JP5855890B2 - Hair color simulation system and method, and computer program - Google Patents

Description

  The present invention relates to a hair color simulation system and a simulation method for displaying a face image after hair dyeing on a screen, and a computer program used in the system.

When a haircut or hair dyeing is performed in a beauty salon or a barber shop (hereinafter collectively referred to as “hair salon”), a salon clerk presents a plurality of hair styles and hair colors to a customer using a catalog such as a magazine, Usually, a desired hairstyle or the like is selected from them.
However, since there are few examples that can be presented in catalogs such as magazines, disagreement between salon clerk and customer is likely to occur. For this reason, the customer may be dissatisfied with the workmanship after cutting or dyeing, and this may cause the customer to not settle in the hair salon.

Therefore, a camera that captures a customer's face image, a sample image of a plurality of hairstyles and hair colors are stored, and an image processing apparatus that includes a personal computer that synthesizes the sample image with the captured face image, and the composite image A simulation system including a display for displaying a screen has been proposed (see Patent Document 1).
According to this system, since various sample images are combined with the customer's face image and displayed on the display, it is considered that the customer's choices can be expanded and recognition mismatch with the salon clerk can be prevented.

JP 2008-3724 A

The hair dyeing material is composed of an agent having high penetrability and coloring property so as not to be influenced by the background color of the hair of the person to be dyed (hereinafter sometimes referred to as “under color”). When the influence of the under color is strong, a desired hair color may not appear after dyeing.
However, in the conventional simulation system, the sample color of the dye material is synthesized as it is into the customer's face image as it is, so depending on the color of the under color, the hair color when actually dyed is displayed on the display. It may be different from the hair color after dyeing.

For this reason, in the conventional simulation system, when the customer receives an impression that the hair color after the actual dyeing is different from the hair color displayed on the display in advance, the customer may be frustrated.
In view of the above-described conventional problems, a first object of the present invention is to provide a simulation system capable of displaying an appropriate dyed hair color that reflects the undercolor of the person to be dyed.

On the other hand, in a hair salon, in order to provide a variety of hair colors to customers, a salon clerk may mix a plurality of dyeing materials to prepare a mixed material of a desired color, and may perform dyeing with the prepared mixed material. However, even relatively veteran salon clerk do not know so many color combinations (recipes) that can produce a desired color mixture.
For this reason, when dyeing using a mixed material is proposed to a customer, it may be a one-pattern proposal, and it is difficult to make proposals according to various preferences.

  In view of such conventional problems, a second object of the present invention is to provide a simulation system capable of appropriately displaying a hair color after dyeing even when dyeing materials are mixed.

  (1) The simulation system of the present invention is a hair color simulation system that displays a face image after hair dyeing on the screen, and stores coordinate data of the color space after hair dyeing for each type of dyeing material. An input unit capable of inputting the undercolor type of the person to be dyed and the type of the dyeing material, the input undercolor type, and the coordinate data corresponding to the inputted type of the dyeing material And a controller for obtaining an estimated coordinate value of a color space when the hair of the person to be dyed is dyed with the type of dyeing material, and the face of the hair color corresponding to the obtained estimated coordinate value And a display unit for displaying an image on a screen.

According to the simulation system of the present invention, the control unit uses the input under color type and the coordinate data corresponding to the input type of the dye material, and uses the type of dye material to dye the hair of the person to be dyed. The estimated coordinate value of the color space in the case of dyeing is obtained, and the display unit displays a face image of the hair color corresponding to the obtained estimated coordinate value on the screen.
For this reason, if the system user (for example, a salon clerk) inputs the type of the under color of the person to be dyed (for example, the customer) and the type of the dyeing material to be used, appropriate dyeing reflecting the under color of the person to be dyed The later hair color can be displayed. Therefore, the first object is achieved.

(2) In the simulation system of the present invention, it is preferable that the input unit can input a melanin type including red, standard, and yellow as the under color type.
In this case, if the control unit obtains the estimated coordinate value by correcting the coordinate data corresponding to the type of the input staining material based on the input melanin type, the object to be stained Appropriately dyed hair color reflecting the melanin type of the person's under color can be displayed.

(3) In the simulation system of the present invention, the storage unit stores the coordinate data for each under-color lightness level, and the input unit inputs the lightness level as the under-color type. Preferably it is possible.
In this case, if the control unit obtains the estimated coordinate value by extracting the coordinate data corresponding to the type of the input staining material and the input brightness level, Appropriate dyed hair color reflecting the lightness level of the under color can be displayed.

(4) Further, in the simulation system of the present invention, the storage unit stores a correction coefficient for the coordinate value of the color space when mixing different types of the dyeing material for each type of the dyeing material, It is preferable that the input unit can input the type of the dyeing material to be mixed and the mixing ratio thereof.
In this case, if the control unit obtains the estimated coordinate value of the dyed material after mixing based on the coordinate data, the correction coefficient, and the mixing ratio of the input type of the dyed material, Even when dyeing materials are mixed, the hair color after dyeing can be appropriately displayed. Therefore, the second object is achieved.

(5) In the simulation system of the present invention, the control unit stores the face image of the hair color corresponding to the obtained estimated coordinate value in the storage unit together with related information used to obtain the estimated coordinate value. It is preferable to register.
In this way, the registered face image and the related information (such as the type of dyeing material used and its mixing ratio) are read from the storage unit and presented to the person to be dyed, and the hair after dyeing simulated in the past The color face image and the related information can be immediately proposed to the person to be dyed.

(6) The simulation method of the present invention is an invention that captures the above-described processing performed by the simulation system of the present invention as a method invention. Therefore, the simulation method of the present invention has the same effects as the simulation system of the present invention.
(7) The computer program of the present invention is a computer program for causing a computer to execute the above-described processing performed by the simulation system of the present invention. Therefore, the computer program of the present invention has the same effects as the simulation system of the present invention.

As described above, according to the present invention, it is possible to display an appropriate dyed hair color that reflects the undercolor of the person to be dyed, so that it is possible to perform counseling for coloring appropriate for the person to be dyed.
Further, according to the present invention, even when dyeing materials are mixed, the hair color after dyeing can be appropriately displayed, so that it is possible to easily make proposals in accordance with various preferences of the person to be dyed.

1 is an overall configuration diagram of a simulation system according to an embodiment of the present invention. It is a block diagram which shows the structural example of a server computer. It is a structure diagram of a database of image files. It is a figure which shows the coordinate table which defined the standard coordinate value for every dyeing | staining material. (A) is a table which shows the color coefficient for every color tone of dyeing | staining material, (b) is a table which shows the lightness coefficient for every lightness level of dyeing | staining material. It is a flowchart which shows the content of the simulation process. It is a figure which shows the start screen of a client terminal. It is a figure which shows the setting screen of the style of the terminal. It is a figure which shows the setting screen of the under color of the terminal. It is a figure which shows the addition / selection screen (before correction | amendment process) of the recipe of the terminal. It is a figure which shows the color selection screen (before selection) of the terminal. It is a figure which shows the material display screen of the terminal. It is a figure which shows the color selection screen (after selection) of the terminal. It is a figure which shows the addition / selection screen (after correction | amendment process) of the recipe of the terminal. It is a figure which shows the storage setting screen of the collection of the terminal. It is a figure which shows the list display screen of the collection of the terminal. It is a figure which shows the detailed display screen of the collection of the terminal.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Overall system configuration]
FIG. 1 is an overall configuration diagram of a simulation system to which the present invention can be preferably applied.
As shown in FIG. 1, the simulation system of the present embodiment includes a server computer 2 (hereinafter sometimes simply referred to as “server 2”) that is communicably connected through a public communication network 1 such as the Internet, and 1 or A plurality of client terminals 3 are provided.

The server computer 2 comprises a web server operated by a dye material manufacturer or the like, and has a service program that provides objects such as HTML and images through a web browser common to the client terminal 3.
The service program of the present embodiment is a web application program (hereinafter simply referred to as “application”) that presents a face image when dyed using a predetermined dyeing material in accordance with conditions input by the client terminal 3 through a web browser. ).

The client terminal 3 includes a tablet terminal 3A, a desktop personal computer 3B, a notebook personal computer 3C, or the like housed in a hair salon.
These client terminals 3 are communicably connected to the public communication network 1 through a wireless or wired LAN, access a server 2 application by inputting a predetermined URL, and an ID number notified by the server 2 operator. And a password can be used to receive a predetermined simulation service using the application.

[Configuration of server computer]
FIG. 2 is a block diagram illustrating a configuration example of the server computer 2.
As shown in FIG. 2, the server computer 2 of this embodiment includes a control unit 21, a communication unit 22, an input device 23, a display 24, and a storage unit 25.
Among these, the control unit 21 includes a plurality of microprocessors that electronically control the other units 22 to 25. The storage unit 25 includes a ROM and a RAM that can write and read various data.

The communication unit 22 includes a communication interface capable of Internet communication. The communication unit 22 sends the HTTP request received from the client terminal 3 to the control unit 21, and transmits the HTTP response received from the control unit 21 to a predetermined client terminal 3.
The input device 23 includes a human interface such as a mouse or a keyboard. The display 24 is configured by, for example, a cathode ray tube display, a liquid crystal display, a plasma display, an organic EL display, or the like controlled by the drawing function of the control unit 21.

The control unit 21 reads out and executes the application stored in the storage unit 25 to execute processing according to the HTTP request acquired from the predetermined client terminal 3, and transmits an HTTP response as a processing result to the communication unit 22 to transmit.
The storage unit 25 includes a program storage area for storing the application, a temporary storage area for data to be used, and a database DB1 for the image file F and a database DB2 for the dyeing material necessary for the service of the application. .

[Image file database]
FIG. 3 is a structural diagram of the database DB1 of the image file F.
As shown in FIG. 3, the database DB1 includes a large number of image files F created by applying different hair colors to the hair parts of the same face image (in this embodiment, the “model” face image shown in FIG. 8). The data structure is such that a large number of image files F are arranged three-dimensionally for each coordinate value (hereinafter referred to as “HSB value”) of the hair color HSB space.

That is, the hue H of the HSB space is divided into a numerical range of 0 to 360 for each predetermined value (for example, 1.0), and the saturation S and the lightness B are set to a predetermined value (for example, the numerical range of 0 to 100). 1.0), and an image file F of a face image of the same model photographed with a predetermined hairstyle is stored for each HSB value thus divided.
In the present embodiment, since a plurality of hairstyle face images can be selected, the database DB1 shown in FIG. 3 exists for each selectable hairstyle model.

[Database of dyeing materials]
The staining material database DB2 includes a coordinate table CT shown in FIG. 4 in which coordinate data for each usable staining material is defined.
This coordinate table CT includes a trade name of a usable dyeing material in an entry. In each entry, coordinate data in the RGB space for each under color (hereinafter referred to as “RGB data”) is recorded.

In FIG. 4, “standard” means that the melanin level is a standard color that is neither red nor yellow, and “LV” means the lightness level of the hair. The lightness level is an index that describes the lightness of the hair in 15 stages so that the lightness becomes higher as the value increases. Here, the average black hair of the Japanese is represented by “4LV” and is maximized by decolorization. The brightened state is represented by “15LV”.
Each RGB data included in this coordinate table CT measures the RGB value of the hair color when it is actually dyed into a standard color hair (however, the lightness level is divided into 5 levels) using a specific dyeing material. The measured values are converted into data.

In other words, in the coordinate table CT of the present embodiment, the melanin level of the under color is fixed to “standard”, and each of the five lightness levels of “14 LV”, “12 LV”, “10 LV”, “8 LV”, and “4 LV” is used. In addition, RGB data of the hair color after dyeing is recorded.
Note that “yak (white background)” in FIG. 4 is RGB data when a dyeing material is applied to a white background object. As is well known, since RGB data is an additive color mixture, the R value, the G value, and the B value are all white when the maximum value (255) and black when the minimum value (0).

In the example of FIG. 4, only two types of dyeing materials (8BA and 8R) are entered due to the limitation of the paper surface range. However, the types of dyeing materials that can be used in the system of this embodiment are as shown in FIG. , A total of 15 types of shades and lightness from 2 to 14 are included.
In the system of the present embodiment, as the type name (trade name) of the dyeing material, the hue is described and displayed after the brightness. For example, the type name of a dyeing material having a hue of “N (Natural)” and a lightness of “10” is “10N”.

Further, the staining material database DB2 includes two tables T1 and T2 that define correction coefficients for coordinate data in the case of mixing staining materials. These two tables include a table T1 shown in FIG. 5A and a table T2 shown in FIG.
Among them, the table T1 in FIG. 5A defines a “color coefficient” that is a correction coefficient for the hue of the dyeing material, and the table T2 in FIG. 5B shows the lightness of the dyeing material. A “lightness coefficient” that is a correction coefficient is defined.

For example, when preparing a mixed material by mixing two different color dye materials, if the color of one dye material has a strong influence on the color of the mixed material, it is desirable to mix both at the same volume ratio. It is not possible to obtain a mixed material of shades of.
In view of this, for each color name of the usable dyeing material, the degree of influence on the color after mixing is quantified by experiments in advance, and the numerical values are summarized for each color name of the stock solution in the table T1. In addition, the value of the color coefficient increases as the stock solution has a smaller influence on the shade of the mixed color.

Also, when preparing a mixed material by mixing two different color dye materials, if the lightness level of one dye material has a strong effect on the lightness level of the mixed material, they can be mixed at the same volume ratio. A mixed material with a desired brightness level cannot be obtained.
Therefore, the table T2 is a table in which the degree of influence on the lightness level after mixing is numerically determined in advance by experiment for each lightness level of the usable staining material, and the numerical values are summarized for each lightness level of the stock solution. It should be noted that the value of the brightness coefficient decreases as the brightness level of the stock solution increases.

[Contents of simulation processing]
FIG. 6 is a flowchart illustrating a procedure of simulation processing executed by the control unit 21 of the server computer 2. 7 to 17 show display screens of the client terminal 3 displayed in the simulation processing procedure.
Hereinafter, the processing content of the simulation system of this embodiment will be described with reference to these drawings. In the following, it is assumed that the client terminal 3 is a tablet terminal 3 </ b> A capable of inputting an icon displayed on the screen with a finger or a touch pen.

(Start processing)
First, the user of the tablet terminal 3 </ b> A who is a salon clerk operates the web browser to access the application of the server 2.
Thereafter, when the user inputs the ID number and password notified from the server operator on an input screen (not shown), the control unit 21 of the server 2 executes a system start process (step ST1 in FIG. 6). The start screen shown in FIG. 7 is displayed on the tablet terminal 3A.

The start screen in FIG. 7 includes a start icon C1, a move icon C2 to a collection list display screen (FIG. 16), a system operation method, and a move icon C3 to a help screen (not shown). .
When the user touches the start icon C1, the control unit 21 of the server 2 shifts to a style selection process (step ST2 in FIG. 6), and displays the style selection screen shown in FIG. 8 on the tablet terminal 3A.

  When the user touches the move icon C2, the control unit 21 of the server 2 shifts to the collection reference process (step ST6 in FIG. 6), and displays the collection list display screen shown in FIG. 16 on the tablet terminal 3A. Display. The collection reference process will be described later.

[Style selection process]
The style setting screen in FIG. 8 includes a thumbnail C4 displaying a plurality of face images with different hairstyles, an enlarged display portion C5 for enlarging the selected face image, a determination icon C6, and a return icon C7. It is.
The plurality of face images included in the thumbnail C4 are previously selected from the image files F included in the database DB1, and when the user touches and selects one of the plurality of face images, the control unit 21 displays the selected face image on the enlarged display unit C5.

When the user touches the determination icon C6 after the above selection, the control unit 21 temporarily stores the image file F of the face image being selected in the storage unit 25 as a determination image, and sets an under color setting process (see FIG. 6, the process proceeds to step ST3) to display the under color setting screen shown in FIG. 9 on the tablet terminal 3A.
A return icon C7 shown in FIG. 8 is an icon for returning the processing to the non-selected state of the style.

[Under color setting process]
The under color setting screen in FIG. 9 includes an enlarged display portion C8 for a decision image, a melanin type selection portion C9, a lightness level selection portion C10, a decision icon C11 and a return icon C12.
In the enlarged display portion C8, the determined image temporarily stored in the storage unit 25 determined in the style selection process is displayed in an enlarged manner.

The melanin type selection unit C9 includes a setting button for setting the melanin type of the hair of the person to be dyed who is a customer of the hair salon. In the example of FIG. 9, there are three types of setting buttons “strong redness”, “standard hair”, and “strong yellowishness” in order from the top.
Further, the lightness level selection unit C10 includes a setting button for setting the lightness level of the hair of the person to be dyed. In the example of FIG. 9, there are five types of setting buttons “14 level”, “12 level”, “10 level”, “8 level”, and “4 level” in order from the top.

The user visually observes the undercolor of the person to be dyed and touches a setting button corresponding to the melanin type and brightness level closest to the observation result, thereby inputting the setting of the undercolor of the person to be dyed.
The control unit 21 of the server 2 performs coordinate data correction processing considering the under-colored melanin type according to the input type to the melanin type selection unit C9. Further, the control unit 21 performs a process of selecting coordinate data corresponding to the lightness level of the under color according to the input type to the lightness level selection unit C10. Details of these processes will be described later.

When the determination icon C11 shown in FIG. 9 is operated, the control unit 21 of the server 2 temporarily stores the input undercolor melanin type and lightness level in the storage unit 25, and also adds and selects a recipe. (Step ST4 in FIG. 6), and a recipe addition / selection screen (before correction) shown in FIG. 10 is displayed on the tablet terminal 3A.
The return icon C12 shown in FIG. 9 is an icon for returning the under-colored melanin type and the lightness level to the non-setting state.

[Recipe selection / addition processing]
The recipe addition / selection screen in FIG. 10 includes an enlarged display portion C13 of the determined image, an original recipe addition portion C14, and a movement portion C15 to another screen.
In the enlarged display portion C13, the determined image temporarily stored in the storage unit 25 determined in the style selection process is displayed in an enlarged manner. In addition, in the enlarged display portion C13 of FIG. 10, not only the front (face image) of the model head but also the images of the side and the back are displayed as thumbnails, and the image of one surface selected from the thumbnails is enlarged and displayed. The

The addition part C14 for the original recipe includes a selection button for “recommended recipe” and an addition button for “user original recipe” that the user intends to simulate from now on.
Among these, when the user touches the “view details” portion of “recommended recipe”, a detail screen (not shown) of a recipe recommended by the operator of the server 2 is displayed on the tablet terminal 3A. When the user touches the selection button of “user original recipe”, the control unit 21 displays the color selection screen (before selection) of FIG. 11 on the tablet terminal 3A.

The color selection screen in FIG. 11 includes two material selection units C16 and C17 arranged on the left and right, a color name display unit C18, a determination icon C19, and a return icon C20.
Of the two material selection units C16 and C17, the left material selection unit C16 is a portion for selecting one color (A color) of the dyeing material to be mixed, and the right material selection unit C17 is the mixed dyeing material. The other color (B color) is selected. Each of these material selection sections C16 and C17 includes a setting button for selecting whether or not to select A color or B color, a display section for a product name (name of dyeing material) when selected, and a selection case. A mixing ratio input section and a clear button are included.

Here, when the user selects color A, the control unit 21 of the server 2 displays the color display screen of FIG. 12 on the tablet terminal 3A.
This color display screen has a two-dimensional matrix structure in which a plurality of types of dye materials contained in the database DB2 are arranged in the width direction for each hue and in the vertical direction for each brightness. When the user touches a specific color portion of the color display screen, a dye material to be selected for A color can be selected.

In the color display screen of FIG. 12, for example, when the user selects a dyeing material of “8N” as A color, the control unit 21 of the server 2 displays the A color material selection unit of the color selection screen as shown in FIG. In C16, the color of the selected “8N” dyeing material and its trade name (in this case, “8N”) are displayed.
In addition, even when the user selects B color on the color display screen of FIG. 12, the control unit 21 of the server 2 displays the color display screen of FIG. 12 on the tablet terminal 3A.

In the color display screen of FIG. 12, for example, when the user selects a dyeing material of “6Be” as the B color, the control unit 21 of the server 2 displays the B color material selection unit of the color selection screen as shown in FIG. In C17, the color of the selected dyeing material “6Be” and its product name (in this case, “6Be”) are displayed.
Further, as shown in FIG. 13, the color name display portion C18 of the color selection screen displays the product name of the dyeing material selected by the A color and the B color and the mixture ratio.

When the user touches the determination icon C19 shown in FIG. 13 after the types of A and B colors and the mixing ratio thereof are input, the control unit 21 of the server 2 causes the A and B color material selection units C16 and C17. The type and the mixing ratio of the dyeing material selected in step 1 are temporarily stored in the storage unit 25.
Further, the control unit 21 performs a process for calculating an estimated RGB value, which will be described later, and a process for converting the estimated RGB value into an HSB value based on the type of the selected staining material. And the control part 21 specifies the image file F corresponding to the calculated | required HSB value.

  Note that the user does not necessarily need to select two colors, A and B, and only one of the A and B colors is selected and a determination icon C19 is touched to perform a simulation with a single color. be able to.

(Calculation processing of estimated RGB values)
When the control unit 21 of the server 2 performs the following first to third processes in order, the hair of the person to be dyed is dyed with the dyeing material selected as the A or B color or a mixture of both. The estimated RGB value (estimated coordinate value of the color space) is obtained.

1) First process: Extraction of RGB data based on lightness level First, the control unit 21 of the server 2 extracts RGB data corresponding to the type and brightness level of the selected staining material from the database DB2, and extracts the extracted RGB data. Data is set to a temporary estimated RGB value.
When both the A color and B color dye materials are selected, the provisional estimated RGB values are set for both of the dye materials.

2) Second Process: Data Correction Using Melanin Type Next, the control unit 21 of the server 2 performs a data correction process on the provisional estimated RGB value according to the selected undercolor melanin type. This data correction process includes the following processes a) to c) according to the type of the selected melanin type.
a) When the melanin type is “standard hair” The temporary estimated RBG value is adopted as the estimated RBG value as it is. That is, the melanin type correction is not performed.

b) When the melanin type is “strong redness” The provisional estimated RGB value is corrected by the following equation.
R value = provisional R value− (255−provisional R value) × 0.04
G value = provisional G value− (255−provisional G value) × 0.07
B value = provisional B value− (255−provisional B value) × 0.07

c) When the melanin type is “strong yellowish” The provisional estimated RGB value is corrected by the following equation.
R value = temporary R value + (255−temporary R value) × 0.07
G value = temporary G value + (255−temporary G value) × 0.07
B value = provisional B value + (255−provisional B value) × 0.04

In the correction equation of b), the reason why the R value correction coefficient (0.04) is set smaller than the G value and B value correction coefficient (0.07) This is because the fluctuation range of the R value that affects the red color is reduced below the G value and the B value in consideration of the strength. The reason why the whole numerical value is set to be smaller than that of the standard hair is to make the lightness level slightly lower than that of the standard hair.
Similarly, in the correction formula of c), the reason why the correction coefficient for the B value (0.04) is set smaller than the correction coefficient for the R value and the G value (0.07) is that the yellow color of the under color This is because the fluctuation range of the B value that affects yellow is reduced below the R value and the G value. The reason why the overall numerical value is set higher than that of the standard hair is to make the lightness level slightly higher than that of the standard hair.

3) Third processing: Calculation of RGB values in the case of two-liquid mixing In addition, when both the A color and the B color are selected, the control unit 21 of the server 2 selects the selected A color and B color. The color coefficient and the lightness coefficient corresponding to are specified from the database DB2, and the RGB values of the respective colors obtained by the first and second processing are mixed using the color coefficient and the lightness coefficient and the mixing ratio set by the user. Convert to RGB value of color.
This conversion formula is as follows. In this conversion formula, the RGB values of the A color and the B color are distributed using the color coefficients of both colors, the lightness coefficient, and the mixing ratio as weights to obtain the RGB values of the mixed color.

R value of mixed color =
{(A color R value × A color coefficient × A color brightness coefficient × A color mixing ratio) + (B color R value × B color coefficient × B color brightness coefficient × B color mixture) ratio)}
÷ {(A color coefficient x A lightness coefficient x A color mixture ratio) + (B color coefficient x B lightness coefficient x B color mixture ratio)}
However, the B value and G value of the mixed color are the same as in the above formula.

(Coordinate conversion process)
Next, the control unit 21 of the server 2 converts the calculated estimated RGB value into an HSB value that is a color space of the image file F. This conversion formula is as follows.

Further, the control unit 21 of the server 2 searches for an image file F having a color closest to the HSB value after conversion from among a large number of image files F included in the selected style. This search can be performed, for example, by executing a file search by a binary search for each of the H value, the S value, and the B value.
Then, the control unit 21 of the server 2 displays the searched image file F on the recipe addition / selection screen (after the correction process) shown in FIG. Therefore, the hair color of the face image displayed on the enlarged display portion C13 in FIG. 14 is the hair color when dyed with the selected dyeing material.

  In the recipe addition / selection screen of FIG. 14, when the user touches the “Save to Collection” setting button of the moving unit C15, the control unit 21 of the server 2 performs collection saving setting processing (step ST15 of FIG. 6). Then, the collection saving setting screen shown in FIG. 15 is displayed on the tablet terminal 3A.

[Collection save setting process]
The collection save setting screen of FIG. 15 includes an enlarged display portion C21 of the image file F, a color information display portion C22, a save icon C23, and a return icon C24.
In the enlarged display portion C21, the image file F reflecting the dyed hair color determined in the recipe addition / selection process is enlarged and displayed.

In the color information display section C22, from the top, “save date”, “collection name”, “color name”, “recipe” (mixed color material and mixing ratio), “under color setting”, and “comment” Column is provided.
Among these, a name arbitrarily determined by the user can be input in the collection name column, and an arbitrary document for the color to be added can be input in the comment column. When the user touches the save icon C23, the control unit 21 of the server 2 registers the image file F and the related information (collection name, recipe, etc.) in the storage unit 25. The return icon C24 is used to return the process to the previous screen.

(Collection reference processing)
FIG. 16 shows a collection list display screen. This list display screen is displayed when the move icon C2 in FIG. 7 or the save icon C23 in FIG. 14 is touched.
In the collection reference screen of FIG. 16, a plurality of display portions of the image file F stored after the simulation are arranged. When the user touches any one of the plurality of display units, the control unit 21 of the server 2 causes the tablet terminal 3A to display a detailed display screen of the collection illustrated in FIG.

In addition to the enlarged display portion C21 and the color information display portion C22 of the image file F, a transmission icon C25, a change icon C26, and a return icon C27 are provided on the detailed display screen of the collection in FIG.
When the user touches the transmission icon C25, the control unit (not shown) of the tablet terminal 3A starts up the mail software, and generates an e-mail attached with a link address to the display screen of the image file F being displayed. . The change icon C26 is operated when the user changes the name of the collection or the content of the comment. The return icon C27 is used to return the process to the previous collection reference screen (FIG. 16). Is.

[Effect of simulation system]
As described above, according to the simulation system of the present embodiment, the control unit 21 of the server 2 specifies the RGB specified from the type of the under color (melanin type or brightness level) and the type of dyeing material input to the tablet terminal 3A. Using the data, the estimated RGB value when the hair of the person to be dyed is dyed with the type of dyeing material is obtained, and the tablet terminal 3A displays the image file F of the hair color corresponding to the obtained estimated RGB value on the screen. To do.

  For this reason, if the salon clerk who is the user of the system inputs, for example, the type of the under color of the person to be dyed who is the customer and the type of the dyeing material to be used to the tablet terminal 3A, the under color of the person to be dyed is appropriately reflected. The dyed hair color can be displayed on the tablet terminal 3A. Therefore, it is possible to perform coloring counseling appropriate for the person to be dyed.

  In addition, according to the simulation system of the present embodiment, even when dyeing materials are mixed, the hair color after dyeing can be appropriately displayed, so that it is possible to easily make proposals according to the various preferences of the person to be dyed, and usually The user can easily verify experimentally combinations of dye materials and undercolors that have never been tried, and this can be used to improve the user's knowledge and skills.

[Other variations]
The above-described embodiments disclosed herein are illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, and includes all modifications that are within the scope of the claims and equivalents.
For example, in the above-described embodiment, RGB data extraction (first processing) based on the lightness level and data correction using the melanin type (second processing) are performed when obtaining the estimated RGB value in consideration of the under color. However, only one of these processes may be performed.

In the above-described embodiment, the dyed color of each staining material is converted into data using RGB data, but may be converted into data using coordinate data in another color space such as CMY or HSB.
In the above-described embodiment, the simulation system including the server computer 2 and the client terminal 3 is illustrated. However, the simulation system of the present invention can be implemented by a single computer.

  Furthermore, in the above-described embodiment, the image file F is a face image of a model photographed in advance. However, a hair color after simulation may be combined with photograph data of a person to be dyed photographed locally. .

1 Public communication network 2 Server computer 3 Client terminal (input unit, display unit)
21 Control Unit 22 Communication Unit 23 Input Device 24 Display 25 Storage Unit

Claims (6)

A hair color simulation system that displays a screen image of a face after dyeing hair,
A storage unit for storing the coordinate data of the color space after hair dyeing for each type of dyeing material;
An input unit capable of inputting the type of the undercolor of the person to be dyed and the type of the dyeing material;
Using the input under color type and the coordinate data corresponding to the input dye material type, the color space when the subject person's hair is dyed with the dye material of that type A control unit for obtaining an estimated coordinate value;
A display unit that displays the face image of the hair color corresponding to the estimated coordinate value obtained;
Equipped with a,
The storage unit stores the coordinate data for each lightness level of the under color,
The input unit can input the brightness level as a type of the under color,
The said control part calculates | requires the said estimated coordinate value by extracting the said coordinate data corresponding to the kind of the said dyeing | staining material inputted, and the said brightness level inputted, The hair color simulation system characterized by the above-mentioned . The input unit can input a melanin type including red, standard, and yellow as the under color type,
The hair color simulation according to claim 1, wherein the control unit obtains the estimated coordinate value by correcting the coordinate data corresponding to the type of the input dye material based on the input melanin type. system. The storage unit stores, for each type of the staining material, a correction coefficient of the coordinate value of the color space when mixing the different types of the staining material,
The input unit is capable of inputting the type of the dye material to be mixed and the mixing ratio thereof,
Wherein the control unit, the coordinate data of the input type of the dyeing materials, based on the correction coefficient and the mixing ratio, according to claim 1 or 2 obtains the estimated coordinates of the dyed material after mixing Hair color simulation system. Wherein the control unit, the face image of the hair color which corresponds to the estimated coordinate values determined, any one of claims 1 to 3 registered in the storage unit along with the relevant information used to determine the estimated coordinate value The hair color simulation system according to Item 1. A hair color simulation method for displaying a face image after dyeing hair on a screen,
A first step of storing coordinate data of a color space after hair dyeing for each type of dyeing material;
A second step of inputting the type of the undercolor of the person to be dyed and the type of the dyeing material ;
Using the input under color type and the coordinate data corresponding to the input dye material type, the color space when the subject person's hair is dyed with the dye material of that type a third step asking you to estimate coordinates,
A fourth step of displaying the face image of the hair color corresponding to the estimated coordinate value obtained on the screen ,
In the first step, the coordinate data is stored for each lightness level of the under color,
In the second step, the lightness level can be input as a type of the under color,
In the third step, the estimated coordinate value is obtained by extracting the coordinate data corresponding to the type of the inputted dyeing material and the inputted lightness level, and a hair color simulation method characterized in that . A computer program for causing a computer to execute a hair color simulation process for displaying a face image after hair dyeing on a screen,
A first step of storing coordinate data of a color space after hair dyeing for each type of dyeing material;
A second step of inputting the type of under color staining subject and the type of the dyeing materials,
Using the input under color type and the coordinate data corresponding to the input dye material type, the color space when the subject person's hair is dyed with the dye material of that type A third step for obtaining an estimated coordinate value;
A fourth step of hair color of the face image screen display corresponding to the estimated coordinate values determined, only including,
In the first step, the coordinate data is stored for each lightness level of the under color,
In the second step, the lightness level can be input as a type of the under color,
In the third step, the estimated coordinate value is obtained by extracting the coordinate data corresponding to the inputted type of the dyed material and the inputted lightness level .

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