JP2008006224A - Gloss color sample of face image - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily evaluate an influence of the gloss color of a makeup face on the impression of the makeup face. <P>SOLUTION: The gloss color sample of a face image is a chromatic color gloss face image which is obtained by adding a chromatic color component as its surface reflected light component to the face image determined as the reference by image processing and a plurality of surface reflected light components different in hues are presented. A feeling of a gloss is uniformized in each of the chromatic color gloss face images. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gloss color sample of a facial image useful for evaluating the impression of gloss on a makeup face.

  In general, foundations are used to hide skin spots, freckles, dullness, pores, etc., and make the skin look the desired skin color. In addition to making the color a desired skin color, a color that can give a specific color to gloss (surface reflected light) has been developed. According to this foundation, a specific color can be felt in the gloss that changes depending on the viewing angle and the like, and a new impression unprecedented on the makeup face can be created.

  On the other hand, it has been known that the impression of makeup with a foundation depends on not only the hue and lightness but also the gloss strength, and a foundation with a hue, lightness and gloss strength according to the customer's skin color is recommended. A method to do this has been proposed (Patent Document 1).

JP 2005-222405 A

  However, the influence of gloss color such as foundation on the impression of a makeup face is difficult to investigate because the effect of gloss intensity is large, and no general relationship has been established. Therefore, when a cosmetic salesperson or beauty staff recommends a cosmetic containing an interference pearl powder to a customer, the gloss color is considered to depend on individual experience and sensitivity.

  On the other hand, an object of the present invention is to make it possible to easily evaluate the influence of the gloss color of the makeup face on the impression of the makeup face. Another object of the present invention is to make it possible for cosmetic salespersons to recommend to customers the glossy color of cosmetics containing interfering pearl powder without being influenced by individual experience and sensitivity.

The present inventor has (i) glossiness as sensory evaluation that the sensitivity varies depending on the hue, that is, an index of physical glossiness (for example, L ^* a ^* b ^{) for} a makeup face image having a different glossy color. ^{* Even if} the L ^* values of the color system are equal, the glossiness as a human sensory evaluation will be different. In order to be able to evaluate the impression of the image, it is effective to align the glossiness of those images. (Iii) For that purpose, for each hue of glossy color, the internal scattered light image of the face image is used. Create multiple chromatic gloss face images with chromatic color components added as surface reflected light components with varying gloss intensity, select the chromatic gloss face images of each hue that have the same glossiness, and select It was found that a glossy color sample should be used.

  That is, the present invention provides a face that presents a plurality of chromatic gloss face images obtained by synthesizing a chromatic color component as a surface reflected light component with an internally scattered light face image with different hues of the surface reflected light component by image processing. Provided is a method for presenting glossy colors of images, in which the glossiness of each chromatic glossy face image is made uniform.

  In addition, the present invention provides a plurality of chromatic gloss face images obtained by synthesizing a chromatic color component as a surface reflected light component with an internally scattered light face image by image processing and having different hues of the surface reflected light component. Thus, a glossy color sample of a face image in which the glossiness of each chromatic glossy face image is aligned is provided.

  Furthermore, the present invention provides a cosmetic advice method that uses the above-described glossy color sample to ask the customer's preferred glossy color of the facial image and recommends a cosmetic containing an interference pearl powder that exhibits the customer's preferred glossy color. .

  In addition, a glossy color impression evaluation method for comparing glossy face images using the above glossy color sample is provided.

The chromatic gloss face image presented by the gloss color presentation method of the face image of the present invention or the chromatic gloss face image constituting the gloss color sample of the present invention is a glossy chromatic gloss face image having a different hue. The intensity of the gloss is not the physical gloss intensity represented by L ^* or the like, but the glossiness as a sensory evaluation, so the effects of the gloss intensity on the impression are all the same. It is possible to compare and recognize the impression that the color brings to the face image, and it is possible to evaluate the impression of the makeup face caused by the difference in glossy color that cannot be evaluated if the glossiness is different.

  Therefore, cosmetic customers such as foundations can easily select a glossy color that suits their preference by comparing the glossy color samples of the present invention.

  Further, a cosmetic salesperson or a beauty staff can recommend a glossy cosmetic product that suits the taste of the customer by knowing in advance the effect of the glossy color of the chromatic glossy face image on the cosmetic face. .

  Furthermore, since the developer of the cosmetics containing the interference pearl powder can evaluate the gloss strength and the gloss color separately, it is easy to design a product that meets consumer needs.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  The gloss color sample of the face image of the present invention presents a plurality of makeup face images having different glossy hues as sample images, and each sample image has a glossiness as a sensory evaluation. It is said.

  Here, the presentation includes a case where the above-described image is printed on a paper surface or a case where the image is displayed on a display of a personal computer.

  The glossy color of this image corresponds to that obtained by applying cosmetics such as foundation, teak, shadow, etc. containing interference pearl powder on the skin in actual makeup, and the hue of the glossy color is It is determined by the thickness, refractive index, etc. of the transparent coating material in the interference pearl powder to be used.

  The gloss color sample of the face image of the present invention is produced as follows, for example.

  First, in order to set the glossiness to be applied to the sample image to an optimal makeup face, a face image of the makeup face coated with a predetermined color foundation is taken, and only the internal scattered light component of the makeup face image is taken. Create an image (hereinafter referred to as the original image), add an achromatic component as the surface reflected light component to the original image, and optimize the gloss intensity when creating an achromatic gloss face image, and use that as the reference image .

Specifically, a range in which the gradation difference of RGB 256 gradations is within 5 is selected around the portion where the glossiness of the cheek portion of the original image is the highest, and the L ^* a ^* b ^* is measured. Then, an image in which the surface reflected light component is added to the original image in a plurality of stages is produced by image processing.

For example, when the L ^* value of the cheek portion of the original image is 67, the value is set to level 0, and the L ^* value of the image is increased so that the L ^* value of the cheek portion increases by 1.5. Are produced in 9 stages (L ^* = 68.5 to 80.5), and a total of 10 images with different L ^* values are obtained.

  Here, an image with an increased surface reflection light component is obtained by using a known simulation device (for example, evaluation of glossiness of base makeup using a CG image (Japanese Cosmetic Engineers Magazine Vol. 39, No. 1)) 2562681). The above-mentioned paper shows a moving image of a makeup face, and the above-mentioned patent document shows a still image of a makeup face.

Next, for the women who make up everyday, the top and bottom methods (psychophysics methods / theories / applications, first volume, page 48) are selected from the 10 images described above. The average of the L ^* values of the images most preferred by each person is calculated, and this is set as the optimum achromatic gloss intensity, and the image having this achromatic gloss intensity is set as the reference image.

Next, a plurality of chromatic gloss face images are produced with different glossiness intensities by adding chromatic color components such as yellow, red, green, and blue as surface reflection light components to the original image. In this case, in order to clarify the impression that the change in hue has on the face image, it is preferable to make the color difference from white of each chromatic color constant, and the saturation of each chromatic color is made equal for each gloss intensity. It is preferable. FIG. 2 shows eight chromatic glossy face images in which yellow, red, green, or blue having the same color difference from white are added as chromatic color components with L ^* values varied by 1.5 (L ^* = 70). ~ 80.5) It is a list of the manufactured ones. This chromatic gloss face image can also be created using the above-described simulation apparatus.

Next, an image having the same glossiness as that of the reference image is selected from the chromatic glossy face images produced by changing the L ^* value for each chromatic color using the up / down method. This selection is also preferably based on the selection of a plurality of women who make up daily.

  In the present invention, as shown in FIG. 1, a gloss color sample of a face image is constituted by the chromatic gloss face image selected for each hue of chromatic color, preferably together with the achromatic gloss image.

  The effect of the gloss color on the impression varies depending on the color of the cosmetic material such as the foundation (the color of the internally scattered light). Therefore, the gloss color sample is preferably prepared for each color of the cosmetic material.

  The glossy color impression evaluation method of the present invention is such that when a cosmetic customer recognizes his glossy color preference, a cosmetics sales commissioner, a beauty staff member, etc. knows the customer's preference, or the customer's overall glossy color preference. When the developer of cosmetics designs cosmetic products containing interference pearl powder, etc., the glossy color sample of the present invention described above makes it possible to mutually express the impression of glossy colors with different hues. It is a method of comparing and recognizing.

  In addition, the cosmetics advice method of the present invention recommends that a cosmetic salesperson or a beauty staff visit the customer's glossy color preference using the glossy color sample of the present invention and recommend a pearl powder-containing cosmetic that matches it. Or visit customers' favorite impressions and recommend glossy pearl powder-containing cosmetics that match those impressions.

Example 1 and Comparative Example 1
(1) Production of Glossy Color Sample A glossy color sample was produced using a simulation apparatus (Japanese Patent Laid-Open No. 2003-256812) as follows.

  First, a foundation having a standard coating color, to which no interference pearl powder is added, is applied to the face of the subject, and the face image is taken by the method described in Japanese Patent Application Laid-Open No. 2003-256812, and the surface reflected light face image And internally scattered light face image.

  The internal scattered light face image separated here is used as an original image, and the surface reflected light face image is subjected to processing for changing the hue or intensity of the surface reflected light component to a desired one.

  Specifically, in the process of changing the gloss intensity, all the RGB components of the surface reflected light face image are multiplied by the same constant, and the intensity is changed. In the process of changing the gloss hue, the RGB component of the surface reflected light face image is multiplied by an RGB distribution ratio (constant) according to the desired color, and the hue is changed. The surface reflected light face image data whose color or intensity has been changed in this way and the original image are synthesized to produce a target glossy color sample.

In this embodiment, nine achromatic glossy face images obtained by synthesizing the achromatic surface reflected light components are produced by the above-described method so that the L ^* value of the cheek increases by 1.5 (L ^* = 68.5 to 80.5), a total of 10 face images were obtained.

Twenty women aged 21 to 40 working in Tokyo selected the above 10 images for the best glossiness using the up-and-down method, and L ^* of the cheeks of the images they chose The average value was calculated to be 73. Therefore, an achromatic glossy face image having an L ^* value of 73 was used as a reference image.

Next, using the above-described method, nine red glossy face images obtained by synthesizing the red surface reflected light component with the original image are prepared so that the L ^* value of the cheek increases by 1.5 (L ^* = 68.5 to 80.5), a total of 10 face images were obtained. Similarly, a total of 10 images with different L ^* values were obtained for the blue glossy face image obtained by combining the reference surface image with the blue surface reflection light component and the yellow glossy face image obtained by combining the reference image with the yellow surface reflection light component. . Eight images of L ^* = 70 to 80.5 were selected from the 10 images of each color, and the following evaluation was performed.

Six women aged 24 to 29 working in Tokyo choose the glossy face image of each color that feels the same glossiness as the reference image, and the L ^* value of the cheek part of the image selected by each person The average value was calculated. As a result, in the red gloss face image, L ^* = 73.6 has the same glossiness as that of the reference image (L ^* = 73). Similarly, in the blue gloss face image, L ^* = 71.5. In the yellow glossy face image, L ^* = 73.8, and it was confirmed that the amount of surface reflected light necessary to perceive that glossiness is equal differs significantly depending on the hue. The gloss color sample of Example 1 was composed of a chromatic gloss face image having the same glossiness as that of the reference image (L ^* = 73).

On the other hand, in the glossy face image of each color, an image of L ^* = 73 was selected, and the glossy color sample of Comparative Example 1 was configured with these images.

(2) Evaluation The red, blue, and yellow gloss face images constituting the gloss color sample of Example 1 and the red constituting the gloss color sample of Comparative Example 1 are given to 39 women aged 18-24 years living in the suburbs of Tokyo. For each of the blue, yellow and glossy face images, the following questions (a) to (h) were answered, and the percentage (%) of those who answered each question positively was determined. The results are shown in Table 1.

(a) Whether the glossiness is weak, the same or strong compared to the reference image
(b) Whether it is brighter than the reference image
(c) Whether or not there is a stereoscopic effect compared to the reference image
(d) Whether there is gloss compared to the reference image
(e) Whether it is compared with the reference image
(f) Whether it is beautiful compared to the reference image
(g) Whether there is a transparency compared to the reference image
(h) Whether it looks natural compared to the reference image

（注）バラツキでは、（ｂ）〜（ｅ）の数値（％）の最大値と最小値の差が４０未満を○、４０〜６０を△、６０以上を×と評価した。

(Note) In the variation, the difference between the maximum value and the minimum value of the numerical values (%) of (b) to (e) was evaluated as ◯, less than 40, Δ from 40 to 60, and × from 60 or more.

  From Table 1, in Example 1, the glossiness of each color gloss face image is equal, so it is directly affected by the glossiness (b) Brightness, (c) Three-dimensional effect, (d) Gloss, (e) Tekari, In Comparative Example 1, the glossiness of the glossy face image of each color is not equal, so the glossiness is directly affected by the glossiness (b) Brightness, (c) Three-dimensional effect, (d) Glossiness, (e) There is a large variation between colors for Tekari.

As for (f) beauty, (g) transparency, and (h) nature, Example 1 has a better evaluation than Comparative Example 1, so that an impression is perceived for each color. It can be seen that it is evaluated. On the other hand, in Comparative Example 1, the L ^* values of the gloss face images of the respective colors are the same, but the glossiness is not uniform, so it can be seen that the impression of the glossy face image of each color is governed by the difference in glossiness. .

  As described above, according to the present invention, it is possible to evaluate the impression of a makeup face brought about by a glossy color, which cannot be evaluated unless the glossiness is uniform. And since such evaluation becomes possible, for example, since the evaluation of red glossy color is low in Comparative Example 1, there is a possibility that development of cosmetics having red glossy color may be suppressed. However, since high evaluation is obtained in Example 1, development of a red glossy cosmetic material is promoted, and a new cosmetic material can be proposed.

  INDUSTRIAL APPLICABILITY The present invention is useful for makeup advice, sales promotion, research and development, etc. using a cosmetic product exhibiting a glossy color.

It is a schematic diagram of a glossy color sample. It is a list of chromatic gloss face images with different L ^* levels.

Claims (6)

  Presenting multiple glossy facial images with different hues of the surface reflected light component by combining the chromatic color component as a surface reflected light component with the internally scattered light face image by image processing A presentation method in which the glossiness of each chromatic gloss face image is aligned.   In order to align the glossiness of each chromatic glossy face image, the glossiness of each achromatic glossy face image is added to the glossiness of the achromatic glossy face image obtained by adding an achromatic component as the surface reflected light component to the internally scattered light face image. The presentation method according to claim 1, wherein:   A plurality of chromatic luster facial images obtained by synthesizing a chromatic color component as a surface reflected light component on the internally scattered light face image by image processing, each having a different hue of the surface reflected light component. Glossy color sample of a facial image that has the same glossiness as a colored glossy facial image.   By image processing, an achromatic glossy face image obtained by adding an achromatic component as a surface reflected light component to the internally scattered light face image is provided, and the glossiness of each chromatic glossy face image is added to the glossiness of the achromatic glossy face image. The glossy color sample according to claim 3, which is aligned.   5. A cosmetic advice method for recommending a cosmetic exhibiting a glossy color preferred by a customer by asking the glossy color of a facial image preferred by the customer using the glossy color sample according to claim 3. A glossy color impression evaluation method for comparing glossy face images using the glossy color sample according to claim 3.

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