KR20200135010A - Method for evaluating a state of makeup - Google Patents

Abstract

The present invention relates to a method for measuring a collapsed state of makeup using a cognitive scientific method with regard to the state of the makeup collapsed over time after makeup, and evaluating the state thereof. Specifically, by installing an actual mirror in an eye tracking device, a gaze movement is tracked when a user wearing the makeup actually looks at the mirror and a process of unconsciously determining the collapse makeup is measured, an evaluation index of beautifully and dirtily collapsed makeup is presented, and the collapsed makeup is evaluated in accordance with the index.

Description

{Method for evaluating a state of makeup}

The present invention relates to a method of measuring the collapsed state of makeup using a cognitive scientific method and evaluating the state of the makeup collapsed over time after makeup. Specifically, by installing an actual mirror in the eye-tracking device, the user who wears makeup tracks the gaze movement when actually looking at the mirror, and measures the process of unconsciously determining makeup collapse, which is an evaluation index of the beautiful and dirty makeup of makeup. And, according to the evaluation index, it relates to a method of evaluating the collapse of makeup.

In general, makeup cosmetic products are used for the purpose of covering skin flaws, expressing bright skin, protecting skin from ultraviolet rays, and controlling sweat and sebum.

However, as time passes after applying makeup, the makeup condition deteriorates in various ways. This “deterioration of makeup condition over time” is commonly referred to as “makeup collapse”. Ideally, the makeup may not collapse at all over time (Ideal State), but in most cases, the makeup eventually collapses, and depending on how this collapse changes and appears, it is largely “beautifully collapsed” and “dirty”. It can be divided into”.

On the other hand, with respect to the characteristics of makeup products over time, it has been generally evaluated in terms of makeup persistence. Makeup persistence is particularly resistant to sweat and sebum, and generally refers to the ability of a makeup product applied to the skin to be maintained for a long time without being erased by water and sweat. Regarding the characteristics of base makeup cosmetics (e.g., foundation, cushion, etc.), if makeup persistence is not secured, the makeup collapses, and functions such as skin cover, skin expression, and skin protection cannot function properly. Persistence has been used interchangeably with the terms opposite.

However, makeup persistence is a term referring to a wider range of properties related to the ability of makeup to last for a long time without being erased, while makeup collapse is a term referring to a more specific condition compared to makeup persistence. In particular, despite the increasing importance of “Makeup Breakdown” when choosing and purchasing base makeup cosmetics, its meaning has never been clearly defined, and its concept is also abstract, making it difficult to study, so far “Makeup Breakdown” There was no definition of ”and related studies.

Since the aspect and degree of makeup collapse can act as an important factor in selecting a base makeup product for a user in particular, there is a need for a specific criterion and measurement method for this evaluation.

1. Korean Patent Publication No. 2010-0047863 (published on May 10, 2010) 2. Japanese Patent Publication No. 2016-0182235 (published on October 20, 2016)

Accordingly, the present inventors install a real mirror in the gaze tracking device, and measure the process of unconsciously determining makeup collapse through tracking the gaze movement when the user actually looks at the mirror, so that the makeup applied to the face is “pretty” or “ It was found that the characteristics of the collapse phenomenon could be identified and objectified, and the present invention was completed.

Accordingly, it is an object of the present invention to objectively measure and define a phenomenon of “make-up collapse”, and to provide an index and an evaluation method that can be objectively characterized.

In order to achieve the above object, the present invention uses a gaze tracking device interlocked with the monitor while the test subject observes his/her face through a mirror disposed on the upper surface of the monitor, and uses a “gaze share immediately after makeup” for each facial area of interest. And a method of calculating the area of interest of the face whose gaze increase/decrease rate is a (+) value as an evaluation index of makeup collapse by measuring the “gaze share after maintaining the makeup state”, and a method of calculating makeup collapse using the index calculated by the above method. Provides a way to evaluate.

The method of the present invention not only measures the process of unconsciously determining the makeup collapse of the user who actually wears makeup by using the gaze tracking device and the actual mirror, but also the existing photo stimulus or PC built-in camera does not capture. It makes it possible to evaluate the detailed properties of makeup that is not possible, allowing more realistic and realistic observation and evaluation. In addition, through these observations, we will provide an index that can be used to evaluate makeup breakdown by deriving a point area that is used as the basis for determining makeup breakdown and a point area that is used as a basis for determining makeup breakage that is pretty or messy. It is possible to use these indicators to make it possible to evaluate the appearance of a beautiful or dirty makeup.

1 is a schematic diagram of a monitor equipped with a gaze tracking device incorporating a mirror.
FIG. 2 is a diagram showing specific classification details of an area of interest (AOI) of the face according to the area of the makeup collapse phenomenon.
3 shows the eye-gaze share by area of interest (AOI) immediately after makeup.
FIG. 4 shows the increase/decrease rate of eyesight for each area of interest (AOI) in the case of determining a beautiful collapse when an individual's makeup state is unconsciously observed after 6 hours of makeup, and a case in which a messy collapse is determined.
5 shows what to look at for each area of interest (AOI) when determining makeup collapse.
6 shows the factors affecting the satisfaction of makeup collapse over time and the influence of each judgment factor.

The present invention provides a method for deriving an evaluation index related to makeup collapse by using an eye tracking device in which an actual mirror is grafted.

Eye tracking is a cognitive science research method that can study the visual attention of a test subject by presenting a visual stimulus on a monitor screen and tracking the gaze of a person observing it.

However, in an experiment using a gaze tracking device that tracks unconscious gaze movements, since image stimulation is mainly used, it was difficult to track the gaze of the subject who actually observes the makeup of the person's face in real time. In order to present the face reflected in the real mirror on the screen in real time, the best way possible so far was to use the built-in camera of a PC for gaze tracking experiments. It is a method to capture the subject's face in real time with the built-in camera (Input), reverse the image taken using software (mirror image) and display the mirror image (Output) with the left and right inverted on the monitor. However, in this method, a PC built-in camera with a low resolution cannot express detailed makeup properties and detailed skin conditions, including lumps, wrinkles or pinching in pores, and lifting of makeup products. Above all, viewing the monitor is actually There was a limit to the lack of immersion and realism because I didn't think I was looking in the mirror. Accordingly, the present invention proposes a method for evaluating makeup collapse through a new eye tracking using a “real mirror” as described below (see FIG. 1).

The present invention relates to an area of interest (AOI) of the face when the subject observes his/her face in a makeup state by using a gaze tracking device in which an actual mirror is grafted, and more specifically, an interest predetermined by the present inventors. It provides a method of measuring the eye occupancy according to the area and calculating an evaluation index that can be used to evaluate makeup breakdown from this.

The term “area of interest (AOI) of the face” used in the present invention refers to subdividing the entire face area into a minimum area unit according to the collapse of each face area of the makeup. For example, it is divided into pinching, clumping, darkening, etc., which are representative phenomena of makeup collapse, and subdividing the area where pinching occurs into undereye wrinkles, lateral eye wrinkles, and nasolabial folds around the mouth to represent the minimum area unit according to the makeup collapse phenomenon. In the present invention, it is divided into 11 areas of interest, and these areas of interest are specifically subdivided as follows:

① Eyebrow

② Wrinkles under the eyes (total left and right)

③ Wrinkles on the sides of the eyes (total left and right)

④ nose

⑤ Side of the nose (total left and right)

⑥ Cheek (total left and right)

⑦ Nasolabial folds (total left and right)

⑧ Mouth + seal weight

⑨ Chin + Peripheral

⑩ forehead

⑪ The forehead and hair boundary.

The term “gaze share” used in the present invention refers to the ratio of the subject's gaze staying for each area of interest of the face, centering on the distribution of gazes for each area of interest during the entire viewing time.

In the present invention, the method of measuring the gaze share for each region of interest of a predetermined face includes the following steps:

(a) Inverting the image of the subject's face photographed through the camera at the top of the monitor, and outputting a mirror image on the monitor screen in real time.

In this step, the subject is positioned in front of the monitor with a face recognition camera at the upper end and a gaze tracking device interlocked with the monitor at the lower end, and then the subject is The face is photographed, and the photographed face image is inverted left and right so that it is displayed on the screen of the monitor. Preferably, prior to this step, the subject is placed in front of the monitor, and then the eye tracking device determines the position of the subject's eyes. You can take steps to adjust the direction to point.

(b) arranging the mirror on the upper surface of the monitor according to the position of the mirror image in the output screen, and then generating the eye coordinates of the subject using a gaze tracking device based on the mirror image.

In the present invention, a commercially available gaze tracking device may be used, and for example, THE EYE TRIBE (THE EYE TRIBE), which is a non-contact stationary gaze tracking device, may be used.

The subject is placed within the range of the track box, which is a space where the subject's gaze can be tracked in the gaze tracking device, so that the distance between the monitor and the subject is kept constant. In this case, the appropriate distance between the monitor and the subject is approximately It is 60 cm.

In the method of the present invention, in order to accurately measure the gaze coordinates (x, y) of a subject, different geometric features of the eye are measured for each individual, and a calibration process is performed to standardize according to a 3D eye model, a gaze tracking measurement system. . In this process, the subject's cornea, the location and shape of the fovea, the refraction and reflection characteristics of light are acquired, and the characteristics of the eye condition when looking at the correction point presented on the screen are modeled. In the gaze tracking method incorporating an actual mirror used in the present invention, the number of corrections may be adjusted according to the observer, but usually two times are preferred.

Among them, the first correction process is performed in step (a), and application software related to gaze tracking of a subject's face, which is input in real time through a camera at the top of the monitor (for example, in the present invention, gaze tracking BRITS, a software developed by BNRI Co., Ltd., was used to perform an in-depth analysis of the results, but it is not limited thereto) to invert the photographed image left and right, and then convert it to a mirror image (ie, a left and right inverted image). Output to the monitor.

The secondary correction process is performed in this step (b), and the subject is asked to observe and evaluate his or her face by looking at the actual mirror placed on the upper surface of the monitor. During this evaluation process, the movement of the eyeball is linked with the monitor. Tracking with a gaze tracking device, recording the tracking result by recording/taking it, and then aligning the recorded result with the image output to the monitor. The actual mirror is arranged according to the position of the “mirror image” in the screen, so the test subject sees and evaluates his or her face in the actual mirror, but in reality, evaluation by area is based on the mirror image of the screen placed in the same position behind the mirror. Therefore, through this, the subject's gaze coordinates are corrected, and individual gaze coordinates (x, y) can be generated.

(c) Analyzing the eyeball share of the subject for each area of interest of the face by tracking the eye movement of the subject with a gaze tracking device linked to the monitor while the subject observes his or her face through a mirror.

In the present invention, the area of interest of the face is largely divided into 11 predetermined areas, and the gaze of the subject stays in each area of interest of the face, centering on the distribution of the gaze for each area of interest from the recording result obtained using the gaze tracking device. Analyze ratio, that is, eye-catching percentage.

At this time, in the analysis of the AOI region, the human eye instinctively stays on the eye first, so the region of interest of the face does not include the area around the eyes in the present invention.

At this time, the gaze share for each area of the face is calculated, and the criteria of the individual gaze coordinates are not changed, while the eye movement tracking and evaluation are in progress, the subject is to fix their head so that their face does not go out of the actual mirror. It is desirable.

As described above, the evaluation index of makeup collapse can be calculated by measuring the eye-gaze share according to the region of interest of the face, and the method of calculating the evaluation index of makeup collapse according to the present invention includes the following steps:

(1) While the subject is observing his/her face through a mirror placed on the upper surface of the monitor immediately after make-up, by using a gaze tracking device linked to the monitor, “Gaze share immediately after make-up” for each area of interest (AOI) of the face ( Measuring X)”.

In this step, immediately after makeup, the subject is asked to observe and evaluate his or her face by looking at the actual mirror placed on the upper surface of the monitor screen, and during this evaluation process, eye movements are tracked with a gaze tracking device linked to the monitor. . The tracking result is recorded, and the gaze share for each area, that is, “gaze share immediately after makeup (X)” is derived from the recording result, centering on the gaze distribution for each area of interest.

(2) After a certain period of time has elapsed after maintaining the makeup state, the area of interest of the face using the eye-tracking device while the subject is observing his or her face through a mirror placed on the upper surface of the monitor in step (1). (AOI) The step of measuring the “eye view share (Y)” after maintaining the makeup state.

After a certain period of time has elapsed after maintaining the makeup state, the subject is asked to perform the task of observing and evaluating his or her face again by looking at an actual mirror placed on the upper surface of the monitor screen. Track with a gaze tracking device. The tracking result is recorded, and the gaze share for each area, that is, the “gaze share (Y)” after maintaining the make-up state, is derived based on the gaze distribution for each area of interest from the recording result.

In the present invention, the time of maintaining the makeup state and then maintaining the makeup state until the eyeball share is measured is not particularly limited, but in general, considering the time that people maintain makeup, from 3 hours to It may be 12 hours, 4 hours to 10 hours, or 5 hours to 8 hours. For example, in the embodiment of the present invention, after maintaining the make-up for 6 hours, the “gaze share (Y) after maintaining the make-up state” was measured.

(3) In the same area of interest on the face, the gaze obtained from the “Gaze share immediately after makeup (X)” derived from step (1) above and the “Gaze share after maintaining makeup state (Y)” derived from step (2) above. A step of calculating a region of interest of a face having an increase/decrease rate of (+) as an evaluation index of makeup collapse.

In the same area of interest of the face, the change (difference) of the eye-gaze share (X; baseline) immediately after makeup calculated in step (1) and the eye-gaze share (Y) after maintaining the makeup state calculated in step (2) is compared The gaze increase/decrease rate can be obtained, and specifically the gaze increase/decrease rate can be obtained according to Equation 1 below:

[Equation 1]

Gaze increase/decrease rate (%) = [Gaze share Y(%) after maintaining makeup status]-[Gaze share X(%) right after makeup]

Through the gaze increase/decrease rate obtained as described above, it is possible to derive the change in the area of interest of the face that the subject unconsciously looks at (i.e., puts gaze) after a certain period of time after makeup has elapsed. The area of interest on the face having this (+) value becomes an important evaluation index in evaluating the condition of the makeup, specifically, the collapse of the makeup.

Specifically, makeup collapse is divided into “pretty collapse” and “dirty collapse”, and when evaluating the beautiful collapse of makeup and the dirty collapse of makeup, the change in the gaze increase/decrease rate may appear differently. The rate can be calculated according to Equations 2 and 3 below. In this case, the step (2) is the eye-gaze share of the subject who has not been assigned the eye-tracking task (Y ₀ ), the eye-gaze share of the test subject who has been assigned the eye-tracking task to evaluate the beautiful collapse of makeup (Y ₁ ), or makeup. It includes measuring the gaze share (Y ₂ ) of the subject who has been assigned the gaze tracking task to evaluate the messy collapse of In the following equation, the general gaze share after maintaining the makeup state refers to the gaze share when simply checking the makeup state regardless of the collapse of the makeup.

[Equation 2]

Gaze increase/decrease rate (%) when evaluating makeup's beautiful collapse = [Gaze increase/decrease rate (Y ₁ -X)(%) when evaluating beautiful collapse after maintaining the makeup status]-[General gaze increase/decrease rate after maintaining the makeup status (Y ₀ -X) )(%)]

(Y ₀ is the gaze share of the subject who has not been assigned the gaze tracking task, and Y ₁ is the gaze share of the subject who has been assigned the gaze tracking task to evaluate the beautiful fall of makeup)

[Equation 3]

Gaze increase/decrease rate when evaluating messy collapse of makeup (%) = [Gaze increase/decrease rate when evaluating messy collapse after maintaining makeup status (Y ₂ -X)(%)]-[General gaze increase/decrease rate after maintaining makeup status (Y ₀₎ -X)(%)]

(Y ₀ is the gaze share of the subject who has not been assigned the gaze tracking task, and Y ₂ is the gaze share of the subject who has been assigned the gaze tracking task to evaluate the messy collapse of makeup)

In other words, the region of interest of the face in which the gaze increase/decrease rate calculated according to Equation 2 is expressed as a (+) value becomes an evaluation index in evaluating the beautiful collapse of makeup, and the gaze increase/decrease rate determined according to Equation 3 is (+) ) The area of interest on the face represented by the value becomes an evaluation index in evaluating the messy collapse of makeup.

The inventors of the present invention are, through constant testing and analysis, when a subject who wears makeup observes the makeup state through a mirror after a certain period of time, when determining whether the makeup has collapsed beautifully, "forehead and/or eyebrows", Specifically, it was found that the gaze tends to be focused on the eyebrows, whereas when determining whether the makeup is messy, the gaze tends to focus on the “nose cheeks” and “nasolabial folds”. Therefore, when evaluating the beautiful collapse of makeup, the evaluation index becomes “forehead” and/or “eyebrow”, and when evaluating the messy collapse of makeup, the evaluation index becomes “nose cheek” and/or “nasolabial folds”.

The present invention provides a method of evaluating a makeup state, specifically makeup collapse, more specifically makeup breakage or messy makeup breakage through the “gaze increase/decrease rate” obtained by the above-described method.

In the region of interest of the face calculated as an evaluation index of makeup collapse according to the above method, the presence or absence of makeup collapse may be determined by deriving whether or not the gaze increase/decrease rate calculated according to Equation 1 has a (+) value.

In particular, when the eye-gaze increase/decrease rate calculated according to Equation 1 in the area of interest of the face derived as a beautiful collapse evaluation index according to Equation 2, that is, “forehead” and/or “eyebrow” has a (+) value, makeup is It can be evaluated as beautifully collapsed, and the gaze increase/decrease rate obtained according to Equation 1 in the area of interest of the face derived as a messy collapse evaluation index according to Equation 3, that is, “nose cheeks” and/or “nasolabial folds” is (+) If it has a value, it can be evaluated that the makeup is messy.

In addition, the inventors of the present invention mainly observe the degree of oiliness when the subject looks at the forehead and/or glabellar, whereas when looking at the area around the nose including the side of the nose, the phenomenon of gleaming and pinching occurs, and when viewing the nasolabial folds, the pinching phenomenon is mainly observed. Turned out to be observed.

Therefore, compared to the eyeball share measured immediately after makeup, after a certain period of time, an evaluation index for evaluating the collapse of makeup can be derived by evaluating which area the subject is intensively looking at on the makeup face. Based on the derived evaluation index, it is possible to determine whether the makeup has collapsed beautifully or dirty.

Furthermore, using the makeup collapse evaluation result according to the present invention, it is possible to develop makeup cosmetic materials and formulations with high customer satisfaction due to the beautiful collapse of makeup, as well as selection and recommendation of an appropriate product that meets the needs of customers.

Hereinafter, the configuration and effects of the present invention will be described in more detail with reference to Examples and Test Examples. However, these Examples and Test Examples are provided for illustrative purposes only to aid understanding of the present invention, and the scope and scope of the present invention are not limited by the following examples.

[Test Example 1] Evaluation of makeup collapse

I. Research methodology design

Using the gaze tracking method incorporating an actual mirror, in this study, the degree of makeup collapse was evaluated in the following way. In this study, THE EYE TRIBE (THE EYE TRIBE) was used as the gaze tracking device, and the mirror was arranged according to the position of the image displayed on the monitor, and the distance between the monitor and the subject was maintained at 60 cm. Also, for correction (first correction) on the monitor screen, BRITS (developed by BNRI Co., Ltd.), a software related to gaze tracking, was used.

A. Morning makeup condition evaluation (right after makeup)

-Measurement equipment setting (eye tracking device (THE EYE TRIBE; THE EYE TRIBE), monitor and mirror location and proper distance check)

-Experiment guide

-1st correction (correction on the monitor screen)

-Secondary correction (mirror correction)

- Measure

*assignment. Freely check makeup status (10 seconds)

B. Activities that cause makeup collapse

-Cinema (watching a movie)

-Restaurant (Lunch)

-Gym (light walking)

C. Afternoon makeup status evaluation (6 hours after maintaining makeup status)

-Setting and calibration in the same way as in the morning

-Measurement (task k below was randomly presented to remove the effect of the sequence of exposure, and each task took a break for 5 seconds)

*Task 1. Freely check makeup status (10 seconds)

*Task 2. Assessing makeup's beautiful collapse (10 seconds)

*Task 3. Assessing the messy collapse of makeup (10 seconds)

II. Experiment results and data

Cognitive science (e.g., fMRI, EEG, eye tracking, etc.) resultant data is usually based on relative comparisons between conditions. The gaze tracking analysis method of this study can also derive the result by comparing and analyzing the significant difference in gaze motion data between A/B conditions for a specific stimulus (A-B or B-A). These comparison values have statistical significance, but when expanded to a comparison between different stimuli/conditions, the data set to be analyzed is different, so the difference value (numerical value) inevitably differs. Therefore, the interpretation of cognitive science result data does not depend on numerical values, but in which brain regions (fMRI, EEG) or eye-tracking regions (Eye-tracking) differ, and the results are derived through topographic analysis. do. This study also used cognitive science method to establish AOI (area of interest) in the main area of the face, and through comparison between conditions within the area, a significant difference area that can explain the characteristics of each condition was derived.

1) Make-up breakdown AOI (area of interest) (a total of 11 areas) set-When judging make-up breakdown, do you look at the “Which part of the face”?

In the afternoon, when judging the extent to which my makeup has collapsed, people mainly tried to find out which part of the face they judged.

The AOI (Area of Interest) analysis method, which is the most representative method of analyzing the gaze tracking results, was based on the AOI divided in advance and the visit data of each gaze. The results were derived through quantitative analysis of temporal/spatial data by analyzing the visit time, residence time, sequence, frequency, and revisit rate of each AOI.

In this study, a total of 11 AOIs were classified by subdividing the facial area, focusing on the collapse of each facial area of the makeup. For example, the representative phenomena of makeup collapse, such as pinching, clumping, and darkening, were divided, and the area where pinching occurred was subdivided into undereye wrinkles, lateral wrinkles, and nasolabial folds around the mouth, and the minimum unit of the area according to the makeup collapse phenomenon was set. The details of the AOI classification according to the area of the makeup collapse phenomenon are as follows (see Fig. 2):

① Eyebrow

② Wrinkles under the eyes (total left and right)

③ Wrinkles on the sides of the eyes (total left and right)

④ nose

⑤ Side of the nose (total left and right)

⑥ Cheek (total left and right)

⑦ Nasolabial folds (total left and right)

⑧ Mouth + seal weight

⑨ Chin + Peripheral

⑩ forehead

⑪ Border between forehead and hair

As described above, the AOI to be observed was set, and the gaze arrival time, sequence, gaze dwell time, revisit rate, etc. of each area were analyzed through spatiotemporal quantitative analysis based on Visit (area visit). Among them, I compared the difference between observing a beautiful collapse and a messy collapse, typically focusing on the gaze distribution (eye gaze share) for each AOI area.

i) Eye-catching share

In this study, the gaze distribution was based on the total duration, which did not distinguish between gaze fixation and saccade. In addition, the gaze distribution was calculated by collecting 30 gaze position information per second and analyzing the ratio of all coordinate information sampled at 30 Hz on each AOI. This gaze distribution (eye gaze share) visually represents'where do you look at' when observing a specific object, and the calculation result is shown in FIG. 3.

The gaze share shown in Fig. 3 not only enables the subject to unconsciously check which area he or she pays attention to, but also enables the calculation of the'gaze increase/decrease rate' for each AOI through a change in the gaze share within the same AOI area. do.

In this study, the amount of increase (+)/decrease (-) change in gaze share (= gaze increase/decrease rate) within the same AOI immediately after makeup and after 6 hours of makeup was calculated according to Equation 1 below.

[Equation 1]

Gaze increase/decrease rate (%) = [Gaze share (Y)(%) after maintaining makeup status]-[Gaze share immediately after makeup (X)(%)]

ii) Gaze increase/decrease rate by gaze tracking task

In this study, in the eye-tracking measurement immediately after makeup, a separate eye-tracking task was not assigned, and the subject's eye-gaze share was measured after allowing them to freely check their makeup status. In addition, in the eye-tracking measurement after maintaining the makeup state for 6 hours, the eye-gaze share of the subjects was measured before and after the eye-tracking task was assigned. This is because, depending on the purpose of the gaze tracking task, the subject's observation intention is reflected in the unconscious gaze movement.

Specifically, the measurement of eye tracking after maintaining the makeup state was performed as follows. First of all, when measuring the gaze share (Y ₀ ) of the subjects who were not assigned the gaze tracking task, they were allowed to'freely check their makeup status' as if they were looking in a mirror when actually correcting makeup. When measuring the gaze share (Y ₁ ) of the subject who was given a gaze tracking task to evaluate the makeup's beautiful collapse, the makeup status was'checked under the instructions to observe how beautifully collapsed'. In addition, when measuring the gaze share (Y ₂ ) of a subject who has been assigned a gaze tracking task to evaluate the messy collapse of makeup, the makeup status is likewise'check your makeup status under the instruction to observe how dirty you are'. I did it. The difference in gaze share according to the assignment of this gaze tracking task is that even if the subject has the same image, the difference in perspective between when the subject unconsciously looks into the mirror and when evaluating the collapse beautifully, and when judging the collapse in a messy manner is the difference in gaze share. Is reflected. Therefore, if we compare and analyze the gaze share before and after the gaze tracking task is assigned, we can derive each unique difference value.

However, since the collapse reflects the change in makeup over time, it was calculated on the basis of the change in gaze share after 6 hours of makeup maintenance compared to the gaze share immediately after makeup. Compared to immediately after makeup by AOI area, compared to immediately after makeup, compared to when makeup is maintained for 6 hours, and compared to freely checking the makeup condition ① When looking at a beautifully collapsed makeup (Equation 2), ② When looking at a messyly collapsed makeup (Equation 3) Thus, a unique AOI value for each condition was derived.

[Equation 2]

Gaze increase/decrease rate when evaluating makeup's beautiful collapse = [Gaze increase/decrease rate when evaluating beautiful collapse after maintaining the makeup state (Y ₁ -X)](%)-[General gaze increase or decrease rate after maintaining the makeup state (Y ₀ -X)]( %)

[Equation 3]

Gaze increase/decrease rate when evaluating messy collapse of makeup = [Gaze increase/decrease rate when evaluating messy collapse after maintaining makeup status (Y ₂ -X)](%)-[General gaze increase/decrease rate after maintaining makeup status (Y ₀ -X) ](%)

As a result of deriving the AOI value according to the above equation, when a person unconsciously observes the makeup state in the mirror in the afternoon, when it is determined that it is'pretty collapsed', the gaze tends to be more concentrated on the'forehead/eyebrow'. , When it was determined that the makeup was'dirtyly collapsed', it was found that the eyes were more concentrated on the'nose cheeks' and'nasolabial folds' (see Table 1 and FIG. 4).

Comparison according to the gaze increase/decrease rate of beautifully collapsed makeup and messy collapsed division formula Difference area
( The rate of gaze increase or decrease (+) value area) Beautifully collapsed [(Y ₁ -X)](%)-[(Y ₀ -X)](%) Forehead/Grown (+)% Messy collapse [(Y ₂ -X)](%)-[(Y ₀ -X)](%) Nose and nasolabial folds (+)%

As shown in Tables 1 and 4, it is noted that there is a difference in the area (ie, the main area of interest (AOI)) that the subject unconsciously looks at when deciding a beautiful collapse and when judging a dirty collapse. Able to know. The result of deriving the gaze increase/decrease by AOI tells you what area to focus on in order to recognize that even if the makeup is broken, it will be perceived as “more beautifully”. For example, since the amount of sebum secretion on the face varies from area to area, and it is difficult to control all areas to the same level, the above data can be the most satisfactory and effective as a result of focusing on a certain area of the face during makeup. It can be the basis for determining whether or not. 2) Factors for determining collapse-What do you look at when determining collapse?

In judging the makeup breakdown, if'where' is confirmed, it will also be important to see'what' in that area. In determining makeup breakdown, the pre-evaluation and post-IDI (In-Depth-Interview) results were confirmed to confirm what the subjects mainly observed in the major AOI areas such as the eyebrows, nose, and nasolabial folds. 5 shows what the test subjects see for each AOI, that is, what is the deciding factor for collapse. In FIG. 5,% data for each area was obtained through a pre-evaluation questionnaire (n=60), and a specific development description within the area was obtained through post IDI.

As shown in Fig. 5, as a result of confirming the factors for determining makeup collapse reported by each AOI area, the determination of the specific makeup collapse pattern includes the subject's subjective criteria, and thus the degree may be determined differently for each subject. , In common, it can be seen that'appropriate oiliness' was observed in the forehead area including the glabellar, the'greasy' and'interrupted' phenomena were observed in the area around the nose including the side of the nose, and finally, the nasolabial fold area also observed the phenomenon of'interception'.

In addition, the influence of each factor is calculated through regression analysis on the quantitative data results of the pre-evaluation survey (n=60) for each attribute of'just after makeup' and '6 hours after makeup' with the satisfaction of makeup collapse over time. (See Fig. 6). As a result, the top three factors by time point are as follows. The most influential attributes for the makeup break down are'adhesion','smoothness', and'covering power' immediately after application, and after a certain period of time,'the degree to which the skin oil and makeup match well and shine moderately' and ' The make-up does not come off mottled' is an important factor.

3) Conclusion-What is makeup breakdown?

In conclusion, makeup collapse includes all the various aspects in which the makeup condition changes after a certain period of time after makeup is completed. However, even within the phenomenon of makeup collapse, there are certain properties that the subjects observe more importantly. The areas that the subjects mainly observe and the features they observe are the basis for determining whether the makeup is'pretty broken' and'is it dirty?' Taken together, makeup breakdown can be defined as follows:

-Make-up breaks beautifully: Make-up is not stained and maintains a uniform state + There is a moderate level of gloss, especially on the forehead and brow

-Make-up is messy: Make-up is smudged + There is a jamming phenomenon, especially near the nose and nasolabial folds.

Claims (10)

(1) “Gaze share immediately after makeup (X)” for each area of interest of the face by using a gaze tracking device linked to the monitor while the test subject observes his/her face through a mirror placed on the upper surface of the monitor immediately after makeup Measuring a;
(2) After a certain period of time has elapsed after maintaining the makeup state, the area of interest of the face using the eye-tracking device while the subject is observing his or her face through a mirror placed on the upper surface of the monitor in step (1) Measuring the "eye view share (Y)" after maintaining the make-up state; And
(3) In the same area of interest of the face, the gaze obtained from the “Gaze share immediately after makeup (X)” derived from step (1) above and the “Gaze share after maintaining makeup state (Y)” derived from step (2) above. The step of calculating the area of interest of the face whose increase/decrease rate has a (+) value as an evaluation index of makeup collapse
It includes, and the gaze increase or decrease rate in step (3) is calculated according to Equation 1 below,
[Equation 1]
Gaze increase/decrease rate (%) = [Gaze share Y(%) after maintaining makeup status]-[Gaze share X(%) right after makeup]
How to calculate the evaluation index of makeup breakdown. The method of claim 1, wherein the region of interest of the face
-Brow;
-Undereye wrinkles (left and right summation);
-Wrinkles on the sides of the eyes (summed left and right)
-Nose;
-Side of the nose (left and right summation);
-Cheek (left and right sum);
-Nasolabial folds (total left and right);
-Mouth + seal weight;
-Chin + periphery;
- forehead; And
-Forehead and hair boundary
The method, characterized in that divided into a total of 11 areas. The method of claim 1, wherein the measurement of the eye gaze share
(a) reversing the image of the subject's face photographed through the camera at the top of the monitor, and outputting a mirror image on the screen of the monitor in real time;
(b) arranging the mirror on the upper surface of the monitor according to the position of the mirror image in the output screen, and then generating the eye coordinates of the subject using a gaze tracking device based on the mirror image; And
(c) Analyzing the subject's gaze share for each area of interest of the face by tracking the subject's eye movements with a gaze tracking device linked to the monitor while the subject is observing his or her face through a mirror
Containing, method. The method according to claim 1, wherein the method is to calculate an index for evaluating the appearance of makeup,
Here, the step (2) is to measure the gaze share (Y ₀ ) of the subject who has not been assigned the gaze tracking task, and the gaze share (Y ₁ ) of the subject who has been assigned the gaze tracking task to evaluate the beautiful collapse of makeup. Including that,
The step (3) includes calculating a region of interest of the face having a value of (+) in the eye gaze increase/decrease calculated according to Equation 2 below as an index for evaluating the beautiful collapse of makeup.
[Equation 2]
Gaze increase/decrease rate (%) when evaluating makeup's beautiful collapse = [Gaze increase/decrease rate (Y ₁ -X)(%) when evaluating beautiful collapse after maintaining the makeup status]-[General gaze increase/decrease rate after maintaining the makeup status (Y ₀ -X) )(%)]
(Y ₀ is the gaze share of the subject who has not been assigned the gaze tracking task, and Y ₁ is the gaze share of the subject who has been assigned the gaze tracking task to evaluate the beautiful fall of makeup) The method of claim 1, wherein the method is to calculate an index for evaluating messy makeup,
Here, in step (2), the gaze share (Y ₀ ) of the subject who has not been assigned the gaze tracking task, and the gaze share (Y ₂ ) of the subject assigned the gaze tracking task to evaluate the messy collapse of makeup are measured. Including that,
The step (3) includes calculating a region of interest of the face having a value of (+) in the eye gaze increase/decrease calculated according to Equation 3 below as an index for evaluating the messy collapse of makeup.
[Equation 3]
Gaze increase/decrease rate when evaluating messy collapse of makeup (%) = [Gaze increase/decrease rate when evaluating messy collapse after maintaining makeup status (Y ₂ -X)(%)]-[General gaze increase/decrease rate after maintaining makeup status (Y ₀₎ -X)(%)]
(Y ₀ is the gaze share of the subject who has not been assigned the gaze tracking task, and Y ₂ is the gaze share of the subject who has been assigned the gaze tracking task to evaluate the messy collapse of makeup) The method according to claim 4, wherein the index for evaluating the beauty of the makeup is a forehead, a brow, or both. The method of claim 5, wherein the index for evaluating messy collapse of the makeup is a nose cheek, a nasolabial fold, or both. (1) “Gaze share immediately after makeup (X)” for each area of interest of the face by using a gaze tracking device linked to the monitor while the test subject observes his/her face through a mirror placed on the upper surface of the monitor immediately after makeup Measuring a;
(2) After a certain period of time has elapsed after maintaining the makeup state, the area of interest of the face using the eye-tracking device while the subject is observing his or her face through a mirror placed on the upper surface of the monitor in step (1). Measuring the star “eye-eye share (Y)” after maintaining the make-up state; And
(3) In the region of interest of the face calculated as an evaluation index of makeup collapse according to any one of paragraphs 1 to 7, it is determined whether or not the gaze increase or decrease rate according to Equation 1 below represents a (+) value. Steps to
Containing, a method for evaluating the makeup collapse state.
[Equation 1]
Gaze increase/decrease rate (%) = [Gaze share Y(%) after maintaining makeup status]-[Gaze share X(%) right after makeup] The method of claim 8, wherein in step (3), the eye-gaze share (Y ₀ ) of the subject who has not been assigned the eye-tracking task, and the eye-gaze share (Y) of the test subject who has been assigned the eye-tracking task to evaluate the beautiful collapse of makeup _{In the} region of interest of the face calculated as an index for evaluating beautiful collapse of makeup by measuring ₁ ) and having a gaze increase/decrease rate calculated according to Equation 2 below,
[Equation 2]
Gaze increase/decrease rate (%) when evaluating makeup's beautiful collapse = [Gaze increase/decrease rate (Y ₁ -X)(%) when evaluating beautiful collapse after maintaining the makeup status]-[General gaze increase/decrease rate after maintaining the makeup status (Y ₀ -X) )(%)]
(Y ₀ is the gaze share of the subject who has not been assigned the gaze tracking task, and Y ₁ is the gaze share of the subject who has been assigned the gaze tracking task to evaluate the beautiful fall of makeup)
A method comprising determining that the makeup is beautifully broken when the eye gaze increase/decrease rate according to Equation 1 represents a (+) value. The method of claim 8, wherein in step (3), the gaze share of the subject who has not been assigned the gaze tracking task (Y ₀ ), and the gaze share of the subject who has been assigned the gaze tracking task to evaluate the messy collapse of makeup ( Y ₂ ) is measured, and the gaze increase/decrease calculated according to Equation 3 below has a (+) value so that in the region of interest of the face calculated as an evaluation index for messy collapse of makeup,
[Equation 3]
Gaze increase/decrease rate when evaluating messy collapse of makeup (%) = [Gaze increase/decrease rate when evaluating messy collapse after maintaining makeup status (Y ₂ -X)(%)]-[General gaze increase/decrease rate after maintaining makeup status (Y ₀₎ -X)(%)]
(Y ₀ is the gaze share of the subject who has not been assigned the gaze tracking task, and Y ₂ is the gaze share of the subject who has been assigned the gaze tracking task to evaluate the messy collapse of makeup)
A method comprising determining that the makeup is messyly collapsed when the gaze increase/decrease rate according to Equation 1 represents a (+) value.

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