; Ishida, T.; Shinoda, M.; Yuasa, Shuji

doi:10.5107/sccj.19.48

Cited by 3 publications

(7 citation statements)

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“…The Japanese skin becomes dark and yellow with age progression. These results corroborate findings of the same pattern of age-related changes for Chinese (5) and Japanese (6). The change from high to low lightness increases skin contrast accentuating the visibility of skin topography irregularities.…”

Section: Central Momentsupporting

confidence: 89%

Image statistics on the age perception of human skin

Arce-Lopera

Igarashi

Nakao

et al. 2012

Skin Research and Technology

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Section: Central Momentsupporting

confidence: 89%

Image statistics on the age perception of human skin

Arce-Lopera

Igarashi

Nakao

et al. 2012

Skin Research and Technology

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“…In particular, the decrease in lightness was remarkable in the region along the cheekbone, from the temple to the center of the cheek. Many studies have shown that the lightness of facial skin decreases with age, but this study demonstrates for the first time the detailed features of each site. Furthermore, we analyzed the seasonal changes of melanin distribution in the face area.…”

Section: Discussionmentioning

confidence: 68%

“…4,5 Furthermore, it may allow researchers in the cosmetics field to formulate skin care and makeup cosmetics that are adapted to site-related skin characteristics. 6,7 Contact-type spectrophotometers are reliable devices with high accuracy and have been commonly used to evaluate skin color in various fields. [8][9][10][11] However, they are not suitable for covering a wide area because of their small probe, and they require a substantial evaluation time that depends on the number of measurements.…”

Section: Introductionmentioning

confidence: 99%

Development of an image evaluation method for skin color distribution in facial images and its application: Aging effects and seasonal changes of facial color distribution

Kikuchi

Mizokami

Egawa

et al. 2020

Color Research & Application

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In this article, we present an evaluation method for the skin color distribution in the face area. Unlike previous methods that extract a specific area, our method subdivides the entire face into small regions and analyzes detailed, perframe textures. Our evaluation method for skin color distribution is based on facial feature points and includes segmentation that takes into account the facial skeleton and muscle orientation. The use of facial feature points enables a comparison at relatively equal positions on the face without depending on the shape or size of the individual's face. Our evaluation method is versatile, and as an application, we clarified age-specific features and seasonal variations of facial color distribution. As a result of applying this evaluation method to the facial images of women aged 20 to 78 years, we confirmed that the lightness of the face decreased as age increased. In particular, the decrease in lightness was remarkable in the region along the cheekbone, from the temple to the center of the cheek. Furthermore, we analyzed the seasonal changes of melanin distribution in the face area. This showed that the melanin index increased particularly in the cheekbone area in the summer when the influence of ultraviolet rays became large. Our novel methodology and the data presented in this article will be useful in various fields, such as dermatology, cosmetics, and computer vision. K E Y W O R D Sface, image analysis, melanin, seasonal changes, skin color distribution

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“…This is hardly new and has been measured previously (9). A darker forehead has also been observed in a Japanese population living in Japan (49). Data reported on age‐related changes in Chinese groups living in China (45, 46) are also in agreement with our results.…”

Section: Discussionmentioning

confidence: 81%

“…Both tested areas can be considered photoexposed areas, but the level of ultraviolet (UV) light received is somewhat different, measurements showing that the cheek may receive more UV than the forehead, mainly because of the presence of hat or hair (50). This difference has also been observed in other conditions in a Japanese population (49).…”

Section: Discussionmentioning

confidence: 96%