KR20200095042A - System and method for controlling access using biometric information - Google Patents

Abstract

Provided are an access control system using biometric data and a method thereof. The access control system receives an accessor authentication point distance signal indicating a location of an accessor in a measurement section from a camera installed in the measurement section for access control and performs biometric authentication using an image acquired through the camera when it is determined that the accessor has passed a preset point in the measurement section according to an accessor authentication distance signal.

Description

Access control system and method using biometric information {System and method for controlling access using biometric information}

The present invention relates to authentication using biometric information, and more specifically, to a system and method for controlling access using biometric information.

As the information society matures, the need for security and authentication technology is required, and accordingly, various approaches for user recognition have been developed. Among them, a recognition method using biometric information that recognizes physical characteristics such as face shape, iris, fingerprint, and voice has increased its market share by providing high reliability, ease of use, and fast authentication speed.

Technology using biometrics is being used in a variety of applications, and in particular, the use of biometric gates that allow a specific person to enter by using biometrics is increasing. Sensors are installed in the passage of the biometric gate at regular intervals, and each sensor is used to detect whether or not a person enters or exits.

However, there are various gates produced by multiple companies, and the number, location, and operation method of sensors are different for each gate, so that software that performs biometric authentication needs to be modified for each gate employed. This leads to an input of development resources.

In addition, when the gap between the sensors is wide and the person passes slowly or the person with a slim body stops at the gap between the sensors, a phenomenon in which the corresponding person is not detected may occur. Accordingly, the biometric gate may unnecessarily attempt re-authentication or authentication using the back view (eg, the back of the head) of the person entering may not be performed accurately.

As a related prior document, there is a "multi-biometric recognition device and an access system including the same" described in Korean Patent Application Publication No. 10-2018-0094189.

The problem to be solved by the present invention is to provide a system and method capable of controlling access or not by checking the location of a visitor using a TOF (Time of Flight) camera and performing accurate authentication according to biometric information.

A method according to an embodiment of the present invention is a method in which a system for controlling access through a gate performs access control, wherein the system includes a location of a visitor in the measurement section from a camera installed in a measurement section for access control. Receiving a distance signal indicating a visitor authentication point; Performing, by the system, biometric authentication using an image obtained through the camera when it is determined that the accessor has passed a preset point in the measurement section according to the accessor authentication distance signal; And controlling, by the system, opening or closing of the gate according to the result of the biometric authentication.

The measurement section includes a first section and a second section, the first section includes a first set point and a second set point, and the second section includes a third set point and a fourth set point, , The first set point, the second set point, the third set point, and the fourth set point may be sequentially arranged in an order close to a direction in which a person entering the measurement section.

In the performing of the biometric authentication, it is determined that the accessor first passes the first set point of the first section or the fourth set point of the second section first according to the passer-by-passer authentication distance signal. If yes, biometric authentication may be performed using an image acquired through the camera.

The camera may include a first camera that photographs the first section and a second camera that photographs the second section. In this case, the performing of the biometric authentication includes an image obtained through the first camera when it is determined that the accessor first passes the first set point in the first section according to the accessor authentication distance signal. Performing biometric authentication using; And performing biometric authentication using an image obtained through the second camera when it is determined that the accessor first passes the fourth set point in the second section according to the accessor authentication distance signal. I can.

On the other hand, the performing of the biometric authentication may include passing through the first set point after the accessor passes the second set point of the first section according to the passer authentication distance signal, or If it is determined that the fourth set point has passed after passing the third set point, the step of not performing biometric authentication may be included.

The camera is a TOF (Time of Flight) 3D camera, and the accessor authentication point distance signal may indicate a location of a visitor in the measurement section based on a distance measured by the TOF 3D camera.

The performing of the biometric authentication may include determining whether the biometric information obtained from the image acquired through the camera matches the biometric information stored in the biometrics database.- The biometric information for each user and the corresponding Card ID information included -; And allowing access authentication when the biometric information obtained from the image matches the biometric information stored in the biometric identification database.

The performing of the biometric authentication may include requesting access permission by transmitting card ID information corresponding to the matched biometric information to a gate controller controlling the gate; Receiving a result according to the access permission request; And transmitting a result of the biometric authentication to the gate controller together with an access authorization confirmation signal indicating that the result according to the access authorization request has been confirmed.

A system according to another embodiment of the present invention is an access control system for controlling access through a gate, comprising: a network interface device for communicating with a camera installed in a measurement section for access control; A processor configured to perform authentication using biometric information based on an image from the camera received through the communication unit; And a biometrics database including biometric information for each user, wherein the processor includes: the accessor passing through a preset point in the measurement section according to a distance signal of a visitor authentication point indicating a location of the visitor in the measurement section. When it is determined that it is determined to be, biometric authentication is performed using an image obtained through the camera, and a signal for controlling opening or closing of the gate is transmitted through the network interface device according to the biometric authentication result.

The measurement section includes a first section and a second section, the first section includes a first set point and a second set point, and the second section includes a third set point and a fourth set point, , The first set point, the second set point, the third set point, and the fourth set point may be sequentially arranged in an order close to a direction in which a person entering the measurement section.

The processor performs authentication when it is determined that the accessor first passes the first set point in the first section or first passes through the fourth set point in the second section according to the access person authentication distance signal. A control processing unit configured to trigger; And an authentication processing unit configured to perform biometric authentication using an image acquired through the camera according to authentication triggering of the control processing unit.

The camera may include a first camera that photographs the first section and a second camera that photographs the second section. In this case, when it is determined that the accessor first passes the first set point of the first section according to the accessor authentication distance signal, the control processor requests authentication to the authentication processing unit, and according to the authentication request The authentication processing unit is configured to perform biometric authentication using an image acquired through the first camera, and the control processing unit includes the accessor to determine the fourth set point of the second section according to the accessor authentication distance signal. If it is determined to pass first, the authentication may be requested to the authentication processing unit, and the authentication processing unit may be configured to perform biometric authentication using an image obtained through the second camera according to the authentication request.

The processor, according to the accessor authentication distance signal, passes through the first set point after the accessor passes the second set point in the first section, or passes through the third set point in the second section Then, when it is determined that the fourth set point has passed, it may be configured not to perform biometric authentication.

The biometrics database may include user-specific biometric information and card ID information corresponding thereto, and the processor determines whether the biometric information obtained from the image obtained through the camera matches the biometric information stored in the biometric database. It can be configured to perform authentication based on it.

According to an embodiment of the present invention, in controlling access using biometric information, as the location information of the visitor is secured with the TOF 3D camera, the visitor passes through the set point without using a sensor to detect the person at the gate. It can accurately detect whether or not. As the sensor is not used, there is an advantage in that the software modification cost incurred for each gate is not incurred depending on the operation method for each sensor. In addition, since the embodiment according to the present invention can be applied regardless of the gate type, there is no need to modify software for each gate.

In addition, if it is determined that the person is leaving the measurement section instead of entering the measurement section based on the location information of the person with the TOF 3D camera, biometric authentication is not performed, so the back view of the exiting person (e.g., back head) It is possible to prevent a phenomenon of performing erroneous authentication by using the photographed information, and also, an undetected phenomenon is prevented.

1 is a diagram showing the concept of long-distance multi-biometric recognition according to an embodiment of the present invention.
2 is a diagram showing the structure of an access control system according to an embodiment of the present invention.
3 is a flowchart of an access control method of an access control system according to an embodiment of the present invention.
4 is a detailed flowchart illustrating a biometric authentication process in an access control method according to an embodiment of the present invention.
5 is a structural diagram of an access control system according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

In addition, in order to clearly describe the present invention in the drawings, parts irrelevant to the description are omitted, and like reference numerals are assigned to similar parts throughout the specification.

Throughout the specification and claims, when a certain part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

In the present specification, expressions expressed in singular may be interpreted as singular or plural unless explicit expressions such as “one” or “single” are used.

In addition, terms including ordinal numbers such as first and second used in the embodiments of the present invention may be used to describe the elements, but the elements should not be limited by terms. The terms are only used to distinguish one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may also be referred to as a first component.

Hereinafter, an access control system and method using biometric information according to an embodiment of the present invention will be described.

1 is a conceptual diagram of access control using biometric information according to an embodiment of the present invention.

In an embodiment of the present invention, biometric information is obtained using a TOF (Time of Flight) camera, and a gate through which access is performed is controlled according to the obtained biometric information. TOF measures the distance to an object using signals (ultrasound, laser, etc.). Specifically, it is a method of calculating the distance by measuring the time the signal from the light source returns to the object after being reflected on the object. It is a method of performing 3D scanning using the time difference between the height of the object that is returned by irradiating the signal. In an embodiment of the present invention, a 3D camera to which such a TOF is applied (hereinafter, a TOF 3D camera) is used to determine where the measurement object (eg, a person entering) is located.

1, in the embodiment of the present invention, two TOF 3D cameras are used, and the measurement section for access control is divided into two sections, that is, a first section and a second section, and one TOF 3D camera (α) measures the first section and the other TOF 3D camera β measures the second section. It is assumed that the person entering the first section first moves to the second section. In this case, the TOF 3D camera α in the first section transmits a signal in the first direction opposite to the direction in which the person enters and receives the signal reflected by the person. The TOF 3D camera β in the second section transmits a signal in the second direction, which is the direction in which the person enters, and receives the signal reflected by the person. The first direction and the second direction are opposite to each other.

The signals measured by the TOF 3D camera α in the first section and the TOF 3D camera β in the second section are provided to the access control system, and the access control system acquires biometric information based on the measured signals and performs authentication. And access control according to the result. In particular, the access control system uses a signal measured when passing through a preset point in the first section and a preset point in the second section. The preset points in the first section are two points A and B, and the preset points in the second section are two points C and D, but are not limited thereto. In an embodiment of the present invention, it is determined whether or not a person entering a person passes through a preset point based on a distance measurement by a TOF 3D camera. That is, it is possible to determine whether a person entering a person passes through a preset point through distance measurement based on the time for transmitting and receiving the signal of the TOF 3D camera.

In an embodiment of the present invention, a measurement section for access control is divided into two first and second sections, and authentication using biometric information is performed based on a signal measured for each section.

Points A and B are preset for the first section, and points C and D are preset for the second section. Whether each point passes may be determined by measuring the distance of the TOF 3D camera in the corresponding section.

First, authentication may be performed for a person entering through the first section (ie, a person entering and entering the first section).

In this case, if it is detected that the person entering the first section first passes through point A, it is regarded as attempting authentication as the first section, and biometric information is based on the image captured by the TOF 3D camera (α) in the first section. Acquire and use it to perform authentication.

On the other hand, when it is detected as passing through point D after passing through point C of the second section, it is regarded as exiting the second section rather than entering for biometric authentication. In this case, biometric information acquisition and authentication using the TOF 3D camera β in the second section is not performed. Accordingly, biometric authentication is not performed when it is detected through the exiting second section rather than the entry, so it is possible to prevent the phenomenon of incorrect authentication by using information photographed of the back view of the exiting person (e.g., back head). I can. In addition, since the TOF 3D camera gazes at the person in the front direction and measures the distance, undetected phenomenon caused by the gap between sensors installed on the side of the gate is prevented.

On the other hand, it is possible to perform authentication for a person entering through the second section (that is, a person who intends to enter the second section and exit).

In this case, if it is detected that the person entering the second section first passes through point D, it is considered to attempt authentication as the second section, and biometric information is recorded based on the image captured by the TOF 3D camera (β) of the second section. Acquire and use it to perform authentication.

On the other hand, when it is detected as passing through point A after passing through point B of the first section, it is regarded as exiting the first section rather than entering for biometric authentication. In this case, biometric information acquisition and authentication using the TOF 3D camera α in the first section is not performed. Accordingly, when it is detected through the first section that enters the second section and exits, biometric authentication is not performed, so the phenomenon that incorrect authentication is performed using information photographing the back view of the exiting person (e.g., back head) Can be prevented, and undetected phenomenon is prevented.

2 is a diagram showing the structure of an access control system according to an embodiment of the present invention.

As shown in FIG. 2, the access control system 1 according to the embodiment of the present invention controls access through a gate in connection with a 3D camera 2 and a gate controller 3 that controls the opening/closing of the gate. Perform.

To this end, the access control system 1 includes an authentication processing unit 10, a biometrics database 20, a control processing unit 30, and an output unit 40.

The 3D camera 2 transmits a signal based on TOF, measures a distance based on a signal reflected and received by an object, and provides the corresponding signal to the control processing unit 30, and also photographs the person entering and Is provided to the authentication processing unit 10. The 3D camera 2 includes a first camera installed and operated in a first section and a second camera installed and operated in a second section. Here, the first and second cameras may be 3D cameras having a TOF function. Here, as an example, the use of two cameras for photographing the first section and the second section is used as an example, but the present invention is not limited thereto, and implemented to shoot both the first section and the second section using a single camera. It could be.

Since the signal according to the distance measurement by the 3D camera (2) is location information indicating where the person is actually located based on the distance, it is used as a signal to determine whether or not the person passes through the set authentication point. It is called a point distance signal. Since the image captured by the 3D camera 2 is used as information for biometric authentication, it may also be referred to as an image for biometric authentication.

The biometrics database 20 stores biometric information on users who are permitted to enter, and the biometric information includes various types of information that can be obtained from images such as face shape, iris, and fingerprint. The biometric information may be voice, and in this case, an audio signal may be included in an image for biometric authentication. The biometrics database 20 may correspond and store the corresponding biometric information for each user who is permitted to enter, and in addition, user-related information (eg, name, employee information, etc.), and access information (information indicating when the user entered the site) are additionally responded. And can be saved.

The authentication processing unit 10 performs authentication based on information stored in the biometrics database 20. Specifically, the authentication processing unit 10 acquires biometric information from an image for biometric authentication provided from the 3D camera 2, and performs authentication based on whether the obtained biometric information is stored in the biometric database 20 do. The authentication processing unit 10 may perform authentication according to an authentication request from the control processing unit 30, and as a result of authentication, that is, approval indicating that the person is registered in the biometrics database 20 and is permitted to enter. The authentication result including the included authentication result and the authentication result including a rejection indicating that the corresponding accessor is a user who is not permitted to enter is provided to the control processing unit 30.

The control processing unit 30 controls the authentication operation of the authentication processing unit 10, and transmits a user permission confirmation signal to the gate controller 3 according to the authentication result of the authentication processing unit 10. The accessor authority confirmation signal includes access permission when the user is authenticated as a user who is allowed access as a result of authentication, and includes no access when the user is authenticated as a user who is not permitted access as a result of the authentication. The gate controller 3 opens or closes the gate according to the accessor authority confirmation signal.

In particular, the control processing unit 30 determines whether a person passes through a point among the first section and the second section according to the distance signal from the 3D camera 2 to the user authentication point, and determines whether or not the person passes through the set point. Accordingly, authentication is requested to the authentication processing unit 10. At this time, the control processing unit 30 specifically, when it is determined that the person entering the first section passes through the first set point (for example, point A), is provided through the first 3D camera in the first section. A request is made to the authentication processing unit 10 to perform authentication based on the image. On the other hand, if it is determined that the accessor has passed the third set point (eg, C) of the second section and then passed the second set point (eg, D), a separate authentication request is not performed. In this case, the control processing unit 30 may command the authentication processing unit 10 not to perform authentication based on the image provided through the second 3D camera in the second section.

On the other hand, when it is determined that the person entering and passing through the fourth set point (eg, point D) of the second section for the first time, the control processing unit 30 displays the image provided through the second 3D camera of the second section. A request is made to the authentication processing unit 10 to perform authentication based on it. On the other hand, when it is determined that the accessor has passed the second set point (eg, B) of the first section and then passed the first set point (eg, A), a separate authentication request is not performed. In this case, the control processing unit 30 may command the authentication processing unit 10 not to perform authentication based on the image provided through the first 3D camera in the first section.

Also, the control processing unit 30 may perform log information upload, biometric feature point upload, and the like to manage information stored in the biometric database 20.

Meanwhile, the output unit 40 outputs the authentication result of the authentication processing unit 10. For example, the output unit 40 may be configured in the form of a user viewer to output an authentication result, so that a visitor can instantly view his/her access image and biometric authentication result.

Next, a method of performing access control using biometric information using an access control system having such a structure will be described.

3 is a flowchart of an access control method of an access control system according to an embodiment of the present invention.

As shown in FIG. 3, for access control through linkage between the access control system 1 and the 3D camera 2, the control processing unit 30 is used for 1:N 3D camera authentication from the biometrics database 20. The domain data is extracted, the template is extracted from the stored folder, and transmitted to the authentication processing unit 10 (S100, S110).

Through this process, in a state in which preparation for connection with the 3D camera 2 is completed, the 3D camera photographs a person entering the measurement section for access control, and an image for biometric authentication of the captured person (for example, a living body RTSP ( Real Time Streaming Protocol) video) is provided to the authentication processing unit 10 (S120).

The authentication processing unit 10 provides the received biometric authentication image to the output unit 40, and the output unit 40 may output the captured image so that the visitor can see it (S130).

The 3D camera 2 detects whether or not a person to be recognized, that is, a person entering or exiting, is approaching at a set point designated in the first section and the second section, which are the measurement sections, and, if detected, controls the control processing unit 30 ) To transmit (S140).

Accordingly, biometric authentication is triggered, and the control processing unit 30 requests biometric authentication to the authentication processing unit 10 (S150).

The authentication processing unit 10 performs authentication by comparing the biometric information stored in the biometrics database 20 with an image for biometric authentication according to the biometric authentication request, and transmits the authentication result to the control processing unit 30 (S160).

The control processing unit 30 transmits the accessor permission signal according to the authentication result to the gate controller 3 (S170), and then the gate controller 3 transmits an open/close signal to the gate 4 according to the accessor permission signal. Make the gate 4 open or closed.

In the above embodiment, the gate controller 3 immediately opened or closed the gate 4 according to authentication using biometric information by the access control system 1, but in addition to authentication by the access control system 1, the gate It is also possible to open or close the gate 4 by additionally performing access authority confirmation through linkage with the controller 30.

In this case, in the above step (S160), the authentication processing unit 10 may transmit the authentication result together with the card ID to the control processing unit 30, where the card ID is for biometric authentication photographed by the 3D camera 2 It may be a card ID of a user stored in correspondence with the biometric information stored in the biometrics database 20 that matches the image.

The control processing unit 30 transmits the card ID transmitted from the authentication processing unit 10 to the gate controller 3, and the gate controller 3 checks the access authority of the corresponding card ID and transmits the result to the control processing unit 30. send. The control processing unit 30 receives and confirms the result according to the access authority confirmation, and transmits an access authority confirmation signal including the authentication result to the gate controller 3. In this case, optionally, if the card ID has access authority, an access authority confirmation signal including an authentication result may be transmitted, and if the card ID does not have access authority, the access authority confirmation signal may not be transmitted.

The gate controller 3 opens or closes the gate 4 according to the authentication result, and opens the gate 4, for example, when the authentication result includes authentication success and the corresponding card ID has access authority.

4 is a detailed flowchart illustrating a biometric authentication process in an access control method according to an embodiment of the present invention.

As described above, the 3D camera 2 detects whether or not a person to be recognized, that is, a person entering or exiting, is approaching at a set point designated in the first and second sections, which are the measurement sections, and when detected, a detection signal (attendance authentication point distance signal). Is transmitted to the control processing unit 30.

The control processing unit 30 triggers authentication according to the received accessor authentication point distance signal and requests authentication to the authentication processing unit 10. Specifically, as shown in FIG. 4, when the received accessor authentication point distance signal indicates that the accessor first passes through point A of the first section (S300 to S310), the control processing unit 30 It is regarded as attempting authentication while entering, and requests authentication to the authentication processing unit 10. Accordingly, the authentication processing unit 10 acquires biometric information based on the biometric authentication image captured by the 3D camera in the first section and performs authentication using the biometric information (S320).

On the other hand, if the received accessor authentication point distance signal indicates that the accessor passes through point A after passing through point B of the first section (S330), it is regarded as leaving the first section rather than entering for biometric authentication. . In this case, an authentication request is not made to the authentication processing unit 10 (S340).

In addition, when the received accessor authentication point distance signal indicates that the accessor passes through point D after passing through point C of the second section (S350), it is regarded as exiting the second section rather than entering for biometric authentication. . Even in this case, the authentication request is not made to the authentication processing unit 10 (S360).

In addition, if the received accessor authentication point distance signal indicates that the accessor first passes through the point D of the second section (S370), it is regarded as attempting authentication by entering the second section, and authentication is performed with the authentication processing unit 10. request. Accordingly, the authentication processing unit 10 acquires biometric information based on the biometric authentication image captured by the 3D camera in the second section and performs authentication using the biometric information (S390).

According to this authentication process, biometric authentication is not performed when a visitor is detected through an exit section rather than an entry, so it is possible to prevent a phenomenon in which incorrect authentication is performed by using information photographed of the back of the exiting person. .

5 is a structural diagram of an access control system according to another embodiment of the present invention.

5, the access control system 100 according to another embodiment of the present invention includes a processor 110, a memory 120, an input interface device 130, an output interface device 140, and a network interface. 150 and storage device 160, which can communicate via bus 170.

The processor 110 may be configured to implement the methods described based on FIGS. 1 to 4 above. The processor 110 may be configured to perform functions of, for example, an authentication processing unit and a control processing unit. The processor 110 may be a central processing unit (CPU) or a semiconductor device that executes instructions stored in the memory 120 or the storage device 160.

The memory 120 is connected to the processor 110 and stores various information related to the operation of the processor 110. The memory 120 may store an instruction for execution by the processor 110 or may temporarily store an instruction by loading it from the storage device 160. The processor 110 may execute an instruction stored or loaded in the memory 120. The memory may include a ROM 121 and a RAM 122.

In an embodiment of the present invention, the memory 120/storage device 160 may be located inside or outside the processor 110, and may be connected to the processor 110 through various known means. The memory 120/storage device 160 may be configured to include a biometric database.

The network interface device 150 is connected to a network and is configured to transmit and receive signals. The network interface device 150 may be configured to transmit and receive signals to and from a 3D camera or a gate controller through a network. The network interface device 150 is configured to receive an image for biometric authentication and a distance signal for an entry/exit authentication point transmitted from a 3D camera (a 3D camera in a first section and a 3D camera in a second section) and transmit it to the processor 110, In addition, it may be configured to transmit the accessor authority confirmation signal from the processor 110 to the gate controller.

The input interface device 130 may be configured to receive a signal input from an operator (or an operator's terminal) and transmit it to the processor 110.

The output interface device 140 is configured to output a processing result by the processor 110, and may be configured to output an authentication result and an image for biometric authentication, for example.

The embodiment of the present invention is not implemented only through the apparatus and/or method described above, and is implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention, a recording medium in which the program is recorded, and the like. Alternatively, such an implementation can be easily implemented by those skilled in the art to which the present invention pertains from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (15)

As a method in which the system controlling access through the gate performs access control,
Receiving, by the system, from a camera installed in a measurement section for access control, an accessor authentication point distance signal indicating a location of a person in the measurement section;
Performing, by the system, biometric authentication using an image obtained through the camera when it is determined that the accessor has passed a preset point in the measurement section according to the accessor authentication distance signal; And
Controlling, by the system, opening or closing of the gate according to the biometric authentication result
Access control method comprising a. The method of claim 1,
The measurement section includes a first section and a second section, the first section includes a first set point and a second set point, and the second section includes a third set point and a fourth set point, , The first set point, the second set point, the third set point, and the fourth set point are sequentially arranged in an order close to a direction in which a person enters the measurement section. According to claim 2,
The step of performing the biometric authentication
When it is determined that the accessor has first passed the first set point of the first section or the fourth set point of the second section according to the accessor authentication distance signal, obtained through the camera An access control method for performing biometric authentication using an image. The method of claim 3,
The camera includes a first camera for photographing the first section and a second camera for photographing the second section,
The step of performing the biometric authentication
Performing biometric authentication using an image acquired through the first camera when it is determined that the accessor first passes the first set point of the first section according to the accessor authentication distance signal; And
When it is determined that the accessor first passes the fourth set point in the second section according to the accessor authentication distance signal, performing biometric authentication by using an image obtained through the second camera
Containing, access control method. According to claim 2,
The step of performing the biometric authentication
According to the accessor authentication distance signal, the accessor passes through the first set point after passing the second set point in the first section, or after passing the third set point in the second section, the When it is determined that the fourth set point has passed, not performing biometric authentication. The method of claim 1,
The camera is a TOF (Time of Flight) 3D camera, and the accessor authentication point distance signal indicates a location of a visitor in the measurement section based on a distance measured by the TOF 3D camera. The method of claim 1,
The step of performing the biometric authentication
Determining whether the biometric information obtained from the image acquired through the camera matches the biometric information stored in the biometrics database-the biometrics database includes biometric information for each user and card ID information corresponding thereto; And
Allowing access authentication when the biometric information obtained from the image matches the biometric information stored in the biometrics database
Containing, access control method. The method of claim 7,
The step of performing the biometric authentication
Requesting access authority by transmitting card ID information corresponding to the matched biometric information to a gate controller controlling the gate;
Receiving a result according to the access permission request; And
Transmitting the result of the biometric authentication to the gate controller together with an access permission confirmation signal indicating that the result according to the access permission request has been confirmed
Further comprising a, access control method. As an access control system that controls access through the gate,
A network interface device that communicates with a camera installed in a measurement section for access control;
A processor configured to perform authentication using biometric information based on an image from the camera received through the communication unit; And
Biometrics database including user-specific biometric information
It includes,
The processor,
When it is determined that the accessor has passed a preset point in the measurement section according to the accessor authentication point distance signal indicating the location of the person in the measurement section, biometric authentication is performed using the image acquired through the camera. And transmitting a signal for controlling opening or closing of the gate through the network interface device according to the biometric authentication result. The method of claim 9,
The measurement section includes a first section and a second section, the first section includes a first set point and a second set point, and the second section includes a third set point and a fourth set point, , The first set point, the second set point, the third set point, and the fourth set point are sequentially arranged in an order close to a direction in which a person enters the measurement section. The method of claim 10,
The processor,
Is configured to trigger authentication when it is determined that the accessor has first passed the first set point in the first section or first passed the fourth set point in the second section according to the access person authentication distance signal Control processing unit; And
An authentication processing unit configured to perform biometric authentication using an image acquired through the camera according to authentication triggering of the control processing unit
Is configured to include, access control system. The method of claim 11,
The camera includes a first camera for photographing the first section and a second camera for photographing the second section,
When it is determined that the accessor first passes the first set point of the first section according to the accessor authentication distance signal, the control processing unit requests authentication to the authentication processing unit, and processes the authentication according to the authentication request. The addition is configured to perform biometric authentication using an image acquired through the first camera,
When it is determined that the accessor first passes the fourth set point of the second section according to the accessor authentication distance signal, the control processing unit requests authentication to the authentication processing unit, and processes the authentication according to the authentication request. The access control system, wherein the access control system is configured to perform biometric authentication by using the image acquired through the second camera. The method of claim 10,
The processor, according to the accessor authentication distance signal, passes through the first set point after the accessor passes the second set point in the first section, or passes through the third set point in the second section Then, when it is determined that the fourth set point has passed, the access control system is configured to not perform biometric authentication. The method of claim 9,
The camera is a TOF 3D camera, and the access control point distance signal indicates a location of a person in the measurement section based on a distance measured by the TOF 3D camera. The method of claim 9,
The biometrics database includes user-specific biometric information and card ID information corresponding thereto,
The processor is configured to perform authentication based on whether the biometric information obtained from the image acquired through the camera matches the biometric information stored in the biometrics database.

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