KR20180021507A - Face positioning method, face photographing method, Iris recognizing method using virtual image of plane mirror, and face photographing system - Google Patents

Abstract

The present invention can more easily and accurately confirm a face change of a user by photographing a face of the user in the same condition, pose, and position at each photographing process because the position of the face is accurately guided by using the virtual image principle of a mirror. Also, the present invention can recommend a product such as cosmetics according to the face change of the user because the face change of the user can be accurately confirmed. Also, the mirror is fitted into a mobile terminal and is used, thereby improving portability and usability for anyone. Also, the user can perform iris recognition while the user looks at himself or herself displayed on a screen of the mobile terminal by using the virtual image principle of the mirror formed on a screen of the mobile terminal when an iris is recognized by using the mobile terminal, thereby not only removing an aversion to the iris recognition but also more accurately recognizing the iris.

Description

Technical Field [0001] The present invention relates to a face positioning method, a face photographing method, an iris recognition method, and a facial photographing system using a virtual image principle of a mirror,

The present invention relates to a face positioning method, a face photographing method, an iris recognition method, and a face photographing system using a virtual image principle of a mirror. More particularly, A facial photographing method, an iris recognition method, and a facial photographing system using a virtual image principle of a mirror capable of always photographing a face at a certain position by guiding the face.

In recent years, research and application of biometrics or biometrics technology for identifying individuals using biometric information or behavioral characteristics of a person have been actively conducted. This recognition technology can be applied mainly to a security system by extracting unique features such as a face, an iris, a fingerprint, and a retina and extracting the characteristic features of the extracted features and comparing them with the established database to authenticate the user.

Meanwhile, the face recognition method is a method of photographing a user's face, storing the captured face image in a database, and then comparing the face image constructed in the database with the newly captured face image.

However, there is a problem that it is very difficult for the user to recognize the angle and pose of the face similar to or similar to the angle and pose of the face image previously registered at the time of authentication. That is, since the recognition rate of the face varies greatly depending on the illumination, the environment, the angle of the face, the pose, and the like, it is difficult to use and many errors occur.

Korean Patent No. 10-0577745

An object of the present invention is to provide a face positioning method, a face photographing method, an iris recognition method, and a facial photographing system using a virtual image principle of a mirror, which enables a user to more easily and easily recognize a change in a face.

A method of positioning a face using a virtual image principle of a mirror according to the present invention includes the steps of: preparing an object on which a photographing reference mark is displayed and in which a face is seen; Adjusting a distance between the object and the user's eyes to identify two virtual images of the photographing reference mark appearing on the object by the user; And matching the position of the two virtual images to specific positions of the face of the user, respectively.

A method for photographing a face using a virtual image principle of a mirror according to the present invention comprises the steps of matching a position of a predetermined part of the face of a user to a virtual image of a photographing reference mark appearing in the mirror by a photographing reference mark displayed on the mirror; A photographing step of photographing the face by a camera positioned behind the mirror; And a comparison step of comparing the face image taken by the user or the control unit in the photographing step with the face image of the user stored in advance in the database to determine the face change of the user.

The iris recognition method using the virtual image principle of a mirror according to the present invention activates an iris recognition camera installed in the mobile terminal when a user executes an iris recognition application installed in advance in a mobile terminal equipped with a mirror, Wherein the mobile terminal displays a photographing reference mark on a screen; A matching step of matching the position of the eye of the user to a virtual image of a photographing reference mark appearing in the screen when the user views the mirror; An imaging step of the iris recognition camera photographing the face of the user; And comparing the iris information extracted from the face image taken by the mobile terminal with the iris information previously stored in the database.

A facial photographing system using a virtual image principle of a mirror according to the present invention comprises a mirror for displaying a photographing reference mark on a surface thereof and representing the photographing reference mark as virtual images of two photographing reference marks; A camera for photographing a user's face fitted to a virtual image of the photographing reference mark; A database for storing face images taken by the camera; And a controller for comparing the face image stored in advance in the database with the face image captured by the camera.

Since the position of the face can be accurately guided using the virtual image principle of the mirror, the user's face can be photographed at the same condition, pose, and position at each photographing, so that the user's face change can be more easily and accurately confirmed .

In addition, since the present invention can accurately confirm the user's face change, it is possible to recommend a product such as cosmetics according to the user's face change.

In addition, since the mirror can be inserted into the mobile terminal, it is easy to carry and has an advantage that it can be easily used by anyone.

In addition, by using the virtual image principle of the mirror provided on the screen of the mobile terminal in the iris recognition using the mobile terminal, the user can perform the iris recognition while observing the self, which is displayed on the screen of the mobile terminal, It is possible to solve irrelevance to the iris, and more accurate iris recognition becomes possible.

1 is a view showing a face photographing system using a virtual image principle of a plane mirror according to a first embodiment of the present invention.
2 is a view showing a comparison between a photographing reference mark displayed on a plane mirror according to the first embodiment of the present invention and a virtual image of a photographing reference mark appearing on the plane mirror.
3 is a view schematically showing a virtual image of a plane mirror according to a first embodiment of the present invention.
4 is a plan view showing a state in which a front face of a face is parallel to a plane mirror according to the first embodiment of the present invention.
5 is a side view showing a state in which the front face of the face mirror is parallel to the plane mirror according to the first embodiment of the present invention.
6 is a flowchart showing a face photographing method using a virtual image principle of a plane mirror according to the first embodiment of the present invention.
7 is a view showing a face photographing system using a virtual image principle of a plane mirror according to a second embodiment of the present invention.
8 is a view showing the back side of the face photographing system shown in Fig.
9 is a diagram illustrating an iris recognition system using a virtual image principle of a plane mirror according to a third embodiment of the present invention.
FIG. 10 is a diagram illustrating an iris recognition method using a virtual image principle of a plane mirror according to a third embodiment of the present invention.
11 is a view showing an example of a photographing reference mark displayed on a plane mirror according to a third embodiment of the present invention.
12 is a flowchart showing an iris recognition method using a virtual image principle of a plane mirror according to a third embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a view showing a face photographing system using a virtual image principle of a plane mirror according to a first embodiment of the present invention. 2 is a view showing a comparison between a photographing reference mark displayed on a plane mirror according to the first embodiment of the present invention and a virtual image of a photographing reference mark appearing on the plane mirror.

Referring to FIGS. 1 and 2, a facial photographing system using a virtual image principle of a plane mirror according to a first embodiment of the present invention includes a mirror as an object whose face is viewed, a housing 12, a camera 14, A communication device 16, a database, and a control unit.

The mirror is a flat mirror 10 whose surface is flat and smooth glass. The rear surface of the planar mirror 10 is plated with a metal material such as silver, and a portion of the camera 14 facing the lens is not plated for photographing. In the present embodiment, the mirror is described as an example of the planar mirror 10, but it is of course possible to have a predetermined curvature, at least a part of which is curved, or a slightly concave or convex shape.

On the plane mirror 10, a photographing reference mark 20 to be described later is displayed in advance. The photographing fiducial mark 20 may be printed or displayed with a sticker or the like attached thereto. One of the photographing reference marks 20 may be displayed, and a plurality of photographing reference marks 20 may be displayed. The photographing reference mark 20 includes at least one of an eye reference mark for aligning the eyes of the user and a nose reference mark for aligning the nose of the user. Also, the present invention is not limited to this, and it is of course possible to display other parts other than the eyes and nose of the user. Referring to FIG. 11, the photographing reference mark 20 can be displayed in various shapes. The shape of the figure indicating the photographing reference mark 20 can be selected to be similar to the shapes and sizes of the parts of the user's face to be matched. It should be noted that the figure indicating the photographing reference mark 20 can be filled in with colors and only the edges are displayed.

The housing 12 includes a handle 12a that is formed to surround the plane mirror 10 and can be grasped by the user. The housing 12 is formed with a space in which the camera 14 and the short-range wireless communication device 16 can be embedded in the rear of the plane mirror 10. In addition, an illumination lamp may be provided inside the housing 12. The illumination lamp uses an LED illumination lamp.

The handle 12a is provided with a button 12b for operating at least one of the camera 14 and the illumination lamp. The operation of the camera 14 and the illumination lamp can be controlled differently according to the number of times the button 12b is depressed or depressed, for example. However, the present invention is not limited to this, and a button for operating the camera 14 and a button for operating the illumination lamp may be separately provided.

The camera 14 is provided at the rear of the plane mirror 10 in the housing 12. The camera 14 photographs the front face of the user looking at the plane mirror 10.

The short range wireless communication device 16 is provided in the housing 12 and transmits a face image photographed by the camera 14 to a predetermined mobile terminal. The mobile terminal can be used as any terminal capable of wireless communication such as a smart phone or a tablet PC of a user.

The database (not shown) is a storage unit for storing images photographed by the camera 14. The database may be provided in any one of the camera 14, the mobile terminal (not shown), an application installed in the mobile terminal, a server communicating with the application, or a server providing the application. Hereinafter, in the present embodiment, the database is provided in the mobile terminal (not shown), for example.

The application is an application for comparing and analyzing the face change by photographing the face of the user. The mobile terminal is a smart phone, and the smart phone can install the app through an application store, and the application is implemented in the mobile terminal. In addition, the app may analyze a face change of the user, compare the face change with a preset reference, and recommend the specific product necessary for the face of the user. For example, if the incidence of wrinkles in the eyes of the user is higher than a preset reference, it is possible to recommend cosmetics that can improve wrinkles in the eyes. The recommendation information may be provided through communication with the application or through a wired or wireless communication from a server providing the application.

The control unit (not shown) compares a face image stored in advance in the database with a face image captured by the camera 14. [ The control unit (not shown) may analyze the face change of the user by comparing the initial face image stored in advance in the database with the face image newly photographed by the camera 14. The face change of the user includes changes such as wrinkles, pores, stains, pigmentation, and the like.

The controller (not shown) may be provided in any one of the housing 12, the camera 14, and the mobile terminal. Hereinafter, in the present embodiment, the controller (not shown) is provided in the mobile terminal, for example. The control unit (not shown) may be included in the mobile terminal to implement the application, and may compare and analyze the face change of the user using the application.

The housing 12 may be provided with a distance sensor (not shown). The distance sensor (not shown) is a sensor for measuring the distance between the user and the plane mirror 10. When the distance measured by the distance sensor (not shown) falls within a predetermined distance range, the controller 13 may control the camera 13 to shoot the image.

3 is a view schematically showing a virtual image of a plane mirror according to a first embodiment of the present invention.

Generally, the principle of a virtual image in a plane mirror is as follows. Light reflects from the surface of the plane mirror and enters the human eye. At this time, when the reflected ray is extended into the plane mirror, a virtual image of the same size as the real one is formed at a point where the extension lines meet. The human eye sees the illusion in the plane mirror, and the light from the illusion in the plane mirror comes into the eye. This is called the virtual image principle of a plane mirror.

3A shows a state in which the photographing reference mark displayed on the flat mirror is covered with one eye.

Referring to FIG. 3A, when one eye is covered and one photographing reference mark 20 displayed on the surface of the plane mirror 10 is viewed, unobserved eyes are observed in the diagonal direction about the photographing reference mark 20 The virtual image 20 'of the photographing reference mark is seen.

Referring to FIG. 3B, there is shown a state in which one photographing fiducial mark 20 displayed on the surface of the plane mirror 10 is seen without selecting the eyes.

Referring to FIG. 3B, the light reflected by one photographing reference mark 20 is recognized by the brain through the user's eyes, but the brain thinks that the light is going straight, so that light reflected from one photographing reference mark 20 Extends into the plane mirror 10 and is perceived as a virtual image 20 'of two photographing reference marks. Therefore, only one of the photographing reference marks 20 is present on the surface of the plane mirror 10, but the user is seen as a virtual image 20 'of two photographing reference marks in the plane mirror 10. This is because the human's brain perceives in the brain light reflected at one shooting reference mark displayed on the surface of the plane mirror 10 and then focuses the viewpoint of the eye on his face reflected in the plane mirror 10 The human's brain thinks that the light is going straight, and the light is felt on the extension line of the viewpoint, so that it is mistaken for the photographing reference mark to be in the plane mirror 10.

3C shows a state in which two shooting reference marks are displayed on the plane mirror.

Referring to FIG. 3C, when two shooting reference marks A1 and A2 are displayed on the plane mirror 10, two virtual images B1 and B2 are seen from one eye of the user and two virtual images (B2, B3) are visible. Since the virtual image B2 seen at both eyes is the same, a total of three virtual images B1, B2, B3 are visible.

FIG. 3D shows a state in which the distances between the photographing reference marks shown in FIG. 3C are different.

That is, in FIG. 3D, the distances between the two photographing reference marks A1 and A2 are shown to be longer than the distances between the two photographing reference marks A1 and A2 in FIG. 3C. Therefore, a total of four virtual images B1, B2, B3 and B4 appear in the plane mirror 10.

Accordingly, by adjusting the distance between the photographing reference marks displayed on the plane mirror 10, the number of virtual images and the distances between virtual images B2 and B3 in the plane mirror 10 can be adjusted.

4 is a plan view showing a state in which a front face of a face is parallel to a plane mirror according to the first embodiment of the present invention. 5 is a side view showing a state in which the front face of the face mirror is parallel to the plane mirror according to the first embodiment of the present invention.

Fig. 4 shows that the nose of the user's face is adjusted to the virtual image of the photographing reference mark, and Fig. 5 shows the photographing of the user's face to the virtual image of the photographing reference mark.

4 and 5, when the user matches a predetermined portion of the face to the virtual image of the photographing reference mark appearing in the plane mirror 10, the camera 14 is disposed in parallel with the front face of the face, The front face can always be photographed by using the camera 14. [

6 is a flowchart showing a face photographing method using a virtual image principle of a plane mirror according to the first embodiment of the present invention.

Referring to FIGS. 2 and 6, a face photographing method using a virtual image principle of a plane mirror according to a first embodiment of the present invention is as follows.

First, the user who wishes to take a picture stares the plane mirror 10 and adjusts the distance between the plane mirror 10 and the eye of the user, Identify the virtual images 20 '. The user can adjust the position of a predetermined part of his / her face to the virtual images 20 'of the photographing reference mark appearing in the plane mirror 10 by the photographing reference mark 20 displayed on the plane mirror 10 The matching step is performed. (S1)

Referring to FIG. 2A, one reference mark 20 is displayed on the surface of the plane mirror 10, for example. Further, in the present embodiment, the photographing reference mark 20 is an eye reference mark for matching the user's eyes, for example. However, the present invention is not limited to this and, as shown in FIG. 2C, it is of course possible to display a plurality of photographing reference marks 20 on the surface of the plane mirror 10. Of course, it is also possible to match at least one or more other parts of the user's face, such as nose, ears and the like.

FIG. 2B shows a view through the plane mirror 10 to the user.

Referring to FIG. 2B, the user can recognize the virtual image 20 'of the two photographing reference marks while looking at his / her face reflected in the plane mirror 10. At this time, the user must recognize the virtual image 20 'of the photographing reference mark by a predetermined distance from the plane mirror 10.

The user can align the position of his or her two eyes with the virtual image 20 'of the two photographing reference marks. Generally, since the interval between two eyes of a person is almost unchanged due to years or other reasons, if the two eyes are positioned on the virtual image 20 'of the two photographing reference marks, the photographing is always performed at a certain pose or position . If the user's two eyes are matched to the virtual image 20 'of the photographing reference mark, the camera 14 is arranged in parallel with the front face of the face. Therefore, You can shoot.

After the user's two eyes are matched to the virtual image 20 'of the photographing reference mark, a photographing step is performed in which the camera 14 photographs the front face of the user's face behind the plane mirror 10 . (S2)

 The user can operate the camera 14 by activating the button 12b at the time of photographing, and the difference between the virtual image 20 'of the photographing reference mark and the position of the user's eye is set in a predetermined range It is also possible that the photographing is performed automatically. Also, if the user operates the button 12b or if the difference between the virtual image 20 'of the photographing reference mark and the position of the user's eye is within a predetermined range, It is of course possible to be performed. Also, when the distance sensor (not shown) measures the distance between the user and the plane mirror 10 and the distance between the user and the plane mirror 10 is within a predetermined set distance range, (Not shown) can control the camera 14 to perform shooting. The control unit (not shown) also controls the operation of the illumination lamp.

Accordingly, when the illumination lamp and the distance sensor (not shown) are used, the face at the same position can be photographed under the same illumination condition and the same distance condition.

After the photographing step, the short-range wireless communication device 16 transmits the photographed face image to the user's mobile terminal set in advance. (S3)

After the photographing step, the user or the control unit compares the face image photographed in the photographing step with the initial face image of the user stored in advance in the database (S4)

The user's initial face image is an image captured and stored by the user in the same manner as the user at the time of initial use.

The controller compares and analyzes the face image photographed in the photographing step and the initial face image through an image analysis program embedded in the app.

Accordingly, the face change of the user can be confirmed. For example, you can compare before and after use of expensive cosmetics, or check for changes in wrinkles, pores, stains, acne, pigmentation, skin aging, and sebaceous status of the face over time.

Also, the controller may display the facial image photographed in the photographing step and the initial facial image of the user stored in advance in the database through the mobile terminal, so that the user can visually confirm the facial image.

It is also possible that the control unit displays the user's face change with data such as a numerical value or a graph through the image analysis program.

In addition, the controller may compare a face change of the user determined in the comparing step with a preset reference, and recommend a specific product, which can improve the user's face change, to the user through the application.

For example, if the rate of occurrence of wrinkles in the eyes of the user is higher than a preset reference, a cosmetic that can improve the wrinkles of the eyes is recommended, or if the change in pigmentation of the user's face is higher than a preset reference, It is possible to recommend. The recommendation may be displayed to the user at the mobile terminal through the application. Therefore, it can be used for product advertising services such as cosmetics.

The controller may compare the face change of the user with a predetermined reference to determine an abnormal phenomenon according to a face change to recommend a hospital treatment or an improvement method.

In addition, the controller compares and analyzes the face change of the user before and after use of the cosmetic, so that the user can check the efficacy of the cosmetic.

The face photographing method as described above can more accurately photograph the face of the user at the same condition, pose, and position all the time, so that the face change of the user can be more easily and accurately confirmed.

7 is a view showing a face photographing system using a virtual image principle of a plane mirror according to a second embodiment of the present invention. 8 is a view showing the back side of the face photographing system shown in Fig.

7 and 8, a facial photographing system according to a second embodiment of the present invention includes a face mirror 50, which is detachably coupled to the mobile terminal 60, And the illumination lamp are the same as those of the first embodiment, and the rest of the configuration and operation are similar, so a description of the similar configuration will be omitted and different configurations will be described in detail.

A clip 54, which is detachably coupled to the mobile terminal 60, is formed at the rear of the plane mirror 50. The clip 54 is mounted behind the housing 52 surrounding the plane mirror 50.

The plane mirror 50 is fitted in front of the camera 62 and the illumination lamp 64 provided in the mobile terminal 60.

In the plane mirror 50, for example, three shooting reference marks 20 are displayed in advance. In the plane mirror 50, a portion of the camera 62 opposed to the lens is not plated so as not to interfere with the shooting of the camera 62.

The face photographing system according to the second embodiment of the present invention configured as described above is photographed using the same principle as in the first embodiment except that the camera 62 provided in the mobile terminal 60 of the user, (64) can be used.

Since the plane mirror 50 can be fitted to the mobile terminal 60, the plane mirror 50 is advantageous in that it is simple to carry and easy to use. In addition, the present invention can be applied to any terminal equipped with an app or a program for comparing and analyzing a face change of a user's face.

9 is a diagram illustrating an iris recognition system using a virtual image principle of a plane mirror according to a third embodiment of the present invention. FIG. 10 is a diagram illustrating an iris recognition method using a virtual image principle of a plane mirror according to a third embodiment of the present invention.

9, the iris recognition system according to the third embodiment of the present invention includes a mobile terminal 100 and a plane mirror 110 attached to a screen of the mobile terminal 100, The face of the user is photographed using the virtual image principle of the plane mirror 110 and the iris of the user is different from that of the first embodiment and the remaining configurations and operations are similar to each other, A detailed description thereof will be omitted, and different configurations will be described in detail.

The mobile terminal 100 may be a smart phone of a user, but the present invention is not limited thereto.

The mobile terminal 100 includes an iris recognition camera (Iris camera) 101 and an illumination lamp 102 disposed on the same plane as the screen. An infrared lamp (Iris lamp) is used for the iris recognition of the human being.

In this embodiment, the object on which the photographing reference mark is displayed and the face of the user is illuminated corresponds to the mobile terminal. The plane mirror 110 is provided on the screen of the mobile terminal 100 so that the face of the user is illuminated.

The plane mirror 110 may be integrally formed with the mobile terminal 100 or may be attached to the screen of the mobile terminal 110. In other words, the plane mirror 110 may be a protective film that gives a mirror effect to be attached to the screen to protect the screen of the mobile terminal 100, and the mirror glass 110 mounted on the screen of the mobile terminal 100 It is also possible. In the present embodiment, the plane mirror 110 is described as an example, but any mirror can be used as long as the user's face is mirrored. It is also possible of course that a shape having a predetermined curvature or at least a part of curvature is also possible.

An application or a program is installed in advance in the mobile terminal 100. In the present embodiment, the iris recognition app is installed in the mobile terminal 100, for example. The iris recognition app displays the photographing reference mark set in advance at the time of photographing on the screen of the mobile terminal 100, photographs the user's face, extracts the iris information of the user from the photographed image, And it is an application that confirms whether or not the user is matched.

The control unit (not shown) of the mobile terminal 100 controls the operation of the iris recognition camera 101 and the illumination lamp 102, and compares and analyzes iris information, which will be described later, do.

The mobile terminal 100 is provided with a database (not shown) for storing images taken by the iris recognition camera 101. However, the present invention is not limited to this, and the database may be provided in at least one of a server communicating with an app installed in the mobile terminal 100 or a server providing the app.

12 is a flowchart showing an iris recognition method using a virtual image principle of a plane mirror according to a third embodiment of the present invention.

Referring to FIG. 12, a face photographing method using a virtual image principle of a plane mirror according to a third embodiment of the present invention is as follows.

First, when a user presses a predetermined button among a plurality of buttons 103 (104) provided in the mobile terminal 100 in a locked screen state of his or her mobile terminal 100, Is performed. (S11)

The plurality of buttons 103 and 104 may include a home button 103 or an end button 104 and at least one of the plurality of buttons 103 and 104 may execute the iris recognition app As shown in Fig.

In the preparation step, when the iris recognition application is executed, the controller of the mobile terminal 100 activates the infrared lamp and the iris recognition camera installed in the mobile terminal 100, and displays a photographing reference mark 120 on the screen Display.

Meanwhile, in the present embodiment, the iris recognition app is executed when a predetermined button among the plurality of buttons 103 and 104 is pressed and the photographing reference mark 120 is displayed on the screen, It is also possible that a password input screen or a secret pattern input screen is displayed together with the photographing reference mark 120 on the screen when a button set in the plurality of buttons 103 and 104 is pressed. For example, the photographing reference mark 120 may be displayed on the upper portion of the screen of the mobile terminal 100, and a password input screen or a secret pattern input screen may be displayed below the screen. It is also possible that the photographing reference mark 120 and the fingerprint input screen are displayed together on the screen.

Referring to FIG. 10B, the photographing reference mark 120 is displayed on the screen of the mobile terminal 100. Referring to FIG. 11, the photographing reference mark 120 may have various shapes and colors. Also, the photographing reference mark 120 may be displayed in numbers or letters. In the present embodiment, it is of course possible to display a plurality of photographed reference marks without limitation, for example, by being represented by one photographed reference mark 120. Also, in the present embodiment, the one photographing fiducial mark 120 is an eye fiducial mark for aligning the user's eyes, for example.

Referring to FIG. 10C, when the photographing reference mark 120 is displayed, the user can adjust the distance between himself and the screen of the mobile terminal 100 while viewing his or her face displayed on the screen of the mobile terminal 100 Thereby recognizing the virtual image 120 'of the two photographing reference marks appearing in the plane mirror 110.

The user performs a matching step of matching the positions of the two eyes of the user with the virtual images 120 'of the two shooting reference marks (S12). It is possible to always take a picture in a certain pose or position. Further, if the user's two eyes are matched to the virtual image 120 'of the photographing reference mark, the iris recognition camera 101 is arranged in parallel with the front face of the face, so that the front face can always be photographed.

At this time, since the user takes a picture of himself / herself as viewed on the plane mirror 110 as it is, the sense of rejection of the monochrome image appearing at the time of photographing for the conventional iris recognition can be solved.

 After matching the two eyes of the user to the virtual image 120 'of the photographing reference mark as described above, the iris recognition camera 101 performs photographing of photographing the face of the user (S13)

At this time, the iris recognition camera 101 can capture the entire face of the user, and it is also possible to photograph only the eyes or the pupil of the face of the user.

In addition, in the photographing step, when the difference between the virtual image 120 'of the photographing reference mark and the position of the user's eye is within a predetermined range, photographing can be performed automatically. However, the present invention is not limited to this, and it is also possible to photograph a user by operating a button of the mobile terminal 100. When the mobile terminal 100 detects the virtual image 120 ' It is of course possible to control the photographing to be automatically performed after a predetermined set time if the difference is within a preset range. It is also possible to control the photographing to be automatically performed when the distance between the screen of the mobile terminal 100 and the user is within a preset distance range. The distance between the screen of the mobile terminal 100 and the user is detected by a distance sensor (not shown).

When the photographing is completed, the control unit of the mobile terminal 100 extracts the iris region from the face image photographed in the photographing step, analyzes the iris information, and compares the iris information with the iris information previously stored in the database (S14) The iris information is converted into digital information and encrypted.

The comparison between the iris information obtained through the photographing in the comparison step and the iris information stored in the database is performed through the application.

If it is determined that the iris information obtained through the photographing matches the iris information stored in the database in the comparison step, the controller of the mobile terminal 100 releases the lock of the mobile terminal 100 (S15)

10D, if it is determined that the iris information obtained through the photographing and the iris information previously stored in the database do not match in the comparison step, the controller of the mobile terminal 100 determines whether the iris information You can display the lock screen again or display the password or secret pattern input screen.

When the user does not want to take the face, the user may click the screen of the mobile terminal 100 or push the screen to the left or right using a finger to input a lock screen, a password input screen, a secret pattern input Screen can be displayed.

In the iris recognition method according to the third embodiment of the present invention as described above, since the user takes a picture of himself or herself shining on the plane mirror 110 as it is, The sense of rejection can be resolved. In addition, by matching the position of the user's eye with the virtual image 120 'of the photographing reference mark appearing in the plane mirror 110, the photographing can be performed at a constant attitude and position every time of photographing, Can be minimized.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10,110: plane mirror 14: camera
16: Near field wireless communication device 20,120: Marking standard
20 ', 120': a virtual image 100 of a photographing reference mark 100:
101: iris recognition camera 102: infrared lamp

Claims (23)

Preparing an object on which a photographing reference mark is displayed and in which a face is seen to be illuminated;
Adjusting a distance between the object and the user's eyes to identify two virtual images of the photographing reference mark appearing on the object by the user; And
And matching the positions of the two virtual images to specific positions of the user's face, respectively. A matching step of matching a position of a predetermined portion among the faces of the user to a virtual image of a photographing reference mark appearing in the mirror by a photographing reference mark displayed on a mirror;
A photographing step of photographing the face by a camera positioned behind the mirror;
And a comparison step of comparing the face image photographed by the user or the control unit in the photographing step with a face image of a user stored in advance in the database to determine a change in the face of the user. The method of claim 2,
The mirror is a flat mirror,
Wherein the photographing reference mark is a virtual image of a mirror displayed in advance on the plane mirror. The method of claim 2,
Wherein the shooting reference mark is one, the shooting reference mark has two virtual images,
Wherein the user uses the virtual image principle of the mirror to match the user's eyes to the virtual images of the two photographing reference marks in the matching step. The method of claim 2,
Wherein the photographing reference mark includes at least one of an eye reference mark for aligning the eyes of the user and a nose reference mark for aligning the nose of the user. The method of claim 2,
Wherein the photographing step is performed when the user operates a button provided in the vicinity of the mirror. The method of claim 2,
In the photographing step,
Wherein the photographing is performed automatically when the difference between the virtual image of the photographing reference mark and the position of the user's eye is within a preset range. The method of claim 2,
And a communication step of, after the photographing step, transmitting the photographed face image to the mobile terminal through a near field wireless communication device provided in at least one of the mirror and the camera. The method of claim 8,
Wherein the database includes at least one of a camera, a mobile terminal, and a server communicating with an application installed in the mobile terminal. The method of claim 8,
The method of claim 1, wherein the control unit comprises at least one of a camera, an application installed in the mobile terminal, a mobile terminal, and a server communicating with the application. The method of claim 8,
Wherein the control unit compares the face change of the user determined in the comparing step with a preset reference,
And recommending a product that can improve the face change of the user through the application installed in the mobile terminal to the user. The infrared lamp and the iris recognition camera installed in the mobile terminal are activated when the user executes the iris recognition application installed in advance in the mobile terminal equipped with the mirror and the mobile terminal displays the photographing reference mark on the screen ;
A matching step of matching the position of the eye of the user to a virtual image of a photographing reference mark appearing in the screen when the user views the mirror;
An imaging step of the iris recognition camera photographing the face of the user;
And comparing the iris information extracted from the face image photographed by the mobile terminal with the iris information previously stored in the database. The method of claim 12,
In the preparation step,
Wherein the user operates the iris recognition app by pressing a predetermined button among a plurality of buttons provided on the mobile terminal in a lock screen state of the mobile terminal. 14. The method of claim 13,
If it is determined that the iris information obtained through the photographing and the stored iris information match,
Wherein the controller of the mobile terminal uses the virtual image principle of the mirror to unlock the mobile terminal. The method of claim 12,
The mirror is a flat mirror,
Wherein the shooting reference mark is one, the shooting reference mark has two virtual images,
Wherein the user uses the virtual image principle of the mirror to match the eyes of the user to the virtual images of the two photographing reference marks in the matching step. The method of claim 12,
In the photographing step,
Wherein the image is automatically photographed when the difference between the distance from the mirror and the user is within a preset range. The method of claim 12,
In the photographing step,
Wherein the photographing is performed automatically when the difference between the virtual image of the photographing reference mark and the position of the user's eye is within a preset range. The method of claim 12,
Wherein the database includes at least one of a mobile terminal and a server communicating with an app installed in the mobile terminal. A mirror on which a photographing reference mark is displayed on a surface and the photographing reference mark is represented by virtual images of two photographing reference marks;
A camera for photographing a user's face fitted to a virtual image of the photographing reference mark;
A database for storing face images taken by the camera;
And a controller for comparing the facial image stored in advance in the database with the facial image captured by the camera. The method of claim 19,
The camera is a camera built in a mobile terminal,
Wherein the mirror comprises a planar mirror disposed in front of the camera. The method of claim 20,
And a clip coupled to the rear of the mirror and adapted to fit into the mobile terminal. The method of claim 19,
And a short range wireless communication device for transmitting a face image taken by the camera to a predetermined mobile terminal. The method of claim 19,
The mirror is attached to a screen of the mobile terminal,
Wherein the camera is an iris recognition camera built in the mobile terminal,
A facial photographing system using a virtual image principle of a mirror further including an infrared lamp built in the mobile terminal.

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