WO2019117146A1 - Reference-front-surface-setting device, measurement device, spectacles selection device, medical card creation device, measurement method, spectacles selection method, and medical card creation method - Google Patents

Abstract

Provided are a device for setting a reference front surface of a three-dimensional facial image with which it is possible to accurately measure shape data of a face, and a device for selecting spectacles with which it is possible to easily select spectacles that a user can comfortably wear. This device for setting a reference front surface comprises: an image creation unit for creating a three-dimensional facial image of the face (A1) of a user (A) on the basis of scan data for the face (A1); and a setting unit for setting, as a reference front surface, the direction of the three-dimensional facial image when, in x-, y-, and z-axes orthogonal to each other, the surface of the center (Q1, Q2) of the left and right pupils of the three-dimensional facial image is positioned on the same x-y plane, and the midline of the three-dimensional facial image is matched with the y-axis direction.

Description

Reference front setting apparatus, measuring apparatus, glasses selecting apparatus, chart creating apparatus, measuring method, glasses choosing method, and chart creating method Cross-reference to related applications

The present application is based on Japanese application numbers (Japanese Patent Application No. 2017-241202) filed on Dec. 15, 2017 and Japanese Application Nos. (Japanese Patent Application No. 2018-153708 filed on August 17, 2018). The contents of the description are incorporated herein by reference.

The present disclosure relates to a reference front setting apparatus, a measurement apparatus, an eyeglass selection apparatus, a medical chart generation apparatus, a measurement method, an eyeglass selection method, and a medical chart generation method, and more specifically, a cubic used in measuring shape data of a face. The present invention relates to an apparatus for setting a reference front of an original face image, an apparatus for selecting eyeglasses to which a user can comfortably wear the apparatus, and an apparatus for creating a medical chart in which shape data of a face using the apparatus.

In the field of eyeglasses, development of shapes and colors (patterns) of eyeglasses is carried out daily for the purpose of functional improvement and design improvement. For this reason, at present, there are many glasses having different shapes and colors.
On the other hand, users who buy glasses do not understand the size of their face and, on the other hand, they may find their favorite glasses and glasses that fit themselves because there are too many glasses It is a difficult situation.
Furthermore, since each store does not have an inventory of all the glasses, there is a disadvantage that the desired glasses can not be tried on the spot.
Also, the face is not necessarily symmetrical, and there is no correlation in the dimensions of the distance between the right and left pupils of the face and the positions of the left and right ears. That is, there are cases where the interpupillary distance is narrow but the interaural width is wide, etc., and because the height of the ear relative to the position of the pupil is high or low, even if the user tries on the glasses It is difficult to determine whether or not the glasses are optimal.

On the other hand, for example, when a user orders glasses, a simulation method is known in which the wearing condition of the user's face image and the glasses model is displayed on the computer screen, and the glasses design and wearing condition are displayed as a stereoscopic image. (See, for example, Patent Document 1). In this simulation method, the three-dimensional eye position of the subject is measured, and the three-dimensional relative position is calculated based on this.
There is also known a system for generating a model of a user-specific eyewear product (eyeglasses) (see, for example, Patent Document 2). In such a system, one or more of a plurality of features including the pupil, eyes, nose, mouth, ears, face, eyebrows, hair, etc. are detected, and the pupil of the user is detected and the center of each pupil is detected. The landmark is placed on the

Patent No. 4232166 Patent No. 6099232

By the way, in the simulation method described in Patent Document 1, when measuring the shape data of the face, the position of the eye is used as a reference, and in the system described in Patent Document 2, the shape data of the face is calculated. When measuring, the center of the pupil is a landmark.
However, because the positions of the left and right pupils (or eyeballs) are not necessarily symmetrical in reality, as viewed from the midline in the face, in both cases based on this, accurate measurement of the face is necessary. It can not be said that it can be done.
In particular, when measuring the face for making the glasses, when this is used as a reference, the glasses may be worn at a position shifted from the center of the face.
Further, in both cases based on this, the degree of depression of the face is not considered, so there is a disadvantage that the error becomes larger as it gets away from the left and right pupils (or eyeballs).

The present disclosure has been made in view of the above circumstances, and facilitates a setting apparatus of a reference front of a three-dimensional face image capable of accurately measuring shape data of a face, and glasses which a user can comfortably wear An object of the present invention is to provide an apparatus for selecting glasses that can be selected, and an apparatus for creating a medical chart in which shape data of a face portion is described.

The inventors of the present invention have conducted intensive studies to solve the above problems, and by aligning the positions in the Z-axis direction of the surfaces of the centers of the left and right pupils of the three-dimensional face image, and matching the midline with the Y-axis, It has been found that the above problems can be solved, and the present disclosure has been completed.

The present disclosure includes: (1) a first step of scanning a user's face from around the face, and a second step of producing a three-dimensional face image of the face based on scan data acquired by scanning When the vertical direction is Y axis, the horizontal direction orthogonal to the Y axis is X axis, and the front to back direction orthogonal to the X axis and Y axis is Z axis, the surface of the center of the right and left pupils of the three-dimensional face image And third step of aligning the positions in the Z-axis direction and setting the orientation of the three-dimensional face image corrected so that the midline in the three-dimensional face image to coincide with the Y-axis direction as a reference front. The second and third steps reside in a method of setting a reference front of a three-dimensional face image to be executed by a computer.

The present disclosure is (2) a reference front view which is a method of selecting glasses using the method of setting a reference front of a three-dimensional face image according to the above (1), which is a two-dimensional image of the reference front of a three-dimensional face image. Measure the distance in the X axis direction from the YZ plane including the midline to the center of the left eye pupil and the distance in the X axis direction from the YZ plane including the midline to the center of the right eye pupil Using a reference left view, which is a two-dimensional image in a state in which the three-dimensional face image is rotated 90 degrees clockwise about the Y axis from the reference front in one measurement step, the left ear from the XY plane including the center of the pupil of the left eye Using the reference right view, which is a two-dimensional image in the state in which the distance in the Z-axis direction to the upper base of Z and the three-dimensional face image is rotated 90 degrees counterclockwise around the Y axis from the reference front The upper root of the right ear from the XY plane including the center of the pupil Distance in the direction of the Z-axis, the reference elevation view, the distance in the direction of the X-axis from the YZ plane including the midline to the base of the upper side of the left ear, and YZ including the midline Using the third measurement step of measuring the distance in the X-axis direction from the plane to the upper base of the right ear, and the reference left view, Y from the XZ plane including the center of the pupil of the left eye to the upper base of the left ear Fourth measurement step for measuring the axial distance and the distance in the Y-axis direction from the XZ plane including the center of the right eye pupil to the base of the upper part of the right ear using the reference right view; The fifth measurement step of measuring the distance in the Y-axis direction between the center of the pupil of the left eye and the center of the pupil of the right eye using the figure, and at least one measurement step selected from the group consisting of Based on The fourth step of selecting a glasses image of glasses suitable for the user from a library including a large number of glasses images of glasses, the measuring step and the fourth step being executed by the computer, the glasses of suitable glasses The present invention relates to a method of selecting glasses for displaying an image on a display unit of a computer.

In the present disclosure, (3) the measurement step includes the first measurement step, the second measurement step, the third measurement step, the fourth measurement step, the fifth measurement step, and the reference front view, and the upper root of the left ear The glasses according to the above (2), which is at least one selected from the group consisting of a sixth measurement step of measuring the distance in the Y-axis direction between the XZ plane containing Y and the XZ plane containing the upper base of the right ear It depends on the selection method.

The present disclosure resides in the eyeglass selection method according to the above (3), further including a chart creation step of creating a chart based on the measurement value obtained in the (4) measurement step.

The present disclosure relates to (5) a fifth step of combining the three-dimensional face image with the three-dimensional face image of the suitable eyeglass and the three-dimensional face image of the suitable eyeglass as the three-dimensional eyeglass-mounted face image Further, the fifth step is executed by the computer, and the three-dimensional glasses mounted face image displayed on the display unit is rotatable on the display unit by the operation of the operation unit of the computer (2 The method for selecting glasses according to any one of the above 4) to (4).

In the present disclosure, (6) when there is another three-dimensional glasses image different in shape or color as the three-dimensional glasses image of suitable glasses, the face portion is a three-dimensional glasses mounted face image based on the operation by the operation unit. There exists the selection method of the spectacles of the said (5) description with which the mounted | worn three-dimensional spectacles image is substituted to another three-dimensional spectacles image.

The present disclosure is (7) a method of creating a medical chart using the method of setting a reference front of a three-dimensional face image according to the above (1), the reference front view being a two-dimensional image of the reference front of a three-dimensional face image. Measure the distance in the X axis direction from the YZ plane including the midline to the center of the left eye pupil and the distance in the X axis direction from the YZ plane including the midline to the center of the right eye pupil Using a reference left view, which is a two-dimensional image in a state in which the three-dimensional face image is rotated 90 degrees clockwise about the Y axis from the reference front in one measurement step, the left ear from the XY plane including the center of the pupil of the left eye Using the reference right view, which is a two-dimensional image in the state in which the distance in the Z-axis direction to the upper base of Z and the three-dimensional face image is rotated 90 degrees counterclockwise around the Y axis from the reference front Upper root of right ear from XY plane including center of pupil Using the second measurement step of measuring the distance in the Z-axis direction at each, the reference elevation view, the distance in the X-axis direction from the YZ plane including the midline to the upper base of the left ear, and including the midline Using the third measurement step to measure the distance in the X-axis direction from the YZ plane to the upper base of the right ear, and the reference left view, from the XZ plane including the center of the pupil of the left eye to the upper base of the left ear Fourth measurement step to measure the distance in the Y-axis direction and the distance in the Y-axis direction from the XZ plane including the center of the right eye pupil to the base of the upper part of the right ear using the reference right view And the fifth measurement step of measuring the distance in the Y-axis direction between the center of the left eye pupil and the center of the right eye pupil, and the reference front view, the XZ plane including the base of the left ear and the right With an XZ plane that includes the upper base of the ear A sixth measurement step of measuring the distance in the Y-axis direction, and at least one measurement step selected from the group consisting of: and a chart creation step of creating a chart based on the measurement value obtained in the measurement step The measurement step is executed by the computer, and the method for creating the chart is to display the chart on the display unit of the computer.

In the method of setting a reference front of a three-dimensional face image according to the present disclosure, in the first step, the user's face is scanned, and in the second step, a three-dimensional face image is produced based on the scan data. The reference front of the three-dimensional face image can be set by correcting in.
That is, in the third step, by aligning the positions in the Z-axis direction of the surfaces of the centers of the left and right pupils of the three-dimensional face image, and matching the median line in the three-dimensional face image with the Y-axis direction It can be a three-dimensional face image of a reference front facing the center and facing front. Thereby, it becomes possible to measure the shape data of the face accurately.
In particular, when measuring the face portion for making glasses, the shape data of the face portion is assumed to be centered on the face portion by using the setting method of the reference front of the three-dimensional face image of the present disclosure. It can be measured.

In the eyeglasses selection method of the present disclosure, since the three-dimensional face image of the reference front described above is used, it can be premised that the entire selected eyeglasses are aligned with the center of the face.
In addition, the first measurement step, the second measurement step, the third measurement step, the fourth measurement step, and the fifth measurement step with respect to the reference front view, the reference left view and the reference right view obtained from the three-dimensional face image of the reference front Since shape data of the face portion is measured in at least one measurement step selected from the group consisting of the above, accurate shape data of the face portion can be measured.
Then, in the fourth step, it is possible to select a glasses image of glasses suitable for the shape of the user's face based on the measurement values of the shape data of the face.
At this time, the measurement step and the fourth step can be instantaneously performed by the computer, and the glasses image of the glasses suitable for the shape of the user's face can be instantaneously displayed on the display unit of the computer .
From these facts, the user can easily find out the glasses that fit himself among a large number of glasses in a short time.

In the eyeglasses selection method of the present disclosure, at least the measurement step is selected from the group consisting of a first measurement step, a second measurement step, a third measurement step, a fourth measurement step, a fifth measurement step, and a sixth measurement step. If, for example, the sixth measurement step is performed, the glasses are received before the user's selected eyeglass product is received, even if the heights of the upper roots of the left and right ears of the user are different. You can adjust the angle of the temple.

In the eyeglasses selection method of the present disclosure, the user can be provided with a chart of the shape of his / her face by further including a chart creation step of creating a chart. As a result, the user can recognize the shape of his / her face, and can use it for the selection of glasses and the like.

In the eyeglasses selection method according to the present disclosure, by further including the fifth step, the user can view a three-dimensional eyeglass-mounted face image in a state in which the user wears suitable eyeglasses on the display unit. By rotating the three-dimensional glasses wearing face image by the operation of the unit, the wearing state can be confirmed.
In addition, when there is another three-dimensional glasses image different in shape or color as the three-dimensional glasses image of suitable glasses, the three-dimensional glasses image of the three-dimensional glasses mounted face image is replaced by another three-dimensional glasses It is also possible to replace it with an image.
By these things, it is possible to easily select one's favorite glasses from among the glasses that fit to oneself.

In the method of creating a medical record according to the present disclosure, the user is described the shape of his face by creating a medical chart based on the measurement value by the measurement step using the three-dimensional face image of the reference front described above We can provide medical records. As a result, the user can recognize the shape of his / her face, and can use it for the selection of glasses and the like.

FIG. 1 is a flowchart showing a method of setting a reference front of a three-dimensional face image according to the present embodiment. FIG. 2 is a perspective view showing a scanner used in the first step of the method of setting the reference front of a three-dimensional face image according to the present embodiment. FIG. 3 is an explanatory diagram for explaining a movement state of a scanning unit when scanning a face unit in the scanner of FIG. FIG. 4 is an explanatory diagram for explaining the first adjustment in the third step of the method of setting the reference front surface of the three-dimensional face image according to the present embodiment. FIG. 5 is an explanatory diagram for explaining a second adjustment in the third step of the method of setting the reference front surface of the three-dimensional face image according to the present embodiment. FIG. 6 is a flowchart showing a method of selecting glasses according to the present embodiment. FIG. 7 is a reference front view, a reference left view and a reference right view acquired in the measurement step of the method of selecting glasses according to the present embodiment. FIG. 8 is a chart of a chart created based on the measurement values obtained by the method of selecting glasses according to the present embodiment. FIG. 9 is an explanatory diagram for explaining selection processing of the fourth step of the method of selecting glasses according to the present embodiment. FIG. 10 is a diagram showing a first display screen displayed on the display unit in the fifth step of the method of selecting glasses according to the present embodiment. FIG. 11 is a view showing a second display screen displayed on the display unit in the fifth step of the method of selecting glasses according to the present embodiment. FIG. 12 is a block diagram for explaining an outline of the configuration of a computer in the method of selecting glasses according to the present embodiment. FIG. 13 is a flowchart showing a method of creating a chart according to the present embodiment. FIG. 14 is an explanatory diagram for explaining selection processing of the fourth step of the method of selecting glasses according to another embodiment. FIG. 15 is a block diagram for explaining an outline of the configuration of a computer in a method of selecting glasses according to another embodiment.

Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the drawings as needed.
First, an embodiment of a method of setting a reference front of a three-dimensional face image according to the present disclosure will be described.
FIG. 1 is a flowchart showing a method of setting a reference front of a three-dimensional face image according to the present embodiment.
As shown in FIG. 1, the method of setting the reference front of a three-dimensional face image according to the present embodiment includes a first step S1, a second step S2, and a third step S3, and these steps are sequentially performed. Do. The second step S2 and the third step S3 are executed by a computer described later.

The first step S1 is a step of scanning the face portion of the user from the periphery of the face portion.
FIG. 2 is a perspective view showing a scanner used in the first step of the method of setting a reference front surface of a three-dimensional face image according to this embodiment, and FIG. 3 is a diagram when scanning a face in the scanner of FIG. It is an explanatory view for explaining a movement state of a scan part of a.
As shown in FIG. 2, the scanner 10 includes a support 11, a horizontally extending support 12 attached to the support 11, and an inverted L-shaped member pivotally attached to a pivot shaft 12 a at the tip of the support 12. And a scan unit 14 attached to the lower end of the arm unit 13.
And the chair 1 is arrange | positioned under the pivot axis 12a.

In the scanner 10, when the user A sits on the chair 1, the height of the face portion A1 of the user A substantially matches the height of the scanning portion 14. The height of the chair 1 or the height of the scanning unit 14 can be appropriately adjusted in the vertical direction as needed.

In the first step S1, first, as shown in FIG. 3, the face A1 of the user A is scanned from around the face A1.
When the ear of the user A is hidden by hair or the like, it is preferable to have the ear come out. In this case, a hair fastener such as a net cap may be used. In addition, when it is difficult to put out an ear, it may be possible to use an estimation device of an ear top point such as an ear marker.
Then, in a state where the user A is sitting on the chair 1, the scan unit 14 rotates around the face portion A1 while rotating the arm unit 13 in the horizontal direction about the pivot axis. Scan continuously.
The rotation angle of the scan unit 14 is preferably 90 ° or more on the left and right with respect to the front direction of the user A, and more preferably 100 ° or more on the left and right with the front direction of the user A.

The second step S2 is a step of producing a three-dimensional face image of the face part A1 based on the scan data acquired by the scan.
In the second step S2, first, a plurality of scan data scanned by the scanner 10 are taken into a computer (not shown) connected to the scanner 10.
Then, the computer creates a three-dimensional face image of the face part A1 based on the acquired plurality of scan data.
The preparation of the three-dimensional face image in the second step S2 is performed by processing in the calculation unit based on a three-dimensional image preparation program stored in a storage unit of a computer described later. In addition, direct operation is performed by manual processing as necessary.

The third step S3 is a step of correcting the direction of the face of the three-dimensional face image produced in the second step S2 based on the first adjustment and the second adjustment, and setting it as a reference front.
In this specification, the vertical direction is taken as the Y axis, the left and right direction orthogonal to the Y axis as the X axis, and the front and back direction orthogonal to the X axis and the Y axis as the Z axis. The X-axis, Y-axis and Z-axis can be set arbitrarily, and a three-dimensional face image of a reference front surface to be described later coincides with the X-axis, Y-axis and Z-axis. That is, the X axis, the Y axis, and the Z axis are aligned with the virtual reference front three-dimensional face image. Therefore, the three-dimensional face image which is not the reference front is generally at a position inclined in either direction.

FIG. 4 is an explanatory diagram for explaining the first adjustment in the third step of the method of setting the reference front face of the three-dimensional face image according to the present embodiment, and FIG. 5 is a three-dimensional face image according to the present embodiment It is explanatory drawing for demonstrating the 2nd adjustment in the 3rd step of the setting method of the reference | standard front face.
As shown in FIG. 4, in the first adjustment, the positions in the Z-axis direction of the surfaces of the centers of the left and right pupils of the three-dimensional face image are aligned. That is, the surfaces of the centers Q1 and Q2 of the pupils of the left and right eyes are aligned so as to be located on the same XY plane. The positions in the X-axis direction and the Y-axis direction are not aligned.
Thereby, the position of the face portion A1 in the XZ plane direction, that is, the direction in which the head is shaken horizontally horizontally is determined.

As shown in FIG. 5, in the second adjustment, the three-dimensional face image is rotated so that the midline in the three-dimensional face image coincides with the Y-axis direction (X, Z is 0).
Here, the midline is a line at the center in the vertical direction when the face is viewed from the front, and may be a line set to include at least two points on the surface of the face. At least two points on the surface of the face are selected from, for example, the intercostal point P1, the deep point P2 and the subnasal point P3 on the surface of the face, but the invention is not limited to these points.
In addition, the “intercostal point” means the point that protrudes the most forward of the lightly raised portion (intercostal) above the nose base in the middle of the left and right eyebrows in the front of the face part "Nasal point" means the point projecting most forwardly of the deepest part (deep nose) at the nose root in the front of the face, and "the naso point" means the face In the front of the part, it means that the lower end of the front edge of the nasal septum projects the most forward part of the part (subnasal region) which is transferred to the subnasal (upper lip) skin surface. These three points can be relatively accurately located from the three-dimensional face image as compared to other points on the face surface. Therefore, by setting the midline using two of these three points, it becomes possible to suppress the variation when setting the midline.

Specifically, the intercostal point P1 and the subnasal point P3 of the three-dimensional face image are specified, and a straight line including the two points is created. Let this straight line be the midline.
Then, the median line is made to coincide with the Y-axis direction.
At this time, by making the value of the X axis of the midline constant, the position of the three-dimensional face image in the XY plane direction, that is, the direction in which the neck is tilted to the left and right, is determined. By making it constant, the position of the three-dimensional face image in the YZ plane direction, that is, the direction in which the head is swung vertically (depression direction) is determined.

Also, the deep nose point P2 and the infranasal point P3 of the three-dimensional face image are specified, and the straight line including the two points is taken as the first median, and the value of the X axis is made constant (matched with the YZ plane). Next, specify the intercostal point P1 and the infra-nasal point P3 of the three-dimensional face image, set the straight line including the two points as the second median, and make the Z-axis value constant (match the XY plane) By setting the first midline and the second midline in the Y axis direction.

In the third step S3, as necessary, the first adjustment and the second adjustment are repeatedly performed.

Thus, in the third step S3, the orientation of the three-dimensional face image acquired in the second step S2 is corrected, and the orientation of the three-dimensional face image is uniquely determined. That is, the orientation of the three-dimensional face image is set as the reference front.
The correction of the orientation of the three-dimensional face image in the third step S3 is performed by processing in the calculation unit based on a three-dimensional image orientation correction program stored in a storage unit of a computer described later. In addition, direct operation is performed by manual processing as necessary.

As described above, in the method of setting the reference front surface of the three-dimensional face image according to the present embodiment, by performing the first step S1, the second step S2, and the third step S3, the center line is centered and the front is directed. The three-dimensional face image can be set as the reference front.
Further, by setting the reference front of the three-dimensional face image, even if the height and position of the eyes and ears of the user A are different on the left and right or if the nose is bent, the face A1 based on these. Shape data can be accurately measured from the midline of the face A1.

The reference front of the three-dimensional face image set by the setting method of the reference front of the three-dimensional face image according to the present embodiment is preparation of glasses, goggles, gas mask, mask, wearable glass (in particular, retinal projection type), etc. It is suitably used for treatment (occlusion), cosmetic surgery, makeup, preparation of average face shape, comparison of faces, etc.

Next, an embodiment of a method of selecting glasses according to the present disclosure will be described.
FIG. 6 is a flowchart showing a method of selecting glasses according to the present embodiment.
As shown in FIG. 6, in addition to the first step S1, the second step S2, and the third step S3, the eyeglasses selection method according to the present embodiment includes a measurement step S10, a chart creation step SK, and It has 4 step S4 and 5th step S5, and performs these steps one by one.
That is, the method of selecting the glasses uses the method of setting the reference front of the three-dimensional face image.

According to the selection method of the glasses, the user A is the glasses on the premise that it is aligned with the center of the face A1, and it is possible to select the suitable glasses in the shape of the face A1 of one's own. It becomes.
In the glasses selection method, in addition to the above-described second step S2 and third step S3, measurement step S10, chart creation step SK, fourth step S4 and fifth step S5 are also executed by a computer described later. .

The measuring step S10 is at least one step selected from the group consisting of a first measuring step S11, a second measuring step S12, a third measuring step S13, a fourth measuring step S14, a fifth measuring step S15 and a sixth measuring step S16. It consists of
In the present embodiment, the case where all the steps are performed will be described.

The measurement step S10 is performed based on the reference front view, the reference left view, and the reference right view.
FIG. 7 is a reference front view, a reference left view and a reference right view acquired in the measurement step of the method of selecting glasses according to the present embodiment.
As shown in FIG. 7, in the measurement step, a two-dimensional image of the front relative to the reference front of the three-dimensional face image set by the setting method of the reference front of the three-dimensional face image described above is taken as a reference front view 21.
Further, a two-dimensional image of a left side surface (a state of being rotated 90 degrees clockwise from the standard front surface centering on the Y axis) with respect to the reference front of the three-dimensional face image is taken as a reference left view 22.
Similarly, a two-dimensional image of the right side relative to the reference front of the three-dimensional face image (a state rotated 90 degrees counterclockwise from the reference front around the Y axis) is taken as a reference right side view 23.
In both of the reference left view 22 and the reference right view 23, the three-dimensional face image of the reference front is not rotated about the X axis center and the Z axis.

In the first measurement step S11, using the reference front view 21, a (shortest) distance W2 in the X-axis direction from the YZ plane including the midline to the center of the pupil of the left eye and the YZ plane from the YZ plane including the midline to the right eye And the step of measuring the (shortest) distance W1 in the X-axis direction to the center of.
Thereby, the position in the X-axis direction of the centers of the left and right pupils can be recognized. That is, it is possible to recognize the distance between the centers of the left and right pupils in the X-axis direction and the difference in the distance from the center of the face A1 to the centers of the left and right pupils.
With such measurement values, for example, glasses having a bridge with a suitable length, lens width, etc. can be selected. In addition, in the fifth step S5 described later, when combining the three-dimensional face image and the three-dimensional glasses image of suitable glasses, the arrangement position of the three-dimensional glasses image in the left-right direction can be determined.

The second measurement step S12 uses the reference left view 22, the distance W4 in the Z-axis direction from the XY plane including the center of the pupil of the left eye to the base of the upper side of the left ear, and the reference right view 23 In this step, the distance W3 in the Z-axis direction from the XY plane including the center of the pupil to the base of the upper side of the right ear is measured.
Thereby, the position in the Z-axis direction of the upper base of the left and right ears can be recognized. That is, it is possible to recognize the distance from the center of the left and right pupils in the Z-axis direction to the base of the upper side of the left and right ears, and the difference between the left and right distances.
With this measurement value, it is possible to select, for example, a temple having a suitable length, glasses having a modern, and the like. In addition, when combining the three-dimensional face image and the three-dimensional glasses image of suitable glasses in a fifth step S5 described later, it is possible to determine the modern bending position of the three-dimensional glasses image.

In the third measurement step S13, using the reference front view 21, the distance W6 in the X-axis direction from the YZ plane including the midline to the base of the upper side of the left ear and the YZ plane including the midline to the upper side of the right ear It is a step which measures distance W5 of the direction of the X-axis to a root, respectively.
This makes it possible to recognize the position in the X-axis direction of the upper roots of the left and right ears. That is, the difference between the distance between the upper roots of the left and right ears in the X-axis direction and the difference in distance from the center of the face A1 to the upper roots of the left and right ears can be recognized.
With such measurement values, it is possible to select, for example, glasses having a front of a suitable length, glasses having a hinge of a suitable spread, glasses having a temple of a suitable spread, and the like. In addition, when combining the three-dimensional face image and the three-dimensional glasses image of suitable glasses in the fifth step S5 described later, the position of the temples of the three-dimensional glasses image can be adjusted to the interaural width.

The fourth measurement step S14 uses the reference left view 22, the distance W8 in the Y-axis direction from the XZ plane including the center of the pupil of the left eye to the base of the upper side of the left ear, and the reference right view 23 In this step, the distance W7 in the Y-axis direction from the XZ plane including the center of the pupil to the base of the upper side of the right ear is measured.
Thereby, the position in the Y-axis direction of the base of the upper side of the left and right ears can be recognized. That is, it is possible to recognize the distance from the center of the left and right pupils in the Y-axis direction to the base of the upper side of the left and right ears, and the difference between the left and right distances.
With this measurement value, for example, glasses having a temple with a suitable angle to the front can be selected. In addition, when combining the three-dimensional face image and the three-dimensional glasses image of suitable glasses in a fifth step S5 described later, the position of the temples of the three-dimensional glasses image can be adjusted to the in-ear angle.

The fifth measurement step S15 is a step of measuring the distance W9 in the Y-axis direction between the XZ plane including the center of the left eye pupil and the XZ plane including the center of the right eye pupil using the reference front view 21.
Thereby, the position in the Y-axis direction of the centers of the left and right pupils can be recognized. That is, the distance between the centers of the left and right pupils in the Y-axis direction can be recognized.
For example, the lens shape, the lens vertical width (height and width), and the like can be selected based on such measurement values. In addition, when combining the three-dimensional face image and the three-dimensional glasses image of suitable glasses in the fifth step S5 described later, the arrangement position of the three-dimensional glasses image in the vertical direction can be determined.

The sixth measurement step S16 measures the distance W10 in the Y-axis direction between the XZ plane including the upper base of the left ear of the reference left view 22 and the XZ plane including the upper base of the right ear of the reference right view 23. It is a step.
Thereby, the position in the Y-axis direction of the base of the upper side of the left and right ears can be recognized. That is, the distance between the upper roots of the left and right ears in the Y-axis direction can be recognized.
Such measurement value can adjust, for example, the angle of the temple. In addition, when combining the three-dimensional face image and the three-dimensional glasses image of suitable glasses in a fifth step S5 described later, the temple angle of the three-dimensional glasses image is adjusted according to the ear height on the left and right. be able to.

In the eyeglasses selection method, the measurement step described above is performed by processing in the calculation unit based on a measurement value calculation program stored in a storage unit of a computer described later. In addition, as needed, direct operation is performed by manual processing.

The chart creation step SK is a step of creating a chart based on the measurement value obtained in the measurement step S10.
FIG. 8 is a chart of a chart created based on the measurement values obtained by the method of selecting glasses according to the present embodiment.
As shown in FIG. 8, in the eyeglasses selection method according to the present embodiment, shape data of the face portion A1 of the user A is displayed as a chart 2 on the display unit of the computer.

In the chart 2, an average value (hereinafter also referred to as "average shape data") of shape data of the face portion of the same character as the user A stored in the storage unit of the computer is indicated. The shape data of the face part A1 is shown as a difference from the average shape data. The average shape data is a value obtained by averaging measurement values of shape data of a large number of face portions for each gender.
Further, in the chart 2, under the shape data of the face portion A1 of the user A, a face image corresponding to the measurement value as shown in FIG. 7 is posted so that the measured portion can be easily understood.
By these, the user A can recognize the shape data of his / her face A1, and can use the glasses for selection and the like.

The fourth step S4 (selection step) is a step of selecting a three-dimensional glasses image of glasses suitable for the user A from a library including a large number of three-dimensional glasses images of glasses based on measurement values.
The fourth step S4 is executed by performing selection processing by the operation unit based on a selection program from a library including a large number of three-dimensional eyeglass images of glasses stored in the storage unit of the server described later.

FIG. 9 is an explanatory diagram for explaining selection processing of the fourth step of the method of selecting glasses according to the present embodiment.
As shown in FIG. 9, in the fourth step S4, based on the measurement value of the first measurement step S11, from the library L including all possible three-dimensional glasses of glasses, the three-dimensional of the suitable glasses A first set L1 of glasses images is selected.
Then, based on the measurement value of the second measurement step S12, a second set L2 of suitable three-dimensional glasses of glasses is selected from the first set L1.
Then, based on the measurement value of the third measurement step S13, the third set L3 of suitable three-dimensional glasses of glasses is selected from the second set L2.
Then, based on the measurement value of the fourth measurement step S14, the fourth set L4 of suitable three-dimensional glasses images of glasses is selected from the third set L3.
Then, based on the measurement value of the fifth measurement step S15, the fifth set L5 of suitable three-dimensional glasses images of glasses is selected from the fourth set L4.

As described above, in the fourth step S4, what is included in the finally selected fifth set L5 is a set LB of three-dimensional glasses images of suitable glasses. That is, the three-dimensional glasses image of the suitable glasses included in the fifth set L5 is one selected based on the measurement value. If the third set L5 of the fifth set L5 does not include a three-dimensional glasses image of suitable glasses, it is possible not to make a selection based on the measurement values of any of the measurement steps.
Then, the set LB of three-dimensional glasses images of the finally selected suitable glasses is displayed on the display unit of the computer.

The fifth step S5 is a step of combining the three-dimensional face image and the three-dimensional eyeglass image of suitable glasses into a three-dimensional eyeglass-mounted face image.
The preparation of the three-dimensional glasses mounted face image in the fifth step S5 is performed by processing in the calculation unit based on a three-dimensional image synthesis program stored in a storage unit of a computer described later.

FIG. 10 is a diagram showing a first display screen displayed on the display unit in the fifth step of the method of selecting glasses according to the present embodiment.
As shown in FIG. 10, in the fifth step S5, the three-dimensional glasses image of one suitable eyeglass of the three-dimensional eyeglass image set LB of suitable eyeglasses is attached to the three-dimensional face image of the user A. The three-dimensional glasses mounted face image 31 is displayed on the display unit. The three-dimensional face image of the user A may not necessarily be the reference front.

In the first display screen 30a, a three-dimensional glasses mounted face image 31 is displayed, and a list 32 of other suitable glasses whose shapes are different from the three-dimensional glasses image of the mounted suitable glasses. Are displayed next to the three-dimensional glasses wearing face image 31 so as to be selectable.
In addition, a rim type list 33 as "style", a color variation list 34 of existing glasses as "color", and a lens shape list 35 and a color palette 34a as "shape" are displayed so as to be selectable.
The rim type list 33, the color variation list 34 of the existing glasses, the lens shape list 35, and the color palette 34a are not necessarily related to the shape data of the face portion A1.

In the first display screen 30a, the three-dimensional glasses mounted face image 31 can be rotated on the display unit by the operation of the operation unit of the computer.
In addition, it is preferable to select a preferred one based on the operation of the operation unit from the rim type list 33, the color variation list 34 of the existing glasses, and the lens shape list 35, and another suitable shape having a different shape. From the list 32 of the three-dimensional glasses images of the glasses, those suitable for the selection are further selected. That is, by selecting the rim type list 33, the color variation list 34 of the existing glasses, and the lens shape list 35, the number of three-dimensional glasses images of suitable glasses can be further narrowed.

Then, on the first display screen 30a, another suitable glasses having different selected shapes for the three-dimensional glasses image mounted on the face part A1 of the three-dimensional glasses mounted face image 31 based on the operation by the operation unit It has become possible to replace the three-dimensional glasses image of.
Further, after that, it is possible to change the color of the glasses by selecting a desired color from the color palette 34a.
In addition, it is also possible to display on the display unit so as to be able to select the horizontal width and vertical width of the lens, the material of the glasses, the price, and the like as other narrowing functions.

FIG. 11 is a view showing a second display screen displayed on the display unit in the fifth step of the method of selecting glasses according to the present embodiment.
As shown in FIG. 11, the second display screen 30 b is a front view of four patterns of the three-dimensional glasses-mounted face image 31 selected on the first display screen 30 a, and is a face of a suitable user A The way of seeing the part A1 is shown by changing the distance on the viewing side. That is, from the left side of FIG. 11, the three-dimensional glasses mounted face image 36 (front view) of the user A and the three-dimensional glasses mounted face image 37 of the user A viewed from a distance (5 m) seen from a person; The three-dimensional glasses wearing face image 38 of the user A seen from the distance (1 m) which speaks to a person and the three-dimensional glasses wearing face image 39 of the user A seen from the distance (20 cm) seen by a mirror are shown. The above-mentioned distance is an arbitrary value, and can be appropriately changed according to the user's request or the like.

This makes it possible to check the balance between the face and the size of the glasses due to the sense of perspective.
For example, since the glasses tend to look small when viewed from the front view, the balance can be confirmed by changing the viewing distance. In addition, the shape and color of the glasses may not be noticeable when viewed from a distance seen by a person, although they may feel flashy when viewed near.

By these, the user A can view the three-dimensional glasses mounted face image 31 in a state of wearing suitable glasses on the first display screen 30a of the display unit, and further, by the operation of the operation unit, By rotating the three-dimensional glasses wearing face image 31, the wearing state can be confirmed.
In addition, when there is another three-dimensional glasses image different in shape or color as a three-dimensional glasses image of suitable glasses, another three-dimensional glasses image of the three-dimensional glasses mounted face image 31 is divided by another operation of the operation unit. It is also possible to exchange the glasses image for confirmation.
In addition, when the user A selects his / her favorite glasses from among the glasses following the shape data of his / her face A1, the user A can also refer to the appearance displayed on the second display screen 30b.

Then, the user A can easily select his / her favorite glasses from among the glasses following the shape data of his / her face A1.
Also, the glasses image of the selected suitable glasses is displayed on the display unit of the computer. Such an image may be two-dimensional or three-dimensional.

Next, the above-described computer will be described.
FIG. 12 is a block diagram for explaining an outline of the configuration of a computer in the method of selecting glasses according to the present embodiment.
As shown in FIG. 12, in the method of selecting glasses according to the present embodiment, the computer 40 stores in a storage unit 41 and a storage unit 41 including a main storage unit composed of a ROM and a RAM and an auxiliary storage unit such as a hard disk. Operation unit 42 (CPU) that performs operation analysis based on the program, a display unit 43 such as a monitor or printer that displays the result processed by the operation unit, an operation unit 44 such as a keyboard or a mouse, and a network And the like, and comprises an input / output interface unit 45 etc.
The storage unit 41 of the computer 40 stores the above-mentioned 3D image preparation program, 3D image orientation correction program, measurement value calculation program, selection program, 3D image composition program, programs such as average shape data, etc. It is done. Further, the calculation unit 42 of the computer 40 includes an image preparation unit that executes the second step S2 described above, a setting unit that executes the third step S3, a measurement unit that executes the measurement step, and a chart that executes the chart creation step SK. A creation unit, a selection unit that executes the fourth step S4, and the like are included.

The computer 40 is connected to the scanner 10, the server (cloud) 50 and the external computer 51 via the input / output interface unit 45. That is, the computer 40, the server 50 and the external computer 51 form a communication network by the Internet. As a result, they can mutually transmit and receive data via the Internet.
The storage unit of the server 50 stores library data 52 of the library L including a large number of three-dimensional glasses images of glasses.

In the second step S2, the third step S3, the measurement step S10, the chart creation step SK, the fourth step S4 and the fifth step S5, as described above, the program etc. corresponding to each step stored in the storage unit 41 Processing is performed by the calculation unit 42 based on 46.

In the fourth step S4, the computer 40 receives the library data 52 of the server 50, and from the library L, based on the measurement value and the selection program stored in the storage unit 41, selection processing by the operation unit It is executed by doing.

After the fifth step S5, the information of the three-dimensional glasses image selected by the user A is transmitted from the computer 40 to the external computer 51 disposed in the warehouse or factory.
For example, if there is a stock, the person in charge must send out the corresponding glasses by looking at the three-dimensional glasses image received by the external computer 51 placed in the warehouse, the part number of the glasses corresponding to the three-dimensional glasses image, etc. become.
In addition, when there is no stock, the worker manufactures the glasses corresponding to the three-dimensional glasses image received by the external computer 51 arranged at the factory, the part number of the glasses corresponding to the three-dimensional glasses image, etc. It will be shipped after completion.
Such production may be carried out in the same manner as in the prior art, or may be produced by a three-dimensional printer or the like by inkjet, heat dissolution, photofabrication, powder sintering or the like. In addition, as materials, resins such as nylon, ABS, polycarbonate, etc., metals such as titanium, stainless steel, etc. can be adopted.

In addition, customize parts selection based on measurement values (for example, change in accordance with dimensions such as temple length and modern length, change to other design parts in sensitivity aspect, change of color, etc.) In the case where there is no eyeglass that you finally like, it is also possible to make a full order of eyeglasses that meets the user's preferences based on the measurement value.

Then, the angle of the temple of the selected glasses is adjusted on the basis of the measurement value obtained in the sixth measurement step S16 with respect to the actual glasses shipped.
Thereby, even if the heights of the upper roots of the left and right ears of the user A are different, for example, the angle of the temples of the glasses is adjusted before the product of the glasses selected by the user A is received. Can.

As described above, in the eyeglasses selection method according to the present embodiment, the user A can easily find the eyeglasses that fit him / her in a short time out of a large number of eyeglasses by performing the above-described steps. be able to.
In addition, it is also possible to easily select one's favorite glasses from among the glasses that fit to one's own.

Next, an embodiment of a method of creating a chart according to the present disclosure will be described.
FIG. 13 is a flowchart showing a method of creating a chart according to the present embodiment.
As shown in FIG. 13, the medical chart creation method according to the present embodiment includes a measurement step S10 and a chart creation step SK in addition to the first step S1, the second step S2, and the third step S3. And perform these steps sequentially.
That is, it is the same as the selection method of the spectacles mentioned above except not performing 4th step S4 and 5th step S5.

According to the chart creation method, the chart is created based on the measurement value in the measurement step S10 described above using the three-dimensional face image of the reference front described above, so that the shape of the user's face is described in the user We can provide medical records. As a result, the user can recognize the shape of his / her face, and can use it for the selection of glasses and the like.

As mentioned above, although the suitable embodiment of this indication was described, this indication is not limited to the above-mentioned embodiment.

In the first step S1 of the method of setting the reference front of a three-dimensional face image or the method of selecting glasses according to the present embodiment, the face portion A1 of the user A is scanned using the scanner 10 shown in FIG. The number of scanners is not limited to one, and may be plural.
Also, the method of scanning is not limited to the method shown in FIG.

For example, it is also possible to use an application of a portable terminal which scans a three-dimensional image of the face part A1. In this case, instead of the scanner 10, an SD card in which scan data captured by a portable terminal or a portable terminal is stored is connected to the computer.

In the eyeglasses selection method according to the present embodiment, as measurement step S10, first measurement step S11, second measurement step S12, third measurement step S13, fourth measurement step S14, fifth measurement step S15 and sixth measurement. Although all the steps S16 are performed, it is sufficient if at least one or more selected from these. For example, the first measurement step S11, the second measurement step S12, the third measurement step S13, the fourth measurement step S14, and the fifth measurement step S15 may be performed, and the sixth measurement step S16 may not be performed.
Further, the chart creation step SK and the fifth step S5 are not necessarily essential steps.

In the fourth step S4 of the method of selecting glasses according to the present embodiment, a three-dimensional glasses image of glasses suitable for the user A is selected from a library including a large number of three-dimensional glasses images of glasses based on measurement values. However, the glasses included in the library may be two-dimensional glasses images.
In this case, in the fourth step S4, a two-dimensional glasses image of glasses suitable for the user A is selected from a library including a large number of two-dimensional glasses images of glasses.
In addition, in the fifth step S5, since a three-dimensional glasses image is used, when a two-dimensional glasses image is used in the fourth step S4, it is necessary to convert or replace it with a three-dimensional glasses image. That is, it is necessary to use a three-dimensional glasses image separately from this.

In the fourth step S4 of the eyeglasses selection method according to the present embodiment, the set is limited stepwise from the library L based on the measurement value of each measurement step, but the limited one in each step You may multiply finally.
For example, FIG. 14 is an explanatory diagram for explaining selection processing of the fourth step of the method of selecting glasses according to another embodiment.
As shown in FIG. 14, in the fourth step S4, based on the measurement value of the first measurement step S11, from the library L including all possible three-dimensional glasses images of glasses, the three-dimensional suitable glasses A first set L11 of eyeglasses images is selected, and similarly, a second set L12 of suitable three-dimensional eyeglass images of glasses is selected from the library L based on the measurement values of the second measurement step S12, and From the library L, based on the measurement values of the third measurement step S13, a third set L13 of suitable 3D glasses images of glasses is selected, and similarly, from the library L, based on the measurement values of the fourth measurement step S14. And a fourth set L14 of three-dimensional glasses images of suitable glasses is selected, and similarly, based on the measurement value of the fifth measurement step S15, from the library L, of the three-dimensional glasses images of suitable glasses 5 sets L15 is selected, and finally, the first set L11, a second set L12, third set L13, or may be obtained by multiplying the fourth set L14 and the fifth set L5.
In this case, the multiplied part becomes a set LB of three-dimensional glasses images of suitable glasses. When the set LB does not include a three-dimensional glasses image of suitable glasses, it is possible not to multiply any of the sets.

Although the computer 40 is used in the method of selecting glasses according to the present embodiment, the program may be executed in the portable terminal using the portable terminal instead of the computer 40.
Further, instead of the computer 40, a storage unit or an operation unit in the server 50 may be used.

In the eyeglasses selection method according to the present embodiment, the computer 40 is connected to the server (cloud) 50 via the input / output interface unit 45, but the server 50 is not necessarily required.

FIG. 15 is a block diagram for explaining an outline of the configuration of a computer in a method of selecting glasses according to another embodiment.
As shown in FIG. 15, the computer 40 may not be connected to the server 50. In this case, the library data 52 of the library L is stored in the storage unit 41 of the computer 40 together with other programs 46 and the like.

In the eyeglasses selection method according to the present embodiment, as the sixth step after the fifth step S5, it is preferable to select the depth of the lens according to the face ratio, and to determine the face type (round face, square face, etc.) It is also possible to carry out sensitivity evaluation of the degree of matching using artificial intelligence (AI) that stores matching and non-matching evaluations based on lens shape selection, face type and face color information, etc. .

In each of the above-described embodiments, a configuration that includes the scanner 10 and the computer 40 and executes the first step S1 to the third step S3 is also referred to as a reference front setting device. The configuration that executes the measurement step S10 in addition to the configuration of the reference front setting device is also referred to as a measurement device. The configuration for executing the chart creation step SK in addition to the configuration of the measurement device is also referred to as a chart creation device. A configuration that executes the fourth step S4 (selection step) in addition to the configuration of the measurement device is also referred to as a glasses selection device.

The setting apparatus of the reference front of a three-dimensional face image of the present disclosure is used when measuring shape data of a face. For example, it is used for production of glasses, goggles, gas masks, masks, wearable glasses (especially, retinal projection type), etc., dental treatment (occlusion), cosmetic surgery, makeup, production of average face shape, comparison of faces, etc.
Moreover, the selection apparatus of spectacles of this indication is used when a user selects spectacles. According to the selection apparatus of such glasses, the user can easily select glasses to be worn comfortably.

Claims (11)

1. An image creation unit that creates a three-dimensional face image of the face based on scan data of the user's face;
   The surfaces of the centers of the left and right pupils of the three-dimensional face image are located on the same XY plane in mutually orthogonal X, Y, and Z axes, and at least two face surfaces in the three-dimensional face image A setting unit configured to set the orientation of the three-dimensional face image as a reference front in a case where a median line set to include a point coincides with the Y-axis direction;
   A measuring unit configured to measure the shape of the face portion of the user using at least one of a front surface and a side surface with respect to a reference front surface of the three-dimensional face image set by the setting unit;
   A measuring device comprising
2. The at least two points are selected from an intercostal point, a deep depth point and a low depth point
   The measuring device according to claim 1.
3. The setting unit locates a straight line including a deep nose point and a nasal point on the surface of the face portion of the three-dimensional face image on the same YZ plane, and an intercostal point on the surface of the face portion of the three-dimensional face image and The midline is made to coincide with the Y-axis direction by positioning a straight line including the infranasal point on the same XY plane.
   The measuring device according to claim 1 or 2.
4. The measurement unit measures the distance in the Y-axis direction between the center of the pupil of the left eye and the center of the pupil of the right eye, using the front with respect to the reference front of the three-dimensional face image.
   The measuring device according to any one of claims 1 to 3.
5. Custom-made eyeglasses that fit the user are performed based on the measurement values measured by the measurement unit.
   The measuring device according to any one of claims 1 to 4.
6. A measuring device according to any one of claims 1 to 5;
   A selection unit that selects the glasses or parts of the glasses that fit the user based on the measurement values measured by the measurement unit;
   An eyeglass selection apparatus comprising:
7. A measuring device according to any one of claims 1 to 5;
   A chart creation unit that creates a chart including shape data of the face of the user measured by the measurement unit;
   , Charting device with.
8. What is claimed is: 1. A measurement apparatus comprising a computer, comprising:
   A first step in which the computer acquires scan data of a user's face;
   A second step of producing a three-dimensional face image of the face according to the scan data acquired in the first step by the computer;
   The computer positions surfaces of centers of right and left pupils of the three-dimensional face image on the same XY plane in X, Y, and Z axes orthogonal to one another, and a face surface in the three-dimensional face image Setting a direction of a three-dimensional face image in a case where a median line set so as to include at least two points of is made coincident with the Y-axis direction as a reference front, and
   A measurement step in which the computer measures the shape of the face portion of the user using at least one of a front surface and a side surface with respect to a reference front surface of the three-dimensional face image set in the third step;
   How to measure, including
9. A method of selecting glasses in a glasses selection apparatus comprising a computer, the method comprising:
   A first step in which the computer acquires scan data of a user's face;
   A second step of producing a three-dimensional face image of the face according to the scan data acquired in the first step by the computer;
   The computer positions surfaces of centers of right and left pupils of the three-dimensional face image on the same XY plane in X, Y, and Z axes orthogonal to one another, and a face surface in the three-dimensional face image Setting a direction of a three-dimensional face image in a case where a median line set so as to include at least two points of is made coincident with the Y-axis direction as a reference front, and
   A measurement step in which the computer measures the shape of the face portion of the user using at least one of a front surface and a side surface with respect to a reference front surface of the three-dimensional face image set in the third step;
   A selection step of selecting the glasses or parts of the glasses to be fitted to the user based on the measurement values measured in the measurement step;
   How to select glasses, including
10. A method of creating a chart in a chart creating apparatus comprising a computer, the method comprising:
    A first step in which the computer acquires scan data of a user's face;
    A second step of producing a three-dimensional face image of the face according to the scan data acquired in the first step by the computer;
    The computer positions surfaces of centers of right and left pupils of the three-dimensional face image on the same XY plane in X, Y, and Z axes orthogonal to one another, and a face surface in the three-dimensional face image Setting a direction of a three-dimensional face image in a case where a median line set so as to include at least two points of is made coincident with the Y-axis direction as a reference front, and
    A measurement step in which the computer measures the shape of the face portion of the user using at least one of a front surface and a side surface with respect to a reference front surface of the three-dimensional face image set in the third step;
    A chart creation step of creating a chart including shape data of the face of the user measured in the measurement step;
    How to create a chart, including
11. An image creation unit that creates a three-dimensional face image of the face based on scan data of the user's face;
    The surfaces of the centers of the left and right pupils of the three-dimensional face image are located on the same XY plane in the X, Y, and Z axes orthogonal to one another, and the median line in the three-dimensional face image is in the Y axis direction A setting unit configured to set the orientation of the three-dimensional face image in the case of matching
    A reference front setting device comprising:
    

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