JP2004046451A - Eye image pickup device and individual authentication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely image the eye image of the right eye or left eye of a person to be authenticated by the person's natural motion of looking at a mark by both eyes. <P>SOLUTION: An apparatus comprises the mark 19 visually confirmed by both eyes L1 and 1R of the person 1 to be authenticated, a first camera 17 imaging the right eye 1R of the person 1 while the person 1 watches the mark 19 by both eyes, and a second camera 13 for imaging the left eye 1L of the person 1 while the person 1 looks at the mark 19 by both eyes. According to this structure, the person 1 need not perform the unnatural positioning of facing the camera, for example, with only the left eye while closing the right eye. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an individual authentication device that performs individual identification using a pattern such as an iris or a retina, and an eye image capturing device used in the individual authentication device, and in particular, can accurately capture each pattern of the left eye and the right eye. The present invention relates to a possible eye image capturing device and an individual authentication device.
[0002]
[Prior art]
In recent years, biometrics technology has been actively developed, and iris authentication devices that perform individual identification using iris, which is information of the human eye, have begun to spread. As an iris image pickup device used in this iris authentication device, there is, for example, an automatic tracking type described in the document “Electronics”, February 1998, page 48.
[0003]
FIG. 23 is a schematic configuration diagram of an iris authentication device including an automatic tracking type iris imaging device. The iris authentication device includes an iris imaging device 200, an iris processing unit 206 that compares an iris pattern of the subject to be imaged captured by the iris imaging device 200 with registered iris pattern data and performs iris recognition processing, and an iris processing unit 206. And a database 211 storing registered iris pattern data to be used.
[0004]
The iris imaging device 200 includes a lighting 201 for illuminating the face and eyes of the person to be authenticated with near-infrared light, a wide-angle camera 202 for imaging the person to be authenticated, and a narrow-angle camera for imaging an enlarged image of the eyes of the person to be authenticated. 203, a mechanical control unit 204 for performing position control and focus control of the narrow-angle camera 203, and controlling the illumination 201, the wide-angle camera 202, the narrow-angle camera 203, and the mechanical control unit 204 to control the iris of the person to be authenticated. An image processing unit 205 that acquires an image and outputs the image to the iris processing unit 206.
[0005]
The wide-angle camera (wide camera) 202 is a camera capable of capturing a wide field of view, captures an image of the upper body of the person to be authenticated, and sends the image to the image processing unit 205. The image processing unit 205 first calculates the position of the head from the image of the upper body by pattern matching or the like, and then calculates the position of the eyes. Then, the image processing unit 205 outputs a control signal to the mechanical control unit 204, positions the narrow-angle camera (narrow camera) 203 at the position of the indexed eye, causes the zoomed-up iris image to be captured, captures the iris image, and captures the iris. Output to the processing unit 206.
[0006]
The iris processing unit 206 cuts out the iris portion from the iris image, encodes the feature portion, compares this with the registration data registered in the database 211, and determines whether or not the person to be authenticated is a registered person. Is determined.
[0007]
This automatic tracking type iris image pickup device takes a procedure of calculating an iris position from a captured image of a wide-angle camera and then performing alignment of a narrow-angle camera, which is a telephoto camera, so that the processing load of the image processing unit 205 is large. There is a problem that it becomes. In addition, since the cooperative operation between the wide-angle camera 202 and the narrow-angle camera 203 is required, it takes a long time to acquire an iris image used for iris authentication, and there is a problem that the time for which the person to be authenticated waits becomes longer.
[0008]
In order to solve such a problem, an iris imaging device in which a narrow-angle camera is fixed without using a wide-angle camera has been commercialized. The fixed type iris imaging device is configured such that a person to be authenticated aligns his / her own pupil with a shooting position of a fixed camera and captures an iris image. That is, the person to be authenticated moves his or her eyes back and forth while keeping the right or left eye to be photographed so as not to deviate from the optical axis of the fixed camera. The iris imaging apparatus checks whether the iris image captured by the solid-state imaging device satisfies the conditions necessary for the iris authentication process, and captures the image of the eye of the subject when the conditions are satisfied. The data is output to a subsequent iris processing unit.
[0009]
[Problems to be solved by the invention]
However, the fixed iris imaging apparatus has a problem that it is difficult for a person who is unfamiliar with iris imaging to align one eye with the optical axis of the fixed camera. The fixed type iris image pickup device displays a mark for eye alignment, and guides the mark to be viewed with one of the right eye and the left eye. Therefore, the position of the subject's eyebrows is located on the optical axis of the fixed camera, and the iris cannot be captured by the telephoto camera (narrow-angle camera). is there. In addition, when the position is adjusted with one eye, there is a problem that it is difficult to align the camera with the pupil, and the pupil cannot be imaged stably near the center of the angle of view.
[0010]
SUMMARY OF THE INVENTION An object of the present invention is to provide a fixed eye image capturing apparatus capable of reliably capturing an eye image image while a person to be authenticated looks at a mark with both eyes, and an individual authentication apparatus using the eye image capturing apparatus. Is to provide.
[0011]
[Means for Solving the Problems]
An eye image capturing apparatus that achieves the above object is a first image capturing a mark to be visually recognized by both eyes of the person to be authenticated, and a right eye of the person to be authenticated while the person to be authenticated looks at the mark with both eyes. A camera and a second camera for imaging the left eye of the subject while the subject is looking at the mark with both eyes. With this configuration, the subject does not need to pinch one eye to align his / her own eye, and each camera captures both right-eye and left-eye images in a natural state where the mark is viewed with both eyes.
[0012]
Preferably, the above-mentioned eye image capturing apparatus is provided with a first illumination for illuminating the right eye of the person to be authenticated and a second illumination for illuminating the left eye of the person to be authenticated. With this configuration, the eyes are illuminated by the illumination for the right eye when capturing the right eye, and the illumination for the left eye is performed when capturing the left eye, so that a clear image of the eye is captured.
[0013]
More preferably, in the above-described eye image capturing apparatus, the mark is provided at an intersection of an optical axis of the first camera and an optical axis of the second camera. With this configuration, when the subject sees the mark with both eyes, the right eye or the left eye easily matches the optical axis of each camera.
[0014]
Similarly, in the above eye image pickup apparatus, the mark is provided at a position surrounding each angle of view of the first camera and the second camera. With this configuration, the mark does not appear in the image captured by each camera, and a good eye image can be captured.
[0015]
Similarly, in the eye image pickup device, the mark is provided at a position shifted from an intersection point between the optical axis of the first camera and the optical axis of the second camera. According to this configuration, the mark does not appear in the image captured by each camera.
[0016]
More preferably, in the above-described eye image capturing apparatus, a first guidance illumination disposed adjacent to the first camera, and a second guidance illumination disposed adjacent to the second camera. Wherein the position of the person to be authenticated is guided in a manner in which the first and second guided lights overlap. With this configuration, the person to be authenticated can be guided to the optimum position in a short time.
[0017]
More preferably, in the above-described eye image capturing apparatus, the color of the first guidance illumination is different from the color of the second guidance illumination. According to this configuration, the person to be authenticated can easily determine whether or not his or her own position is good based on the change in the color of the two guided illuminations.
[0018]
More preferably, in the above-mentioned eye image capturing apparatus, the pupil position coordinates in the right eye image of the subject to be imaged by the first camera and the left eye image of the subject to be imaged by the second camera. And position determination means for determining the in-focus state of each captured image of the first camera and the second camera based on the pupil position coordinates. With this configuration, it is possible to quickly determine whether or not the eye image captured by the camera is an image suitable for individual authentication, particularly, iris authentication.
[0019]
More preferably, the above-mentioned eye image pickup device is characterized in that a means for guiding a position to the person to be authenticated is provided when the position determining means determines that focusing is impossible. With this configuration, the person to be authenticated can be guided to the optimum position, and an image that is good for individual authentication can be taken.
[0020]
Similarly, in the eye image capturing apparatus, the in-focus determination of the captured image is performed by comparing a high frequency component amount included in an image signal of the captured image of the first camera and the image signal of the captured image of the second camera with a threshold value. And an image determination unit for performing the determination. With this configuration, it is also possible to easily determine whether or not an image suitable for individual authentication has been captured.
[0021]
An individual authentication device that achieves the above object is any one of the eye image capturing devices described above, and generates a right-eye authentication code from a captured image of the right eye of the subject captured from the eye image capturing device, and Code data generating means for generating a left-eye authentication code from the captured image of the left eye, a database storing the authentication code for the right eye and the authentication code for the left eye of the registrant, and the authentication code for the right eye of the authenticated person, Matching means for comparing and collating the right-eye authentication code stored in the database with the left-eye authentication code stored in the database. And With this configuration, individual authentication can be performed with both eyes captured at one time, and authentication accuracy can be improved. Also, even when individual authentication with one eye fails, individual authentication with the other eye can be performed immediately, and the waiting time of the person to be authenticated is reduced.
[0022]
Preferably, in the above-described individual authentication apparatus, the right-eye authentication code and the left-eye authentication code generated by the iris data generation unit in the registration mode for registering the right-eye authentication code or the left-eye authentication code of the person to be authenticated in the database. And a registration means for registering a pair of an identifier for the right eye, an identifier for the left eye and an identifier of the registrant in the database. With this configuration, the registration processing and the authentication processing can be shared by one iris authentication device.
[0023]
More preferably, in the above-mentioned individual authentication apparatus, the code data generation means, the authentication means, and the registration means are provided separately for the right eye and the left eye. When the right eye and the left eye are shared, the apparatus configuration is simplified and the apparatus cost is reduced.However, by being provided separately, the processing for the right eye and the processing for the left eye can be performed in parallel, Processing time is reduced.
[0024]
More preferably, in the above-described individual authentication device, the collation unit compares and compares the right-eye authentication code of the person to be authenticated with the right-eye authentication code stored in the database, and the person to be authenticated is not a registrant. When it is determined that the identification code for the left eye of the person to be authenticated is compared with the authentication code for the left eye stored in the database, authentication determination means for performing identity verification is provided. With this configuration, the personal authentication with the left eye is performed only when the personal authentication with the right eye fails, so that the processing device with a small processing capability can execute the authentication processing in a short time.
[0025]
More preferably, in the individual authentication device, the authentication determination unit determines the right-eye authentication code based on the similarity corresponding to each right-eye authentication code obtained as a result of comparison and collation with the right-eye authentication code. It is characterized in that the order of comparison and comparison with the corresponding authentication code for the left eye is determined. With this configuration, the comparison and collation are performed in descending order of the similarity, so that the time required for the authentication process is reduced, and the waiting time of the person to be authenticated is reduced.
[0026]
Similarly, in the individual authentication device, the collation unit compares the left-eye authentication code of the subject with the left-eye authentication code stored in the database and determines that the subject is not a registrant. At this time, there is provided an authentication determining means for comparing and collating the right-eye authentication code of the person to be authenticated with the right-eye authentication code stored in the database to perform identity verification. According to this configuration as well, the personal authentication with the right eye is performed only when the personal authentication with the left eye fails, so that the processing device with a small processing capacity can execute the authentication processing in a short time.
[0027]
Similarly, in the individual authentication device, the authentication determination unit corresponds to the left-eye authentication code based on the similarity of each left-eye authentication code corresponding to a result of comparison and comparison with the left-eye authentication code. The order in which the comparison with the right-eye authentication code is performed is determined. Also according to this configuration, the comparison and collation are performed in descending order of similarity, so that the time required for the authentication process is reduced, and the waiting time of the person to be authenticated is reduced.
[0028]
More preferably, in the above-mentioned individual authentication device, the authenticity of the living body of the person to be authenticated is determined from at least one of a change in an image captured by the first camera and a change in an image captured by the second camera. It is characterized by having a living body judgment means. With this configuration, erroneous authentication due to an artificial eye or the like can be prevented.
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0030]
(First Embodiment)
FIG. 1 is a configuration diagram of the iris authentication device according to the first embodiment of the present invention. The iris authentication device includes an iris imaging device 10 that captures an iris image of a person to be authenticated, and an authentication processing unit 30 that performs authentication processing on the iris image captured by the iris imaging device 10.
[0031]
The iris imaging device 10 includes a fixed camera 12 that is a telephoto camera that photographs the right eye 1R of the person 1 to be authenticated, a fixed camera 13 that is a telephoto camera that photographs the left eye 1L of the person to be authenticated, Illumination 14 for illuminating the right eye 1R of the subject 1 with near-infrared light, illumination 15 for illuminating the left eye 1L of the subject 1 with near-infrared light, image determining means 16 for determining the image quality of a captured image of the camera 12, and camera An image determining means 17 for determining the image quality of the 13 captured images.
[0032]
In the housing of the iris imaging device 10, the cameras 12 and 13 are installed obliquely so that their optical axes 12a and 13a face the right eye 1R and the left eye 1L of the person 1 to be authenticated. The illuminations 14 and 15 are also installed such that the illumination directions of the respective illumination lights are directed to the right eye 1R and the left eye 1L, so that images of the right eye 1R and the left eye 1L of the subject 1 can be captured at one time. I have to.
[0033]
The right-eye camera 12 and the illumination 14 are arranged on the left side of the apparatus from the subject 1 toward the iris imaging apparatus 10, and the left-eye imaging camera 13 and the illumination 15 are arranged on the right side of the apparatus. The optical axes 12a and 13a are generally set so as to intersect at the transparent panel 18 on the front surface of the housing of the iris imaging device 10. In addition, the focal positions of the cameras 12 and 13 are approximately adjusted to the distance that the right eye and the left eye of the person to be authenticated are within the angle of view of the cameras 12 and 13. In the transparent panel 18, a marker 19 is provided at a position where the optical axes 12 a and 13 a of both cameras 12 and 13 intersect to indicate a mark as a viewpoint target of the person 1 to be authenticated.
[0034]
That is, when the person to be authenticated 1 is located at an appropriate position and the person to be authenticated 1 sees the mark 19 with both eyes, the right eye is positioned on the optical axis 12a of the camera 12 and is positioned on the optical axis 13a of the camera 13. The left eye is located. When the camera 12 captures an image of the right eye 1R, near-infrared light from the illumination 14 is evenly applied to the pupil of the right eye 1R. The illumination 14 is installed at a position where the light is reflected by the camera and does not enter the camera 12. The same applies to imaging of the left eye.
[0035]
FIGS. 2A and 2B are explanatory diagrams of the arrangement of the visible light cut filter in the iris imaging device 10. An iris image suitable for the iris authentication process is obtained by imaging with near-infrared light. Since near-infrared light is hardly included in natural light, the illuminations 14 and 15 that emit near-infrared light are mounted on the iris imaging device 10 so that near-infrared light is prevented from entering the cameras 12 and 13. It is necessary to provide a visible light cut filter for transmitting visible light and cutting visible light.
[0036]
FIG. 2A is a diagram showing an example in which the front panel 18 where the optical axes of the cameras 12 and 13 intersect is made of a visible light cut filter material. FIG. 2B is a diagram illustrating an example in which dedicated visible light cut filters 8R and 8L are provided on the front of the cameras 12 and 13 respectively. In the case of FIG. 2B, as the front panel 18 at the position where the optical axes of the cameras 12 and 13 intersect, a panel made of, for example, a transparent glass or a transparent resin plate that transmits light in all wavelength ranges is used. use.
[0037]
FIGS. 3A and 3B are explanatory diagrams of the marker 19. As shown in FIG. 3A, when the iris image pickup device 10 is viewed from the front, illuminations 14 and 15 are disposed on both left and right end portions, respectively. Be placed. A dotted circular area 7 shown between the cameras 12 and 13 is an area where the shooting area (angle of view) of each camera 12 and 13 intersects with the front panel. Therefore, since the images entering the circular area 7 are captured by the cameras 12 and 13, a ring-shaped marker 19 is provided so as to surround the outside of the circular area 7 in the example of FIG. The marker 19 is not limited to a circular shape, but may be a hollow frame such as a rectangle or an ellipse. In this way, by preventing the marker 19 from entering the circular area (imaging area) 7, it is possible to prevent the images of the marker 19 from being reflected on the cameras 12 and 13.
[0038]
However, in order to ensure that the marker 19 is not reflected on the cameras 12 and 13, it is preferable to attach the marker 19 with a material that transmits near-infrared light. Further, as shown in FIG. 3B, by providing the marker 19 at a position shifted downward (or upward) from the imaging region 7, the marker material can be freely determined freely. The shape of 19 does not need to be limited to a hollow frame.
[0039]
Referring back to FIG. 1, the authentication processing unit 30 converts the iris from the eye image of the right eye 1R of the subject 1 (the eye image determined and output by the image determination unit 16 of the iris imaging device 10 as having good image quality) captured by the camera 12. An iris data generation unit 32 that extracts a pattern and generates a right-eye authentication code; and an eye image of the left eye 1L of the subject 1 photographed by the camera 13 (the image determination unit 17 of the iris imaging device 10 determines that the image quality is good). Iris data generation means 33 for extracting an iris pattern from the output eye image) and generating a left-eye authentication code.
[0040]
The authentication processing unit 30 includes a database 34 having a right-eye authentication code storage unit 34R and a left-eye authentication code storage unit 34L, and stores a right-eye authentication code or a left-eye authentication code generated from an eye image of a person to be authenticated in the database. A registration unit 35 for storing the right-eye authentication code generated by the iris data generation unit 32 in the registration mode in the right-eye authentication code storage unit 34R of the database 34 in the registration mode, and a left-eye authentication code generated by the iris data generation unit 33 in the registration mode. A registration unit 36 for storing the authentication code in the left-eye authentication code storage unit 34L of the database 34, and comparing the authentication code generated by the iris data generation unit 32 in the authentication mode with data stored in the right-eye authentication code storage unit 34R of the database 34. Matching means 37 for matching, and iris data generating means 33 generated in the authentication mode A matching unit 38 for comparing and comparing the authentication code with the stored data in the left-eye authentication code storage unit 34L of the database 34; an authentication determining unit 39 for receiving the matching result of the matching units 37 and 38 to make a final determination of iris authentication; A user registration unit for performing input management of information;
[0041]
An operation when an iris image is captured by the iris authentication device described above will be described. The iris authentication device starts photographing when the subject to be authenticated comes to the front position of the device using an ultrasonic sensor or infrared reflected light, and emits near-infrared light from the illuminations 14 and 15 to the subject 1. Irradiate the eyes. The subject moves his / her face closer to the iris imaging device 10 while keeping the marker 19 clearly visible at the center with both eyes open.
[0042]
In the state shown in FIG. 4A, the pupil 2 is slightly open and faces forward, but as the face approaches the iris imaging device 10, the state shown in FIG. As shown in (1), the right eye 1R and the left eye 1L shift toward one another, and at the same time, the pupil 2 contracts by trying to see a nearby object. This pupil contraction is called the vergence reflex and is a normal human biological response. That is, the exposed area of the iris 3 is widened by pupil contraction, and a state suitable for the iris authentication processing is naturally created.
[0043]
In the process in which the person to be authenticated 1 approaches the iris imaging device 10, the image determining means 16 of the iris imaging device 10 determines whether or not the image quality of the image captured by the camera 12 is suitable for iris authentication. The image determining means 17 determines whether or not the image quality of the image captured by the camera 13 is suitable for iris authentication. Whether the image quality is suitable for iris authentication is determined by whether the camera is focused on the pupil.In general, the more focused the image, the more high frequency components in the image signal. Used.
[0044]
In this manner, the right-eye image 5 and the left-eye image 6 are simultaneously captured by the cameras 12 and 13 as shown in FIG. At this time, the left and right pupils are closer to the side closer to the nose, but since the left and right pupils and the cameras 13 and 12 face each other, the left and right irises are taken from the front by the cameras 12 and 13. Become. The illumination is also emitted from near the front of the eyeball.
[0045]
Next, a method of processing an eye image captured by the iris imaging device 10 will be described. The eye images captured by the cameras 12 and 13 are input to the iris data generation units 32 and 33 via the image determination units 16 and 17 and an iris authentication code is generated.
[0046]
The generation of the iris authentication code in the iris data generation means 32 and 33 is generated by a procedure described in, for example, Japanese Patent Publication No. 8-504979. This will be described with reference to FIG.
[0047]
When the eye image is captured (step S301), a boundary between the pupil and the iris in the eye image is detected (step S302). This is detected using the round shape of the pupil. That is, the luminance of the pixels on the circumference is accumulated while changing the radius and the center position of the circle, and the circle giving the radius and the center coordinates at which the change of the accumulated value is the maximum is defined as the boundary between the pupil and the iris. .
[0048]
Next, the outer edge of the iris is determined based on the position of the pupil (step S303). That is, the outer edge of the iris is determined by using the luminance difference between the iris portion and the white eye (sclera) portion. First, the center position of the iris is determined based on the center position of the pupil, and pixel values on the assumed circumference are accumulated. Next, while increasing the radius of the circle, the accumulated value is calculated each time. Then, the position where the amount of change in the accumulated value is maximum is detected as the outer edge of the iris. At this time, if a part of the iris is covered with the upper or lower eyelid, the boundary of the eyelid is also detected.
[0049]
After the boundary between the pupil and the iris and the outer edge of the iris are determined, the donut-shaped iris is cut into, for example, eight rings, and the coordinate system of each ring is set (step S304), and each ring is converted into a band shape. For this purpose, it is converted into polar coordinates (θ, r) represented by the rotation direction (θ) and the radial direction (r), and an analysis band is determined (step S305).
[0050]
Thereafter, Gabor filter processing is performed on the polar coordinate data to perform image data analysis (step S306), and the feature amount of the iris pattern is extracted. Then, the feature amount is converted into a binary code to obtain an authentication code (step S307).
[0051]
The authentication code thus generated is registered as registration data in the database 34 of FIG. 1 when the iris authentication device is in the registration mode. In the case of the authentication mode, the authentication code (Code) obtained in step S307 is compared and collated with the registered authentication code in the database 34, and the collation degree (similarity) is calculated by the Hamming distance (step S308). Then, based on the Hamming distance, it is determined whether or not the person to be authenticated is a person, that is, a registrant (step S309).
[0052]
When the iris authentication device is in the registration mode, an identifier indicating the right eye when the image is captured by the camera 12 and the identifier indicating the left eye when the image is captured by the camera 13 are added to the authentication code of the iris generated in step S307 in FIG. Further, since a user identifier indicating a registrant is given from the user registration means 40, these are stored in the database 34 as a set. At this time, as shown in FIG. 1, it is preferable that the identification code of the iris of the right eye and the authentication code of the iris of the left eye are distinguished and stored in the database 34 using the identifier LR.
[0053]
In this way, by storing the authentication code of the iris of the right eye and the authentication code of the iris of the left eye in the database 34 separately, when the iris authentication device is used in the authentication mode, the collation unit 37 determines the authentication code of the camera 12. It is sufficient to compare the authentication code generated from the captured image with the data stored in the right-eye authentication code storage unit 34R of the database 34, and the matching unit 38 similarly performs the comparison with the storage data of the left-eye authentication code storage unit 34L. I'm done. As a result of the comparison, when the similarity is higher than the predetermined threshold, it is determined that the person to be authenticated is a registrant.
[0054]
As described above, according to the iris authentication device according to the present embodiment, the subject can perform a natural operation of staring at the center marker 19 with both eyes, and capture good iris images of the right and left eyes. Therefore, it is not necessary for the person to be authenticated to perform the alignment by looking at the marker with only one eye, and the time required for the alignment can be reduced.
[0055]
(Second embodiment)
FIG. 6 is a configuration diagram of the iris authentication device according to the second embodiment of the present invention. The difference from the first embodiment described above is that the authentication processing unit 50 according to the present embodiment receives the collation results of the collation units 37 and 38 and determines the degree of similarity to the authentication determination unit 39 as described in detail later. And a similarity storage unit 41 for referring to the similarity in the final determination of the iris authentication. Other configurations are the same as those of the first embodiment.
[0056]
FIG. 7 is a flowchart showing an operation procedure of the iris authentication device according to the second embodiment. First, the right and left eyes are photographed (step S701), and respective authentication codes are generated as described with reference to FIG. 22 (step S702). Then, first, the right-eye authentication code is sequentially compared with all the stored data in the right-eye authentication code storage unit 34R by the matching unit 37 (step S703), and the similarity between the authentication code and each stored data (registered authentication code). Is output to the similarity storage means 41.
[0057]
The similarity storage unit 41 pairs each similarity output from the matching unit 37 with the user registration number Uid of the registered authentication code to be compared and arranges them in the order of similarity. The authentication determining unit 39 determines the similarity, and determines whether there is a registered authentication code having the highest similarity and a similarity greater than or equal to a predetermined value (step S704).
[0058]
If the result of this determination is affirmative (Yes), the person to be authenticated is authenticated as the person (registrant). However, before that, the registration code of the left eye having the same user registration number as the authentication code matching the iris data of the right eye is read from the left-eye authentication code storage unit 34L, and the registered authentication code and the authentication of the left eye of the subject are performed. The code is collated (step S705), and as a result of the collation, it is determined whether or not the two match (step S706).
[0059]
If both match, that is, if the respective authentication codes of the right eye and the left eye match the respective registered authentication codes, it is determined that the person to be authenticated is the person (registrant) (step S707). As a result, highly accurate personal authentication can be performed. However, in the present embodiment, even if the result of the determination of the left eye (step S706) does not match, if the right eye matches, the person is determined to be the person (step S707). This is because in the case of iris authentication, even if only one eye matches, highly accurate personal authentication is possible.
[0060]
If the similarity of the registered authentication code indicating the highest similarity does not reach the predetermined value and it cannot be determined that the user is the principal as a result of the comparison determination between the authentication code of the right eye of the subject and the registered authentication code (step S704), Then, the authentication code for the left eye of the subject is compared with the registered authentication code for the left eye.
[0061]
However, in this case, the registered authentication codes for the left eye are not read out sequentially from the left-eye authentication code storage unit 34L, but are read out in descending order of the probability of being identified as the person. That is, in order of the similarity obtained as a result of the comparison and collation in the right eye, the registration authentication codes for the left eye to which the user registration number (Uid) paired with the registration authentication code for the right eye are sequentially assigned. The data is read out and compared (step S708). Then, it is determined whether or not there is a registered authentication code of the left eye whose similarity is equal to or greater than a predetermined value (step S709), and if so, it is determined that the user is the person (step S707).
[0062]
Even for the left eye, if there is no registered authentication code whose similarity is equal to or larger than the predetermined value (the determination result in step S709 is negative), it is determined whether or not to retry next (step S710). When the selection is made, the process returns to the both-eye photographing process (step S701). If the retry is not performed, it is determined that the user is not the user (step S711), and the process proceeds to the next authenticated person.
[0063]
As described above, in the present embodiment, when the authentication determination by the right eye becomes impossible, the authentication determination by the left eye is performed in the descending order of the similarity with the right eye. When the person to be authenticated is the registrant, it is often determined that the person is not the person himself / herself because the degree of similarity slightly exceeds the threshold value depending on the state at the time of imaging, and the registration authentication code of a completely different person. Similarity is higher than that. For this reason, if comparison and collation are performed with the authentication code of the other eye in the order of similarity, useless collation operation can be omitted, and the time for authentication determination can be shortened. In addition, you may test | inspect in order of a left eye and a right eye.
[0064]
(Third embodiment)
FIG. 8 is a configuration diagram of the iris authentication device according to the third embodiment of the present invention. In the first and second embodiments, as shown in FIGS. 1 and 6, the right-eye image determination unit 16, the iris data generation unit 32, the registration unit 35, the collation unit 37, and the left-eye image determination unit 17, the iris data generating means 33, the registering means 36, and the collating means 38 are separately provided. In the present embodiment, the component for the right eye and the component for the left eye are used.
[0065]
That is, the iris imaging device 20 of the iris authentication device according to the present embodiment includes illuminations 14 and 15, cameras 12 and 13, a marker 19, and a front panel 18 similar to those of the first embodiment. , A switch 21 for selecting one of the cameras 12 and 13, an image determination unit 16 for capturing an image captured by the camera 12 or 13 selected by the switch 21 and determining the image quality, and outputting a switching signal to the switch 21. And a camera selection unit 22.
[0066]
The authentication processing unit 51 according to the present embodiment includes an iris data generation unit 32 connected to the image determination unit 16, a registration unit 35 that captures an authentication code output from the iris data generation unit 32, and a collation unit 37. And an authentication determining unit 39 for performing a final authentication determination in response to a matching result of the matching unit 37; a database 34 connected to the matching unit 37 and the registration unit 35, which is the same as the first embodiment; A user registration unit 40 to be connected is provided, and the collation unit 37 and the registration unit 35 switch between right-eye processing and left-eye processing in response to a switching signal from the camera selection unit 22.
[0067]
FIG. 9 is a time chart of an authentication process in the iris authentication device according to the third embodiment. In the iris authentication device according to the present embodiment, the camera selection unit 22 controls the switch 21 to switch the output image of the camera 12 and the output image of the camera 13 sequentially, and inputs the output image to the image determination unit 16. The image determination means 16 determines whether or not the eye image satisfies the quality condition. If the eye image satisfies the quality condition, the image determination unit 16 converts the captured image of the camera 12 or 13 selected by the switch 21 into an iris. Output to the data generating means 32.
[0068]
The iris data generation means 32 generates an authentication code in the same manner as described in the first embodiment, outputs the authentication code to the registration means 35 in the registration mode, and outputs the authentication code to the registration means 35 in the authentication mode. Hand over to 37. Whether the authentication code is for the right eye or for the left eye is determined based on a switching signal from the camera selection unit 22. Note that, as in the second embodiment, a similarity storage unit 41 may be provided between the matching unit 37 and the authentication determination unit 39.
[0069]
According to the present embodiment, since the right-eye and left-eye components are used for switching, the device can be simplified and the cost can be reduced.
[0070]
(Fourth embodiment)
FIG. 10 is a configuration diagram of an iris authentication device according to the fourth embodiment of the present invention. The iris authentication unit 30 of the iris authentication device is the same as the authentication processing unit 30 according to the first embodiment. The iris imaging device 52 according to the present embodiment includes a position determination unit 43 instead of the image determination units 16 and 17 of the iris imaging device 10 according to the first embodiment. Position guidance means 44 is provided for guiding the position where the person to be authenticated 1 stands in response to the instruction.
[0071]
FIG. 11 is a configuration diagram of the position determination unit 43 shown in FIG. The position determination unit 43 includes a pupil position detection unit 45 that captures the right eye image 5 captured by the camera 12, a pupil position detection unit 46 that captures the left eye image 6 captured by the camera 13, and pupil position detection units 45 and 46. The distance calculation means 47 calculates the distance D between the left and right pupils by taking in the detection result of the pupil, and the determination means 48 which determines the quality of the image quality from the distance D between the pupils calculated by the distance calculation means 47.
[0072]
FIGS. 12A, 12B, and 12C are explanatory diagrams of the operation of the position determination unit 43. FIG. When the distance between the face of the person 1 to be authenticated and the cameras 12 and 13 of the iris imaging device 52 is long (FIG. 12A), just good (FIG. 12B), and close (FIG. 12). FIG. 4 is a diagram schematically showing a right-eye image 5 and a left-eye image 6 taken by the cameras 12 and 13 when (c) changes.
[0073]
As shown in FIG. 12A, when the face of the person to be authenticated 1 is far from the cameras 12 and 13, the eyes of the person to be authenticated are imaged small and within the angle of view. Conversely, as shown in FIG. 12C, when the face of the person 1 to be authenticated is close to the cameras 12 and 13, the eyes of the person to be authenticated are imaged large and protrude outside the angle of view. Be photographed. On the other hand, as shown in FIG. 12B, when the position of the person to be authenticated 1 is just right and the distance between the face of the person to be authenticated 1 and the cameras 12 and 13 is appropriate, the focus of the camera is The subject is photographed such that the eye of the subject 1 is within the depth of field and the pupil is near the center of the angle of view. That is, the camera optical system is designed so that the camera focuses on the eye of the subject 1 and the pupil is near the center of the angle of view when the position of the subject 1 is appropriate.
[0074]
The state shown in FIG. 12B can be determined from the distance D between the left and right pupils when the images 5 and 6 of the cameras 12 and 13 are arranged side by side.
[0075]
Therefore, for the right-eye image 5 and the left-eye image 6 continuously photographed from the start of photographing, the pupil position detecting means 45 and 46 respectively determine the pupil image position from the position of the pupil having the lowest luminance. As a method of detecting this position, an appropriate threshold value is provided, the images 5 and 6 are binarized, and a dark portion (region below the threshold value) and a region having a circular pattern are found. ) Is obtained. The pupil center coordinates of the right-eye image 5 thus obtained are (Xa, Ya), and the pupil center coordinates of the left-eye image 6 are (Xb, Yb).
[0076]
The distance calculating means 47 estimates a value D corresponding to the distance between the pupils of both eyes from the magnitudes of Xa and Xb. For example, if the size of the angle of view in the X direction is Xmax, it can be calculated as D = (Xmax−Xa) + Xb. In this case, the distance d near the center of the face that is not photographed by the cameras 12 and 13 (see FIG. 12B) is not included, but this distance d is a default value depending on the installation position of the cameras 12 and 13. Therefore, the above value D is a value corresponding to the distance between both pupils.
[0077]
The determining unit 48 determines whether the distance between the iris imaging device 52 and the face of the person 1 to be authenticated is appropriate based on the magnitude of the distance value D. If the distance is appropriate, the image is captured at that time. The left and right eye images 5 and 6 are captured and used as an authentication code generation image. If the distance value D is not within the appropriate range, the position instructing unit 44 is instructed to correct the position of the person to be authenticated 1 through the position guiding unit 44 according to the position of the pupil obtained by the position determining unit 43.
[0078]
For example, when the distance value D is small (away), the user is encouraged to approach the person to be authenticated, and when the distance D is large (approached), the user is encouraged to leave. If the pupil is not included in the image captured by the camera 12 or 13 on one side, the movement to the left or right is prompted. If the position of the camera 12 or 13 in the upward or downward direction (Y direction) is inappropriate, the user is prompted to move upward or downward. As the method of guidance, voice guidance, arrow display, and character display are used.
[0079]
In this way, an eye image with good image quality is obtained, and the subsequent authentication processing and registration processing are performed in the same manner as in the first embodiment. As described above, according to the present embodiment, the subject can be guided to an appropriate in-focus position based on the positional relationship of the pupils in the images captured by the two cameras 12 and 13, and an iris image with high authentication accuracy can be obtained. It can be acquired in a short time.
[0080]
(Fifth embodiment)
FIG. 13 is a configuration diagram of an iris authentication device according to the fifth embodiment of the present invention. This iris authentication device is basically the same as that of the first embodiment, except that the cameras 12 and 13 of the iris imaging device 53 are provided with guidance lights 61 and 62. The guidance illuminations 61 and 62 are used to appropriately guide the person 1 to stand against the iris imaging device 53, and the operation of performing iris authentication from the captured eye image is performed in the first embodiment. Same as the form. Hereinafter, the guidance lights 61 and 62 will be described.
[0081]
In FIG. 13, the guidance illuminations 61 and 62 are arranged such that the optical axes thereof coincide with the optical axis 12 a of the camera 12 and the optical axis 13 a of the camera 13, respectively. For example, as shown in FIGS. 14A and 14B, a plurality of light emitting elements are arranged in a ring shape around the taking lens of the camera 12 so that the center coincides with the optical axis 12a. It is assumed that the guide lighting 61 is used. The same applies to the guidance lighting 62 attached to the camera 13.
[0082]
The example shown in FIG. 14 is an example in which the guidance lighting 61 is arranged at the front part of the camera (to be authenticated), but the guidance lighting may be arranged at the back side of the camera. For example, as shown in FIG. 15A and FIG. 15B, the guidance illumination 61 ′ having a diameter slightly larger than the housing of the camera 12 is arranged on the back side of the camera 12. Thus, when the camera 12 is viewed from the front (the side of the person to be authenticated), ring-shaped illumination whose center coincides with the optical axis 12a of the camera 12 appears to leak. The same applies to the guidance lighting attached to the camera 13.
[0083]
Note that, instead of providing the guide lights 61 and 62 outside the cameras 12 and 13, guide lights are provided inside the cameras, and the guide lights can be viewed by a person to be authenticated through an entrance window (aperture) in the taking lens. You may comprise so that it can be performed.
FIG. 16A is a layout diagram of the guide illuminations 61 and 62 when the iris imaging device 53 shown in FIG. 13 is viewed from the front. FIGS. 16 (b), 16 (c), and 16 (d) show states of the guided lights 61 and 62 when the person to be authenticated views them. Since the images seen by the left and right eyes are processed by the visual recognition unit of the brain, the left and right pupils of the subject 1 are correctly oriented to the cameras 12 and 13 respectively, and the subject 1 is marked by the marker 19 ( In a state (FIG. 16C) in which the eyes are focused on the iris image pickup device 53 while facing the iris image pickup device 53 (see FIG. 16C), the guidance lights 61 and 62 visible behind the panel 18 are Visually, they appear to overlap.
[0084]
However, the guidance lights 61 and 62 are displaced in a state in which the user looks at the marker 19 in which the line of sight is shifted laterally (FIG. 16B) or a state in which the line of sight is not facing the camera (FIG. 16D). Visible in state. The subject 1 can be positioned by moving a position where the left and right guidance lights 61 and 62 stand in a position where they appear to overlap (the state shown in FIG. 16C).
[0085]
It should be noted that by using the illumination lights of different colors for the guide illuminations 61 and 62, the visual color in a correctly oriented state changes, and it becomes easy to determine the position of the person to be authenticated. The same effect can be obtained even when the guidance lights 61 and 62 cannot be arranged so as to coincide with the optical axes 12a and 13a of the cameras 12 and 13 and can be arranged only near the cameras.
[0086]
(Sixth embodiment)
FIG. 17 is a configuration diagram of the iris authentication device according to the sixth embodiment of the present invention. The iris authentication device according to the present embodiment detects whether or not the eye is a real eye by the iris authentication device according to the first embodiment. It is characterized in that a means for detecting when a picture is taken is added.
[0087]
That is, the iris authentication device according to the present embodiment captures the images captured by the cameras 12 and 13 and obtains pupil iris movement (pupil contraction and iris direction). There are provided iris state storage means 65 and 66 for storing a history of state quantities indicating movement, and a living body determination means 67 for determining whether or not the eye is a real eye from the movement history of the pupil iris.
[0088]
In the iris authentication device according to the present embodiment, when the person to be authenticated 1 comes close to the face while looking at the marker 19 of the iris imaging device 10, as described in the first embodiment, the pupil contraction and the crossed eyes are reduced. Occurs as a biological reflex. Therefore, from a series of images of the right eye and a series of images of the left eye continuously captured by the cameras 12 and 13, respectively, the iris state detection means 63 and 64 quantify and obtain the amount of contraction of the pupil and the state of the crossed eyes. As a method of detecting the pupil contraction state, a conventionally used method, for example, a pupil radius Rp and an iris radius Ri are obtained, and the ratio (Rp / Ri) can be used.
[0089]
As another method, it is also possible to make a determination using a luminance threshold value, utilizing the fact that the magnitude relation of the luminance at the pupil is “pupil <iris <sclera”. For example, first, a threshold value Lp is set to identify a pupil, and if the width of a pixel whose luminance is equal to or less than the threshold value Lp is Dp, Dp generally indicates a pupil diameter. Further, assuming that an image data range which is higher than the luminance level of the iris and lower than the threshold value Li lower than the scleral luminance level is equal to or smaller than Di with respect to a cross section passing through the center position of the pupil portion, Di generally has an iris diameter of Show. Thus, the degree of pupil contraction can be determined from the value of Dp / Di.
[0090]
As a method of detecting the direction of the pupil, as shown in FIG. 18, a region (threshold Ls) where the luminance is higher than that of the skin in a section passing through the center of the pupil around the iris is obtained, and the width on the nose side is Dn. Assuming that the width on the opposite side (ear side) is De, the value of De / Dn can indicate the direction in which the pupil is facing (closer direction).
[0091]
The above-described processing is performed on a series of images taken at any time from the start of shooting by the cameras 12 and 13. When the authentication subject 1 approaches from a distance, as shown in FIG. 19, the value of Dp / Di decreases as the pupil contracts, and the value of De / Dn increases as the position approaches. It is becoming. This change is sequentially stored in the iris state storage means 65 and 66, and the living body determination means 67 determines whether the change is a correct change if it is a living body. Further, a function of detecting a crossing may be added. The determination of the crossed eyes uses a change in the center distance between the inner or outer corner of the eye and the pupil.
[0092]
In the present embodiment, since the right eye and the left eye determine whether the subject is a living body, that is, whether it is a real eye, the living body can be determined more accurately. However, in the case where the processing time is shortened and the waiting time (time from the start of imaging to the end of authentication) of the person to be authenticated is shortened, the living body may be determined only with the right eye or only with the left eye.
[0093]
As described above, according to the present embodiment, the temporal change of the pupil contraction amount and the pupil direction are simultaneously executed with both eyes, thereby accurately determining whether or not the authentication target is the real eye. It is possible to prevent an object other than a living body from being incorrectly authenticated.
[0094]
(Seventh embodiment)
FIG. 20 is a configuration diagram of the iris authentication device according to the seventh embodiment of the present invention. This iris authentication device is basically the same as the first embodiment, but differs from the first embodiment in the arrangement positions of the cameras 12, 13 and the marker 24. That is, the iris imaging device 55 according to the present embodiment, when viewed from the front, arranges the right-eye imaging camera 12 on the right side, arranges the left-eye imaging camera 13 on the left side, and A marker 24 is provided at a position where the axes 12a and 13a cross each other, that is, at a crossing position on the back side of the cameras 12 and 13. The operation procedure of this iris authentication device is the same as in the first embodiment.
[0095]
In the iris authentication device according to the present embodiment, when the person to be authenticated 1 approaches from a remote place, the marker 24 provided in the iris imaging device 55 is visually recognized through the front panel 18 made of a transparent plate. Therefore, as shown in FIG. 21A, the person to be authenticated 1 only needs to approach the iris image pickup device 55 toward the marker 24. When the pupil of the right eye overlaps the optical axis 12a of the camera 12 for the right eye and the pupil of the left eye overlaps the optical axis 13a of the camera 13 for the left eye, the marker 24 is hidden behind the cameras 12 and 13. At this point, the right and left eye images good for in-focus authentication are captured by the cameras 12 and 13 at this point. Therefore, the subject 1 can easily determine the position of the standing position.
[0096]
When a visible light cut filter is used as the front panel 18, the marker in the iris imaging device 55 can be obtained by embedding a transparent resin plate in the middle where there is no need to cut visible light between the cameras 12 and 13. 24 can be visually recognized.
[0097]
In addition to providing the marker 24 inside the iris imaging device 55, a marker may be provided on the front panel. In this embodiment, the camera 13 arranged on the left side captures the left eye of the person to be authenticated by the camera 13 and the camera 12 disposed on the right side captures the right eye of the person to be authenticated. A marker 19 </ b> R and a marker 19 </ b> L having a hollow frame larger than the angle of view of the camera 13 are provided on the front panel 18. Thus, the subject 1 approaches the iris image pickup device 55 toward the marker 24 when the user is at a far position, and after the marker 24 is no longer visible, the subject 1 looks at the marker 19R with the right eye and the marker 19L with the left eye. I do. As a result, a highly accurate eye image can be captured.
[0098]
【The invention's effect】
According to the present invention, a good iris image of the right eye and the left eye is captured only by the natural operation of the subject to look at the center marker with both eyes, and the subject is aligned with the marker with only one eye. An unnecessary iris imaging device and iris authentication device can be provided.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an iris authentication device according to a first embodiment of the present invention.
FIG. 2 is an explanatory diagram of an arrangement of a visible light cut filter in the iris imaging device according to the first embodiment of the present invention.
FIG. 3 is an explanatory diagram of a marker arrangement in the iris imaging apparatus according to the first embodiment of the present invention;
FIG. 4 is an explanatory diagram showing a change in a distance from a subject and a pupil state in the iris imaging apparatus according to the first embodiment of the present invention.
FIG. 5 is a diagram showing an image captured by the iris imaging device according to the first embodiment of the present invention.
FIG. 6 is a configuration diagram of an iris authentication device according to a second embodiment of the present invention.
FIG. 7 is a flowchart showing an operation procedure of the iris authentication device according to the second embodiment of the present invention.
FIG. 8 is a configuration diagram of an iris authentication device according to a third embodiment of the present invention.
FIG. 9 is a time chart showing the operation of the iris authentication device according to the third embodiment of the present invention.
FIG. 10 is a configuration diagram of an iris authentication device according to a fourth embodiment of the present invention.
FIG. 11 is a configuration diagram of a position determination unit provided in an iris authentication device according to a fourth embodiment of the present invention.
FIG. 12 is an explanatory diagram of an operation of a position determining unit provided in the iris authentication device according to the fourth embodiment of the present invention.
FIG. 13 is a configuration diagram of an iris authentication device according to a fifth embodiment of the present invention.
FIG. 14 is a layout diagram of an induced illumination used in an iris authentication device according to a fifth embodiment of the present invention.
FIG. 15 is a layout view of another example of the guidance illumination used in the iris authentication device according to the fifth embodiment of the present invention.
FIG. 16 is an explanatory diagram of the operation of the guidance illumination used in the iris authentication device according to the fifth embodiment of the present invention.
FIG. 17 is a configuration diagram of an iris authentication device according to a sixth embodiment of the present invention.
FIG. 18 is an explanatory diagram of pupil direction detection in the iris authentication device according to the sixth embodiment of the present invention.
FIG. 19 is an explanatory diagram of a living body determination method in an iris authentication device according to a sixth embodiment of the present invention.
FIG. 20 is a configuration diagram of an iris authentication device according to a seventh embodiment of the present invention.
FIG. 21 is a layout diagram of markers used in an iris authentication device according to a seventh embodiment of the present invention.
And FIG. 22 is a flowchart showing a processing procedure of a conventional iris authentication method.
FIG. 23 is a configuration diagram of a conventional iris authentication device.
[Explanation of symbols]
1 Subject
1L Subject's left eye
1R Subject's right eye
2 pupil
3 iris
5 Right eye image
6 Left eye image
10, 20, 52, 53, 55 Iris imaging device
12 Right eye camera
12a, 13a Optical axis
13 Left eye camera
14. Lighting for right eye
15 Lighting for left eye
16, 17 image determination means
18 Front panel
19, 24 marker
30, 50, 51 Authentication unit
32, 33 iris data generating means
34 Database
34L Authentication code storage unit for left eye
34R Authentication code storage for right eye
35, 36 registration means
37, 38 collation means
39 Authentication determination means
40 User registration means
41 Similarity storage means
42 Position determination means
44 Position guidance means
45, 46 pupil position detecting means
47 Distance calculation means
61, 62 Induction lighting
63, 64 iris state detecting means
65, 66 Iris state storage means
67 Living body determination means
D Interpupillary distance value
Xa X coordinate of right eye pupil position
Ya Y coordinate of right eye pupil position
Xb X coordinate of left eye pupil position
Yb Y coordinate of left eye pupil position
Xmax image size width
Rp pupil radius
Ri iris radius
Lp Pupil detection threshold
Li iris detection threshold
Ls sclera detection threshold
Dp pupil diameter
Di iris diameter
De Scleral width on the ear side
Dn Nasal scleral width

Claims (18)

A mark to be visually recognized by the subject in both eyes, a first camera imaging the right eye of the subject in a state where the subject is viewing the mark in both eyes, and An eye image pickup device, comprising: a second camera that picks up an image of the left eye of the person to be authenticated while viewing with both eyes. 2. The eye image capturing apparatus according to claim 1, wherein a first illumination for illuminating a right eye of the authentication target and a second illumination for illuminating a left eye of the authentication target are provided. 3. 3. The eye image pickup device according to claim 1, wherein the mark is provided at an intersection between an optical axis of the first camera and an optical axis of the second camera. 4. The eye image pickup device according to claim 1, wherein the mark is provided at a position surrounding each angle of view of the first camera and the second camera. 3. The eye image pickup according to claim 1, wherein the mark is provided at a position shifted from an intersection between an optical axis of the first camera and an optical axis of the second camera. 4. apparatus. A first guidance light disposed adjacent to the first camera; and a second guidance light disposed adjacent to the second camera. The eye image pickup device according to any one of claims 1 to 5, wherein a position of the authentication subject is guided in an overlapping manner. 7. The eye image pickup device according to claim 6, wherein a color of the first guidance illumination is different from a color of the second guidance illumination. The first camera and the pupil position coordinates in a right-eye image of the person to be authenticated imaged by the first camera and pupil position coordinates in a left-eye image of the person to be authenticated imaged by the second camera; The eye image capturing apparatus according to claim 1, further comprising a position determining unit configured to determine a focus of each captured image of the second camera. 9. The eye image capturing apparatus according to claim 8, further comprising: means for guiding a position to the person to be authenticated when the position determination means determines that focusing is impossible. An image determination unit configured to compare a high frequency component amount included in an image signal of the captured image of the first camera and an image signal of the captured image of the second camera with a threshold value to determine a focus of the captured image. The eye image pickup device according to any one of claims 1 to 7, wherein An eye image capturing apparatus according to any one of claims 1 to 10, and a right eye authentication code generated from a captured image of a right eye of the subject captured from the eye image capturing apparatus to generate a right eye authentication code. Code data generating means for generating a left-eye authentication code from the captured image, a database storing the authentication code for the right eye and the authentication code for the left eye of the registrant, the authentication code for the right eye of the authenticated person, and the database And comparing means for comparing and matching the authentication code for the right eye stored in the database with the authentication code for the left eye of the subject with the authentication code for the left eye stored in the database. Individual authentication device. Registering the right-eye authentication code and the left-eye authentication code generated by the code data generation means in the registration mode for registering the right-eye authentication code or the left-eye authentication code of the subject in the database with the right-eye and left-eye identifiers 12. The individual authentication apparatus according to claim 11, further comprising a registration unit configured to register an identifier of a person as a set in the database. 13. The individual authentication device according to claim 12, wherein the code data generation unit, the authentication unit, and the registration unit are provided separately for a right eye and a left eye. When the collating means compares and matches the authentication code for the right eye of the subject with the authentication code for the right eye stored in the database, and determines that the subject is not a registrant, 14. The individual authentication apparatus according to claim 11, further comprising an authentication determination unit configured to compare and authenticate an authentication code with a left-eye authentication code stored in the database to perform identity verification. . The authentication determining unit compares and compares the right-eye authentication code with the left-eye authentication code based on the similarity of each right-eye authentication code corresponding to the right-eye authentication code. The individual authentication device according to claim 14, wherein the order in which the identification is performed is determined. When the matching means compares and matches the authentication code for the left eye of the subject with the authentication code for the left eye stored in the database, and determines that the user is not a registrant, 14. The individual authentication apparatus according to claim 11, further comprising an authentication determination unit configured to compare and authenticate an authentication code with a right-eye authentication code stored in the database to perform identity verification. . The authentication determination unit compares and compares the left-eye authentication code with the right-eye authentication code based on the similarity of each left-eye authentication code corresponding to the left-eye authentication code. 17. The individual authentication device according to claim 16, wherein the order in which the operations are performed is determined. A living body determination unit that determines whether the living body of the subject is correct based on at least one of a change in an image captured by the first camera and a change in an image captured by the second camera. An individual authentication device according to any one of claims 11 to 15.

Images