JP2004086320A - Individual authentication device, individual authentication system, portable terminal, and individual authentication program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an unauthorized access of a person except for an original person with a remote operation and to improve security in a system transmitting authentication data inputted by a portable terminal to an individual authentication device. <P>SOLUTION: A system is provided with a pattern generation part 13 generating a random pattern, a display part 5 displaying the generated random pattern, a transmission/reception part 2 receiving a face picture of an authenticated person, which the portable terminal photographs, and the random pattern, a face collation part 11 collating the received face picture with that of a registrant, which is stored in a storage part, a pattern collation part 14 collating the received random pattern with that generated in the pattern generation part 13 and a judging part 15 judging that the authenticated person is the registrant when collation results of the collation parts 11 and 14 are normal. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a personal authentication technique for authenticating a person using biometric data such as a face, an iris, a fingerprint, and a voice.
[0002]
[Prior art]
As the personal authentication device, for example, an authentication device based on face matching as described in Japanese Patent Application Laid-Open No. 11-167632 is generally well known. In this authentication device, an image of the face of the person (registrant) is captured and its feature amount is registered in advance, and when entering a specific place, an image of the face of the person is registered by a camera provided at the entrance. Is imaged to extract a feature amount, and each of the imaged image and the registered image is compared with each other in order to identify a person or another person based on the degree of coincidence of the feature amount.
[0003]
FIG. 13 is a diagram illustrating a conventional personal authentication device using face matching as described above. In the figure, B is a personal authentication device installed near a door 53, and includes a camera 51 and a display unit 52. The face image of the person to be authenticated is captured by the camera 51, and the feature amount of the captured face image is compared with the feature amount of the previously registered face image to determine whether or not the person to be authenticated is the registered person. Is determined. The determination result is displayed on the display unit 52. If the determination result is normal, the door 53 is unlocked and the knob 54 can be operated to enter the room. On the other hand, if the determination result is not normal, the door 53 is not unlocked and the knob 54 cannot be operated to enter the room.
[0004]
[Problems to be solved by the invention]
However, in such a conventional device, since the personal authentication device B is mounted at a position corresponding to the height of a general person, the height H of the camera 51 from the floor is low for a wheelchair user or a person of short height. It was too high and it was very difficult to capture a face image. As a solution to this, as shown in FIG. 14, it is conceivable to make the personal authentication device B movable up and down, but this requires a movable mechanism, guide rails and the like (not shown). In some cases, it cannot be installed, and the cost increases, which is not preferable in terms of design. Further, as shown in FIG. 15, it is conceivable to install the personal authentication devices B at the upper and lower positions, however, in this case, there is a problem that the cost is doubled.
[0005]
Therefore, as shown in FIG. 16, a wheelchair user 60 captures his / her own face image using a portable terminal 61 such as a camera-equipped mobile phone, and as shown in FIG. By transmitting the image to the device wirelessly or the like, it is not necessary to capture the face image with the personal authentication device, and the above-described problem can be solved. However, in this system, since the authentication data (face image) can be input to the personal authentication device even at a place remote from the personal authentication device, the person can remotely control the portable terminal 61 to obtain a person other than the person. Can be illegally entered, which causes a problem in security.
[0006]
The present invention solves the above-mentioned problems, and an object of the present invention is to provide a system for transmitting authentication data input from a mobile terminal to a personal authentication device, in which a person other than the person himself / herself is operated remotely. It is to improve security by preventing unauthorized access.
[0007]
[Means for Solving the Problems]
The personal authentication device according to the present invention is a personal authentication device that authenticates a person using biometrics data of an individual. Pattern generating means for generating a random pattern that changes irregularly with the display, display means for displaying the random pattern generated by the pattern generating means, and biometrics data of the person to be authenticated and the mobile terminal input at the mobile terminal. Receiving means for receiving the random pattern on the display means from the mobile terminal, biometric data of the authenticated person received by the receiving means, and first biometric data of the registrant stored in the storage means. Matching means, the random pattern received by the receiving means and the pattern generating means Second collating means for collating with the generated random pattern, and judging means for judging that the person to be authenticated is a registrant when the collation results of the first and second collating means are both normal. I have. Here, the biometrics data (Biometrics Data) refers to data obtained from the biological characteristics of an individual, and corresponds to, for example, feature amount data such as a face, an iris, a fingerprint, and a voice.
[0008]
In the present invention, in addition to the biometric data collation by the first collation means, the random pattern collation by the second collation means is performed, and the collation result of the biometric data is normal and the collation result of the random pattern is also normal. In such a case, the user is authenticated for the first time. Therefore, access is not permitted only when the biometric data matches, and access is permitted only when the random patterns match. Then, in order for the result of the random pattern collation to be normal, the subject must be in the vicinity of the personal authentication device and image the random pattern displayed on the authentication device with the mobile terminal as a precondition. . By doing so, it is possible to ensure the same time as the place and time, and to prevent unauthorized access by others from being operated from a distant place.
[0009]
A typical example of the biometric data is a face image. In this case, the portable terminal captures a face image and a random pattern, and the receiving means of the personal authentication device receives them. According to this, a camera attached to a mobile terminal can be used as an input unit of biometrics data, and this camera can capture both a face image and a random pattern.
[0010]
In a preferred embodiment, the determination result by the determination means is also displayed on the display means on which the random pattern is displayed. According to this, it is not necessary to separately provide a display unit for displaying a random pattern and a display unit for displaying a determination result, and one display unit can be used, so that the configuration is simplified.
[0011]
Further, the display means can be constituted by an LED array in which a plurality of LEDs are arranged in a plane. According to this, the random pattern is clearly displayed by turning on the LED, and the random pattern can be accurately imaged by the portable terminal.
[0012]
The display means may display a random pattern based on the fact that the receiving means has received the biometric data from the mobile terminal, or may display the random pattern based on a detection signal from the detecting means for detecting the approach of the authenticated person. It may be displayed.
[0013]
A personal authentication system according to the present invention includes the above-described personal authentication device, and a portable terminal that transmits biometric data of a person to be authenticated to the personal authentication device.
[0014]
The portable terminal according to the present invention includes an input unit to which biometrics data of a person to be authenticated is input, an imaging unit to image a random pattern displayed on a display unit of the personal authentication device, and a biometrics input by the input unit. Transmission means for transmitting the data and the random pattern imaged by the imaging means to the personal authentication device. This mobile terminal can be configured from an existing camera-equipped mobile phone. In this case, the input unit and the imaging unit are configured by the camera, and the face image and the random pattern captured by the camera are transmitted to the personal authentication device by the transmission unit.
[0015]
The personal authentication program according to the present invention is a program stored in the portable terminal, the procedure of receiving an input of biometric data of a person to be authenticated, and the step of transmitting the input biometric data to a personal authentication device. And a procedure for causing a computer to execute a procedure of capturing a random pattern displayed on the display means and a procedure of transmitting the captured random pattern to the personal authentication device. This program may be stored in the mobile terminal in advance, or may be downloaded from a server via a communication line (for example, the Internet). Alternatively, it may be stored in a recording medium such as a memory card mounted on the portable terminal.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a block diagram showing an embodiment of a personal authentication device A according to the present invention. In the figure, reference numeral 1 denotes a camera as an image pickup device for picking up an image of a face of a person to be authenticated, which is constituted by an electronic camera provided with an image pickup device such as a CCD (charge coupled device). The camera 1 is a camera for imaging the face of a general subject who is not a wheelchair user or a short person. Reference numeral 2 denotes a transmission / reception unit that performs wireless communication with a mobile terminal described later, and constitutes a receiving unit in the present invention. Reference numeral 3 denotes an antenna provided in the transmission / reception unit 2. Reference numeral 4 denotes a human detecting unit for detecting the approach of the person to be authenticated, which constitutes a detecting means in the present invention, and is constituted by, for example, a reflection type photoelectric sensor. Reference numeral 5 denotes a display unit for displaying a random pattern and a judgment result, which will be described later. The display unit 5 constitutes a display means in the present invention, and comprises, for example, an LED array in which a plurality of LEDs (light emitting diodes) are arranged in a plane. Reference numeral 6 denotes a control unit that performs processes such as collation and determination, and is configured by a computer having a CPU. Reference numeral 7 denotes a storage unit including a memory such as a ROM or a RAM, which constitutes a storage unit in the present invention, and stores a program executed by the control unit 6 and face image data (feature amount of a face) of a registrant. It is stored in advance.
[0017]
In the control unit 6, reference numerals 8 to 15 denote functional blocks realized by the CPU. Reference numeral 8 denotes an image acquisition unit which acquires image data by acquiring an image captured by the camera 1 and acquires image data by acquiring a random pattern image received by the transmission / reception unit 2 from the portable terminal. Reference numeral 9 denotes a face detection unit that detects a face from a captured image acquired by the image acquisition unit 8 from the camera 1. For the face detection, a known method such as a method based on skin color detection, a method for extracting a difference from a background image, and a method for extracting face likeness from pattern matching is used. Reference numeral 10 denotes a feature amount extraction unit that extracts a feature amount of a face from the face image obtained by the face detection unit 9, that is, a feature amount related to the shape and position of each part such as eyes, nose, mouth, and ears. The feature amount is extracted by using a known method of extracting the feature amount from the grayscale image of each part by template matching, for example. Reference numeral 11 denotes a face collation unit which constitutes first collation means in the present invention. The feature amount of the face of the authentication target extracted by the feature amount extraction unit 10 and the registrant stored in the storage unit 7 Is compared with the feature amount of the face. Specifically, the similarities are calculated by comparing the feature amounts of the respective faces, and it is determined whether or not this similarity is equal to or greater than a predetermined threshold. It is determined that they match, and if not more than the threshold, it is determined that the two face images do not match.
[0018]
Reference numeral 12 denotes a pattern detection unit, which detects a random pattern from a captured image acquired from the transmission / reception unit 2 by the image acquisition unit 8. Reference numeral 13 denotes a pattern generation unit, which constitutes a pattern generation unit in the present invention, and generates a random pattern (see FIG. 3) that is visible and changes irregularly with time. Reference numeral 14 denotes a pattern matching unit, which constitutes a second matching unit in the present invention, and matches a random pattern detected by the pattern detection unit 12 with a random pattern generated by the pattern generation unit 13 to compare both patterns. It is determined whether or not matches. Reference numeral 15 denotes a determination unit that performs personal authentication based on the result of the comparison by the face matching unit 11 and the result of the comparison by the pattern matching unit 14. Specifically, if both verification results are normal, it is determined that the authenticated person is a registrant, and if at least one of the two verification results is not normal, the authenticated person is not a registrant. judge.
[0019]
FIG. 2 is a diagram showing an installation example of the personal authentication device A having the above-described configuration. The personal authentication device A is installed at the entrance of a room where only a specific person is allowed to enter the room. Reference numerals 1, 3, and 5 denote the above-described camera, antenna, and display unit, respectively. As in the case of FIG. 13, the personal authentication device A is mounted at a position corresponding to the height of a general person, so that the camera 1 picks up images of wheelchair users or general subjects who are not short stature. Face. Although not shown here, the human detection unit 4 is installed at an appropriate location near the entrance. For example, the human detection unit 4 may be provided on the ceiling. 20 is a door at the entrance of the room, and 21 is a knob for opening the door 20. The door 20 is always locked so that the knob 21 cannot be operated to enter the room.
[0020]
FIG. 3 is a diagram illustrating an example of a random pattern displayed on the display unit 5. As described above, the display unit 5 is configured by the LED array 5a in which a plurality of LEDs are arranged in a plane, and the black circles in FIG. 3 represent the LEDs that emit light. The random pattern generated by the pattern generation unit 13 is a pattern that changes irregularly with time, and the LED emits light according to the pattern, so that a different pattern is displayed on the display unit 5 at intervals of several seconds. Is displayed. For example, when a few seconds elapse after the pattern as shown in FIG. 3A is displayed, the pattern changes as shown in FIG. 3B, and when a few seconds elapse thereafter, the pattern becomes as shown in FIG. Changes to Thereafter, similarly, the pattern displayed on the display unit 5 changes irregularly at intervals of several seconds.
[0021]
FIG. 4 is a block diagram showing an embodiment of the portable terminal 30 according to the present invention. In the present embodiment, the mobile terminal 30 is constituted by a camera-equipped mobile phone. In the figure, reference numeral 31 denotes a camera comprising an electronic camera provided with an image pickup device such as a CCD, which constitutes an input means and an image pickup means in the present invention, and images a face of a person to be authenticated and a personal authentication apparatus A. The random pattern displayed on the display unit 5 is imaged. An operation unit 32 includes various keys. Reference numeral 33 denotes a display unit, which comprises an LCD (liquid crystal display). Reference numeral 34 denotes a transmission / reception unit, which constitutes a transmission unit in the present invention, and wirelessly transmits the image of the face or the random pattern captured by the camera 31 to the transmission / reception unit 2 of the personal authentication device A. Reference numeral 35 denotes an antenna provided in the transmission / reception unit 34. Reference numeral 36 denotes a voice input unit, which includes a microphone for inputting voice during a call. Reference numeral 37 denotes an audio output unit, which includes a speaker that outputs audio during a call or an incoming call. Reference numeral 38 denotes a memory including a ROM, a RAM, and the like. The memory 38 stores a personal authentication program P according to the present invention. Reference numeral 39 denotes a CPU serving as control means constituting the computer, which controls the entire portable terminal 30.
[0022]
The personal authentication system according to the present invention is configured by the portable terminal 30 and the personal authentication device A described above.
[0023]
Next, an authentication procedure in the personal authentication system as described above will be described. Here, a schematic procedure will be described first with reference to a case where a wheelchair user accesses the personal authentication device A in FIG. 2 using the portable terminal 30 as an example. First, as shown in FIG. 5, a wheelchair user 41 (a person to be authenticated) who has reached the vicinity of the installation location of the personal authentication device A on the wheelchair 42 is self-identified by the camera 31 attached to the mobile terminal 30. Image the face. It should be noted that the face image may be captured in advance at a location away from the installation location of the personal authentication device A. Next, the wheelchair user 41 operates the operation unit 32 of the portable terminal 30 to transmit the captured face image to the personal authentication device A from the antenna 35 as shown in FIG. When the personal authentication device A receives the image of the face from the mobile terminal 30, a random pattern is displayed on the display unit 5, so that the wheelchair user 41 can subsequently display the display unit of the personal authentication device A as shown in FIG. The camera 31 of the mobile terminal 30 captures an image of the random pattern displayed on 5. When the imaging is completed, the image of the random pattern is automatically transmitted from the antenna 35 to the personal authentication device A, as shown in FIG.
[0024]
In the personal authentication device A, the transmitting / receiving unit 2 receives the image of the face transmitted from the mobile terminal 30 via the antenna 3, and subsequently receives the image of the random pattern. The received face image is sent to the face detection unit 9 via the image acquisition unit 8 to detect the face, and the feature amount extraction unit 10 extracts the feature amount of the face. The face matching unit 11 calculates a similarity based on the extracted feature amount and the feature amount stored in the storage unit 7, and checks whether the faces match or not according to whether the similarity is equal to or greater than a predetermined threshold. I do. On the other hand, the received image of the random pattern is sent to the pattern detection unit 12 via the image acquisition unit 8, and the pattern is detected. The pattern matching unit 14 compares the detected pattern with the pattern generated by the pattern generation unit 13 to check whether the two patterns match. Then, the determination unit 15 determines whether the matching result of the face matching unit 11 and the matching result of the pattern matching unit 14 are both normal, that is, the face image transmitted from the mobile terminal 30 and registered in the storage unit 7. When the face image matches and the pattern transmitted from the mobile terminal 30 matches the pattern generated by the pattern generation unit 13, the wheelchair user 41 is determined to be a registrant, and the entrance door 20 Unlock the lock. Thereby, the wheelchair user 41 can operate the knob 21 to open the door 20 and enter the room.
[0025]
Next, details of the processing procedure in each of the portable terminal 30 and the personal authentication device A will be described. FIG. 9 is a flowchart illustrating a processing procedure in the mobile terminal 30, and illustrates a control procedure of the personal authentication program P executed by the CPU 39. First, when the transmission mode to the personal authentication device A is selected by operating the operation unit 32 (step S1), for example, a message “Please take a face image” is displayed on the display unit 33, and the camera 31 The face is imaged (steps S2, S3). The captured face image is temporarily stored in a predetermined area of the memory 38 (FIG. 4). When the imaging of the face is completed (step S3: YES), for example, a message “Please send a face image” is displayed on the display unit 33, and the captured face image is transmitted to the transmitting / receiving unit 34 and the antenna by operating the operation unit 32. The data is transmitted from 35 to the personal authentication device A (step S4). When the transmission is completed, for example, a message “Please take a pattern” is displayed on the display unit 33, and the random pattern displayed on the display unit 5 of the personal authentication device A is captured by the camera 31 (steps S5 and S6). ). The captured image of the pattern is temporarily stored in a predetermined area of the memory 38. When the imaging of the random pattern is completed (step S6: YES), for example, a message “transmit the pattern image” is displayed on the display unit 33, and the captured random pattern is transmitted from the transmitting / receiving unit 34 and the antenna 35 to the personal authentication device A. It is automatically transmitted (step S7), and the series of procedures ends. Here, the case where the face image is transmitted by the operation of the operation unit 32 has been described as an example. However, similarly to the pattern image, the face image may be automatically transmitted at the time when the face imaging is completed. Good.
[0026]
FIG. 10 is a flowchart illustrating a processing procedure in the personal authentication device A, and illustrates a control procedure executed by the control unit 6. In the personal authentication device A, whether or not the human detection unit 4 has detected a person is constantly monitored (step S11). When a person is detected (step S11: YES), the human detection unit 4 starts capturing an image on the camera 1. A signal is sent, and the camera 1 operates to start imaging (step S12). Subsequently, it is determined whether or not the image acquisition unit 8 has acquired the face image from the camera 1 (step S13).
[0027]
If the face image can be acquired from the camera 1 (step S13: YES), the subject to be authenticated at that time is not the wheelchair user 41 but the ordinary person. In this case, the feature amount of the face is extracted by the feature amount extracting unit 10 (step S14), and the face matching unit 11 performs the process based on the extracted feature amount and the feature amount of the face stored in the storage unit 7. Similarity is calculated and face matching is performed (steps S15 and S16). In this case, if the calculated similarity is equal to or greater than the predetermined threshold, the collation result is determined to be normal (face matching) (step S16: YES). Is not normal (face mismatch) (step S16: NO).
[0028]
If the result of the comparison by the face comparison unit 11 is normal, the determination unit 15 authenticates that the person to be authenticated is the registrant (step S17), and performs a process of permitting entry into the room (step S18). That is, the determination result OK is displayed (circled) on the display unit 5 as shown in FIG. 11A, and a signal of permission to enter the room is output from the determination unit 15 as a determination output, whereby the door 20 is locked. When released, the subject can operate the knob 21 to enter the room. On the other hand, if the collation result in the face collation unit 11 is not normal, the discrimination unit 15 rejects the authentication that the certifier is the registrant (step S19), and performs the entry prohibition process (step S20). That is, the determination result NG is displayed on the display unit 5 as shown in FIG. 11B (marked with “x”), and a signal indicating that entry is prohibited is output from the determination unit 15 as a determination output, and the door 20 is kept locked. You. For this reason, the subject cannot operate the knob 21 to enter the room. Note that FIG. 11 is an example of the display, and it is a matter of course that the determination result may be displayed in other forms (for example, characters).
[0029]
Next, in step S13, when a face image cannot be obtained from the camera 1 (step S13: NO), it is determined whether a face image has been obtained from the transmission / reception unit 2 (step S21). If the transmission / reception unit 2 does not receive a face image from the mobile terminal 30 (step S21: NO), the process returns to step S12 and the imaging by the camera 1 is continued. If the transmitting / receiving unit 2 receives the face image from the mobile terminal 30 (step S21: YES), the random person is displayed on the display unit 5 because the person to be authenticated at that time is the wheelchair user 41 (step S22). . After that, it waits for the captured image of the random pattern to be transmitted from the mobile terminal 30 (step S23), and when the transmitting / receiving unit 2 receives the image of the random pattern (step S23: YES), the pattern detection is performed from the received image. The unit 12 detects a random pattern, and the pattern matching unit 14 checks whether the detected pattern matches the pattern generated by the pattern generation unit 13 (step S24). In this case, if the detected pattern matches the generated pattern, the collation result is determined to be normal. If the detected pattern does not match the generated pattern, the collation result is determined to be incorrect. Whether the two patterns match is determined based on whether the received pattern is the same as the pattern currently displayed on the display unit 5. Alternatively, in consideration of the time required for capturing the pattern, it is determined whether the received pattern is the same as the pattern displayed on the display unit 5 from the point in time when a very short period of time (for example, 30 seconds) has elapsed from the present to the present. The determination may be made.
[0030]
If the matching result in the pattern matching unit 14 is normal (step S25: YES), all the LEDs on the display unit 5 are turned off, and the display of the random pattern ends (step S26). Move to the processing of. In step S14, the feature amount extraction unit 10 extracts the feature amount of the face from the face image acquired in step S21. Then, based on the extracted feature amount and the face feature amount stored in the storage unit 7, the face matching unit 11 calculates the similarity and performs face matching (steps S15 and S16). If the similarity is equal to or greater than a predetermined threshold, the matching result is determined to be normal (face matching) (step S16: YES), and if the similarity is not equal to or greater than the predetermined threshold, the matching result is not normal (face It is determined that they do not match (step S16: NO).
[0031]
If the result of the comparison by the face comparison unit 11 is normal, the determination unit 15 authenticates that the wheelchair user 41 is the registrant (step S17), and performs entry permission processing (step S18). That is, the determination result OK is displayed (circled) on the display unit 5 as shown in FIG. 11A, and a signal of permission to enter the room is output from the determination unit 15 as a determination output, whereby the door 20 is locked. Once released, the wheelchair user 41 can operate the knob 21 to enter the room. On the other hand, if the collation result in the face collation unit 11 is not normal, the determination unit 15 rejects the authentication that the wheelchair user 41 is the registrant (step S19), and performs the entry prohibition process (step S20). ). That is, the determination result NG is displayed on the display unit 5 as shown in FIG. 11B (marked with “x”), and a signal indicating that entry is prohibited is output from the determination unit 15 as a determination output, and the door 20 is kept locked. You. For this reason, the wheelchair user 41 cannot operate the knob 21 to enter the room.
[0032]
In step S25, if the result of the comparison by the pattern matching unit 14 is not normal, that is, if the patterns do not match (step S25: NO), the random pattern captured by the mobile terminal 30 is currently displayed on the display unit 5. It is determined that the image has not been captured but is captured in the past, and the process proceeds to step S19 to reject the authentication.
[0033]
In this way, the determination unit 15 performs authentication based on the matching result between the face matching unit 11 and the pattern matching unit 14, and when the matching result of the pattern is normal (pattern matching) and the matching result of the face Is also normal (face matching), the authenticated person is authenticated as the registrant. On the other hand, if the pattern matching result is not normal (pattern mismatch) or if the face matching result is not normal (face mismatch), Refuse authentication. For this reason, if the face image of the person to be authenticated merely matches the face image of the registrant, the person to be authenticated is not authenticated, and the current random pattern displayed on the display unit 5 and the image captured by the portable terminal 30 are taken. Only when the random pattern matches the authenticated person is the authenticated person authenticated.
[0034]
As a result, even if an attempt is made to access by transmitting only the face image of the user from the mobile terminal 30 at a location remote from the personal authentication device A, the pattern matching result will not be normal because the random pattern is not transmitted. , Authentication is rejected. Further, even if a random pattern on the display unit 5 is imaged in advance and stored in the mobile terminal 30 and transmitted together with the face image of the person, the random pattern is the same as the pattern currently displayed on the display unit 5. However, since the pattern is a pattern displayed in the past, the pattern matching result is not normal, and the authentication is rejected.
[0035]
Therefore, in order for the face to be authenticated when the result of the face verification is normal, the condition is that the location and the time are the same, that is, the pattern currently displayed in the vicinity of the personal authentication device A is imaged. . By doing so, it becomes impossible for the person to remotely control the portable terminal 30 at a location away from the personal authentication device A to illegally enter another person, thereby improving security.
[0036]
In the embodiment described above, since the face image is used as the biometric data for authentication, the face image can be input by the camera 31 attached to the mobile terminal 30, and the means for inputting the biometric data is provided. There is no need to provide them separately, and both a face image and a random pattern can be captured by the camera 31. In addition, an existing camera-equipped mobile phone can be used as the mobile terminal 30.
[0037]
In the above-described embodiment, the determination result is displayed on the display unit 5 on which the random pattern is displayed. Therefore, the display unit for displaying the random pattern and the display unit for displaying the determination result are separately provided. There is no need, and the configuration is simplified.
[0038]
In the above-described embodiment, since the display unit 5 is configured by the LED array 5a in which a plurality of LEDs are arranged in a plane, a random pattern is clearly displayed by turning on the LEDs, and the camera of the portable terminal 30 is controlled. At 31, a random pattern can be accurately imaged.
[0039]
FIG. 12 is a flowchart showing another embodiment of the present invention, and shows another example of the processing procedure in the personal authentication device A. 12, the same steps as those in FIG. 10 are denoted by the same reference numerals. In FIG. 10, when the transmitting / receiving unit 2 receives an image from the mobile terminal 30 (step S21), a random pattern is displayed on the display unit 5 (step S22). In FIG. 12, the human detection unit 4 detects a human. Then (step S11), at the same time as the camera 1 starts imaging (step S12), a random pattern is displayed on the display unit 5 (step S12a). Accordingly, if a face image can be obtained from the camera 1 (step S13), the display of the random pattern is terminated at that time (step S13a). Other points are the same as those in FIG. 10, and the description is omitted here. In the case of FIG. 10, the face image must be transmitted before capturing the random pattern, but in the case of FIG. 12, it is also possible to capture the random pattern first and then transmit the face image. .
[0040]
The present invention can employ various embodiments other than those described above. For example, as the biometrics data, in addition to the above-described face image, data such as an iris, a fingerprint, and voice can be used. In this case, input means corresponding to each biometrics data is provided in the personal authentication device A and the portable terminal 30. As an example, when using fingerprint collation, a fingerprint collator is provided in addition to the cameras 1 and 31.
[0041]
Further, the display unit 5 of the personal authentication device A may be configured by an LCD (liquid crystal display) instead of the LED array 5a described above. In this case, the random pattern displayed on the display unit 5 may be a video, a character, or the like.
[0042]
In the above embodiment, a camera-equipped mobile phone has been described as an example of the mobile terminal 30. However, the mobile terminal of the present invention is not limited to a mobile phone, and may include a unit for inputting biometrics data and a unit for imaging a random pattern. Any type of mobile terminal can be used as long as the mobile terminal includes means for transmitting biometrics data and a random pattern. Further, the communication means between the portable terminal 30 and the personal authentication device A is not limited to the above-mentioned wireless communication, but may use infrared rays or the like.
[0043]
Further, the personal authentication device of the present invention is not limited to the one installed at the entrance of the room as described above, and may be installed at the entrance of a gate that restricts entry to a specific place.
[0044]
【The invention's effect】
According to the present invention, by performing random pattern matching, only when a random pattern is imaged in the vicinity of the personal authentication device, the identity of the user is authenticated and access such as entry to a room is permitted. It becomes impossible to allow unauthorized access to anyone other than the user by an operation from the user, thereby improving security.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of a personal authentication device according to the present invention.
FIG. 2 is a diagram showing an installation example of a personal authentication device.
FIG. 3 is a diagram showing an example of a random pattern.
FIG. 4 is a block diagram showing an embodiment of a portable terminal according to the present invention.
FIG. 5 is a diagram illustrating a schematic procedure of authentication.
FIG. 6 is a diagram illustrating a schematic procedure of authentication.
FIG. 7 is a diagram illustrating a schematic procedure of authentication.
FIG. 8 is a diagram illustrating a schematic procedure of authentication.
FIG. 9 is a flowchart showing a processing procedure in the portable terminal.
FIG. 10 is a flowchart showing a processing procedure in the personal authentication device.
FIG. 11 is a display example of a determination result.
FIG. 12 is a flowchart showing another embodiment.
FIG. 13 is a diagram illustrating a conventional example.
FIG. 14 is a diagram illustrating a conventional example.
FIG. 15 is a diagram illustrating a conventional example.
FIG. 16 is a diagram illustrating a conventional example.
FIG. 17 is a diagram illustrating a conventional example.
[Explanation of symbols]
1 camera
2 Transceiver
4 Human detection unit
5 Display
5a LED array
6 control unit
7 Storage unit
11 Face matching unit
13 Pattern generator
14 Pattern matching section
15 Judgment unit
30 mobile terminals
31 Camera
34 transceiver
41 Wheelchair user (certified person)
A Personal authentication device
P Personal authentication program

Claims (10)

A personal authentication device that authenticates an individual using personal biometrics data,
Storage means in which registrant biometric data is stored in advance;
Pattern generation means for generating a random pattern that is visible and changes irregularly with time;
A display unit for displaying the random pattern generated by the pattern generation unit; a biometric data of the person to be authenticated input at the mobile terminal; and a random pattern on the display unit captured by the mobile terminal, received from the mobile terminal. Receiving means,
First matching means for comparing the biometric data of the person to be authenticated received by the receiving means with the biometric data of the registrant stored in the storage means;
A second comparing unit that compares the random pattern received by the receiving unit with the random pattern generated by the pattern generating unit;
Determining means for determining that the person to be authenticated is a registrant when both of the matching results of the first and second matching means are normal;
A personal authentication device comprising: The personal authentication device according to claim 1,
The biometrics data is a face image,
The personal authentication device, wherein the receiving unit receives a face image and a random pattern captured by the mobile terminal from the mobile terminal. In the personal authentication device according to claim 1 or 2,
A personal authentication device, wherein a result of the determination by the determination means is displayed on the display means. The personal authentication device according to any one of claims 1 to 3,
The personal identification device according to claim 1, wherein said display means comprises an LED array in which a plurality of LEDs are arranged in a plane. The personal authentication device according to any one of claims 1 to 4,
The personal authentication apparatus, wherein the display unit displays the random pattern based on the reception unit receiving biometrics data from a mobile terminal. The personal authentication device according to any one of claims 1 to 4,
A detecting means for detecting the approach of the person to be authenticated,
The personal authentication device, wherein the display means displays the random pattern based on a detection signal from the detection means. A personal authentication system comprising: a personal authentication device that authenticates an individual using personal biometrics data; and a mobile terminal that transmits biometric data of a person to be authenticated to the personal authentication device,
The personal authentication device,
Storage means in which registrant biometric data is stored in advance;
Pattern generation means for generating a random pattern that is visible and changes irregularly with time;
Display means for displaying the random pattern generated by the pattern generation means, biometric data of the person to be authenticated input at the mobile terminal, and a random pattern on the display means imaged by the mobile terminal from the mobile terminal Receiving means for receiving,
First matching means for comparing the biometric data of the person to be authenticated received by the receiving means with the biometric data of the registrant stored in the storage means;
A second comparing unit that compares the random pattern received by the receiving unit with the random pattern generated by the pattern generating unit;
A determination unit that determines that the person to be authenticated is a registrant when both of the verification results of the first and second verification units are normal;
The mobile terminal,
Input means for inputting biometric data of the subject;
Imaging means for imaging a random pattern displayed on the display means of the personal authentication device,
A personal authentication system, comprising: transmission means for transmitting the biometric data input by the input means and the random pattern imaged by the imaging means to a personal authentication device. A mobile terminal for transmitting biometrics data of a person to be authenticated to the personal authentication device according to claim 1,
Input means for inputting biometric data of the subject;
Imaging means for imaging a random pattern displayed on the display means of the personal authentication device,
Transmission means for transmitting the biometrics data input by the input means, and a random pattern imaged by the imaging means to a personal authentication device,
A mobile terminal comprising: The mobile terminal according to claim 8,
The mobile terminal is a camera-equipped mobile phone including a camera that constitutes the input unit and the imaging unit. The mobile terminal transmits a face image and a random pattern captured by the camera to the personal authentication device from the transmission unit. Characteristic mobile terminal. A program stored in the mobile terminal according to claim 8,
A procedure for receiving input of the biometric data of the subject;
Procedure for transmitting the input biometrics data to the personal authentication device,
Imaging a random pattern displayed on the display means,
Transmitting the captured random pattern to the personal authentication device,
Program for personal authentication to make a computer execute.

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