WO2015076617A1 - 계량화 수단을 이용한 피부 나이 예측 장치 및 방법 - Google Patents
계량화 수단을 이용한 피부 나이 예측 장치 및 방법 Download PDFInfo
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- WO2015076617A1 WO2015076617A1 PCT/KR2014/011271 KR2014011271W WO2015076617A1 WO 2015076617 A1 WO2015076617 A1 WO 2015076617A1 KR 2014011271 W KR2014011271 W KR 2014011271W WO 2015076617 A1 WO2015076617 A1 WO 2015076617A1
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Z—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS, NOT OTHERWISE PROVIDED FOR
- G16Z99/00—Subject matter not provided for in other main groups of this subclass
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
- G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
- G06F7/483—Computations with numbers represented by a non-linear combination of denominational numbers, e.g. rational numbers, logarithmic number system or floating-point numbers
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
- G16H50/30—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for calculating health indices; for individual health risk assessment
Definitions
- the present invention relates to an apparatus and method for predicting skin age, and more particularly, to an apparatus and method for predicting skin age of a person using statistical quantification means.
- Human skin is aging by the passage of time and by environmental factors. Since the aging of human skin proceeds with individual deviations, even those with the same biological age may have different degrees of aging of the skin.
- the human skin condition can be judged by the enlarged visual characteristics and the length, width and thickness of the skin wrinkles. Based on these visual features and personal experience, experts infer the skin condition using the abstract concept of skin age. Skin age is more affected by the subject's apparent skin characteristics and the extent of skin aging than with the biological age of the subject.
- the skin age may be determined differently according to the subjective feeling of the person who observes the skin of the subject, and an objective criterion for determining the skin age is not established, which makes it difficult to quantify the skin age.
- relative superiority such as which skin is younger, was relatively easy to assess, but objective and quantitative assessments such as how old the skin of each subject was were There was a difficulty that could not be easily judged without analysis.
- Another object of the present invention is to provide an apparatus and method capable of quantifying and evaluating the skin age of a person without the analysis of an expert.
- the skin age prediction method includes calculating a skin age grade by substituting at least one related factor representing a skin condition of a subject into a skin age prediction equation, wherein the skin age prediction equation is a regression constant and It consists of a linear combination of at least one variable term each corresponding to said at least one related factor.
- the method may further include measuring or receiving the at least one related factor.
- the method may further include determining a skin age of the subject from the calculated skin age grade.
- the step of determining the skin age of the subject may comprise: scaling the calculated skin age grade according to a predetermined method; And calculating the skin age of the subject as the scaling result.
- the related factors include the pigmented area and the area around the wrinkles of the subject.
- the skin age prediction formula may correlate a plurality of samples to determine the at least one related factor among a plurality of factors indicative of a human skin condition, and multiplex the plurality of samples for the determined related factors.
- Regression analysis is used to determine the regression constant and the at least one variable term and is determined by linear combination of the determined regression constant and the at least one variable term.
- the at least one variable term is expressed as a product of a variable corresponding to any one of the pigment area and the periphery wrinkle area and a beta value corresponding to the variable, respectively.
- the skin age prediction equation is, Wherein Q19 is the skin age grade, X1 is a variable corresponding to the pigment area, X2 is a variable corresponding to the area around the eye area, 7.414 is the regression constant, and -0.0000558 and The -0.0000576 is a beta value corresponding to the X1 and the X2, respectively.
- Skin age prediction apparatus includes a storage unit for storing the skin age prediction formula; And a processor for substituting at least one related factor indicative of the subject's skin condition to the stored skin age prediction equation, the skin age rating being a regression constant and the at least one related factor, respectively. It consists of a linear combination of corresponding at least one variable term.
- the apparatus may further include a measuring unit measuring the at least one related factor.
- the skin age of a person can be easily quantified and evaluated.
- 1 is a diagram showing a correlation between the skin age of a person and the actual age.
- 2 is a bar diagram of samples having the same average actual age classified into different groups according to skin age.
- 3 is a bar chart showing skin age of samples divided into five grades by expert evaluation.
- FIG. 4 is a table illustrating a result of correlation analysis for determining a related factor according to an embodiment of the present invention.
- 5 is a table showing the results of multiple regression analysis showing the effect of the association factor on the skin age according to an embodiment of the present invention.
- FIG. 6 is a flowchart illustrating a method of determining a skin age prediction equation according to an embodiment of the present invention.
- FIG. 7 is a flowchart illustrating a method for predicting skin age according to an embodiment of the present invention.
- FIG. 1 is a diagram showing a correlation between the skin age of a person and the actual age.
- the actual age and skin age of the specimens (people who participated in the experiment or measurement) are plotted on a two-dimensional plane.
- the skin age of the samples was measured through visual evaluation and questionnaire evaluation of experts.
- the skin age of the specimens generally increases as the actual age increases (11). Nevertheless, as seen in the specimens located at the bottom right of the figure 10 or the specimens located at the top left of the figure 10, the skin age of the specimens is not necessarily proportional to the actual age. This is because the skin age of humans has both endogenous factors, which are natural aging according to the passage of time, and environmental factors, which are aging due to skin exposure environment and skin care habits.
- the skin age can be diagnosed to some extent only through visual evaluation of the expert, and even the judgment result may be different according to the subjective feeling of the expert.
- the present invention by providing a means for quantifying and predicting the skin age of a person objectively, it is possible to predict the skin age more simply and objectively.
- FIG. 2 is a bar diagram of samples having the same average actual age classified into different groups according to skin age. Referring to FIG. 2, samples having the same average actual age are shown in the bar graph 20 divided into a group of high skin age (H) and a group of low skin age (L).
- H high skin age
- L low skin age
- the samples having the same mean actual age are divided into different groups according to skin age. Classified. Then, various factors related to the skin condition of the specimens were measured, and the correlation between the measured factors and the skin age was analyzed to determine related factors directly related to the skin age.
- correlation analysis which is a general statistical means, is used. As shown in FIG. 3, since the influence of endogenous factors may be minimized by determining a related factor in a sample having the same average actual age, the related factor may be determined by focusing more on environmental factors.
- FIG. 3 is a bar chart showing skin age of samples divided into five grades by expert evaluation. Referring to FIG. 3, the skin age of the specimens is shown by a bar graph 30 classified by experts to the 5th grade.
- the group (A) rated as the first grade is a group in which the skin age is evaluated to be less than 35 years old by expert evaluation.
- Group (B) rated as Grade 2 is a group in which skin age was assessed between 35 and 41 years old by expert evaluation.
- Group (C) rated at Grade 3 is a group of skin ages between 42 and 48 years old, assessed by expert assessment.
- Group D, rated as Grade 4 is a group whose skin age ranges between 49 and 55 years old by expert assessment.
- Group (E) rated as Grade 5 is a group whose skin age is estimated to be 56 years or older by expert evaluation.
- the present invention may classify the skin age of the samples by different classification criteria.
- the present invention can classify specimens into ten groups of skin age 1 to 100 years old, of equal intervals or of the same size.
- the average actual age of the samples is not required to be the same, and experts evaluate the skin age of the samples based only on the observed skin condition.
- One-way analysis of variance of the skin age evaluation results of experts showed no significant difference, thereby securing objectivity of the evaluation results.
- the table 40 includes factors 41 representing skin conditions and their correlation analysis results.
- n represents the total number of samples
- r represents the correlation coefficient calculated according to the correlation analysis method
- p-value represents the significant probability
- Q19 represents the expert evaluation result.
- Q19 is an expert evaluation result, and may correspond to a value of 1 to 5, respectively, when the skin age is 1 to 5 levels (that is, Q19 of group A of FIG. 3 is 1).
- * indicates significance at the 0.05 level in the 2-tailed analysis
- ** indicates significance at the 0.01 level in the 2-tailed analysis. It is present.
- the table 40 in FIG. 4 shows the correlation between the factors 41 and Q19.
- the correlation coefficient r is a value between -1 and 1 indicating how much linear relationship the factors 41 and Q19 have.
- r ⁇ -0.7 means that the factor and Q19 have a strong negative linear relationship
- -0.7 ⁇ r ⁇ -0.3 means that the factor and Q19 have some distinct negative linear relationship
- -0.3 ⁇ r ⁇ -0.1 means that the factor and Q19 have a weak negative linear relationship
- 0.7 ⁇ r means that the factor and Q19 have a strong negative linear relationship
- 0.3 ⁇ r ⁇ 0.7 means that the factor and Q19 have some distinct negative linear relationship
- 0.1 ⁇ r ⁇ 0.3 means that the factor and Q19 have a strong negative linear relationship.
- Q19 means having a weak negative linear relationship. If -0.1 ⁇ r ⁇ 0.1, the factor and Q19 are considered not to have a significant linear relationship (N.S).
- the correlation coefficient (r) between the wrinkle area of the eye and Q19 is -0.532 (significance level 0.05), and the significance probability at that time is 0.011 (43).
- the correlation coefficient r between the pigment area and Q19 is -0.561 (significance level 0.01), and the significance probability at that time is 0.007 (44).
- Factors (corrugated wrinkle area and pigment area) analyzed to correlate with Q19 become the relevant factor in the present invention.
- the related factors determined herein are exemplary, and other factors (eg, skin texture) not described herein may be added as the related factors.
- the measured values of the factors 41 used in the correlation analysis may not be a value indicating an absolute number, content or area.
- the measured values of the factors 41 may be relative values obtained by scaling an absolute number, content or area, and may be a processed value proportional to the absolute number, content or area.
- the measured value of the wrinkle area of the eye used in the present embodiment is 30, this does not mean an absolute area such as 30 mm 2 or 30 cm 2, but means that the size of the area is 30 as a relative size.
- the measured value 30 may mean 10 mm 2.
- the measured value is proportional to the absolute area, when the measured value is doubled from 30 to 60, it means that the absolute area is also doubled.
- a predetermined skin condition measuring means may be used to measure the area around the wrinkles and the pigment area.
- a skin touch system STS
- the skin touch system uses two parts, the AP scope and the AP sensor, to measure skin condition.
- the AP scope is a magnification scope that can enlarge the subject's skin and is equipped with 30 magnification lenses, and it is a device that can acquire the skin image in two types of normal mode and polarization mode by selecting the left lever. .
- the wrinkle area around the eye is measured by a method of calculating the area of the number of wrinkles through a conversion operation between the 2D image and the 3D image after sufficiently magnifying the wrinkle area, and calculating the total wrinkle area accordingly.
- a method of calculating the area of the number of wrinkles through a conversion operation between the 2D image and the 3D image after sufficiently magnifying the wrinkle area and calculating the total wrinkle area accordingly.
- the pigment area may be measured by photographing the skin surface in a polarization mode, separating the pigmentation region from the photographed skin image, and calculating the area.
- FIG. 5 is a table showing the results of multiple regression analysis showing the effect of the association factor on the skin age according to an embodiment of the present invention.
- the table 50 shows the related factors (pigment area, eye area wrinkle area) and their multiple regression analysis results.
- n represents the total number of samples
- constant is the regression constant of the regression equation (or Y-intercept of the regression graph) representing the linear relationship between the related factor and Q19
- beta is the beta value of the regression equation.
- p-value is the significant probability of the simple regression analysis
- R 2 is the decision coefficient of the regression equation (or the decision coefficient of the regression graph).
- the determination coefficient R 2 is a value representing the rate of change between the related factors and Q19, and the larger the determination coefficient, the closer the regression relationship between the related factors and Q19 becomes to a linear relationship.
- the regression analysis showed that the pigment area and the wrinkle area of the eye area had a significant level of influence on Q19, and the skin age prediction formula (or multiplexed) was constructed according to the analysis result of the table 50.
- Regression analysis model is shown in Equation 1.
- Q19 is the skin age by expert evaluation
- X1 is the measured pigment area value
- X2 is the measured eye area area of wrinkles
- 7.414 is the determined regression constant value
- -0.0000558 and -0.0000576 are the pigment area and Beta value of the area around the wrinkles of the eye.
- the measured pigment area and the measured eye area wrinkle area values are substituted into the variables X1 and X2 of the skin age prediction equation (Equation 1), respectively.
- the substitution result is calculated as Q19, and the calculated value means the same value as the skin age evaluated by the expert within the statistical significance level. In this way, it is possible to produce the same result value within the significance level as the expert's evaluation, even without the expert evaluation.
- the value of Q19 calculated by Equation 1 is also generally between 1 and 5.
- the calculated Q19 value is 2
- the subject's skin age belongs to the first grade and corresponds to the skin age of 35 to 41 years old.
- the calculated Q19 value may be scaled to calculate a specific skin age of the subject. For example, if the calculated Q19 value is 2, it means that the subject's skin age belongs to the first grade and the skin age is between 35 and 41 years old. In this case, the interval of each grade is 7, so if the upper limit of grade 1 is subtracted 1/2 of the grade interval (ie, 31.5) as a representative value of grade 1 (ie, 31.5), the calculated Q19 is subtracted from 1. When the value is scaled 7 times and the representative value of the 1st grade is added as a reference value (7 x (2-1) + 31.5), the skin age 38.5 years is calculated corresponding to the value 2 of Q19. The calculated age of 38.5 is the median of Grade 2.
- a scaling method is exemplary, and various scaling methods different from those described herein may be applied within the scope of the present invention.
- the configuration of the present invention as described above, it is possible to predict the skin age of a person by using a statistical measurement means, even without expert analysis of the expert can easily quantify and evaluate the skin age of a person. Further, by predicting the skin age of the subject through the proposed method, it is possible to obtain basic information for suggesting a cosmetic suitable for the skin of the subject.
- the predictive equation determination method includes steps S110 to S130.
- step S110 the correlation is analyzed to determine a related factor.
- various factor values are measured from the skin condition of the samples, and the measured values and the skin age of the samples are correlated to determine related factors that affect the skin age.
- Specific methods for determining the related factors are as described with reference to FIGS. 4 to 5, and in embodiments of the present invention, the related factors were analyzed by the pigment area and the wrinkle area of the eye area.
- step S120 multiple regression analysis of the samples for the determined association factors, to determine the extent of the effect of the association factors on the skin age in detail.
- the multiple regression analysis method for the related factors is the same as described with reference to FIGS. 4 to 5.
- step S130 the skin age prediction equation is determined according to the result of the multiple regression analysis.
- the determined skin age prediction equation is as described in Equation 1, and the prediction equation is constructed by a linear combination of the regression constant according to the multiple regression analysis and the measured pigment area and the periorbital wrinkle area multiplied with each beta value.
- the skin age prediction method includes steps S210 to S230.
- the skin age prediction method may be performed by at least one computing device.
- the computing device may include a storage unit that stores a skin age prediction equation or an algorithm representing the prediction equation, and a processor that calculates skin age by substituting the measured values of related factors into the prediction equation or algorithm.
- the computing device may further include a measuring unit measuring related factors of the subject. Since a general computing device for storing data and driving a predetermined algorithm with reference to the stored data is well known in the art, a detailed description thereof will be omitted herein.
- step S210 the related factors of the subject are measured.
- the related factor may be a pigment area and an eye wrinkle area.
- the skin age grade is calculated by substituting the measured factor values into the skin age prediction equation.
- the pigment area is substituted for X1 in Equation 1 and the eye wrinkle area is substituted for X2 in Equation 1, and as a result of substitution, the Q19 value becomes the skin age grade of the subject.
- the calculated skin age grade may be a predetermined grade that indicates the subject's skin age level, or may be a direct quantification of the subject's skin age.
- the specific skin age of the subject is determined from the calculated skin age grade.
- the skin age prediction method may determine the skin age of the subject by scaling the calculated skin age grade according to a predetermined method. Specific methods or examples of scaling skin age grades are the same as described in FIG. 5.
- the skin age prediction method of the present invention as described above, it is possible to predict the skin age of a person by using a statistical measurement means, and even without expert analysis of the skin age can be easily quantified and evaluated. Further, by predicting the skin age of the subject through the proposed method, it is possible to obtain basic information for suggesting a cosmetic suitable for the skin of the subject.
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Claims (10)
- 대상자의 피부 상태를 나타내는 적어도 하나의 유관 팩터들을 피부 나이 예측식에 대입하여 피부 나이 등급을 산출하는 단계를 포함하고,상기 피부 나이 예측식은 회귀 상수 및 상기 적어도 하나의 유관 팩터들에 각각 대응하는 적어도 하나의 변수항들의 선형 조합으로써 구성되는, 피부 나이 예측 방법.
- 제 1 항에 있어서,상기 적어도 하나의 유관 팩터들을 측정하거나 입력받는 단계를 더 포함하는, 피부 나이 예측 방법.
- 제 1 항에 있어서,상기 유관 팩터들은 상기 대상자의 색소 면적 및 눈가 주름 면적을 포함하는, 피부 나이 예측 방법.
- 제 3 항에 있어서,상기 피부 나이 예측식은,복수의 표본들을 상관 분석하여 사람의 피부 상태를 나타내는 복수의 팩터들 중 상기 적어도 하나의 유관 팩터들을 결정하고, 상기 결정된 유관 팩터들에 대해 상기 복수의 표본들을 다중 회귀 분석하여 상기 회귀 상수 및 상기 적어도 하나의 변수항들을 결정하고, 상기 결정된 회귀 상수 및 적어도 하나의 변수항들을 선형 조합하여 결정되는, 피부 나이 예측 방법.
- 제 4 항에 있어서,상기 적어도 하나의 변수항들은, 각각 상기 색소 면적 및 눈가 주름 면적 중 어느 하나에 대응하는 변수와 상기 변수에 대응하는 베타 값의 곱으로 표현되는, 피부 나이 예측 방법.
- 제 1 항에 있어서,상기 산출된 피부 나이 등급으로부터 상기 대상자의 피부 나이를 결정하는 단계를 더 포함하는, 피부 나이 예측 방법.
- 제 7 항에 있어서,상기 대상자의 피부 나이를 결정하는 단계는,상기 산출된 피부 나이 등급을 미리 결정된 방법에 따라 스케일링하는 단계; 및상기 스케일링 결과로서 상기 대상자의 피부 나이를 산출하는 단계를 포함하는, 피부 나이 예측 방법.
- 피부 나이 예측식을 저장하는 저장부; 및대상자의 피부 상태를 나타내는 적어도 하나의 유관 팩터들을 상기 저장된 피부 나이 예측식에 대입하여 피부 나이 등급을 산출하는 프로세서를 포함하고,상기 피부 나이 예측식은 회귀 상수 및 상기 적어도 하나의 유관 팩터들에 각각 대응하는 적어도 하나의 변수항들의 선형 조합으로써 구성되는, 피부 나이 예측 장치.
- 제 9 항에 있어서,상기 적어도 하나의 유관 팩터들을 측정하는 측정부를 더 포함하는, 피부 나이 예측 장치.
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US15/037,636 US20160292380A1 (en) | 2013-11-22 | 2014-11-21 | Device and method for predicting skin age by using quantifying means |
JP2016532601A JP2016537124A (ja) | 2013-11-22 | 2014-11-21 | 計量化手段を用いた肌年齢予測装置および方法 |
CN201480063368.0A CN105745657A (zh) | 2013-11-22 | 2014-11-21 | 用于通过使用量化手段来预测皮肤年龄的设备和方法 |
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KR1020130142938A KR20150059394A (ko) | 2013-11-22 | 2013-11-22 | 계량화 수단을 이용한 피부 나이 예측 장치 및 방법 |
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WO2017049103A1 (en) * | 2015-09-17 | 2017-03-23 | Prodermiq, Inc. | Predicting skin age based on the analysis of skin flora and lifestyle data |
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US11055762B2 (en) * | 2016-03-21 | 2021-07-06 | The Procter & Gamble Company | Systems and methods for providing customized product recommendations |
CN105962892A (zh) * | 2016-04-22 | 2016-09-28 | 深圳还是威健康科技有限公司 | 测量皮肤年龄的可穿戴设备及其方法 |
KR102297301B1 (ko) | 2017-05-31 | 2021-09-06 | 더 프록터 앤드 갬블 캄파니 | 겉보기 피부 나이를 결정하기 위한 시스템 및 방법 |
CN110678875B (zh) | 2017-05-31 | 2023-07-11 | 宝洁公司 | 用于引导用户拍摄自拍照的系统和方法 |
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Also Published As
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CN105745657A (zh) | 2016-07-06 |
JP2016537124A (ja) | 2016-12-01 |
HK1225477A1 (zh) | 2017-09-08 |
US20160292380A1 (en) | 2016-10-06 |
KR20150059394A (ko) | 2015-06-01 |
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