JPH054517B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an entrance/exit management system using an identification device that compares patterns unique to individuals such as palm prints, fingerprints, and voices.

If you use an identity verification device that memorizes characteristic patterns unique to individuals, such as palm prints, fingerprints, and voices, and determines the degree of similarity with the input characteristic pattern, it is possible to identify someone other than the registrant. Entrance/exit control can be performed for buildings, etc., where entry and exit are prohibited. By the way, in an identity verification device, if the degree of similarity is above a certain threshold, it is determined to be the real person, and if it is below the threshold, it is judged to be an impostor, but it is impossible to obtain a 100% recognition rate, and the person is rejected as a false recognition. or an impostor may be accepted. Therefore, it is difficult to perform entrance/exit management based only on the determination results of the personal identification device. Furthermore, when a speaker verification device is used as a person recognition device by comparing voice feature patterns, the stored reference pattern of the registrant may be updated using the input pattern in order to cope with changes in voice over time. This is possible, but if a misrecognition is made in which the impostor is accepted as the principal, there is a risk that the imposter's input pattern will be used to update the reference pattern. Another drawback was that the input pattern could not be used to update the reference pattern, making it impossible to update effectively and leading to a decrease in recognition rate.

This invention was made to improve these drawbacks, and proposes an entrance/exit management system that reduces false recognition and has an effective learning function for updating reference patterns. The present invention will be explained in detail by taking as an example a case in which a person verification device is used.

FIG. 1 shows an example of the configuration of an entrance/exit management system according to the present invention, in which 1a and 1b are doors,
2a and 2b are door control devices that automatically open and close the doors 1a and 1b, 3 is a registration number input device, 4 is a microphone, 5 is a speaker verification device, 6 is a television camera, and 7 is placed in the room where the administrator is located. A terminal device for displaying the judgment results of the speaker verification device 5 and for the administrator to input the judgment; 8 a storage device for recording portrait image information of the registrant; 9 an image of the television camera 6 and storage in the recording device 8; This is a display device that displays images that are being displayed.

Next, the operation of the present invention will be explained using the drawings. A person wishing to enter or exit the gate passes through the normally open door 1a, enters the registration number into the registration number input device 3, requests his or her reference pattern in the speaker verification device, and faces the microphone 4. utter the words that were asked. The speaker matching device 5 converts the input speech into a pattern of feature parameters, and compares the pattern with the previously requested reference pattern to determine the degree of similarity. Figure 2 shows the case where the registered person speaks,
It is a diagram showing the similarity distribution when an impostor other than the principal occurs, where A is the distribution of similarity between the principal and B the impostor. Further, L ₁ and L ₂ are threshold values used for determination. The speaker matching device 5 compares the obtained degree of similarity with a threshold value, and if the degree of similarity is greater than _L2 ,
The judgment result that the inputter is the person himself or herself, and the L ₁
If it is smaller than that, a determination result is obtained that the inputter is an impostor. On the other hand, if the similarity is between L ₁ and L ₂ , the determination is suspended. If the judgment is pending, the terminal device 7 informs the administrator that the judgment is pending.
At the same time, the registration number is sent to the storage device 8, and the stored portrait image of the registrant is displayed on the display device 9 together with the image of the television camera 6 that started operating in response to the signal from the speaker verification device 5. will be displayed. The administrator compares both images and transmits the determination result as to whether the input person is the real person or the impostor from the terminal device 7 to the speaker verification device 5. If the person making the input is determined to be the person himself or herself based on the determination information of the speaker verification device 5 and the administrator, a signal is sent to the door control device 2b.
Door 1b opens to allow entry or exit. In addition, if it is determined that the person is an impostor, the door control device 2a
A signal is sent to the door 1a, the door 1a is closed, the impostor is restrained, the terminal device 7 displays that the imposter has entered, and the television camera 6 is operated to project an image on the display device 9. On the other hand, when updating the reference pattern in the speaker verification device 5, by using the administrator's judgment information, even if the degree of similarity is between _L1 and _L2 , only the person's input pattern can be used for updating. This makes it possible to perform effective learning and improve the recognition rate of the speaker verification device 5. Although the explanation has been made using a speaker verification device, an identity verification device that uses palm prints, fingerprints, etc. as personal characteristic patterns can also operate because a similarity distribution similar to that shown in Fig. 2 can be obtained. is the same as in the case of the speaker verification device.

As explained above, according to the present invention, by updating the standard pattern using the judgment result of the entrance/exit manager, effective learning can be achieved by appropriately updating the standard pattern without increasing the burden on the user. This has the effect of making it possible.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an example of the configuration of the entrance/exit management system according to the present invention, and Fig. 2 shows the relationship between the distribution of similarity between reference patterns of input patterns in an identity verification device for each person and impostor, and the threshold value. It is a diagram. In the figure, 1a and 1b are doors, 2a and 2b are door control devices, 3 is a registration number input device, 4 is a microphone, 5 is a speaker verification device, 6 is a television camera, and 7
8 is a terminal device, 8 is a recording device, and 9 is a display device.

Claims (1)

[Claims] 1. An identity verification device that performs multi-threshold judgment on the degree of similarity between an input characteristic pattern unique to an individual and a pre-stored reference pattern, and suspends the determination if the degree of similarity is in an area that would cause erroneous identification; In this case, the administrator is required to confirm the registrant's portrait image storage device, a television camera that captures the input person, a display device that compares and displays both images, and the administrator inputs the judgment result and confirms the identity of the person. In an entrance/exit management system that has a terminal device that sends information to the device and door control device, and a door control device that automatically opens and closes the door based on the identification information of the identification device and the administrator, input data is input based on the similarity threshold judgment of the identification device. In addition to cases in which the person is judged to be the person in question, reference is also made to the input pattern when the administrator's judgment information received from the terminal device indicates that the user is judged to be the person in question under judgment pending conditions due to similarity threshold judgment. An entry/exit management system characterized in that the identification device is configured to perform pattern update learning.