JP4487592B2 - Iris authentication system, iris photographing device, iris recognition device, iris authentication method and registration target authentication system - Google Patents

Description

  The present invention relates to an iris authentication system for performing identity authentication by photographing an iris (iris) pattern with a camera in a non-contact manner, an iris input adapter for assisting the input of the iris in the iris authentication system, and an iris via the iris input adapter. Iris photographing device for photographing, iris recognition device for performing personal authentication based on an iris image photographed by the iris photographing device, an iris authentication method for realizing the iris authentication system, and a registration object is photographed in a contactless manner. The present invention relates to a registration target authentication system that performs personal authentication.

  In recent years, a technique using an iris has been developed for an individual security check. The conventional iris authentication system is equipped with a wide-angle camera with a wide-angle lens that captures the entire face of the person to be recognized and a zoom lens that magnifies and captures the iris separately from the wide-angle camera at the location where the security check is to be performed. This is a system in which an iris photographing device (magnifying camera) is installed. In this iris authentication system, after the wide-angle camera captures the entire face of the person to be recognized and determines the iris position, the magnifier camera photographs the periphery of the iris, and the iris recognition device built in the magnifier camera detects the iris image from the iris image. The user is authenticated by creating an iris code and comparing the created iris code with an already registered iris code (for example, refer to Patent Document 1).

  FIG. 22 is a diagram for explaining the concept of a conventional iris authentication system. The outline of this type of iris authentication system will be described below with reference to the drawings. Here, the case where the iris peripheral part X1 of the recognition subject person X is imaged will be described.

  The conventional iris authentication system includes a wide-angle lens 3, a wide-angle camera 4 with the wide-angle lens 3, a zoom lens 5, a magnifying camera 6 with the zoom lens 5, and an optical axis of the magnifying camera 6. A mirror 8 arranged, a pan / tilt table 7 for controlling the angle of the mirror 8, large illuminators 9 a and 9 b for illuminating the recognition target person X, and an iris built in the magnifying camera 6 It mainly includes a recognition device.

  In this iris authentication system, the wide-angle camera 4, the magnifying camera 6, the pan / tilt table 7, and the illumination devices 9 a and 9 b are connected to each other by wires (not shown) so that data communication is possible. The illumination devices 9a and 9b include a proximity sensor (not shown). When the proximity sensor detects the recognition target person X, the illumination devices 9a and 9b turn on the illumination, and the wide-angle camera 4, the enlargement camera 6, and the pan / tilt table 7 are turned on. Detection information is sent and each is returned from the idle state.

  In this iris authentication system, first, the face and the periphery of the recognition target person X are illuminated by the lighting devices 9a and 9b. Then, the wide-angle camera 4 captures the entire bright face. The image data of the entire face is sent to an iris recognition device (not shown) built in the magnifying camera 6. In this iris recognition apparatus, the image data is analyzed to identify the iris peripheral part X1, its position information is calculated, and the control information of the pan / tilt table 7 is calculated based on this position information.

  This control information is a C-axis rotation angle and a D-axis rotation angle in the figure. The C-axis rotation angle is an angle that determines the vertical direction of the mirror 8 by rotating the mirror 8 pivotally supported by the pan / tilt table 7 about the horizontal axis about the C-axis. The D-axis rotation angle is an angle that determines the left-right direction of the mirror 8 attached to the pan / tilt table 7 by rotating the pan / tilt table 7 itself supported by the vertical axis itself around the D-axis.

  The pan / tilt table 7 controls the angle of the mirror 8 based on control information sent from an iris recognition device (not shown) so that the optical axis of the magnifying camera 6 is directed toward the iris peripheral part X1. Then, since the magnifying camera 5 can shoot the iris peripheral part X1, the shoot starts. An iris recognition device (not shown) extracts an iris feature from the acquired image data and creates an iris code. This iris code is a code created based on a predetermined rule, and is a code that does not become the same iris code from image data of different irises.

  Therefore, an iris recognition device (not shown) determines whether or not the iris code created this time is the same among the previously registered iris codes, and if the two codes match, the recognition target person X Authenticates the person who has been registered in advance.

Therefore, in the conventional iris authentication system, in order to photograph the iris, the recognition target person X is illuminated using the large illuminating devices 9a and 9b, and the two cameras of the wide-angle camera 5 and the magnifying camera 6 are used. Use to shoot. For this reason, a large apparatus is required to be installed in a place where a security check is desired, and a large amount of power is required.
JP 2001-358987 A

  For this reason, in the conventional iris authentication system, two cameras and a large illumination device are required to shoot a recognition target person in a wide range with a wide-angle camera and then take an iris with a magnifying camera. In addition, there is a problem that a large-scale apparatus is required, and a large installation area is required, which makes the apparatus expensive. In addition, since the wide-angle camera and the magnifying camera are configured separately, an advanced image processing algorithm for calculating the position of the iris photographed by the magnifying camera based on the image data photographed by the wide-angle camera has been indispensable. Since this image processing algorithm needs to be adjusted according to the installation environment, the installation work becomes complicated, leading to a problem that places a burden on the installation worker.

  In view of the above-described problems, the present invention reduces the burden on an installation worker with a simple configuration, and enables an iris authentication system that can photograph an iris easily and at high speed with high accuracy, and input of an iris image in the iris authentication system. Iris input adapter to assist, Iris imaging device that captures iris images with the assistance of this iris input adapter, Iris data is created from the iris image captured by this iris imaging device, and the iris code already registered with the created iris code It is an object of the present invention to provide an iris recognition device that compares a code with a recognition target person and confirms the identity of the recognition target person, and a registration target authentication system that does not limit the comparison target to an iris.

  In order to solve the above-described problem, in the iris authentication system of the present invention, a light source unit is formed in which a peephole is formed so that the person to be recognized can be peeked into the eye, and the illumination unit illuminates the iris region appropriately disposed on the periphery of the peephole. An iris input adapter provided; wide-angle photographing means for photographing a recognition subject at a wide angle while the illumination part and the light source part of the iris input adapter are turned on; and the light source part from image data photographed by the wide-angle photographing means. A pattern extraction unit that extracts a feature pattern of a portion that is lit, an iris position calculation unit that calculates an iris position based on the feature pattern extracted by the pattern extraction unit, and an iris position calculated by the iris position calculation unit Enlarged photographing means for focusing and magnifying the iris, and iris image data photographed by the magnified photographing means Iris code creating means for creating an iris code by encoding, an iris code registered in advance as an iris code of the person to be authenticated, and the iris code created this time by the iris code creating means and the called iris code Iris code comparison means for comparison, and recognition target person determination means for determining as a normal recognition target person when the iris code matches, and determining as an unauthorized recognition target person when the iris code does not match It is characterized by that.

  As described above, in the present invention, the iris peripheral part is identified based on the feature pattern such as the shape illuminated by the light source part of the iris input adapter, and the iris peripheral part illuminated by the illumination part of the iris input adapter is magnified. Thus, since the iris image data can be acquired, the iris peripheral portion can be photographed by the light source unit and the illumination unit of the iris input adapter without installing the iris illumination device. As a result, the configuration of the equipment to be installed becomes simple, making the installation work easier, reducing the burden on the installation operator, and installing the lighting equipment as in the past because the lighting equipment is not installed and operated. This also leads to a reduction in power consumption.

  Furthermore, for example, in a place where a surveillance system using a surveillance camera has already been introduced, the surveillance camera can be used as an iris photographing apparatus. That is, the surveillance camera can first extract the feature pattern of the portion illuminated by the light source unit of the iris input adapter, and photograph the periphery of the iris with the portion having the feature pattern as the iris position. For this reason, it is possible to introduce an iris authentication system using a monitoring system that has already been installed. This reduces the cost of introducing the iris authentication system and promotes the popularization of the iris authentication system. .

  The iris input adapter, the wide angle photographing means, the pattern extracting means, the iris position calculating means, and the enlarged photographing means, an iris photographing apparatus, the iris code creating means, the iris code comparing means, and the recognition target It is preferable that the iris recognition device includes a person determination unit, and the iris photographing device and the iris recognition device are communicably connected via a network.

  In this way, by connecting the iris photographing device and the iris recognizing device through a network, a plurality of iris photographing devices are appropriately installed at a place where a security check is performed, and at least an iris image photographed by each iris photographing device is obtained. The iris code can be created, compared, and discriminated by a single iris recognition device. If the iris recognition device is installed at a high security level, software related to creation of the iris code can be protected.

  An iris comprising the iris input adapter, the wide angle photographing means, the pattern extracting means, the iris position calculating means, the enlarged photographing means, the iris code creating means, the iris code comparing means, and the recognition target person determining means. It may be a recognition device.

  Since such an iris recognition device includes all the means other than the iris input adapter, it can be easily installed in a place where there are a small number of persons to be recognized and there is only one place to perform a security check. be able to. For this reason, for example, such an iris recognition device can be easily installed at the entrance of a home or the like, so that the family can be easily authenticated by registering the family's iris code. it can. Therefore, it is possible to give the iris input adapter a role as a key.

  Furthermore, it is preferable to include an iris code registration means for registering the iris code created by the iris code creation means as the iris code of the person to be authenticated.

  As described above, when the iris code registration means for registering the iris code is always provided in the iris authentication system, it is possible to easily register the iris of the person who is newly recognized. If the iris authentication system is not equipped with an iris code registration means, the iris code is registered with the iris authentication system equipped with the iris registration means, and the registered iris code is stored in a storage medium such as a removable medium or a network. However, the iris code may be leaked from the storage medium or the network. Therefore, it is preferable that the iris code registration means is already mounted in the iris authentication system as described above.

  The iris input adapter further includes a personal information storage unit that stores the personal information of the person to be recognized so that writing and erasing are prohibited and readable, and a communication unit that transmits the personal information stored in the personal information storage unit. The iris recognition device includes a principal information database storage unit storing a principal information database for registering principal information of a person to be recognized, principal information transmitted from the iris input adapter, and the principal information database. A personal information comparing means for comparing the personal information stored in the storage unit, and a personal information determining means for determining that the person to be authenticated is a legitimate recognition person if they match, the person to be recognized The person to be recognized may be authenticated based on the determination result of the determination unit and the determination result of the personal information determination unit.

  In this way, the identity information is stored in the iris input adapter, and the identity information can be used to determine and authenticate the owner of the iris input adapter, compared to the iris only authentication. An even higher security check can be performed. Further, by storing the personal information of the person to be recognized in such a manner that writing and erasure are prohibited and readable, even if another person possesses the iris input adapter, rewriting of the personal information can be prevented.

  The iris input adapter is provided with an access code for classifying the access status according to the type, and at least two types of personal information are stored in the personal information storage unit. The iris recognition device has a predetermined authentication level. And an access code database storage unit storing an access code database for registering an access code for accessing the personal information stored in the personal information storage unit, and personal information requested according to a predetermined authentication level And an access code determining means for determining an access code for determining the at least two types of personal information corresponding to the access code in a personal information database storage unit, wherein the personal information determining means The iris input adapter according to the access code determined by the code determination means. The identity information transferred from the personal information is compared with the identity information stored in the identity information database storage unit, and the identity information determination means uses the comparison result of the identity information comparison means as a reference for identity authentication. You may make it judge.

  In this way, by distinguishing the identity information to be referred to by the access code, it becomes possible to set a security level according to the place where the security check is performed. For example, at location A, a security check is performed only with the identity information corresponding to access code 1, and at location B, a security check is performed only with the identity information corresponding to access code 2, and at location C, all identity information and irises are checked. This is a case where a security check is performed depending on the code.

  The identity information storage unit and the identity information database storage unit use the iris code as the access code, store identity information corresponding to the iris code, and create the iris code creation unit. The identity information may be read from the iris input adapter according to the iris code, and the identity information determination means may determine the identity information based on the iris code as the access code.

  In this way, the identity information is managed using different irises as the keys, so only the person who entered the same iris code as the registered iris code via the iris input adapter can refer to the identity information. Therefore, the personal information can be managed with high security, and tampering can be prevented.

  The access code is at least two kinds of codes depending on whether or not an iris image is input, and is determined when an iris image is not input from the iris input adapter to the principal information storage unit and the principal information database storage unit. You may make it memorize personal information.

  In this way, it is possible to authenticate the person by changing the security level depending on whether the iris image is input or not.

  Note that, as described above, the iris input adapter includes a light source unit that forms a peep hole that allows the person to be recognized to peek at the eye, and that is appropriately disposed at the periphery of the peep hole, and an illumination unit that illuminates the iris region. However, it is preferable to arrange the light source part in a ring shape around the peephole. Even if it is not ring-shaped, it may be arranged at a predetermined location, or it may be arranged at two locations, as long as it is arranged in a ring shape. Even if the ring is continuous, a plurality of light emitting elements may be discontinuously arranged in a ring shape. Moreover, it is preferable to mount a light emitting element that emits light in a near infrared region on at least one of the light source unit and the illumination unit. Moreover, you may make it provide the principal information memory | storage part which memorize | stores read-only person information of a recognition subject so that reading is possible. The personal information storage unit may store at least two types of personal information corresponding to the authentication level in association with the iris code. Furthermore, you may make it provide the lighting button which lights the said light source part and the said illumination part.

  Further, the present invention provides the illumination unit of the iris input adapter, which includes a light source unit that appropriately forms a peephole that allows the person to be recognized to peek into and can be viewed, and an illumination unit that illuminates the iris region. And wide-angle photographing means for photographing a recognition subject at a wide angle while the light source unit is lit, and pattern extracting means for extracting a feature pattern of a portion where the light source part is lit from image data photographed by the wide-angle photographing unit; The iris position calculating means for calculating the iris position based on the feature pattern extracted by the pattern extracting means, the enlargement photographing means for focusing on the iris position calculated by the iris position calculating means and photographing the iris in an enlarged manner, and The iris code created by encoding the iris image data photographed by the magnification photographing means and the iris code of the person to be authenticated are previously stored. Compared with the recorded iris code, when the iris code is matched, it is determined as a regular recognition target person, and when the iris code is not matched, the iris recognition device is determined as an unauthorized recognition target person. There is provided an iris photographing apparatus comprising communication means for transferring iris image data.

  Further, the present invention provides the illumination unit of the iris input adapter, which includes a light source unit that appropriately forms a peephole that allows the person to be recognized to peek into and can be viewed, and an illumination unit that illuminates the iris region. And wide-angle photographing means for photographing a recognition subject at a wide angle while the light source unit is lit, and pattern extracting means for extracting a feature pattern of a portion where the light source part is lit from image data photographed by the wide-angle photographing unit; The iris position calculating means for calculating the iris position based on the feature pattern extracted by the pattern extracting means, the enlargement photographing means for focusing on the iris position calculated by the iris position calculating means and photographing the iris in an enlarged manner, and An iris code creating means for creating an iris code by encoding the iris image data photographed by the magnification photographing means; Iris code comparison means for calling an iris code registered in advance as an iris code and comparing the iris code created this time with the iris code created by the iris code creation means, and when the iris code is matched, There is provided an iris recognition apparatus comprising: a recognition target person determination unit that determines a recognition target person and determines that the iris code is an illegal recognition target person when the iris codes do not match.

  Further, the present invention provides an iris input adapter comprising: a light source unit that forms a peep hole that allows a person to be recognized to peek into the eye, and that is appropriately arranged at the periphery of the peep hole; and an illumination unit that illuminates the iris region. The light source unit and the illumination unit are turned on, the person to be recognized is photographed at a wide angle, the feature pattern of the portion where the light source unit is lit is extracted from the acquired image data, and the calculation is performed based on the feature pattern. Iris image data is obtained by focusing on the iris position to obtain the iris image data, the iris image data is encoded to create an iris code, and an iris code registered in advance as the iris code of the person to be recognized is called. The iris code created this time is compared with the called iris code, and when the iris code matches, it is determined that the person is a regular recognition target, Risukodo is in the case of mismatch provides an iris authentication method characterized by determining an unauthorized person to be recognized.

  In addition, the present invention provides a recognition target input adapter including a light source unit that appropriately forms a peephole for peeping a recognition target, and an illumination unit that illuminates the recognition target, and the recognition target input adapter. Wide-angle photographing means for photographing a recognition target at a wide angle while the illumination section and the light source section are turned on, and a pattern for extracting a feature pattern of a portion where the light source section is lit from image data photographed by the wide-angle photographing means An extraction unit, a recognition target position calculation unit that calculates a recognition target position based on the feature pattern extracted by the pattern extraction unit, and an enlarged recognition target by focusing on the recognition target position calculated by the recognition target position calculation unit Enlargement photographing means for photographing, and recognition target code creating means for creating a recognition target code by encoding the recognition target image data photographed by the magnification photographing means A recognition target code comparing means for calling a recognition target code registered in advance as a recognition target code of a recognition target, and comparing the recognition target code created this time with the recognition target code created by the recognition target code; A registration target authentication system comprising: a recognition target determination unit that determines that the target code is a regular recognition target when the target code matches, and determines that the target code is an unauthorized recognition target when the recognition target code does not match Can also be provided.

  In this registration target authentication system, in the above-mentioned iris authentication system, the iris was the object to be imaged, recognized, compared, and discriminated, but in addition to the iris, some or all of the objects or people arbitrarily selected by the recognition target person The image data of the subject such as is registered as the recognition target, and the registration target is input through the recognition target input adapter at the time of authentication. The recognition target can be authenticated by comparing the recognition target codes created on the basis of a predetermined standard. In this case, since the recognition target person registers the recognition target code based on the image data such as an arbitrary object, only the registered recognition target person cannot know the image data such as the registered object. As with the case, it is possible to ensure high security.

  According to such an iris authentication system, the person to be authenticated can carry an iris input adapter including a light source unit and an illumination unit, and illuminate the peripheral part of the iris using the iris input adapter in front of the iris photographing apparatus. Therefore, it is possible to accurately photograph the periphery of the iris without installing an illumination device in the vicinity of the iris photographing device. Therefore, an iris authentication system that can reduce the burden on the installation worker with a simple configuration and can easily and quickly shoot the iris with high accuracy, an iris input adapter that assists the input of the iris image in the iris authentication system, and this iris input Iris imaging device that captures iris images with the aid of an adapter, and creates iris data from the iris image captured by this iris imaging device, and compares the created iris code with an already registered iris code to recognize It is possible to inexpensively provide an iris recognition device that performs identity verification and a registration target authentication system that does not limit the registration target to be compared to the iris.

  In addition, since the iris authentication system of the present invention does not require a large-scale illumination device as in the past, as described above, an image acquired by a surveillance camera recently installed for monitoring an entrance or a customer operation terminal. It is also possible to extract the iris from the data.

  Therefore, in the iris authentication system of the present invention, when applied to a place where a surveillance camera is already installed, an iris recognition device that controls the surveillance camera and can acquire image data from the surveillance camera is installed, and If a proximity sensor is installed around the surveillance camera, it is possible to authenticate the person to be recognized who carries the iris input adapter. In other words, using an existing surveillance camera makes it possible to introduce an iris authentication system, which is economical and leads to the introduction of the iris authentication system, which is a high-performance security system. It will also spread and encourage security improvements.

(First embodiment)
Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. FIG. 1 is a network configuration diagram illustrating an example of an iris authentication system according to the present invention. As will be described later, the iris authentication system 1000 acquires an iris image data by photographing an iris input adapter 100 provided with an illumination unit that illuminates the iris peripheral part and the iris peripheral part assisted by the iris input adapter 100. Creates an iris code from the iris image capturing devices 200, 200, 200... And the iris image data transferred from the iris image capturing devices 200, 200, 200... And an LAN 400 that connects the iris recognition device 300 and the iris photographing devices 200, 200, 200,...

  Note that the iris photographing devices 200, 200, 200,... Are each installed at a location (gate) where security check is desired. For example, it is installed in the vicinity of the gate in the site of the dredging facility, in the vicinity of the entrance to the building A, and in the vicinity of the entrance to the building B. The LAN 400 may be a WAN or a network such as the Internet as long as security can be maintained.

  In particular, in the case of a network that can be accessed by any person such as the Internet, it is necessary to make the data to be transferred indecipherable by using encryption technology or put a firewall, but it is decrypted even if it is encrypted. For security reasons, it may be a closed network rather than an open network like the Internet. preferable. Therefore, it is assumed that the LAN 400 described here is not connected to an external network. Further, when only one iris photographing apparatus 200 is installed, any type of cable may be used as long as it is not a LAN cable but a dedicated line. Further, it may be a network that does not use a wire such as a wireless LAN.

  With such a network configuration, when the person to be recognized comes in front of each gate, the face with the iris input adapter 100 in his / her eye is directed toward the iris photographing apparatus 200, and the iris peripheral part of the iris is directed to the iris photographing apparatus 200. Let the shoot take place.

  An outline of the iris photographing operation at this time will be described with reference to the drawings. FIG. 2 is a diagram for explaining the iris photographing operation of the first embodiment of the present invention. The iris photographing apparatus 200 senses a person, an iris photographing camera 201, a zoom lens 202 and a camera 203 built in the iris photographing camera 201, a pan / tilt table 204 for changing the orientation of the iris photographing camera 201, and a person. The proximity sensor 205 and a display unit 206 for displaying notification information such as an authentication result are mainly provided. Each component is connected to a CPU, which will be described later, by wiring so that signals can be exchanged with the CPU.

  The iris photographing camera 201 is pivotally supported on the pan / tilt table 204 so as to be rotatable about the horizontal axis B. The iris photographing camera 201 rotates about the horizontal axis B so that the optical axes of the built-in camera 203 and zoom lens 202 can move up and down with respect to the subject. The camera 203 includes, for example, a CCD image sensor, photoelectrically converts a captured image, and outputs image data as an electrical signal to a CPU described later.

  The pan / tilt table 204 is rotatable about the vertical axis A. Therefore, since the iris photographing camera 201 is attached to the pan / tilt base 204, the optical axes of the built-in 203 and the zoom lens 202 with respect to the subject are rotated by the rotation about the vertical axis A of the pan / tilt base 204. Can be moved in the left-right direction.

  The proximity sensor 205 is an infrared sensor, for example, and senses infrared rays emitted from the recognition target person X that is a subject.

  The iris photographing device 200 captures images when the recognition target person X is looking at the zoom lens 202 of the iris photographing camera 201 while holding the iris input adapter 100 in the hand X2 with his / her eye (iris peripheral portion X1). Perform the action. At this time, the person to be recognized X holds the iris input adapter 100 with one hand X2, operates the button 102, and turns on the light source unit 101.

  As will be described later, the light source unit 101 is arranged in a ring shape around the periphery of the viewing hole 103 formed in the iris input adapter 100. The ring-shaped light emitted from the light source unit 101 is photographed in a ring shape even in a wide-angle photographed image of the entire face photographed by the iris photographing apparatus 200. That is, the ring-shaped light has a role as a feature pattern. The iris photographing apparatus 200 can photograph the iris peripheral part X1 by extracting a ring-shaped feature pattern from an image obtained by wide-angle photographing and enlarging the feature pattern. . Therefore, as will be described later, the iris photographing apparatus 200 particularly incorporates a pattern extraction module that is a program for extracting a ring-shaped feature pattern in a storage unit (not shown).

  FIG. 3 is a schematic block diagram illustrating the hardware configuration of the iris imaging apparatus according to the first embodiment of the present invention. The iris photographing apparatus 200 includes the adjustment of the focal length of the zoom lens 202, the photographing operation of the camera 203, the angle control of the pan / tilt table 204, the monitoring of the proximity sensor 205, and the display of various notification information on the display unit 206. A CPU 207 that supervises the above processing, an interface (I / F) 208 for connecting to the iris recognition device 300 (see FIG. 1) via the LAN 400 (see FIG. 1), and an iris for photographing the iris of the present invention. It mainly includes a storage unit 209 that stores various programs such as an image capturing program P20 and an operating system (OS) P1, and various data such as captured image data.

  As will be described later, the CPU 207 sequentially reads the (OS) P1 and the iris image photographing program P20 from the storage unit 209, and photographs the iris peripheral part X1 (see FIG. 2) of the recognition target person X (see FIG. 2). . When the CPU 207 monitors the proximity sensor 205 and obtains a signal indicating that the recognition target person X (see FIG. 2) has come in front of the iris photographing apparatus 200, the CPU 207 controls the zoom lens 202 to recognize the recognition target person. The camera 203 performs wide-angle shooting that can shoot the entire face of X.

  At this time, for example, a mark indicating the standing position of the person to be recognized X (see FIG. 2) is attached in front of the iris photographing apparatus 200, and the zoom lens 202 is provided so that the camera 203 can take a wide-angle image of the vicinity of the mark. Control is sufficient. In addition, the angle control of the pan / tilt table can be performed with the home position when the proximity sensor 205 detects the recognition target person X by setting the position where the vicinity of the mark can be photographed as the home position. .

  Then, the CPU 207 extracts a feature pattern of ring-shaped light emitted from the light source unit 101 (see FIG. 2) from image data obtained by wide-angle imaging, and calculates its position. Based on the calculated position, the CPU 207 controls the angle of the pan / tilt table 204 and the zoom lens 202 to focus on the iris peripheral portion X1 (see FIG. 2) of the recognition target person X (see FIG. 2). . When the CPU 207 acquires the image data from the camera 203, the CPU 207 determines whether the acquired image data includes the iris image data, and transmits the acquired iris image data to the iris recognition apparatus 300 from the I / F 208.

  FIG. 4 is a schematic block diagram illustrating the software configuration of the iris imaging apparatus according to the first embodiment of the present invention. In the iris photographing apparatus 200, the CPU 207 (see FIG. 3) sequentially reads and executes the iris image photographing programs P20 and OSP1 from the storage unit 209 (see FIG. 3). Here, the software configuration is described as a module divided for each function executed by the CPU 207, but it is configured as an iris image capturing program P20 or OSP1 of an integrated algorithm even if the function is not separable as a module. May be.

  The iris image photographing program P20 includes a proximity sensor recognition module P21, a wide-angle photographing module P22, a pattern extraction module P23, an iris position calculation module P24, an enlargement photographing module P25, an iris extraction / registration module P26, and a zoom lens control. It mainly includes a module P27 and a pan / tilt table control module P28.

  The proximity sensor recognition module P21 is a program that incorporates steps for monitoring a sensing signal sent from the proximity sensor 205. The CPU 207 (see FIG. 3) treats the sensing signal as an interrupt event, and executes the iris image photographing program while acquiring the sensing signal. The proximity sensor recognition module P21 functions as a proximity sensor recognition unit when the CPU 207 shown in FIG. 3 sequentially reads from the storage unit 209 and is executed.

  The wide-angle shooting module P22 is a program that incorporates a step of taking a wide-angle shot of the entire face (or upper body or whole body) of the person X to be recognized by controlling the zoom lens 202, the camera 203, and the pan / tilt table 204 shown in FIG. is there. As described above, the CPU 207 (see FIG. 3) confirms that the pantilde table 204 (see FIG. 3) is at the home position, and the zoom lens 20 (see FIGS. 2 and 2) with respect to the recognition target person X (see FIG. 2). 3) is focused at a wide angle, and the camera 203 performs shooting to acquire a wide-angle shot image. The wide-angle photographing module P22 functions as a wide-angle photographing unit when the CPU 207 shown in FIG. 3 sequentially reads from the storage unit 209 and is executed.

  The pattern extraction module P23 is a program incorporating a step for searching for a ring-shaped light portion emitted from the light source unit 101 (see FIG. 2) of the iris input adapter 100 as a feature pattern from a wide-angle photographed image. The CPU 207 (see FIG. 3) scans and searches whether or not a ring-shaped feature pattern registered in advance is present in the wide-angle captured image. The pattern extraction module P23 functions as a pattern extraction unit by the CPU 207 sequentially reading from the storage unit 209 and executing it as shown in FIG.

  The iris position calculation module P24 calculates the position in the image data of the feature pattern extracted by the pattern extraction means and the pan / tilt table 204 (see FIG. 3) so that the position can be enlarged. A program incorporating a step of creating a signal for adjusting an angle. For example, the CPU 207 (see FIG. 3) sets the coordinates in the acquired image space, calculates the coordinates of the feature pattern in the image space, and zooms in on the camera 203 and the zoom lens 202 in order to magnify the periphery of the coordinates. An angle for adjusting the angle of the pan / tilt table 204 for aligning the optical axes is calculated. The iris position calculation module P24 functions as an iris position calculation unit when the CPU 207 shown in FIG. 3 sequentially reads from the storage unit 209 and is executed.

  The enlargement photographing module P25 is a program incorporating a step of enlarging and photographing the iris peripheral portion X1 of the recognition target person X by controlling the zoom lens 202, the camera 203, and the pan / tilt table 204 shown in FIG. The CPU 207 (refer to FIG. 3) controls the angle of the punched base 204 (refer to FIG. 3), and the zoom lens 20 (refer to FIGS. 2 and 3) to the iris peripheral part X1 (refer to FIG. 2) of the recognition target person X. The camera 203 (see FIG. 3) performs shooting to acquire an enlarged shot image. The enlargement photographing module P25 functions as enlargement photographing means when the CPU 207 shown in FIG. 3 sequentially reads out from the storage unit 209 and is executed.

  The iris extraction / registration module P26 is a program that incorporates steps for extracting iris image data from an enlarged photographed image photographed by the camera 203 (see FIG. 3) and registering the extracted iris image data. As will be described later, the CPU 207 (see FIG. 3) extracts the features of the iris, confirms the presence of the iris, and registers it as iris image data. The iris extraction / registration module P26 functions as an iris extraction / registration unit when the CPU 207 shown in FIG.

  The zoom lens control module P27 is a program that incorporates steps for performing focusing control for wide-angle shooting and focusing for zoom-in shooting in accordance with the control of the wide-angle shooting unit and the magnification shooting unit. The zoom lens control module P27 functions as zoom lens control means when the CPU 207 shown in FIG. 3 sequentially reads from the storage unit 209 and is executed.

  The pan / tilt table control module P28 is a program in which steps for adjusting the home position for wide-angle photographing and controlling the angle for magnified photographing according to the control of the wide-angle photographing means and the magnified photographing means are incorporated. The pan / tilt table control module P28 functions as a pan / tilt table control unit when the CPU 207 shown in FIG.

  On the other hand, the operating system (OS) P1 may be a general-purpose OS such as Linux or Windows manufactured by Microsoft Corporation or a dedicated OS. In particular, the OSP1 only needs to incorporate the display control module P2 and the communication control module P3.

  The display control module P2 is used to display notification information such as authentication OK on the display unit 206 (see FIG. 3). The communication control module P3 performs communication via the LAN 400 (see FIG. 1) according to the TCP / IP protocol, for example. Note that the display control module P2 and the communication control module P3 function as a display control unit and a communication control unit by the CPU 207 sequentially reading from the storage unit 209 and being executed as shown in FIG.

  5A and 5B are views for explaining an overview of the iris input adapter according to the first embodiment of the present invention. FIG. 5A is a plan view and FIG. 5B is a cross-sectional view taken along the line XX. The iris input adapter 100 is a card-type adapter in which a front cover 114 and a back cover 115 form an outer shape and a peep hole 103 is formed, and a structure in which a ring-shaped light source unit 101 is particularly arranged on the periphery of the peep hole 103 It has.

  In the light source unit 101, a plurality of illumination elements 121 are arranged in a ring shape, and the light emitted from each illumination element 121 is diffused by the ring-shaped diffusion plate 122 so as to emit ring-shaped light in the direction of arrow E. It has become.

  Further, a button 102 is arranged on the surface of the iris input adapter 100, and an attachment fitting 120 is attached to the end opposite to the end where the peep hole 103 is arranged so as to be sandwiched from the thickness direction. The mounting bracket 120 has a role of allowing it to be carried down from the neck through a string.

  The iris input adapter 100 includes batteries 111a and 111b for supplying power to an internal space formed by the front cover 114 and the back cover 115, an illumination element 112 for illuminating the iris, a substrate 113 on which these are mounted, and the like. Each part is built in.

  The iris input adapter 100 includes an illumination reflection cover 116 for condensing the light emitted from the illumination element 112 on the back side to illuminate the iris, a transparent illumination cover 117 for protecting the illumination element 112, and a button 102. Components such as an electrode terminal 118 for turning on / off and a lighting element driving circuit 134 for driving each lighting element are further incorporated.

  The electrode terminal 118 is formed on the substrate 113, and the conductive surface disposed on the back side of the button 102 contacts the electrode terminals 118 and 119, whereby the electrode terminals 118 and 119 are electrically connected. The switch is turned on. The button 102 may be held in a pressed state by a mechanism (not shown).

  Moreover, since the illumination element 112 collects light in the direction of the arrow F in the peephole 113 by the illumination reflection cover 116 and the illumination cover 117, the illumination element 112 functions as the illumination unit 138 that illuminates the iris. In the iris input adapter 100, the illumination angle of the illumination unit 138 is important. However, if the iris can be brightly illuminated to a level where the iris can be recognized, the iris input adapter 100 is made as thin as possible, and the burden when carrying it around. Is preferably reduced.

  In the iris input adapter 100, when the button 102 is pressed, the bottom surface made of a conductive material comes into contact with both electrode terminals 118 and 119, and the electrode terminals 118 and 119 are electrically connected to each other. The light source unit 101 and the illumination unit 138 are turned on. In the light source unit 101, light emitted from a plurality of illumination elements 121 mounted in a ring shape on the substrate is uniformly diffused in a ring shape by the ring-shaped diffusion plate 122 in the direction of arrow E. The illumination unit 138 illuminates toward the arrow F so as to collect light in the peephole 103. The light emitted in the direction of the arrow F illuminates the iris peripheral portion X2 (see FIG. 2), and the reflected light enters the iris photographing apparatus 200 (see FIG. 2) through the viewing hole 103. The illumination cover 117 has a curvature and smoothes the part that comes into contact with the skin.

  Moreover, although each illumination element used for the light source part 101 and the illumination part 138 may be the same, it is different, but as for all, the near infrared wavelength effective for the reflection characteristic with an iris pattern is assumed as the same. It is preferable to use an element having In this case, since the iris photographing camera 201 (see FIG. 2) can be provided with sensitivity characteristics of near-infrared wavelengths, the iris pattern can be photographed with high accuracy.

  In addition, when the iris input adapter 100 wants to visually monitor the operation of inputting the iris, an element in the visible light region is used as the illumination element 121 of the ring light source unit 101 in addition to the near-infrared wavelength element. It may be mounted along the curve of the ring-shaped diffuser plate 122 so that it is lit simultaneously. Thus, when the button 2 is pressed, the light source unit 101 is turned on with visible light, and it is possible to visually confirm that the iris is being input from the supervisor.

  FIG. 6 is a schematic block diagram illustrating the hardware configuration of the iris recognition apparatus according to the first embodiment of the present invention. The iris recognition apparatus 300 is an interface (I / I) that controls communication between the CPU 301 that controls the entire control and the iris photographing apparatuses 200, 200, 200... (See FIG. 1) via the LAN 400 (see FIG. 1). F) 302, a display unit 303 for displaying various information, an operating system (OS) P1 executed by the CPU 301, an iris authentication program P30 for performing iris authentication based on iris image data, and an iris code referred to by the iris authentication program P30 It mainly includes a storage unit 304 that stores a database (DB) M1.

  As will be described later, the CPU 301 sequentially reads the OSP1, the iris authentication program P30, and the iris code database (DB) M1 from the storage unit 304, and creates an iris code from the iris image data of the recognition target person X (see FIG. 2). Then, referring to the iris code DBM1, it compares with the previously registered iris code, and authenticates the person depending on whether or not they match.

FIG. 7 is a schematic block diagram illustrating a software configuration of the iris recognition apparatus according to the first embodiment of this invention. In the iris recognition apparatus 300, the CPU 301 (see FIG. 6) reads and executes the iris authentication program P30, OSP1, and the iris code DBM1 in order from the storage unit 304 (see FIG. 6). Here, the software configuration is described as a module divided for each function executed by the CPU 301. However, the software configuration is configured as an iris authentication program P30 or OSP1 of an integrated algorithm even if the function is not separable as a module. Also good.

  The iris authentication program P30 mainly includes an iris code creation module P31, a registered code comparison module P32, and a determination module P33.

  The iris code creation module P31 is a program incorporating a step of creating an iris code according to the iris pattern. The CPU 304 (see FIG. 6) recognizes the iris image data transferred from the iris photographing apparatus 200, extracts the iris pattern, and creates an iris code based on the determined standard. The iris creation module P31 functions as an iris code creation unit when the CPU 301 sequentially reads from the storage unit 304 and executes it, as shown in FIG.

  The registered code comparison module P32 is a program incorporating a step of comparing the iris code created this time by the iris code creating means with the iris code registered in the iris code DBM1. The registration code comparison module P32 functions as a registration code comparison unit when the CPU 301 sequentially reads from the storage unit 304 and executes it as shown in FIG.

  The determination module P33 determines whether the comparison result by the registered code comparison means matches the user authentication OK, and if the comparison result does not match, the user authentication NG is determined, and the result is displayed and transmitted to the iris photographing apparatus 200. This is a program incorporating a step to be executed. The determination module P33 functions as a personal information determination unit when the CPU 301 sequentially reads from the storage unit 304 and executes it, as shown in FIG.

  The iris code database (DB) M1 is a database in which an authentication target's iris code is created and registered in advance, and is stored in the storage unit 304 for reading by the CPU 301 shown in FIG. Functions as a storage unit.

  On the other hand, the operating system (OS) P1 may be a general-purpose OS such as Linux or Windows made by Microsoft Corporation, or may be a dedicated OS. In particular, the OSP1 only needs to incorporate the display control module P2 and the communication control module P3.

Hereinafter, the operation of the iris authentication system according to the first embodiment having the above-described configuration will be described with reference to the drawings. FIG. 8 is a flowchart for explaining processing of the iris imaging apparatus according to the first embodiment of the present invention.
The CPU 207 clears the wide-angle shooting count n to 0 (step SA1) and continues monitoring until the proximity sensor 205 is turned on (step SA2, N). When the recognition target person X stands in the vicinity of the iris photographing apparatus 200, the proximity sensor 205 is turned on, the CPU 207 senses the on (step SA2, Y), turns on the camera 203 (step SA3), and wide angle. Shooting is started (step SA4).

  At this time, the CPU 207 turns on the display unit 206 to notify the recognition target person X that the iris is being photographed. In addition, the CPU 207 may cause the recognition target person X to display an operation instruction on the display unit 207, or may perform guidance by voice using a voice output unit (not shown). For example, as such an instruction, there is a phrase such as “Please turn on the iris input adapter 100 and turn on the light”.

  Then, when the recognition target person X puts the iris input adapter 100 on the eyes, looks into the eyes from the peephole 103, presses the button 102, and turns on the light source unit 101 and the illumination unit 138, The CPU 207 performs wide-angle shooting.

  The CPU 207 performs a ring light extraction operation on the image data obtained by wide-angle imaging (step SA5). If there is no ring light, the process proceeds to step SA7, and if there is ring light, the process proceeds to step SA12. If there is no ring light, the CPU 207 checks again whether or not the proximity sensor 205 is turned on. If it is turned on, the CPU 207 checks the number of wide-angle shootings n, so that it is greater than one. Controls the zoom lens 202 to enlarge the wide angle (step SA9), increments the wide-angle shooting count n by 1, and returns the process to step SA4 (step SA10).

  In step SA8, when the number of wide-angle shootings n is 0, the CPU 207 turns off the camera 203 (steps SA7, N, step SA11), returns the process to step SA1 assuming that the iris image cannot be extracted, Or waiting for the person X to be recognized to arrive or start wide-angle imaging again. At this time, the ring light may not exist because the recognition target person X may not be lighting the iris input adapter 100 or not standing at an appropriate position when performing wide-angle shooting. These reasons are preferably displayed on the display unit 205 as instructions.

  In step SA7, the CPU 207 turns off the camera 203 if not turned on (steps SA, N, and step SA11), and performs the processing assuming that the recognition target person X has left before performing wide-angle shooting. Returning to step SA1, the next authentication target person X is awaited.

  In step SA6, if there is ring light, the CPU 207 calculates the size and position of the ring light (steps SA6, Y, step SA12). Then, the CPU 207 calculates the zoom ratio of the zoom lens 202 from the calculation results of the size and position, controls the zoom lens 202 and sets so that the iris peripheral portion X2 can be photographed (step SA13), and pan / tilt The angle 204 is calculated and the pan / tilt 204 angle is controlled so that the iris peripheral portion X2 can be photographed (step SA14). The zoom ratio and angle reference may be calculated according to the reference distance at the installation location and stored in the storage unit 209.

  Next, the CPU 207 operates the camera 203 to adjust the focal point and photograph the iris peripheral part X2 (step SA15, step SA16). The CPU 207 performs an iris extraction process from the obtained enlarged photographed image (step SA17). A specific example of this iris extraction process will be described later. If there is no iris pattern, the CPU 207 returns the process to step SA4, and if there is an iris pattern, moves the process to step SA19 (step SA18).

  The CPU 207 registers an iris image having an iris pattern, transmits the iris image to the iris recognition device 300 (step SA19), turns off the display of the display unit 206 (step SA20), and recognizes that the iris photographing has ended. The person X is notified. Then, when the authentication result is transmitted from the iris recognition device 300, the CPU 207 displays the authentication result on the display unit 206 and ends the process (step SA21). At this time, the lighting color of the display unit 206 may be changed according to the authentication result. For example, in the case of authentication OK, the light may be lit in blue, and in the case of authentication NG, the light may be lit in red.

FIG. 9 is a flowchart for explaining processing of the iris recognition apparatus according to the first embodiment of the present invention.
In the iris recognition apparatus 300, when the CPU 301 receives the iris image from the iris photographing apparatus 200, the iris image is registered as an image to be recognized (step SB1), an iris code is created (step SB2), and the created iris is created. The code is compared with the iris code registered in the iris code DBM1 (step SB2).

  If the iris codes match (step SB4, Y), the CPU 301 authenticates as a registrant (step SB5), and the authentication result indicating that the authentication is OK and the display unit 206 of the iris photographing apparatus 200 are blue. The instruction to turn on (step SB6) is transferred to the iris photographing apparatus 200, and the process is terminated.

  On the other hand, if the iris codes do not match (steps SB4 and N), the CPU 301 authenticates that the user is not a registered person (step SB7), and displays the authentication result indicating authentication NG and the display unit 206 of the iris photographing apparatus 200 in red. The instruction to turn on (step SB8) is transferred to the iris photographing apparatus 200, and the process ends.

  Next, the concept of extracting an iris peripheral part from a wide-angle photographed image by the iris photographing apparatus of the present invention will be described. FIG. 10 is a diagram for explaining the concept. Here, the region R is the obtained wide-angle captured image. The horizontal axis is the x direction, the vertical axis is the y direction, the luminance change at x1 is shown on the right side (x1-x1 image), and the luminance change at y1 is shown on the lower side in the figure. (Y1-y1 image).

  In such a wide-angle captured image shown in the region R, the black eye X4 and the pupil X5 in the black eye X4 can be distinguished in the ring light image 101 ′. However, it is not possible to determine the iris. Therefore, first, the position of the ring light image 101 ′ is obtained, and the size and position of the ring light are calculated in order to perform enlargement shooting with reference to the ring light image 101 ′.

  That is, the CPU 207 analyzes the positions at which the luminance value S is equal to or higher than the D value and the C value in the luminance curves 26 and 27 shown in the x1-x1 image and the y1-y1 image of the wide-angle captured image (ring light extraction). ), An image showing ring light is obtained at eight points a, b, c, d, e, f, g and h, respectively. Then, the CPU 207 calculates the size when the light source unit 101 is photographed based on these positions and the focal length of the zoom lens 202 during wide-angle photographing (ring light size / position calculation). Further, the CPU 207 sets the zoom ratio of the zoom lens 202 based on the ring light size (zoom ratio setting). Further, the CPU 207 obtains the center coordinates of the ring light from the eight points a, b, c, d, e, f, g, and h, and adjusts the angle of the pan / tilt table 204 when the iris is magnified ( (A-axis angle, B-axis angle) are calculated (pan / tilt setting).

  When the predetermined value is obtained as described above, the CPU 207 causes the camera 203 to magnify and photograph the iris of the person X to be recognized (iris photographing). At this time, since there is a deviation in the depth direction between the iris input adapter 100 and the actual iris position, focus adjustment is performed when an iris image is captured (focus adjustment).

  Next, the concept of extracting an iris image from an enlarged photographed image by the iris photographing apparatus of the present invention will be described. FIG. 11 is a diagram for explaining the concept. Here, the region S is the obtained enlarged photographed image. Similarly to the case of FIG. 10, the horizontal axis is the x direction, the vertical axis is the y direction, the luminance change at x1 is shown on the right side (x1-x1 image), and the luminance change at y1 is shown. Is shown on the lower side in the figure (y1-y1 image).

  In the enlarged image shown in such a region S, the white light X7, the black eye X4, and the pupil X5 and iris (iris) X6 in the black eye X4 can be distinguished in the ring light image 101 ′. . Therefore, the CPU 207 can specify the iris pattern. Note that the iris pattern can be specified by showing the changing portions of the luminance curves 28 and 29 based on the reflection characteristics of the eyes (iris extraction processing). Here, in the case where there is a difference in luminance for each component part of the eyes as in the luminance curves 28 and 29, the area of the black eye part 23 where the iris part is present can be determined, and an iris image can be accurately captured. (Iris image registration).

  In the luminance curves 28 and 29, (1), (4), (5), and (8) indicate black eye portions, and (2), (3), (6), and (7) indicate pupil portions. That is, the area between the black eye part and the pupil part is an area where the iris image exists, and the iris code may be generated by extracting the image data between them.

  On the other hand, as described above, after the iris image is captured and registered by the camera 203, the CPU 207 sends the iris image to the iris recognition device 300, and creates an iris code from the iris image by predetermined image processing (iris code). Create) and compare the registered iris codes for matching codes (registered code comparison).

  In the iris authentication system according to the first embodiment of the present invention described above, the iris is illuminated by using the iris input adapter and used as a feature pattern for specifying the periphery of the iris, so that illumination is performed as in the conventional case. Since no equipment or multiple cameras are required, it is possible to provide a smaller and cheaper system than conventional ones, and since no advanced processing algorithm is required to synchronize multiple cameras. Iris can be easily photographed at high speed and high accuracy.

  Moreover, since the iris input adapter is illuminated near the eyes, it can prevent reflection of glasses. In addition, the iris input adapter of the present invention is convenient for carrying because it has a card shape. In addition, the iris input adapter does not have a program to create an iris code, so it does not affect the quality of the iris authentication system even if it is carried, and the iris code creation is the core of the iris recognition system. The program will not be tampered with. Furthermore, the operability that you only need to look into the camera with the eyes you want to input from the hole of the iris input adapter can be expected to give a great sense of security to the human interface that inputs the iris to the camera.

(Second Embodiment)
The second embodiment is greatly different from the first embodiment described above in that the principal information is registered in the iris input adapter and authentication is performed using the principal information. In the following, differences will be mainly described, components having the same function are denoted by the same reference numerals, and description thereof will be omitted.

  FIG. 12 is a schematic block diagram illustrating a hardware configuration of the iris input adapter according to the second embodiment of this invention. The iris input adapter 500 detects the pressed state of the button 102 and controls the overall processing of the CPU 540, an antenna 539 for communicating with an adapter communication unit provided in the iris photographing apparatus, and the antenna 539. A communication unit 537 for controlling transmission / reception via a button, a button signal detection program P50 incorporating a step for detecting a pressed state of the button 102, an access control program P60 for determining an access level according to an access code, and an access level. And a memory 533 for storing personal information M20 of a person who has the iris input adapter 500 properly.

  Note that the access control program is executed only when the CPU 540 recognizes that the button 102 has been pressed. That is, it is assumed that the memory 533 cannot be accessed via the communication unit 537 unless the button 102 is pressed.

  The CPU 540 reads a button signal detection program from the memory 533 and detects the pressed state of the button 102. Further, as will be described later, the CPU 540 reads and transmits the personal information M20 or inputs an iris image based on an access code sent from an iris recognition device (not shown) via an iris photographing device (not shown). To do.

  The access code is, for example, access code 1 and access code 2, and the personal information includes various information such as an adapter number, name, date of birth, gender, employee number, and the like. The programs P50 and P60 and the access code are preferably stored in a read / write area, and the personal information is preferably stored in an area that can only be read. In other words, the program and access code are changed periodically so that they can be read / written to check the quality and safety of the data, and since the personal information is important data, it can only be read to prevent unauthorized alteration. .

In addition, the personal information may be classified into the following two types based on the importance of the information. It should be noted that the contents of the classification and information may be changed by system operation.
(1) When entering access code 1: Identity information 1 (adapter identification number, gender)
(2) When entering access code 2: Identity information 2 (name, date of birth, employee number)

  Further, the CPU 540 controls access from the communication unit 537 to the memory 533 by an access control program stored in the memory 533. For example, the CPU 540 compares the access code transmitted to the communication unit 537 with the access code registered in the memory 533 in advance, and permits access to the memory 533 only when they match.

  The communication unit 537 is a part that communicates with an external information terminal via the antenna 539, and mainly performs data communication between the memory 533 and the external information terminal. For communication with an external information terminal, in addition to communication with the adapter communication unit installed in the iris photographing apparatus, for example, communication with a personal computer is performed to change each program. There is a case.

  FIGS. 13A and 13B are views for explaining an overview of the iris input adapter according to the second embodiment of the present invention, in which FIG. 13A is a plan view and FIG. 13B is a cross-sectional view taken along line XX. In FIG. 13, the same components as those of the iris input adapter 100 described in FIG. The iris input adapter 500 includes an antenna 539, a communication unit 537 connected to the antenna 539, and a memory 533 accessed via the communication unit 537.

    When the button 102 of the iris input adapter 500 is pressed by the person X to be recognized and the CPU 540 (see FIG. 12) detects the pressing, the CPU 540 enables the communication unit 537 via the antenna 539 and transmits to the memory 533. Allow access.

FIG. 14 is a schematic block diagram illustrating a hardware configuration of an iris imaging apparatus according to the second embodiment of the present invention. FIG. 14 is a diagram corresponding to FIG. 3, and the same components are denoted by the same reference numerals and description thereof is omitted.
Compared with the iris photographing apparatus 200 (see FIG. 3), the iris photographing apparatus 600 enables communication with the iris input adapter 500 (see FIG. 13) and the iris input adapter 500 (see FIG. 13). And an iris recognition apparatus 700 (see FIG. 15), which will be described later, is greatly different in that communication is bridged.

  The iris photographing apparatus 600 adjusts the focal length of the zoom lens 202, the photographing operation of the camera 203, the angle control of the pan / tilt base 204, the monitoring of the proximity sensor 205, the display of various notification information on the display unit 206, and the iris input. A CPU 207 that controls overall processing including communication control with the adapter 500 (see FIG. 13), and an interface (see FIG. 15) for connecting to the iris recognition device 700 (see FIG. 15) via the LAN 400 (see FIG. 1). I / F) 208 and a storage unit 209 for storing various programs such as an iris image photographing program P70 for photographing the iris of the present invention and various programs such as an operating system (OS) P1 and photographed image data. In preparation.

  In the second embodiment, the iris photographing apparatus 600 further includes an adapter communication unit 601 that controls communication with the iris input adapter 500 (see FIG. 13). The storage unit 209 further includes An adapter communication program for controlling communication with the iris input adapter 500 (see FIG. 13), and transmission / reception of the iris code between the iris input adapter 500 (see FIG. 13) and the iris recognition device 700 (see FIG. 15). Iris code communication program to be stored.

  As will be described later, the CPU 207 sequentially reads the (OS) P1 and the iris image photographing program P70 from the storage unit 209, and photographs the iris peripheral part X1 (see FIG. 2) of the recognition target person X (see FIG. 2). . When the CPU 207 monitors the proximity sensor 205 and obtains a signal indicating that the recognition target person X (see FIG. 2) has come in front of the iris photographing apparatus 200, the CPU 207 controls the zoom lens 202 to recognize the recognition target person. The camera 203 performs wide-angle shooting that can shoot the entire face of X. In the following description, the iris photographing based on the iris image photographing program P70 is substantially the same as the case based on the iris image photographing program P20 (see FIG. 3), and thus the description thereof is omitted. The difference is that iris authentication is performed or not performed depending on the access code. This case division will be described in the iris code described later.

  Further, in the second embodiment, the CPU 207 sequentially reads adapter communication programs from the storage unit 209 and controls communication with the iris input adapter 500 (see FIG. 13). Further, the CPU 207 sequentially reads the iris code communication program from the storage unit 209 and controls the transmission / reception of the iris code with the iris recognition apparatus 700 (see FIG. 15).

  In the second embodiment, the CPU 207 communicates with the iris recognition apparatus 700 (see FIG. 15) via the I / F 208, and the access code sent from the iris recognition apparatus 700 is converted to the adapter communication unit 601. To the iris input adapter 500 (see FIG. 13). Accordingly, the iris input adapter 500 (see FIG. 13) permits access to the memory 533 (see FIG. 12) based on the access code, and transmits the identity information to the iris photographing apparatus 600. In this case, the CPU 207 causes the identity information received via the adapter communication unit 601 to be transferred to the iris recognition apparatus 700 (see FIG. 15) via the I / F 208.

  FIG. 15 is a schematic block diagram illustrating the hardware configuration of the iris recognition apparatus according to the second embodiment of this invention. FIG. 15 is a diagram corresponding to FIG. 6, and the same components are denoted by the same reference numerals and description thereof is omitted. In particular, in personal authentication, authentication by comparing iris codes is as described above, and thus detailed description thereof is omitted.

  The iris recognition apparatus 700 is an interface (I / I) that controls communication between the CPU 301 that controls the entire system and the iris photographing apparatuses 200, 200, 200,... (See FIG. 1) via the LAN 400 (see FIG. 1). F) 302, a display unit 303 for displaying various information, an operating system (OS) P1 executed by the CPU 301, an iris authentication program P30 for performing iris authentication based on iris image data, and an iris code referred to by the iris authentication program P30 It mainly includes a database (DB) M1, and a storage unit 304 that stores a personal information database (DB) M21 and an access code database (DB) M11.

  The CPU 301 in the second embodiment sequentially reads the OSP1, the iris authentication program P30, and the iris code database (DB) M1 from the storage unit 304, and further, the personal information database (DB) M21 and the access code database (DB). M11 is sequentially read from the storage unit 304, and authentication based on the personal information based on the access code is performed separately from the creation / comparison / determination of the iris code.

  For example, the CPU 301 accesses the memory 533 via the communication unit 537 of the iris input adapter 500 without the iris input at the iris input adapter 500 (see FIG. 13 (refer to FIG. 13 for the reference numeral 500)). And authenticating that the person using the iris input adapter 500 is the owner of the iris input adapter 500 and the person who is registered in the iris authentication system. Judgment was made by dividing access codes.

  That is, in the personal authentication in the second embodiment, even if it is impossible as a real problem to authenticate all with only the iris, it is possible to appropriately authenticate by changing the method of personal authentication according to the security level. become able to.

  FIG. 16 is a schematic block diagram illustrating the software configuration of the iris recognition apparatus according to the second embodiment of this invention. FIG. 16 is a diagram corresponding to FIG. 6, and the same components are denoted by the same reference numerals and description thereof is omitted. In particular, in personal authentication, authentication by comparing iris codes is as described above, and thus detailed description thereof is omitted.

  In the iris recognition apparatus 700, the CPU 301 (see FIG. 6) reads out and executes the iris authentication program P30, OSP1, iris code DBM1, personal information DBM1 and access code DBM11 in order from the storage unit 304 (see FIG. 6). . Here, the software configuration is described as a module divided for each function executed by the CPU 301. However, the software configuration is configured as an iris authentication program P30 or OSP1 of an integrated algorithm even if the function is not separable as a module. Also good. Note that the operating system (OS) P1 is as described above, as indicated by the same reference numerals, and a description thereof will be omitted.

  The iris authentication program P30 mainly includes an iris code creation module P31, a registered code comparison module P32, a determination module P33, a personal information comparison module P34, and an access code determination module P35.

  The iris code creation module P31 is a program incorporating a step of creating an iris code in accordance with the iris pattern, as described above. The registered code comparison module P32 is a program incorporating a step of comparing the iris code created this time by the iris code creating means with the iris code registered in the iris code DBM1, as described above. The iris code database (DB) M1 is a database in which the iris code of the person to be authenticated is created and registered in advance, as described above.

  The determination module P33 determines that the user ID is OK if the comparison result by the registered code comparison means matches, and the user authentication NG if the comparison result does not match, and displays the result and the iris photographing apparatus 600 (FIG. 14) and the comparison result between the principal information sent from the iris input adapter 500 (see FIG. 13) and the principal information stored in the principal information DBM21 match. Is a program that incorporates the steps of determining whether the personal authentication is OK, and in the case of a mismatch, the authentication is NG. The determination module P33 functions as a personal authentication determination unit when the CPU 301 sequentially reads out from the storage unit 304 and executes it, as shown in FIG.

  The principal information comparison module P34 is a program that incorporates a step of comparing the principal information sent from the iris input adapter 500 (see FIG. 13) with the principal information stored in the principal information DBM21. The personal information comparison module P34 functions as personal information determination means when the CPU 301 sequentially reads out from the storage unit 304 and executes it, as shown in FIG.

  The identity information database (DB) M21 is a database in which the identity information of the person to be authenticated is registered in advance. The identity information database (DB) M21 is stored in the storage unit 304 to be read by the CPU 301 shown in FIG. Function.

  The access code database (DB) M11 is a database in which the access codes as described above are registered in advance. The access code is changed according to the setting of the recognition target person and the security level, and the iris input adapter 500 (see FIG. 13). ), And is stored in the storage unit 304 for reading by the CPU 301 shown in FIG. 15, and functions as an access code database storage unit.

Hereinafter, the operation of the iris authentication system of the second embodiment having the above-described configuration will be described with reference to the drawings. FIG. 17 is a flowchart for explaining the operation of the iris input adapter according to the second embodiment of the present invention.
When the CPU 540 obtains the ON signal of the button 102 (step SC1), the light source unit 101 and the illumination unit 138 connected by wiring (not shown) are turned on, as described in the first embodiment. When this lighting is recognized by a wiring (not shown) (step C2), a communication waiting state from the iris photographing apparatus 600 is entered (step SC3).

  Then, the CPU 540 determines the presence / absence of communication, and if there is no communication (step SC4, N), determines the presence / absence of the ON signal of the button 102, and if the ON signal of the button 102 is obtained. The process returns to step SC2 (step SC5, Y), and if the ON signal of the button 102 is not obtained, the process is terminated (step SC5, N).

  On the other hand, CPU 540 determines the presence / absence of communication, and if there is communication (step SC4, Y), receives communication data (step SC6), and if the communication data includes an access code, memory The access code M10 is read from 533 and compared with the received access code (step SC7). Then, according to the received access code, for example, in the case of access code 1, CPU 540 moves the process to step SC10, and in the case of access code 2, the process moves to step SC9. On the other hand, if the access code is not any, CPU 540 moves the process to step SC11.

  In the case of the access code 2, the CPU 540 reads the principal information 2 from the principal information M20 in the memory 533, transmits it to the iris photographing apparatus 600 (step SC9), and moves the process to step SC11. The identity information 2 is transferred to the iris recognition device 700 via the iris photographing device 600.

  In the case of the access code 1, the CPU 540 reads the principal information 1 from the principal information M20 in the memory 533, transmits it to the iris photographing apparatus 600 (step SC9), and moves the process to step SC11. The identity information 1 is transferred to the iris recognition device 700 via the iris photographing device 600.

  In step SC11, when the processing according to the access code is completed (steps SC8 to SC10), the CPU 540 determines whether or not the button 102 is on, and if the button 102 is on, the processing is performed. Is returned to step SC2 (step SC11, Y), and the processing is terminated if the ON signal of the button 102 is not obtained (step SC11, N).

  FIG. 18 is a flowchart for explaining a part of the processing of the iris photographing apparatus according to the second embodiment of the present invention. The flowchart shown in FIG. 18 is based on the flowchart described in FIG. Step SD1 in FIG. 18 is the same as step SA20 in FIG. That is, FIG. 18 shows different processing steps after step SA19 in FIG.

  In step SA19, the CPU 207 registers an iris image having an iris pattern, transmits it to the iris recognition apparatus 300, and turns off the display on the display unit 206 (step SA20 = step SD1). Bridge communication for transmission / reception of the iris code M10 with the recognition apparatus 700 is performed (step SD2).

  When the CPU 207 receives the personal information M20 corresponding to the iris code M10 from the iris input adapter 500, the CPU 207 transfers the personal information M20 to the iris recognition device 700 (step SD3). Next, when the authentication result is transmitted from the iris recognition apparatus 700, the CPU 207 displays the authentication result on the display unit 206 and ends the process (step SD4). Similarly, for example, in the case of authentication OK, the light is turned on in blue, and in the case of authentication NG, the light is turned on in red. Further, the access code used for authentication may be displayed to notify the person to be recognized.

FIG. 19 is a flowchart illustrating processing of the iris recognition apparatus according to the second embodiment of this invention.
In the iris recognition apparatus 700, when the CPU 301 receives the iris image from the iris photographing apparatus 200, the CPU 301 registers the iris image as an image to be recognized (step SB1), determines whether or not an iris code can be created, and iris. If the code cannot be created, it is set to access code 1 (step SE2, N, step SE3), and the process proceeds to SE6. If the iris code can be created, it is set to access code 2 (step SE2, Y, step SE4), an iris code is created (step SB2).

  Here, the case where an iris code cannot be created refers to an embodiment of a security level that does not require input of an iris image, and therefore an image that cannot be created from an image photographed using the iris input adapter 500. input. Also, at the security level that requires input of an iris image, if the iris input adapter 500 is low in illuminance and a clear image cannot be taken or there is a transfer error, etc., and if authentication cannot be performed, the image is taken again. Try to get a clear image.

  The CPU 301 sends a request for personal information corresponding to the set access code to the iris photographing apparatus 600 to be transferred to the iris input adapter 500, and the principal information transferred from the iris input adapter 500 via the iris photographing apparatus 600 is transmitted. When received (step SE6), the registered principal information is compared with the received principal information, and when the iris code has been created, the created iris code and the iris code registered in the iris code DBM1 are compared. Are compared (step SE8). Here, the registration data in step SE7 collectively represents the above-described “registered personal information” and “iris code registered in the iris DBM1”.

  When the iris code has been created, if both the iris code and the personal information 2 match (step SE8, Y), the CPU 301 authenticates as a registrant (step SE9), indicating that the authentication is OK. And the command to turn on the display unit 206 of the iris photographing apparatus 600 in blue (step SE10) is transferred to the iris photographing apparatus 600, and the process ends.

  Further, when the iris code has been created, the CPU 301 authenticates that the user is not a registrant (step SE11) if both the iris code and the personal information 2 do not match (step SE8). The authentication result indicating NG and the instruction to turn on the display unit 206 of the iris photographing apparatus 600 in red (step SE12) are transferred to the iris photographing apparatus 600, and the process ends. However, according to the operational rules, if only the identity information 2 does not match, the CPU 301 uses the iris input adapter 500, but the person who is using the iris input adapter 500 is not a legitimate authentication target, but the iris code matches the registration code. Therefore, the personal authentication can be OK. However, if the iris code does not match the registration code, the identity authentication NG is made even if the identity information 2 matches.

  On the other hand, when the iris code has not been created, the CPU 301 compares only the principal information 1 and if the principal information 1 matches (step SE8, Y), authenticates as a registrant (step SE9). The authentication result indicating that the authentication is OK, a command for lighting the display unit 206 of the iris photographing apparatus 600 in blue (step SE10) are transferred to the iris photographing apparatus 600, and the process is terminated.

  Further, when the iris code is not created, the CPU 301 compares only the principal information 1 having higher security than the principal information 1, and if the principal information 1 does not match (step SE8, N), the registrant Otherwise, the authentication result indicating authentication NG, the command to turn on the display unit 206 of the iris photographing apparatus 600 in red, and the instruction (step SE12) are transferred to the iris photographing apparatus 600 and the process is terminated. To do.

Further, regarding the comparison of the registration data in step SE7, the same effect can be obtained by registering the iris code and the personal information as registration data in advance in the following relationship.
That means
(Principal data 1) Iris code: None, Principal information: Principal information 1
(Principal data 2) Iris code: Yes, Principal information: Principal information 2
Then, when the principal data 1 matches the registered data, it is confirmed that the iris input adapter 500 is registered with the “adapter identification number” in the principal information 1. Therefore, there is a high possibility that the person who has the iris input adapter 500 is the person who is registered as the owner. Moreover, since the personal information 1 has a gender, the person having the iris input adapter 500 can be determined from the gender through a monitoring camera or the like (not shown). User authentication can be performed at a security level of. Therefore, it is suitable for authentication at a low security level.

  On the other hand, if the principal data 2 matches the registered data, the person who entered the iris using the iris input adapter 500 is the principal who is registered as the owner of the iris input adapter 500 and has previously recognized the iris. It is possible to double-check that the person who registered the iris code in the apparatus 700 is used. That is, the personal data 2 can perform very high security personal authentication.

  However, if there is no matching data, the identity authentication cannot be performed as the owner of the iris input adapter 1, or the person who entered the iris using the iris input adapter 500 is not the person who owns the iris input adapter 500. It can be determined that the person who has previously registered the iris code in the iris recognition apparatus 700 is not the person himself / herself. Therefore, it is suitable for authentication at a high security level.

  In the iris authentication system according to the second embodiment of the present invention described above, in accordance with the security level of the information terminal to be used, from the personal authentication using only the personal data 1 without inputting the iris, the iris data is input by entering the iris data 2. It is possible to respond widely to the level of authenticating the person.

(Third embodiment)
FIG. 20 is a schematic block diagram illustrating the hardware configuration of the iris recognition apparatus according to the third embodiment of the present invention. The iris recognition apparatus 800 is an apparatus having both the iris photographing function of the iris photographing apparatus 200 (see FIG. 3) and the iris recognition function of the iris recognition apparatus 300 (see FIG. 6).

  Therefore, the iris recognition apparatus 200 adjusts the focal length of the zoom lens 202, the photographing operation of the camera 203, the angle control of the pan / tilt table 204, the monitoring of the proximity sensor 205, and the display of various notification information on the display unit 206. A CPU 207 that controls the entire processing including the interface, an interface (I / F) 208 for connecting to the LAN 400 (see FIG. 1), an iris image photographing program P20 for photographing the iris of the present invention, and an operating system (OS). It mainly includes a storage unit 209 that stores various programs such as P1 and an iris authentication program P30 and various data such as captured image data.

  The basic components are the same as those of the iris photographing apparatus 200 shown in FIG. 3, but the CPU, the storage unit, the I / F, and the display unit are the same in the iris recognition apparatus 300 shown in FIG. You may attach | subject a code | symbol. That is, in the former case, the iris photographing apparatus 200 is provided with an iris recognition function, and in the latter case, the iris recognition apparatus 300 is provided with an iris photographing apparatus, and both are the same. Moreover, each program is the same as each program mentioned above, attaches | subjects the same code | symbol and abbreviate | omits description.

  In addition, in the iris authentication system of each embodiment described above, the iris is used for the personal authentication. However, the image to be compared / determined is not limited to the iris, and it is also possible to register the specific image by registering a specific image. It is possible to perform authentication. In other words, any one that can be input via the iris input adapter may be used. In addition, since the registered image can be known only by the registered person, if the registered image is not known to others, a high security check can be performed as in the case of the iris image. It is.

  For example, FIG. 21 shows an operation when a personal photograph printed on an identification card such as an employee ID card is used as a registered image. Since the photo printed on this type of ID card is for identifying an individual, it is generally impossible for others to obtain the same photo, so registration of identity verification Can be used as an image.

It is a network block diagram explaining an example of the iris authentication system of this invention. It is a figure explaining the iris photography operation of a 1st embodiment of the present invention. It is a schematic block diagram explaining the hardware constitutions of the iris imaging device of the 1st Embodiment of this invention. It is a schematic block diagram explaining the software structure of the iris imaging device of the 1st Embodiment of this invention. It is a figure explaining the external appearance of the iris input adapter of the 1st Embodiment of this invention, (A) is a top view, (B) is XX sectional drawing. It is a schematic block diagram explaining the hardware constitutions of the iris recognition apparatus of the 1st Embodiment of this invention. It is a schematic block diagram explaining the software structure of the iris recognition apparatus of the 1st Embodiment of this invention. It is a flowchart explaining the process of the iris imaging device of the 1st Embodiment of this invention. It is a flowchart explaining the process of the iris recognition apparatus of the 1st Embodiment of this invention. It is a figure explaining the concept which extracts an iris peripheral part from the wide angle picked-up image by the iris imaging device of this invention. It is a figure explaining the concept which extracts an iris image from the expansion photography image by the iris photography device of the present invention. It is a schematic block diagram which shows the hardware constitutions of the iris input adapter of the 2nd Embodiment of this invention. It is a figure explaining the external appearance of the iris input adapter of the 2nd Embodiment of this invention, (A) is a top view, (B) is XX sectional drawing. It is a schematic block diagram explaining the hardware constitutions of the iris imaging device of the 2nd Embodiment of this invention. It is a schematic block diagram explaining the hardware constitutions of the iris recognition apparatus of the 2nd Embodiment of this invention. It is a schematic block diagram explaining the software structure of the iris recognition apparatus of the 2nd Embodiment of this invention. It is a flowchart explaining operation | movement of the iris input adapter of the 2nd Embodiment of this invention. It is a flowchart explaining a part of process of the iris imaging device of the 2nd Embodiment of this invention. It is a flowchart explaining the process of the iris recognition apparatus of the 2nd Embodiment of this invention. It is a schematic block diagram explaining the hardware constitutions of the iris recognition apparatus of the 3rd Embodiment of this invention. It is a figure explaining the registration image photographing operation of the 3rd Embodiment of this invention. It is a figure explaining the conventional iris photography concept.

Explanation of symbols

1000 Iris authentication system 100 Iris input adapter 200 Iris imaging device 300 Iris recognition device 400 LAN

Claims (14)

An iris input adapter including a light source unit that is formed in a peephole that allows a person to be recognized to peek into and is appropriately arranged around the peephole, and an illumination unit that illuminates the iris region;
Wide-angle photographing means for photographing a recognition target person at a wide angle during lighting of the illumination unit and the light source unit of the iris input adapter;
Pattern extraction means for extracting a feature pattern of a portion where the light source unit is lit from image data captured by the wide-angle imaging means;
Iris position calculating means for calculating an iris position based on the feature pattern extracted by the pattern extracting means;
Magnifying photographing means for magnifying and photographing the iris by focusing on the iris position calculated by the iris position calculating means;
An iris code creating means for creating an iris code by encoding iris image data photographed by the magnified photographing means;
An iris code comparing means for calling an iris code registered in advance as the iris code of the person to be authenticated, and comparing the iris code created this time with the iris code created by the iris code creating means;
An iris recognition system comprising: a recognition target person determination unit that determines that the iris code is a legitimate recognition target person when the iris code is matched, and a false recognition target person when the iris code is not matched . The iris input adapter;
An iris photographing apparatus comprising the wide angle photographing means, the pattern extracting means, the iris position calculating means, and the enlarged photographing means;
An iris recognition device comprising the iris code creation means, the iris code comparison means and the recognition target person determination means,
2. The iris authentication system according to claim 1, wherein the iris photographing device and the iris recognition device are connected to each other via a network so as to communicate with each other. The iris input adapter;
The iris recognition apparatus includes the wide-angle photographing unit, the pattern extracting unit, the iris position calculating unit, the enlarged photographing unit, the iris code creating unit, the iris code comparing unit, and the recognition target person determining unit. The iris authentication system according to claim 1.   The iris authentication system according to claim 1, further comprising iris code registration means for registering the iris code created by the iris code creation means as an iris code of the person to be authenticated. The iris input adapter further includes a personal information storage unit that stores the personal information of the person to be recognized so that writing and erasing are prohibited and readable, and a communication unit that transmits the personal information stored in the personal information storage unit. And
In the iris recognition device, a personal information database storage unit storing a personal information database for registering personal information of a person to be recognized, and personal information transmitted from the iris input adapter and stored in the personal information database storage unit A personal information comparison unit that compares the personal information with the personal information, and a personal information determination unit that determines that the person to be authenticated is a legitimate recognition target if they match, and is determined by the recognition target person determination unit. 4. The iris authentication system according to claim 2, wherein the recognition target person is authenticated based on the result and the determination result of the identity information determination means. The iris input adapter is provided with an access code that divides the access status according to the type, and at least two types of personal information are stored in the personal information storage unit,
In the iris recognition device, an access code database storage unit storing an access code database for registering an access code for accessing the personal information stored in the personal information storage unit according to a predetermined authentication level; An access code determination means for determining an access code for determining the identity information requested according to a predetermined authentication level;
Corresponding to the access code, at least two types of personal information are stored in the personal information database storage unit, and the personal information comparing means is transferred from the iris input adapter according to the access code determined by the access code determining means. The personal information is compared with the personal information stored in the personal information database storage unit, and the personal information determination means determines whether the comparison result of the personal information comparison means matches or does not match based on the personal authentication. The iris authentication system according to claim 5.   In the personal information storage unit and the personal information database storage unit, the iris code is used as the access code, personal information is stored in correspondence with the iris code, and the iris code created by the iris code creating means The identity information is read from the iris input adapter according to the identity information, and the identity information determination means determines the identity information based on the iris code as the access code. Iris authentication system described in 1.   The access code is at least two kinds of codes depending on whether or not an iris image is input, and is determined when an iris image is not input from the iris input adapter to the principal information storage unit and the principal information database storage unit. 7. The iris authentication system according to claim 6, wherein personal information is stored. The iris authentication system according to claim 1, wherein the light source unit is arranged in a ring shape on a periphery of the peephole. The iris authentication system according to claim 1, wherein a light emitting element that emits light in a near infrared region is mounted on at least one of the light source unit and the illumination unit. Illumination of the iris input adapter and lighting of the light source unit including a light source unit that is appropriately arranged on the periphery of the peep hole and an illumination unit that illuminates the iris region. A wide-angle photographing means for photographing a recognition target person at a wide angle,
Pattern extraction means for extracting a feature pattern of a portion where the light source unit is lit from image data captured by the wide-angle imaging means;
Iris position calculating means for calculating an iris position based on the feature pattern extracted by the pattern extracting means;
Magnifying photographing means for magnifying and photographing the iris by focusing on the iris position calculated by the iris position calculating means;
The iris code created by encoding the iris image data photographed by the enlargement photographing means is compared with the iris code registered in advance as the authentication target's iris code. An iris photographing apparatus, comprising: an iris recognition apparatus that determines that a person is a recognition target and determines that the iris code is an unauthorized person when the iris codes do not match; and a communication unit that transfers the iris image data. Illumination of the iris input adapter and lighting of the light source unit including a light source unit that is appropriately arranged on the periphery of the peep hole and an illumination unit that illuminates the iris region. A wide-angle photographing means for photographing a recognition target person at a wide angle,
Pattern extraction means for extracting a feature pattern of a portion where the light source unit is lit from image data captured by the wide-angle imaging means;
Iris position calculating means for calculating an iris position based on the feature pattern extracted by the pattern extracting means;
Magnifying photographing means for magnifying and photographing the iris by focusing on the iris position calculated by the iris position calculating means;
An iris code creating means for creating an iris code by encoding iris image data photographed by the magnified photographing means;
An iris code comparing means for calling an iris code registered in advance as the iris code of the person to be authenticated, and comparing the iris code created this time with the iris code created by the iris code creating means;
An iris recognition apparatus comprising: a recognition target person determination unit that determines that the iris code is a regular recognition target person when the iris code matches, and that is an unauthorized recognition target person when the iris code does not match . The light source unit and the illumination unit of the iris input adapter, which includes a light source unit that forms a peep hole that allows the person to be recognized to peek into and that is appropriately arranged on the periphery of the peep hole, and an illumination unit that illuminates the iris region Is turned on, the person to be recognized is photographed at a wide angle, the feature pattern of the portion where the light source part is lit is extracted from the acquired image data, and is focused on the iris position calculated based on the feature pattern The iris image data is acquired by enlarging the image, the iris image data is encoded to create an iris code, the iris code registered in advance as the iris code of the person to be recognized is called, and the iris The code is compared with the called iris code, and if the iris code matches, it is determined that the person is a legitimate recognition target and the iris code is invalid. Iris authentication method characterized by determining an invalid recognized person in the case of 致. A recognition target input adapter including a light source unit that appropriately shapes the peep hole for peeping the recognition target and arranged at the periphery of the peep hole and a lighting unit that illuminates the recognition target;
Wide-angle photographing means for photographing a recognition target at a wide angle while the illumination unit and the light source unit of the recognition target input adapter are turned on;
Pattern extraction means for extracting a feature pattern of a portion where the light source unit is lit from image data captured by the wide-angle imaging means;
Recognition target position calculation means for calculating a recognition target position based on the feature pattern extracted by the pattern extraction means;
Magnifying photographing means for focusing on the recognition target position calculated by the recognition target position calculating means and magnifying the recognition target;
A recognition target code creating means for creating a recognition target code by encoding the image data of the recognition target photographed by the enlarged photographing means;
A recognition target code comparing means for calling a recognition target code registered in advance as a recognition target code of a recognition target, and comparing the recognition target code created this time with the recognition target code created by the recognition target code;
A registration target authentication system, comprising: a recognition target determination unit that determines that a recognition target code matches a legitimate recognition target and determines that a recognition target code does not match a fraudulent recognition target .

Images