JP2007233950A - Image authentication device, imaging device and image authentication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a convenient, structurally simple, inexpensive and accurate image authentication device, imaging device and image authentication system. <P>SOLUTION: A lens 12 is inserted in a selected part of the imaging area of a camera 11 having an object distance d1 to optically change the object distance to d2 only in the part of the imaging area. An image captured by the camera 11 thus has an area of the object distance d1 and an area of the object distance d2 mixed, and the area of the object distance d1 is used for surrounding monitoring and face image matching while the area of the object distance d2 is used for fingerprint matching. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image authentication apparatus, an imaging apparatus, and an image authentication system that perform personal authentication by comparing captured images, and in particular, an image authentication apparatus that performs biometric authentication by acquiring a plurality of biometric information with a single camera, The present invention relates to a photographing apparatus and an image authentication system.

  In recent years, biometric authentication using biometric information peculiar to individuals such as a face and a fingerprint has been adopted as a method of personal authentication. In such biometric authentication, in order to improve the authentication accuracy, there are cases where determination is made in combination using a plurality of pieces of biological information as disclosed in Patent Document 1.

  For example, Patent Document 2 discloses a personal authentication technique using a voice and a fingerprint, and Patent Documents 3 to 5 disclose a personal authentication technique using a fingerprint and a face image.

  Here, since the fingerprint can also be obtained by an image, if the fingerprint image and the face image are taken with a single camera, the number of necessary cameras and sensors can be reduced and the cost can be reduced.

  Therefore, for example, in Patent Document 6, a rotatable prism is installed in front of the camera, and the user can select whether to capture a face image or a fingerprint image by changing the rotation state of the prism. This technology is disclosed.

JP 2003-44858 A JP 2000-259828 A JP 2004-62846 A JP 2005-92611 A JP 2004-355088 A JP-A-11-306323

  However, in Patent Document 6 described above, there is a problem in that the user himself / herself needs to perform an operation in order to switch between photographing a face image and a fingerprint image, and the convenience for the user is reduced.

  Further, in the conventional technique, the distance from the camera to the object to be photographed is different between the case of photographing a face image and the case of photographing a fingerprint image, and thus it is necessary to provide a drive mechanism for changing the object distance on the camera side. For this reason, there is a problem that the structure becomes complicated, and a problem that the cost increases.

  The present invention has been made to solve the above-described problems of the prior art, and provides an image authentication apparatus, a photographing apparatus, and an image authentication system that are highly convenient, simple in configuration, low in cost, and highly accurate. The purpose is to do.

  In order to solve the above-described problems and achieve the object, an image authentication apparatus according to the invention of claim 1 includes an imaging unit having a first object distance and an object distance for a part of an imaging range of the imaging unit. An object distance changing means for changing to a second object distance different from the first object distance and an authenticating means for performing personal authentication based on a result of photographing by the photographing means are provided.

  An image recognition apparatus according to a second aspect of the present invention is the image recognition apparatus according to the first aspect, wherein the object distance changing means is configured to make the second object distance smaller than the first object distance. It is a lens.

  An image recognition apparatus according to a third aspect of the present invention is the image recognition apparatus according to the first or second aspect, wherein the photographing means is a wide-angle camera.

  According to a fourth aspect of the present invention, there is provided the image recognition apparatus according to the first, second, or third aspect, wherein the authentication unit performs fingerprint verification using a fingerprint image photographed at the second object distance. It is characterized by performing.

  According to a fifth aspect of the present invention, in the image recognition device according to the fourth aspect, the finger guide member installed in the vicinity of the second object distance and the finger pressed against the finger guide member are contacted. And a photographing means protecting member provided between the finger guide member and the photographing means without further being provided.

  An image recognition apparatus according to a sixth aspect of the present invention is the image recognition apparatus according to any one of the first to fifth aspects, wherein the authentication means uses a face image taken at the first object distance. It is characterized by performing face image matching.

  According to a seventh aspect of the present invention, there is provided an image recognition apparatus according to any one of the first to sixth aspects, wherein the surroundings are monitored using a person image photographed at the first object distance. The apparatus further includes means.

  An image recognition apparatus according to an eighth aspect of the present invention is the image recognition apparatus according to any one of the first to seventh aspects, wherein the authentication unit uses the image photographed at the first object distance. If the result of the above is insufficient for personal authentication, collation is performed using an image taken at the second object distance.

  An image recognition apparatus according to a ninth aspect of the present invention is the image recognition apparatus according to the eighth aspect, wherein identification of an individual is possible as a result of collation using an image photographed at the second object distance. The image processing apparatus further includes registration means for registering an image photographed at the first object distance as a collation image that can be used in the subsequent collation.

  According to a tenth aspect of the present invention, there is provided a photographing device having a first object distance, and a second object having an object distance different from the first object distance for a part of a photographing range of the imaging means. An object distance changing means for changing to a distance is provided.

  According to an eleventh aspect of the present invention, there is provided an image recognition system including: a photographing unit having a first object distance; and a second object distance that is different from the first object distance for a part of a photographing range of the imaging unit. An imaging apparatus having an object distance changing means for changing to an object distance, and an authentication apparatus for performing personal authentication based on a result of imaging by the imaging apparatus.

  According to the first aspect of the present invention, the image recognition apparatus performs a personal authentication by acquiring a plurality of images having different object distances without an autofocus function by changing the object distance for a part of the photographing range of the imaging means. There is an effect that a low-cost image authentication apparatus can be obtained with a simple configuration.

  Further, according to the invention of claim 2, the image recognition device is arranged for shortening the object distance by placing a lens in a part of the photographing range of the image pickup means, so that the image for monitoring or face image collation can be used for fingerprint collation. There is an effect that it is possible to obtain a low-cost image authentication apparatus with a simple configuration that acquires images.

  Further, according to the invention of claim 3, the image recognition apparatus is arranged for a part of the photographing range of the wide-angle camera to shorten the object distance, thereby shortening the object distance, and the image for monitoring or face image matching and fingerprint matching. There is an effect that it is possible to obtain a low-cost image authentication apparatus with a simple configuration that acquires images.

  According to the invention of claim 4, the image recognition apparatus obtains an image for fingerprint collation by placing the lens in a part of the photographing range of the photographing means and shortening the object distance. The image authentication apparatus can be obtained.

  According to the invention of claim 5, the image recognition apparatus installs a finger guide at a short object distance by placing a lens in a part of the photographing range of the photographing means, and protects between the finger guide and the photographing means. Since the member is installed, there is an effect that a low-cost image authentication apparatus can be obtained with a simple configuration.

  According to the invention of claim 6, since the image recognition apparatus acquires a plurality of images having different object distances with a simple configuration and performs personal authentication by combining a plurality of collations including face image collation, a high-precision There is an effect that an image authentication device can be obtained.

  According to the seventh aspect of the invention, the image recognition apparatus can obtain a highly convenient image authentication apparatus that acquires an image for peripheral monitoring and an image for personal authentication with a simple configuration. Play.

  According to the invention of claim 8, the image recognition device combines a plurality of image verifications, and when the result of verification using an image photographed at the first object distance is insufficient for personal authentication, Since the verification is performed using the images taken at the object distance of 2, the image authentication apparatus with improved convenience and recognition accuracy can be obtained.

  According to the invention of claim 9, the image recognition apparatus combines a plurality of image verifications, and when the result of the first image verification is insufficient and an individual can be specified by the second image verification. Since the image used for the first image collation is registered as a collation image that can be used in the subsequent collation, it is possible to obtain an image authentication apparatus with further improved authentication accuracy and convenience.

  According to the invention of claim 10, the imaging apparatus can obtain an imaging apparatus that acquires a plurality of images having different object distances without an autofocus function by changing the object distance for a part of the imaging range. There is an effect.

  According to the invention of claim 11, the image recognition system acquires a plurality of images with different object distances without changing the object distance for a part of the photographing range of the image pickup means, and performs personal authentication. The low cost image authentication system can be obtained with a simple configuration.

  Exemplary embodiments of an image authentication device, a photographing device, and an image authentication system according to the present invention will be described below with reference to the accompanying drawings.

  First, the concept of the present invention will be described. FIG. 1 is a conceptual diagram illustrating the concept of the present invention. When the camera 11 shown in the figure is used alone, a subject farther than 500 mm is in focus (object distance d1 ≧ 500 mm). Here, in the present invention, the distance between the camera and the subject when the subject is in focus is referred to as an object distance.

  When the lens 12 is selectively installed for a part of the shooting range (view angle) of the camera 11, the object distance is changed by the lens 12 only in a part of the shooting range to become the object distance d2. The object distance d2 is preferably about 30 mm to 50 mm, for example.

  For this reason, the image captured by the camera 11 has a region where the object distance d2 is in focus and a region where the object distance d1 is suitable for the object distance.

  Of the captured images, the region of the object distance d1 is used for surrounding monitoring and face image collation. The area of the object distance d2 is used for fingerprint collation.

  Here, the camera 11 is preferably a wide-angle camera (for example, a camera with an angle of view of 180 degrees). By employing a wide-angle camera, it is possible to shoot images for face image collation even for persons of different heights, and the range that can be monitored is widened. Even if the object distance of a part of the area is changed to d2 by the lens 12, the area of the object distance d1 can be left with a sufficient size.

  In this way, by changing the object distance optically for a part of the shooting range of the camera 11 by the lens 12, the image for fingerprint collation can be obtained without providing the camera 11 with an autofocus function for changing the object distance. It is possible to capture the face image comparison image and the peripheral monitoring image with a single camera.

  Next, a functional configuration of the image authentication system will be described. FIG. 2 is a schematic configuration diagram showing a schematic configuration of the image authentication system in the present embodiment. In the image authentication system shown in the figure, an image taken by the camera unit 10 is used, and the authentication device 20 performs personal authentication.

  The camera unit 10 includes a control board 13, an LED 14, a switch 15, and an illuminance sensor 16 in addition to the camera 11 and the lens 12. When the switch 15 is operated, the control board 13 requests the authentication device 20 to execute fingerprint authentication.

  The illuminance sensor 16 is a sensor that measures ambient brightness. The control board 13 acquires the measurement result of the illuminance sensor at the time of executing fingerprint photography (when the switch 15 is operated), and turns on the LED 14 to illuminate the fingerprint as necessary to ensure an appropriate amount of light. .

  The camera 11 performs shooting under the control of parameter settings such as shooting timing, shooting interval, brightness, and angle of view from the authentication device 20, and outputs the shooting result to the authentication device 20.

  The authentication device 20 includes a main control unit 21, an image processing unit 25, a registered image database 26, a face image collation processing unit 27, a fingerprint collation processing unit 28, a display output processing unit 29, a voice output processing unit 3, and an authentication result. An output unit 31 is provided.

  The image processing unit 25 is a processing unit that performs image processing on an image captured by the camera 11. Specifically, in addition to edge enhancement and contrast adjustment, the imaged image area is separated and shaped.

  Region separation and shaping by the image processing unit 25 will be further described with reference to FIG. The entire image f0 shown in FIG. 3 is an image taken by the camera 11, and has an area A1 with an object distance d1 and an area A2 with an object distance d2 inside.

  The image processing unit 25 separates the region A1 and the region A2, shapes the shape thereof, and creates the image f2 from the region A1 and the image f2 from the region A2. Note that the image shown in the figure is an example when the area A1 is used for face image authentication, and a process corresponding to a person's face is further cut out from the area A1 to obtain an image f1. The image processing unit 25 may be provided on the camera unit 10 side.

  The main control unit 21 is a control unit that controls the authentication apparatus 20 as a whole, and includes a registration processing unit 22, an authentication processing unit 23, and a monitoring processing unit 24 therein.

  The monitoring processing unit 24 monitors surrounding persons using the image output from the image processing unit 25. When a person approaches the camera 11, authentication by the authentication processing unit 23 is started.

  The authentication processing unit 23 performs personal authentication by combining face image verification and fingerprint verification. Specifically, the face image matching processing unit 27 executes the actual face image matching process, and the fingerprint matching processing unit 28 executes the actual fingerprint matching process.

  The face image collation processing unit 27 compares the image f1 created by the image processing unit 25 with the user's face image registered in the registered image database 26 when the authentication processing unit 23 instructs the collation of the face image. The degree of coincidence is calculated and output to the authentication processing unit 23.

  Similarly, the fingerprint collation processing unit 28 compares the image f2 created by the image processing unit 25 with the user's fingerprint registered in the registered image database 26 when instructed by the authentication processing unit 23 to collate the fingerprint. And the determination result is output to the authentication processing unit 23.

  As shown in FIG. 4, the registered image database 26 stores the user ID, the user's name, face image data, and fingerprint image data in association with each other. In this way, by associating the face image data and the fingerprint image data, it is possible to perform personal authentication combining face image matching and fingerprint matching. The image corresponding to each user can be registered and updated by the registration processing unit 22.

  The display output processing unit 29 is a processing unit that performs display output under the control of the main control unit 21, and the audio output processing unit 30 is a processing unit that performs audio output under the control of the main control unit 21. An example of the display screen output by the display output processing unit 29 is shown in FIG.

  On the display screen 29a shown in the figure, an image taken by the camera 11, a face image cut out from the image, and a fingerprint image are displayed. In addition, a status display area for displaying the operation status of the camera unit 10 and the authentication device 20, a start button for accepting input instructions for starting and stopping authentication, a stop button, and a button for changing settings are displayed. Yes.

  The authentication result output unit 31 performs processing for outputting the authentication result by the authentication processing unit 23 to an external device. By outputting the authentication result, it is possible to execute, for example, door lock release or alarm output.

  Next, a physical configuration example of the camera unit 10 will be further described. In the configuration shown in FIG. 6, the camera 11 is covered with a protective cover 18 and a finger guide 17 is installed.

  The finger guide 17 is a member on which the user puts his / her finger when photographing a fingerprint, and is installed at a position where the surface of the finger pressed against the finger guide 17 becomes the object distance d2. The finger guide 17 has an opening as shown in FIG. 7, and this opening is an object to be photographed.

  The object to be photographed is an opening. If there is an object that touches the position of the fingerprint to be photographed, the fingerprint may remain on the surface even if the object is transparent, such as glass or plastic. Because.

  The finger guide 17 incorporates a switch 15. Therefore, the user can start the fingerprint authentication only by pressing the finger surface against the finger guide 17.

  As for the installation position of the finger guide 17, as shown in FIG. 6, the finger guide 17 is installed with an angle of, for example, 30 ° with respect to the installation surface of the camera 11 and the lens 12 is interposed between the finger guide 17 and the camera 11. It is preferable to do.

  Therefore, it is desirable to install the lens 12 with an angle of 30 ° to 45 ° with respect to the installation surface of the camera 11. Further, the LED 14 is installed so that the irradiation light illuminates the opening of the finger guide 17.

  The protective cover 18 is a protective member that prevents physical contact with the camera 11 and the lens 12. Moreover, if the inside of the protective cover 18 is sealed, it is possible to prevent dust and the like from being mixed.

  The shape of the protective cover 18 may be arbitrarily determined. For example, in the configuration shown in FIG. 8, a hemispherical protective cover 18a is employed, and the finger guide 17 is installed outside the protective cover 18a. Here, it is desirable to provide a distance between the finger guide 17 and the protective cover 18a so that the finger surface does not contact the protective cover 18a even when the finger is placed on the finger guide 17.

  In the configuration shown in FIG. 9, a semi-cylindrical protective cover 18b is adopted, and the finger guide 17 is installed outside the protective cover 18b. The same applies to the point that a distance is provided between the finger guide 17 and the protective cover 18 to prevent the finger surface from contacting the protective cover 18b.

  Subsequently, in the configuration shown in FIG. 10, a substantially semi-cylindrical protective cover 18c is provided on the outer side, and the finger guide 17 is attached on the protective cover 18c. Therefore, the protective cover 18 c has a similar opening at a location corresponding to the opening of the finger guide 17.

  In order to prevent physical contact from the opening to the camera 11 and the lens 12, an inner protective cover 18d is further attached. The inner protective cover preferably has a curvature in order to suppress reflection of illumination light by the LED 14, but the specific shape can be changed as appropriate. The configuration shown in FIG. 11 is a modification of the inner protective cover, and the inner protective cover 18e is attached to the inner surface of the protective cover 18c.

  Next, the processing operation of the authentication device 20 will be described with reference to the flowchart of FIG. First, in the initial state, the monitoring processing unit 24 monitors the surroundings using the photographing result of the camera 11 (step S101).

  If the approach of the human body is detected as a result of the peripheral monitoring (step S102, Yes), authentication by the authentication processing unit 23 is started. In the authentication process, first, a face image of a person approaching is acquired (step S103), and collation by the face image collation processing unit 27 is executed (step S104).

  As a result, when the face image matches the registered data, specifically, when the degree of coincidence calculated by the face image matching processing unit 27 is a sufficiently large value (above the authentication threshold) (step S105). , Yes), the authentication processing unit 23 authenticates that the person is a registered user (step S112), and ends the process.

  On the other hand, if the coincidence value calculated by the face image matching processing unit 27 is insufficient (No in step S105), the authentication processing unit 23 determines whether the coincidence value is sufficiently small (authentication impossible threshold). If it is sufficiently small (step S106, Yes), it is determined that the person is not a registered user (step S110), and the process is terminated.

  If the degree of coincidence calculated by the face image matching processing unit 27 is not sufficiently small (when larger than the authentication impossible threshold and less than the authentication threshold) (No at Step S106), the authentication processing unit 23 acquires a fingerprint image. (Step S107), collation by the fingerprint collation processing unit 28 is executed (Step S108).

  As a result, if the fingerprint image does not match the registered data (No at Step S109), the authentication processing unit 23 determines that the person is not a registered user (Step S110) and ends the process. .

  On the other hand, if the fingerprint image matches the registered data (step S109, Yes), the authentication processing unit 23 registers the face image for which authentication is not possible in the registered image database 26 (step S111). The person is authenticated as a registered user (step S112), and the process is terminated.

  As described above, the face image collation is used as the main collation, and when the main collation does not determine whether the authentication is possible or not, the fingerprint collation is performed as the sub collation to compensate for the face image collation reject.

  In addition, by focusing on face image verification, it is possible to provide non-contact / hands-free authentication to the user as much as possible, and for the administrator to be sure that a face photo will always remain. Can be provided.

  In addition, the face image changes due to a change due to age, a change due to a facial expression, a change of glasses, etc., and it is possible to obtain robust personal authentication against such a change.

  Furthermore, when personal authentication is possible through sub-collation, the face image at the time of main collation, that is, the face image for which authentication has not been determined can be registered as the registered user's face image, so that only face image collation will be performed next time. The system can be automatically adjusted so that authentication is possible.

  This automatic adjustment can minimize the opportunity for the user to check the fingerprint, which is a sub-collation, so as not to impair the convenience of the face title as much as possible. In addition, the burden on the system administrator can be reduced by reducing the rejection of the entire system.

  Such automatic adjustment is not an essential configuration. When automatic adjustment is not performed, when the fingerprint image matches the registered data (step S109, Yes), step S111 may be omitted and the process proceeds to step S112.

  By the way, in the processing flow shown in FIG. 12, two threshold values, that is, an authentication threshold value and an authentication failure threshold value are provided at the time of face image matching, and the face image matching degree is smaller than the authentication threshold value and larger than the authentication failure threshold value. In the above collation, the processing in the case where the fingerprint collation is performed when the authentication propriety cannot be determined has been described. However, for example, if the threshold for face image matching is only one of the authentication thresholds and fingerprint matching is performed when the threshold is lower than the authentication threshold, if either the face image or the fingerprint matches the registered information, the user is registered. Or authentication to judge may be performed.

  The processing operation of the authentication device 20 when performing OR authentication will be described with reference to the flowchart of FIG. First, in the initial state, the monitoring processing unit 24 monitors the surroundings using the photographing result of the camera 11 (step S201).

  If the approach of the human body is detected as a result of the peripheral monitoring (step S202, Yes), authentication by the authentication processing unit 23 is started. In the authentication process, first, a face image of a person approaching is acquired (step S203), and collation by the face image collation processing unit 27 is executed (step S204).

  As a result, if the face image matches the registered data (the matching degree calculated by the face image matching processing unit 27 is equal to or greater than the authentication threshold) (Yes in step S205), the authentication processing unit 23 registers the person. The user is authenticated (step S206), and the process is terminated.

  On the other hand, when the face image does not match the registered data (step S205, No), the authentication processing unit 23 acquires a fingerprint image (step S207), and executes collation by the fingerprint collation processing unit 28 (step S207). Step S208).

  As a result, if the fingerprint image does not match the registered data (No in step S209), the authentication processing unit 23 determines that the person is not a registered user (step S210), and the fingerprint image is registered. If it matches the data (step S209, Yes), the authentication processing unit 23 authenticates that the person is a registered user (step S206), and ends the process.

  Further, as a personal authentication method, AND authentication that determines that the user is a registered user only when both the face image and the fingerprint match the registered information can be adopted. The processing operation of the authentication device 20 when performing AND authentication will be described with reference to the flowchart of FIG. First, in the initial state, the monitoring processing unit 24 monitors the surroundings using the photographing result of the camera 11 (step S301).

  If the approach of the human body is detected as a result of the peripheral monitoring (step S302, Yes), authentication by the authentication processing unit 23 is started. In the authentication process, first, a face image of a person approaching is acquired (step S303), and collation by the face image collation processing unit 27 is executed (step S304).

  As a result, if the face image does not match the registered data (No at Step S305), it is determined that the person is not a registered user (Step S306), and the process is terminated.

  On the other hand, when the face image matches the registered data (the matching degree calculated by the face image matching processing unit 27 is equal to or higher than the authentication threshold) (Yes in step S305), the authentication processing unit 23 acquires a fingerprint image. (Step S307), collation by the fingerprint collation processing unit 28 is executed (Step S308).

  As a result, if the fingerprint image does not match the registered data (No at Step S309), the authentication processing unit 23 determines that the person is not a registered user (Step S306), and the fingerprint image is registered. If the data matches (step S309, Yes), the authentication processing unit 23 authenticates that the person is a registered user (step S310) and ends the process.

  As described above, the image authentication system according to the present embodiment optically changes the object distance by using the lens 12 for a part of the shooting range of the camera 11, so that the image for fingerprint matching and the image for face image matching are used. Images and peripheral monitoring images can be taken with a single camera, which simplifies the configuration and reduces costs.

  In addition, using facial image verification as the main verification and performing fingerprint authentication when the enemy who writes the approval / disapproval in the facial image verification cannot be used, the convenience of the user and the authentication accuracy are improved.

  Furthermore, if authentication is not possible with face image matching but authentication with fingerprint matching, the system automatically adjusts the system by registering the face image used in face image matching and using it for the next and subsequent checks. Convenience and authentication accuracy can be further improved.

  Note that the configuration shown in this embodiment is merely an example, and the present invention is not limited to this, and can be arbitrarily modified and implemented.

  For example, in the present embodiment, the case where authentication is started when the periphery is monitored in advance and the approach of the human body is detected has been described as an example. However, for example, when the movement of the object is detected by image recognition, the user switch When an operation is accepted, authentication may be started based on the output of another detection means such as an infrared sensor.

  In the present embodiment, the configuration in which fingerprint matching is performed after performing face image matching has been described as an example. However, the configuration may be such that face image matching and fingerprint matching are performed in any order.

  Furthermore, in the present embodiment, an example has been described in which the face image data and the fingerprint image data are stored one by one as the registered user information. However, for example, a structure in which a plurality of face image data is stored for one user. It may be.

  Furthermore, it is not always necessary to store the image itself as registered user information, and data indicating the characteristics of a face image or a fingerprint image may be stored.

  As described above, the image authentication device, the image capturing device, and the image authentication system according to the present invention are useful for personal authentication using an image, and in particular, a plurality of biometric information is acquired by a single camera to perform biometric authentication. Suitable for performing

It is a conceptual diagram explaining the concept of this invention. 1 is a schematic configuration diagram showing a schematic configuration of an image authentication system in the present embodiment. It is explanatory drawing explaining the process of the image process part shown in FIG. It is explanatory drawing explaining the registration image database shown in FIG. It is explanatory drawing explaining the output by the display output process part shown in FIG. It is a block diagram which shows the physical structural example of the camera unit shown in FIG. It is explanatory drawing explaining the shape of the finger guide shown in FIG. It is explanatory drawing explaining the shape of the protective cover shown in FIG. (Part 1) It is explanatory drawing explaining the shape of the protective cover shown in FIG. (Part 2) It is explanatory drawing explaining the shape of the protective cover shown in FIG. (Part 3) It is explanatory drawing explaining the shape of the protective cover shown in FIG. (Part 4) 3 is a flowchart for explaining a processing operation of the authentication apparatus shown in FIG. 2. It is a flowchart explaining the processing operation in the case of performing OR authentication. It is a flowchart explaining the processing operation in performing AND authentication.

Explanation of symbols

10 Camera unit 11 Camera 12 Lens 13 Control board 14 LED
DESCRIPTION OF SYMBOLS 15 Switch 16 Illuminance sensor 17 Finger guide 18 Protective cover 20 Authentication apparatus 21 Main control part 22 Registration process part 23 Authentication process part 24 Monitoring process part 25 Image process part 26 Registered image database 27 Face image collation process part 28 Fingerprint collation process part 29 Display output processing unit 30 Audio output processing unit 31 Authentication result output unit

Claims (11)

Photographing means having a first object distance;
Object distance changing means for changing the object distance to a second object distance different from the first object distance for a part of the imaging range of the imaging means;
An image authentication apparatus comprising: authentication means for performing personal authentication based on a result of photographing by the photographing means.   The image authentication apparatus according to claim 1, wherein the object distance changing unit is a lens for making the second object distance smaller than the first object distance.   The image authentication apparatus according to claim 1, wherein the photographing unit is a wide-angle camera.   The image authentication apparatus according to claim 1, wherein the authentication unit performs fingerprint collation using a fingerprint image photographed at the second object distance. A finger guide member installed in the vicinity of the second object distance;
5. The image according to claim 4, further comprising: an imaging means protection member installed between the finger guide member and the imaging means without contacting a finger pressed against the finger guide member. Authentication device.   The image authentication apparatus according to claim 1, wherein the authentication unit performs face image collation using a face image photographed at the first object distance.   The image authentication apparatus according to claim 1, further comprising a monitoring unit that performs periphery monitoring using a person image photographed at the first object distance.   The authentication means performs verification using the image captured at the second object distance when the result of verification using the image captured at the first object distance is insufficient for personal authentication. The image authentication apparatus according to claim 1, wherein:   As a result of collation using an image photographed at the second object distance, if an individual can be identified, an image photographed at the first object distance can be used for subsequent collation. 9. The image authentication apparatus according to claim 8, further comprising registration means for registering as an image. Photographing means having a first object distance;
An imaging apparatus comprising: object distance changing means for changing an object distance to a second object distance different from the first object distance for a part of an imaging range of the imaging means. An imaging unit having an imaging unit having a first object distance and an object distance changing unit for changing the object distance to a second object distance different from the first object distance for a part of the imaging range of the imaging unit. Equipment,
An image authentication system comprising: an authentication device that performs personal authentication based on a result of photographing by the photographing device.

Images