The dead skin layer becomes thicker if the amount of moisture on the skin surface is low, and its elasticity and vitality decreased, if not cared for properly. Skin also becomes roughen and dark, which are the signs of skin aging.
It is to measure the amount of moisture on the skin surface, contact the moisture sensor to the skin surface and measure the changes of the capacitance of the precision capacitor, which differs depending on the moisture distribution.
Moisture
Oilness
The excess oil results from the sebaceous glands in the skin producing the sebum. Those who have this condition usually have shiny skin and large pores.
The captured oiliness images and result of detected images:
The detected oiliness region of greater gray intensity value than other regions detected by using the cross mask. The detected region is selected with top 2% brightness pixels.
Wrinkle
Wrinkles are creases, folds, or ridges in the skin. Through exposure to ultraviolet rays, the elasticity of the skin is impoverished or elastin and collagen are degenerated, which makes skin dry and leads to an increase of wrinkle. (Hyaluronan has a strong nature to absorb water and it volumes up to several times if the water is kept. On the other hand, however, if the water is lost, its bulk decreases with the ratio of square root, cube root, and then wrinkle is created naturally on the skin).
The captured wrinkle images and result of detected images:
Like pore, a wrinkle also looks relatively darker than surrounding areas. So the dark area is first detected and then body hair is removed in a similar way. As the significant components for the wrinkle are length and depth, it is considered as wrinkle only if a length is more than a fixed value. Value of S channel of HLS color space which is similar to real depth is used. For each area finally defined as wrinkle, the length of wrinkle multiplies the average depth value, and the wrinkle index is calculated by dividing it image size value.
Pore
The pore is tiny little openings on the layer of the skin where the sebaceous glands are produced by the body’s natural oil. Size of the pore may look bigger when; 1) amount of sebum on skin surface secreting from sebaceous glands connected with hair follicle increases, 2) sebum and impurities are piled up inside of pore, or 3) pore wall becomes sagged and stretched by the decrease of elasticity due to skin aging.
The captured pore images and result of detected images:
When it comes to the brightness of the image, pore looks relatively darker than surroundings and has the round shape. First, the dark area is detected, then body hair (similar dark part) is removed from the detected region. Morphology opening method is used in order to separate detected pore which is small, sagged or connected. Since depth and size are important for the value of the pore, the pore index is calculated by multiplying the two values and then dividing it by the size of the image per each pixel.
Sebum
Sebum is covered by the sebaceous gland and connected to the pore. It plays a role as a natural moisturizing cream mixed with sweat in order to prevent excessive loss of moisture. Proper sebum, therefore, is necessary to make facial skin moisturized and to keep skin healthy as it contains mineral water, the nutrition of resident virus who eats extra impurities on our skin.
The sebum tape images and result of detected images:
Sebum smeared in oil paper changes the color of paper to stronger scarlet than the original, therefore, we calculate the value using the color difference of the red areas.
Keratin
Keratin is a class of fibrous proteins, and your outer layer of skin is mainly composed of this protein. Sometimes your body malfunctions when producing this protein, and it builds up under a hair follicle near the top layer of skin; it then produces a plug that rises to the surface. These plugs manifest as small, rough dots, often white or red, and the condition is called keratosis pilaris.
The captured Keratin images and result of detected images:
Making use of keratin tape on the skin’s surface, dead skin cells are detected and measured based on the amount of keratin captured on the image from the tape
Spots
기미·잡티는 햇빛에 노출되거나, 인위적으로 태닝 기계를 사용할 때 피부의 일부 영역에서 평소보다 더 많은 멜라닌을 생성하여 발생합니다. 이는 피부 상태와도 관련이 있으며, 간혹 약물의 부작용으로도 발생할 수 있습니다. 기미 또는 잡티의 경우는 밝기 값으로 계산됩니다. 어두움의 정도에 따라 첫 번째 가중치를 부여하고, 주변에 대한 어두움 정도에 두 번째 가중치를 부여합니다. 인덱스는 둘을 결합한 다음 이미지 크기 값으로 나누어 계산합니다.
Pigmentation
The skin may look darker when melanin pigment is excessively produced or lighter when less produced. This is called “pigmentation” and caused by ultraviolet rays, skin infections or scars.
The captured pigmentation images and result of detected images:
The darker region is detected by brightness value. Through detection process, only the melanin region (brown) is left. Body hair region is also detected and removed from the melanin region. The numerical value for pigmentation is computed by brightness value. It gives its first weighted value based on the degree of darkness and second weighted value on the degree of darkness against surrounding. The spot index is calculated by combining the two and then dividing it by image size value.
눈 밑이 어둡게 보이는 증상을 통칭하는 것으로, 눈 밑부분이 그늘진 것처럼 보이는 상태를 말합니다. 주로 눈 주위에 오랜 기간 습으로 인한 멜라닌 색소가 침착되거나, 눈 밑 피부가 얇아서 피하정맥이 드러나 보이는 경우, 피로나 스트레스로 눈 주위의 혈액 순환이 되지 않아 심해집니다. 사람의 얼굴을 피곤하고 칙칙하게 보이게 하는 요소로, 대량의 다크서클 데이터로 훈련된 AI 모델을 사용하여 주어진 이미지에서 다크서클을 예측합니다.
Dark Circles
Radiance
피부 광채는 충분한 휴식과 영양으로 건강한 피부에서 드러나는 따뜻한 빛입니다. 피부 세포의 반사율과 피부 자체의 매끄러움, 균일함 등에 영향을 받습니다. VSL을 통해 얼굴의 광채를 감지하고 빛나는 부분을 표시합니다.
Redness
From sunburn to an allergic reaction, there are many situations in which your skin can become red or irritated. It may be because extra blood rushes to the skin’s surface to fight off irritants and encourage healing. Skin redness can also come from exertion, such as after a heart-pounding exercise session.
The captured redness images and result of detected images:
The redness region is detected by color difference method.The detected region’s intensity value is different from the surroundings in R and G color channel of RGB image. The redness index is calculated by the difference of two color channels and combination of constant value and then dividing it by image size value.
번들거림
피부 표면에 나오는 지방을 피지라 하고, 기름의 성분을 하고 있는 피지는 피부 내의 피지선에서 분비됩니다. 피지막은 피부의 건조를 막는 동시에 수분을 끌어올려 알칼리를 중화하고 유해 물질의 침입을 막는 동시에, 피부 노화를 지연시킵니다. 그러나 피지 분비가 과도하게 나타날 경우 얼굴의 피부가 번들거리게 되는데, 대량의 데이터를 기반으로 훈련된 AI 알고리즘을 사용하여 주어진 이미지에서 번들거리는 부분을 확인합니다.
Dullness
피부의 칙칙함은 피부 표면에 각질 세포가 과도하게 쌓인 결과입니다. 건조함, 손상 세포의 누적 또는 세포 회전율의 둔화는 피부의 광채를 잃게 하며, 대량의 데이터를 통해 학습된 AI 알고리즘을 통하여 광채가 없고 피부 본연의 톤과는 다르게 나타나는 칙칙함을 분별합니다.
Elasticity
Through exposure to ultraviolet rays, the elasticity of the skin is impoverished or elastin and collagen are degenerated, which makes skin dry and leads to an increase of wrinkle.
The captured fine wrinkle images and of detected images
Skin Tone
Through exposure to ultraviolet rays, the elasticity of the skin is impoverished or elastin and collagen are degenerated, which makes skin dry and leads to an increase of wrinkle.
The captured fine wrinkle images and of detected images
